aperiodic tracking reference signal

专利摘要:
Methods, systems and devices for wireless communications are described. A base station can determine that a trigger event associated with user equipment (UE) has occurred. The UE may receive, based, at least in part, on a trigger event occurrence associated with the UE, a trigger signal that identifies resources to be used to transmit an aperiodic tracking reference signal (TRS). The UE can receive the aperiodic TRS based, at least in part, on the trigger signal and the identified resources. The UE may perform at least one of a tracking function, or a synchronization function, or an alignment function, or a combination of them, in response to the occurrence of the triggering event and based, at least in part, on the TRS aperiodic.
公开号:BR112020013874A2
申请号:R112020013874-6
申请日:2018-12-20
公开日:2020-12-01
发明作者:Heechoon Lee；Peter Pui Lok Ang；Jing Sun；Tao Luo；Peter Gaal；Wanshi Chen
申请人:Qualcomm Incorporated；
IPC主号:

专利说明:

[001] [001] The present patent application claims the benefits of Lee et al US patent application No. 16 / 225,941, entitled "Aperiodic Tracking Reference Signal," filed on December 19, 2018 and provisional US patent application No. 62 / 615,023, by Lee et al., Entitled "Aperiodic Tracking Reference Signal", filed on January 9, 2018, each of which is assigned to the assignee of this application, and expressly incorporated here. FUNDAMENTALS
[002] [002] The following is generally related to wireless communication, and more specifically to the aperiodic tracking reference signal (TRS).
[003] [003] Wireless communications systems are widely developed to provide various types of communication content, such as voice, video, packet data, sending messages, broadcasting and so on. These systems may be able to support communication with multiple users by sharing available system resources (for example, time, frequency and power). Examples of such multiple access systems include fourth generation (4G) systems, such as Long Term Evolution (LTE) systems, LTE-Advanced systems (LTE-A), or LTE-A Pro systems, and fifth systems generation (5G), which can be referred to as Novo Rádio (NR) systems. Such systems may employ technologies such as code division multiple access (CDMA), time division multiple access (TDMA), frequency division multiple access (FDMA), orthogonal frequency division multiple access (OFDMA), or Discrete OFDM by discrete Fourier transformation (DFT-S-OFDM). A wireless multiple access communications system can include multiple base stations or network access nodes, each simultaneously supporting communication to multiple communication devices, which may otherwise be known as user equipment (UE ).
[004] [004] Wireless communication systems can use reference signals for a variety of purposes, for example, channel estimation, beam tracking, synchronization and the like. Some wireless communication systems may use an always-on reference signal configuration, for example, a channel status information reference signal (CSI-RS), where the reference signal is transmitted on the resource elements (REs) predefined during each partition, subframe, etc. The transmission of them always in reference signals can occur regardless of whether there are any wireless communications in progress. While it may be acceptable in some situations, that this approach comes with high costs in terms of time and frequency resources, channel occupation time, reduced system throughput, waste and the like.
[005] [005] To resolve such high costs, some wireless communication systems may use a periodic reference signal configuration. This approach may include the use of reference signals that, although not always connected, are transmitted multiple times, according to a periodic schedule,
[006] [006] The techniques described refer to improved methods, systems, devices or devices that support the aperiodic tracking reference signal (TRS), such as a channel status information reference signal (CSI-RS) for the purposes of tracking. Generally, the techniques described provide the transmission of an aperiodic TRS in response to the occurrence of a trigger event on the user equipment (UE). In some respects, the resources that can be used for aperiodic TRS can be indicated in a trigger signal that is transmitted to the UE, for example, in a downlink control indicator (DCI), in a control element (CE ) media access control (MAC), and the like. In other respects, the base station can preconfigure the UE with an indication of the aperiodic TRS resources and then the trigger event can serve as the trigger for the aperiodic TRS. In some respects, the triggering event can be considered a cold start case since the event occurs aperiodically, dynamically, etc.
[007] [007] Thus, in some aspects, the base station and the UE can determine that the triggering event has occurred. Illustrative trigger events may include, but are not limited to, a secondary cell (SCell) being activated / deactivated, a change in the bandwidth portion (BWP), a beam change (for example, a change in the shared channel beam in physical downlink (PDSCH), a radio location occasion, and the like In response to the triggering event, the base station can transmit a trigger signal to the UE that identifies some or all of the resources to be used for the transmission For example, the trigger signal can indicate the real time and / or frequency resources that will be used for the transmission of the aperture TRS and / or trigger signal, it can provide an indication of the trigger event (for example, activation / deactivation indication SCell) and the resources for aperiodic TRS can be based on this indication.The base station can then transmit (and the UE can receive) the aperiodic TRS using the rec bears identified or otherwise indicated on the trigger signal. The UE and the base station can use the aperiodic TRS for time and / or frequency tracking, Doppler spread / delay determination and the like.
[008] [008] In other respects, the features associated with the aperiodic TRS can be pre-configured. For example, the base station can transmit a configuration signal (such as a radio resource control signal (RRC)) to the UE, which identifies the time and / or frequency resources that will be used to transmit the aperiodic TRS whenever a trigger event occurs. As a non-limiting example, the configuration signal can provide a transmission timing parameter indicating when the aperiodic TRS will be transmitted in relation to the occurrence of the triggering event. Accordingly, the UE and the base station can detect or otherwise determine that a triggering event has occurred and the base station can transmit the aperiodic TRS in response to the triggering event and based on the configuration signal.
[009] [009] A wireless communication method is described. The method may include determining that a trigger event associated with a UE has occurred, transmitting, based, at least in part on the determination, a trigger signal that identifies the resources to be used for the transmission of an aperiodic TRS and transmitting the aperiodic TRS, based, at least in part, on the trigger signal and the resources identified.
[010] [010] A device for wireless communication is described. The apparatus may include means for determining that a trigger event, associated with a UE, has occurred, means for transmitting, based at least in part on the determination, a trigger signal that identifies the resources to be used for transmitting an aperiodic TRS , and means for transmitting the aperiodic TRS, based at least in part on the trigger signal and identified resources.
[011] [011] Another device for wireless communication is described. The device can include a processor, memory in electronic communication with the processor, and instructions stored in memory. The instructions can be operated to make the processor determine that a trigger event, associated with a UE, has occurred, transmit, based, at least in part on the determination, a trigger signal that identifies the resources to be used for the transmission of an aperiodic TRS, and transmit the aperiodic TRS based, at least in part, on the trigger signal and identified resources.
[012] [012] A non-transitory, computer-readable medium for wireless communication is described. The non-transitory computer-readable medium may include instructions that operate to have a processor determine that a trigger event, associated with a UE, has occurred, transmit, based at least in part on the determination, a trigger signal that identifies the resources to be used for transmission of an aperiodic TRS, and transmit the aperiodic TRS, based at least in part on the trigger signal and identified resources.
[013] [013] In some examples of the non-transitory computer-readable method, apparatus and medium described above, the trigger signal can be transmitted in a DCI.
[014] [014] In some examples of the non-transitory computer-readable method, apparatus and medium described above, the trigger signal indicates at least one of a field indicating that the aperiodic TRS can be triggered or a field indicating the trigger event, where the indication of the triggering event comprises the indication that the aperiodic TRS can be triggered.
[015] [015] Some examples of the non-transitory computer-readable method, apparatus and medium described above may additionally include processes, characteristics, means or instructions for carrying out a synchronization signal block (SSB) transmission before the triggering event occurs, the SSB transmission indicating at least part of the information associated with the triggering event.
[016] [016] In some examples of the non-transitory computer-readable method, apparatus and medium described above, the trigger event comprises at least one of a secondary cell activation event, or a bandwidth portion switching event, or a beam change event, or a connected reception batch event, or an inactive batch reception event, or a combination thereof.
[017] [017] Some examples of the non-transitory computer-readable method, apparatus and medium described above may additionally include processes, characteristics, means or instructions for transmitting a DCI in uplink that identifies the resources to be used for the transmission of the aperiodic TRS.
[018] [018] Some examples of the non-transitory computer-readable method, apparatus and medium described above may additionally include processes, characteristics, means or instructions for configuring the uplink DCI to identify additional resources to be used for transmitting a reference signal from channel status information.
[019] [019] Some examples of the non-transitory computer-readable method, apparatus and medium described above may additionally include processes, characteristics, means or instructions for transmitting a DCI in downlink that identifies the resources to be used for transmission of the aperiodic TRS.
[020] [020] Some examples of the non-transitory computer-readable method, apparatus and medium described above may additionally include processes, characteristics, means or instructions for setting the bits of a downlink concession field, from the downlink DCI, to indicate a zero concession or invalid grant. Some examples of the non-transitory computer-readable method, apparatus and medium described above may include additional processes, characteristics, means or instructions for setting bits in a second field to indicate that the aperiodic TRS may have been triggered, the second field being different from the field downlink concession.
[021] [021] In some examples of the non-transitory computer-readable method, apparatus and medium described above, the configured bits in the second field indicate that the triggering event has occurred, and the indication of the triggering event further indicates that the aperiodic TRS can be triggered .
[022] [022] Some examples of the non-transitory computer-readable method, apparatus and medium described above may additionally include processes, characteristics, means or instructions for transmitting the DCI in the same partition in which the aperiodic TRS can be transmitted.
[023] [023] Some examples of the computer-readable method, apparatus and medium described above may additionally include processes, characteristics, means or instructions for transmitting the DCI on a partition other than the partition on which the aperiodic TRS can be transmitted.
[024] [024] In some examples of the non-transitory computer-readable method, apparatus and medium described above, the DCI comprises at least one of a DCI fallback format or a non-fallback DCI format.
[025] [025] In some examples of the non-transitory computer-readable method, apparatus and medium described above, the DCI comprises an indication of a transmission timing parameter associated with the aperiodic TRS.
[026] [026] In some examples of the non-transitory computer-readable method, apparatus and medium described above, the trigger signal can be transmitted in a control element (CE), of the medium access control (MAC).
[027] [027] Some examples of the non-transitory computer-readable method, apparatus and medium described above may additionally include processes, characteristics, means or instructions for configuring the CE MAC to indicate that a secondary cell may have been activated.
[028] [028] In some examples of the non-transitory computer-readable method, apparatus and medium described above, the aperiodic TRS can be transmitted within a defined waiting period after CE MAC.
[029] [029] Some examples of the non-transitory computer-readable method, apparatus and medium described above may additionally include processes, characteristics, means or instructions for configuring the CE MAC, to indicate that a beam shift event may have occurred.
[030] [030] In some examples of the non-transitory computer-readable method, apparatus and medium described above, the triggering event comprises at least one of a secondary cell activation event, or a bandwidth portion switching event, or a beam change event, or a connected reception batch event, or an inactive batch reception event, or a combination thereof.
[031] [031] In some examples of the non-transitory computer-readable method, apparatus and medium described above, the aperiodic TRS comprises a channel status information reference signal (CSI-RS) for tracking.
[032] [032] A wireless communication method is described. The method may include determining that a trigger event, associated with the UE, has occurred, receiving, based at least in part on the determination, a trigger signal that identifies the resources to be used for the transmission of an aperiodic TRS and reception of TRS aperiodic based, at least in part, on the trigger signal and the identified resources.
[033] [033] A device for wireless communication is described. The apparatus may include means for determining that a trigger event, associated with the UE, has occurred, means for receiving, based at least in part on the determination, a trigger signal that identifies resources to be used for transmitting an aperiodic TRS, and means for receiving the aperiodic TRS based, at least in part, on the trigger signal and identified resources.
[034] [034] Another device for wireless communication is described. The device may include a processor in electronic communication with the processor, and instructions stored in memory. The instructions can be operated to make the processor determine that a trigger event, associated with the UE, has occurred, to receive, based, at least in part on the determination, a trigger signal that identifies the resources to be used for transmitting data. an aperiodic TRS and receive the aperiodic TRS, based at least in part on the trigger signal and identified resources.
[035] [035] A non-transitory, computer-readable medium for wireless communication is described. The non-transitory computer-readable medium may include operable instructions to have a processor determine that a trigger event, associated with the UE, has occurred, to receive, based at least in part on the determination, a trigger signal that identifies the resources to be used for the transmission of an aperiodic TRS, and receive the aperiodic TRS, based at least in part on the trigger signal and identified resources.
[036] [036] In some examples of the non-transitory computer-readable method, apparatus and medium described above, the trigger signal can be received in a DCI.
[037] [037] In some examples of the non-transitory computer-readable method, apparatus and medium described above, the trigger signal indicates at least one of a field indicating that the aperiodic TRS can be triggered or a field indicating the trigger event, where the triggering event indication comprises the indication that the aperiodic TRS can be triggered.
[038] [038] In some examples of the non-transitory computer-readable method, apparatus and medium described above, the triggering event comprises at least one of a secondary cell activation event, or a bandwidth portion switching event, or a beam change event, or a connected reception batch event, or an inactive batch reception event or a combination thereof.
[039] [039] Some examples of the non-transitory computer-readable apparatus and medium method described above may additionally include processes, characteristics, means or instructions for receiving an SSB transmission before the triggering event occurs, the SSB transmission indicating at least a part information associated with the triggering event.
[040] [040] Some examples of the non-transitory computer-readable method, apparatus and medium described above may include additional processes, characteristics, means or instructions for receiving an uplink DCI that identifies the resources to be used for transmitting the aperiodic TRS.
[041] [041] Some examples of the non-transitory, computer-readable method, apparatus and medium described above may additionally include processes, means or instructions for decoding the uplink DCI to identify additional resources to be used for transmitting a reference signal from channel status information.
[042] [042] Some examples of the non-transitory computer-readable method, apparatus and medium described above may include additional processes, characteristics, means or instructions for receiving a downlink DCI that identifies the resources to be used for the transmission of the aperiodic TRS.
[043] [043] Some examples of the non-transitory computer-readable method, apparatus and medium described above may additionally include processes, characteristics,
[044] [044] In some examples of the non-transitory computer-readable method, apparatus and medium described above, the configured bits of the second field indicate that the triggering event may have occurred, and the indication of the triggering event further indicates that the aperiodic TRS may be triggered.
[045] [045] Some examples of the non-transitory computer-readable method, apparatus and medium described above may additionally include processes, characteristics, means or instructions for receiving the DCI in the same partition in which the aperiodic TRS can be received.
[046] [046] Some examples of the non-transitory computer-readable method, apparatus and medium described above may additionally include processes, characteristics, means or instructions for receiving the DCI on a partition other than the partition on which the aperiodic TRS can be received.
[047] [047] In some examples of the non-transitory computer-readable method, apparatus and medium described above, the DCI comprises at least one of a DCI fallback format or a non-fallback DCI format.
[048] [048] In some examples of the non-transitory computer-readable method, apparatus and medium described above, the DCI comprises an indication of a transmission timing parameter associated with the aperiodic TRS.
[049] [049] In some examples of the non-transitory computer-readable method, apparatus and medium described above, the trigger signal can be received on a MAC MAC.
[050] [050] Some examples of the non-transitory computer-readable method, apparatus and medium described above may additionally include processes, characteristics, means or instructions for determining that a secondary cell may have been activated based, at least in part, on the EC MAC.
[051] [051] In some examples of the non-transitory computer-readable method, apparatus and medium described above, the aperiodic TRS can be received within a defined waiting period after CE MAC.
[052] [052] Some examples of the non-transitory computer-readable method, apparatus and medium described above may additionally include processes, characteristics, means or instructions for determining that a beam shift event may have occurred based, at least in part, in the MAC MAC.
[053] [053] In some examples of the non-transitory computer-readable method, apparatus and medium described above, the trigger event comprises at least one of a secondary cell activation event, or a bandwidth part trigger event, or a beam change event, or a connected reception batch event, or an inactive batch reception event or a combination thereof.
[054] [054] In some examples of the non-transitory computer-readable method, apparatus and medium described above, the aperiodic TRS comprises a CSI-RS for tracking.
[055] [055] A wireless communication method is described. The method may include transmitting a configuration signal to a UE, the configuration signal identifying a transmission timing parameter to transmit an aperiodic TRS, determining that a trigger event associated with the UE has occurred, and transmitting the aperiodic TRS to the UE based, at least in part, on the determination and according to the transmission timing parameter.
[056] [056] A device for wireless communication is described. The apparatus may include means for transmitting a configuration signal to a UE, the configuration signal identifying a transmission timing parameter for transmitting an aperiodic TRS, means for determining that a trigger event, associated with the UE, has occurred, and means for transmit the aperiodic TRS to the UE, based, at least in part, on the determination and according to the transmission timing parameter.
[057] [057] Another device for wireless communication is described. The device can include a processor, memory in electronic communication with the processor, and instructions stored in memory. The instructions can operate to make the processor transmit a configuration signal to a UE, the configuration signal identifying a transmission timing parameter to transmit an aperiodic TRS, determine that a trigger event associated with the UE has occurred, and transmit the Aperiodic TRS for the UE based, at least in part, on the determination and according to the transmission timing parameter.
[058] [058] A non-transitory, computer-readable medium for wireless communication is described. The non-transitory computer-readable medium may include instructions that operate to cause a processor to transmit a configuration signal to a UE, the configuration signal identifying a transmission timing parameter to transmit an aperiodic TRS, determine that a trigger event , associated with the UE, occurred, and transmit the aperiodic TRS to the UE, based at least in part on the determination and according to the transmission timing parameter.
[059] [059] Some examples of the non-transitory computer-readable method, apparatus and medium described above may additionally include processes, characteristics, means or instructions for identifying a radio location occasion for the UE, while the UE may be operating in a receiving state discontinuous inactive mode, where the radio location occasion comprises the triggering event.
[060] [060] Some examples of the non-transitory computer-readable method, apparatus and medium described above may additionally include processes, characteristics, means or instructions for determining that data can be communicated to the UE, while the UE may be operating on a discontinuous reception state in connected mode. Some examples of the non-transitory computer-readable method, apparatus and medium described above may additionally include processes, characteristics, means or instructions for identifying a linked period, in which the UE wakes up from the state of discontinuous reception. Some examples of the non-transitory computer-readable method, apparatus and medium described above may additionally include processes, characteristics, means or instructions for transmitting the aperiodic TRS before or during the connected period, according to the transmission timing parameter.
[061] [061] In some examples of the non-transitory computer-readable method, apparatus and medium described above, a transmission timing parameter comprises a relative timing parameter for transmitting the aperiodic TRS after the triggering event has occurred.
[062] [062] In some examples of the non-transitory computer-readable method, apparatus and medium described above, the triggering event comprises at least one of a secondary cell activation event, or a bandwidth portion switching event, or a beam change event, or a connected reception batch event, or an inactive batch reception event or a combination thereof.
[063] [063] A wireless communication method is described. The method may include receiving a configuration signal that identifies a transmission timing parameter for transmission of an aperiodic TRS, determining that a trigger event associated with the UE has occurred, and receiving the aperiodic TRS based, at least in part, on the determination , and according to the transmission timing parameter.
[064] [064] A device for wireless communication is described. The apparatus may include means for receiving a configuration signal that identifies a transmission timing parameter for the transmission of an aperiodic TRS, means for determining that a trigger event, associated with a UE has occurred, and means for receiving the aperiodic TRS, based, at least in part, on the determination and according to the transmission timing parameter.
[065] [065] Another device for wireless communication is described. The device can include a processor, memory in electronic communication with the processor, and instructions stored in memory. The instructions can operate to make the processor receive a configuration signal that identifies a transmission timing parameter to transmit an aperiodic TRS, determine that a trigger event, associated with the UE, has occurred, and receive the aperiodic TRS based on, at least in part, in the determination, and according to the transmission timing parameter.
[066] [066] A non-transitory, computer-readable medium for wireless communication is described. The non-transitory computer-readable medium may include instructions that operate to cause a processor to receive a configuration signal that identifies a transmission timing parameter to transmit an aperiodic TRS, determine that a trigger event, associated with the UE, has occurred, and receive the aperiodic TRS, based, at least in part, on the determination and according to the transmission timing parameter.
[067] [067] Some examples of the non-transitory computer-readable method, apparatus and medium described above may additionally include processes, characteristics, means or instructions for receiving the aperiodic TRS during a radio localization occasion for the UE while the UE may be operating in a state of discontinuous reception inactive, where the occurrence of the radio localization occasion comprises the triggering event.
[068] [068] Some examples of the non-transitory computer-readable method, apparatus and medium described above may additionally include processes, characteristics, means or instructions for receiving the aperiodic TRS before a connected duration of a connected mode discontinuous reception state. Some examples of the non-transitory computer-readable method, apparatus and medium described above may additionally include processes, characteristics, means or instructions to determine, based, at least in part, on the reception of the aperiodic TRS, that the data may be communicated to the UE. Some examples of the non-transitory computer-readable method, apparatus and medium described above may additionally include processes, characteristics, means or instructions for transitioning to an active state from the state of discontinuous reception for data communication.
[069] [069] In some examples of the non-transitory computer-readable method, apparatus and medium described above, the transmission timing parameter comprises a relative timing parameter for transmission of the aperiodic TRS after the triggering event has occurred.
[070] [070] In some examples of the non-transitory computer-readable method, apparatus and medium described above, the trigger event comprises at least one secondary cell activation event, or a bandwidth portion switching event, or an event beam change, or a connected reception discontinuous event, or an inactive reception discontinuous event or a combination thereof.
[071] [071] A method of wireless communication in an UE is described. The method may include receiving, based on an occurrence of a trigger event associated with the UE, a trigger signal that identifies the resources to be used for transmitting an aperiodic TRS, receiving the aperiodic TRS based on the trigger signal and the identified resources, and perform at least one of a tracking function, or a synchronization function, or an alignment function, or a combination of them, in response to the occurrence of the triggering event and based on the aperiodic TRS.
[072] [072] An apparatus for wireless communication in an UE is described. The device can include a processor, memory in electronic communication with the processor, and instructions stored in memory. The instructions can be executed by the processor to make the device receive, based on the occurrence of a trigger event, associated with the UE, a trigger signal that identifies the resources to be used to transmit an aperiodic TRS, receive the Aperiodic TRS based on the trigger signal and identified resources, and perform at least one of a tracking function, or a synchronization function, or an alignment function or a combination of them, in response to the occurrence of the trigger event and based on the aperiodic TRS.
[073] [073] Another device for wireless communication in an UE is described. The apparatus may include means for receiving, based on the occurrence of a trigger event associated with the UE, a trigger signal that identifies the resources to be used for transmitting an aperiodic TRS, receiving the aperiodic TRS based on the trigger signal and identified resources, and perform at least one of a tracking function, or a synchronization function, or an alignment function, or a combination of them, in response to the occurrence of the triggering event and based on the aperiodic TRS.
[074] [074] A non-transitory, computer-readable medium storing code for wireless communication in an UE is described. The code can include instructions executable by a processor to receive, based on the occurrence of a trigger event, associated with the UE, a trigger signal that identifies the resources to be used to transmit an aperiodic TRS, receive the aperiodic TRS based the trigger signal and the identified resources, and perform at least one of a tracking function, or a synchronization function, or an alignment function, or a combination of them,
[075] [075] In some examples of the non-transitory, computer-readable method and apparatus described here, the aperiodic TRS includes a CSI-RS for tracking that can be separated from an aperiodic CSI-RS.
[076] [076] In some examples of the method, devices and non-transient computer-readable medium described here, the trigger signal can be received in a DCI.
[077] [077] In some examples of the non-transitory computer-readable methods, devices and medium described here, the trigger signal carries at least one of a field indicating that the aperiodic TRS can be triggered, or a field indicating the trigger event, where the indication of the triggering event includes the indication that the aperiodic TRS can be triggered.
[078] [078] In some examples of the non-transitory computer-readable method, apparatus and medium described here, the trigger event includes at least one of a secondary cell activation event or a bandwidth part switching event, or a beam change event, or a connected mode discontinuous reception event or an inactive mode discontinuous reception event or a combination thereof.
[079] [079] Some examples of the non-transitory computer-readable method, apparatus, and medium described here may additionally include operations, features, means or instructions for receiving an SSB transmission before the triggering event occurs.
[080] [080] Some examples of the non-transitory computer-readable method, apparatus and medium described here may additionally include operations, features, means or instructions for receiving an uplink grant DCI that identifies the resources to be used for transmitting the aperiodic TRS.
[081] [081] Some examples of the non-transitory computer-readable method, apparatus and medium described here may additionally include operations, features, means or instructions for decoding the uplink grant DCI to identify additional resources to be used for transmitting a signal. channel status information reference.
[082] [082] Some examples of the non-transitory computer-readable method, apparatus and medium described here may additionally include operations, features, means or instructions for receiving a downlink concession DCI that identifies the resources to be used for transmitting the aperiodic TRS.
[083] [083] Some examples of the non-transitory computer-readable method, apparatus, and medium described here may additionally include operations, features, means, or instructions for decoding a first part of the bits of a downlink concession field from the concession granting DCI. downlink to identify a zero lease or invalid lease, and decode bits from a second part of a second field to identify the indication that the aperiodic TRS may have been triggered, the second field being different from the first bit part of the grant field downlink.
[084] [084] In some examples of the method, devices and non-transient computer-readable medium described here, the bits in the second field indicate that the triggering event may have occurred, and the indication of the triggering event further indicates that the aperiodic TRS may be triggered.
[085] [085] Some examples of the non-transitory computer-readable method, apparatus and medium described here may additionally include operations, features, means or instructions for receiving the DCI in the same partition in which the aperiodic TRS can be received.
[086] [086] Some examples of the non-transitory computer-readable method, apparatus and medium described here may additionally include operations, characteristics, means or instructions for receiving the DCI on a partition other than the partition on which the aperiodic TRS can be received.
[087] [087] In some examples of the non-transitory, computer-readable method and apparatus described here, DCI includes at least one of a DCI fallback format or a non-fallback DCI format.
[088] [088] In some examples of the non-transitory computer-readable method, apparatus and medium described here, the DCI includes an indication of a transmission timing parameter associated with the aperiodic TRS.
[089] [089] In some examples of the method, devices and non-transient computer-readable medium described here, the trigger signal can be received on a MAC MAC.
[090] [090] Some examples of the non-transitory computer-readable method, apparatus and medium described here may additionally include operations, characteristics, means or instructions to determine that a secondary cell may have been activated based on CE MAC.
[091] [091] In some examples of the method, devices and non-transient computer-readable medium described here, the aperiodic TRS can be received within a defined waiting period after CE MAC.
[092] [092] Some examples of the non-transitory computer-readable method, apparatus and medium described here may additionally include operations, characteristics, means or instructions to determine that a beam shift event may have occurred based on the EC MAC.
[093] [093] In some examples of the non-transitory computer-readable method, apparatus and medium described here, the trigger event includes at least one of a secondary cell activation event, or a bandwidth switching event, or a beam change event, or a connected reception batch event, or an inactive batch reception event or a combination thereof.
[094] [094] In some examples of the non-transitory computer-readable method, apparatus and medium described here, the triggering event may include operations, features, means or instructions for receiving the triggering signal from an active cell of the UE, and receiving the TRS aperiodic of the secondary cell being activated at the secondary activation, where the resources identified in the trigger signal include secondary cell resources used to transmit the aperiodic TRS.
[095] [095] In some examples of the non-transitory computer-readable method, apparatus and medium described here, the triggering event may include operations, characteristics, means or instructions for receiving the triggering signal over a portion of the active bandwidth of the UE , and receive the aperiodic TRS through a bandwidth portion being activated in the bandwidth portion switching event, where the activated bandwidth portion may differ from the active bandwidth portion and where the identified resources in the trigger signal include the features of the activated bandwidth portion used to transmit the aperiodic TRS through the activated bandwidth portion.
[096] [096] In some examples of the non-transitory computer-readable method, apparatus and medium described here, the triggering event may include operations, features, means or instructions for receiving the triggering signal through an active beam from the UE, and receiving the Aperiodic TRS through a beam being activated in the beam change event, where the activated beam may be different from the active beam and where the resources identified in the trigger signal include the activated beam resources used to transmit the aperiodic TRS through the activated beam .
[097] [097] A method of wireless communication in an UE is described. The method may include receiving a configuration signal that identifies one or more resources to transmit an aperiodic TRS, determining that a trigger event associated with the UE has occurred, and receiving the aperiodic TRS based on the determination and according to one or more resources.
[098] [098] An apparatus for wireless communication in an UE is described. The device may include processor memory in electronic communication with the processor and instructions stored in memory. The instructions can be executed by the processor to make the device receive a configuration signal that identifies one or more resources to transmit an aperiodic TRS, determine that a trigger event, associated with the UE, has occurred, and receive the aperiodic TRS based determination and according to one or more resources.
[099] [099] Another device for wireless communication in an UE is described. The apparatus may include means for receiving a configuration signal that identifies one or more resources for transmitting an aperiodic TRS, determining that a trigger event associated with the UE has occurred, and receiving the aperiodic TRS based on the determination and according to one or more resources.
[0100] [0100] A non-transitory, computer readable medium storing code for wireless communication in an UE is described. The code can include instructions executable by a processor to receive a configuration signal that identifies one or more resources to transmit an aperiodic TRS, determine that a trigger event associated with the UE has occurred, and receive the aperiodic TRS based on determination and agreement with one or more resources.
[0101] [0101] Some examples of the non-transitory computer-readable method, apparatus and medium described here may additionally include operations, features, means or instructions for receiving the aperiodic TRS during a radio location occasion for the UE, while the UE may be operating in a state of discontinuous reception inactive, where the occurrence of the radio location occasion includes the triggering event.
[0102] [0102] Some examples of the non-transitory computer-readable method, apparatus and medium described here may additionally include operations, features, means or instructions for receiving the aperiodic TRS before a connected duration of a connected reception discontinuous state, determining, based on the reception of the aperiodic TRS, that the data may be about to be communicated to the UE, and transitioning to an active state from the discontinuous reception state for the data communication.
[0103] [0103] In some examples of the non-transitory, computer readable method and apparatus described here, the one or more features include a transmission timing parameter, the transmission timing parameter including a relative timing parameter to transmit the aperiodic TRS after the triggering event has occurred.
[0104] [0104] In some examples of the non-transitory, computer-readable method and apparatus described here, the trigger event includes at least one of a secondary cell activation event, or a bandwidth portion switching event, or a beam change event, or a connected reception batch event, or an inactive batch reception event or a combination thereof. BRIEF DESCRIPTION OF THE DRAWINGS
[0105] [0105] Figure 1 illustrates an example of a wireless communication system that supports aperiodic TRS, according to aspects of the present description;
[0106] [0106] Figure 2 illustrates an example of a process that supports aperiodic TRS, according to aspects of the present description;
[0107] [0107] Figure 3 illustrates an example of a process that supports aperiodic TRS, according to the aspects of the present description;
[0108] [0108] Figure 4 illustrates an example of a timing diagram that supports aperiodic TRS, according to aspects of the present description;
[0109] [0109] Figures 5 to 7 illustrate block diagrams of a device that supports aperiodic TRS, according to the aspects of the present description;
[0110] [0110] Figure 8 illustrates a block diagram of a system including a base station that supports aperiodic TRS, according to the aspects of the present description;
[0111] [0111] Figures 9 to 11 illustrate block diagrams of a device that supports aperiodic TRS, according to aspects of the present description;
[0112] [0112] Figure 12 illustrates a block diagram of a system including a UE that supports aperiodic TRS, according to the aspects of the present description;
[0113] [0113] Figures 13 to 16 illustrate methods for aperiodic TRS, according to aspects of the present description. DETAILED DESCRIPTION
[0114] [0114] Some wireless communication systems may use a reference signal transmission scheme that does not always include reference signals, for example, reference signals that are always being transmitted regardless of whether there is any communication in progress. Instead, reference signals can be considered periodic reference signals since, while they are transmitted according to a periodic schedule, periodic reference signals are not always being transmitted (for example, periodic reference signals are only transmitted when activated, and are activated for a fixed duration). While this can conserve time and frequency resources for the wireless communication system, it can be costly in terms of synchronization and time / frequency tracking between the base station and the user equipment (UE), for example, due to mobility UE, time / frequency change, etc.
[0115] [0115] Aspects of the description are initially described in the context of a wireless communications system. Broadly, aspects of the description provide a mechanism for the efficient and reliable communication of an aperiodic reference signal, such as an aperiodic tracking reference signal (TRS), between a base station and the UE. In some aspects, the transmission of the aperiodic TRS can be based on triggering since a triggering signal is transmitted in response to the occurrence of a triggering event. The trigger signal may provide, or otherwise, may indicate some or all of the resources to be used for transmitting the aperiodic TRS, such as a transmission timing parameter for transmitting the aperiodic TRS with respect to a timing of the transmission event. drive. The trigger signal can provide, explicitly and / or implicitly, or otherwise, indicate the aperiodic TRS features in a downlink control indicator (DCI), a control element (CE) of the media access control (MAC), and the like. Accordingly, and in response to the triggering event that is taking place, the base station can transmit (and the UE can receive) the aperiodic TRS using the resources identified, or otherwise indicated in the trigger signal. The UE can use the aperiodic TRS for synchronization, tracking and the like.
[0116] [0116] In another aspect, the base station and the UE can be pre-configured with some or all the resources to be used to transmit the aperiodic TRS. For example, the base station may transmit a configuration signal, such as a radio resource control signal (RRC), to the UE that identifies or otherwise indicates the resources that can be used to transmit the aperiodic TRS. The configuration signal, for example, can identify the transmission timing parameter that can be used to transmit the aperiodic TRS. The transmission delay parameter can be a relative time in which the aperiodic TRS is transmitted with respect to the occurrence of a triggering event. Accordingly, the UE and a base station can determine that the triggering event has occurred and the base station can transmit the aperiodic TRS in response to the triggering event that occurs, and according to the identified resources, or otherwise indicated in the configuration signal.
[0117] [0117] Aspects of the description are further illustrated by and described with reference to the device diagrams, system diagrams and flowcharts that relate to the aperiodic TRS.
[0118] [0118] Figure 1 illustrates an example of a wireless communication system 100, in accordance with various aspects of the present description. The wireless communications system 100 includes base stations 105, UEs 115 and a core network 130. In some instances, the wireless communications system 100 may be a Long Term Evolution (LTE) network, an LTE-Advanced network ( LTE-A), an LTE-A Pro network, or a New Radio (NR) network. In some cases, the wireless communications system 100 can support enhanced broadband communication, ultra reliable communications (for example, mission critical), low latency communications, or communications with low cost and low complexity devices.
[0119] [0119] Base stations 105 can communicate wirelessly with UEs 115 through one or more base station antennas. The base stations 105 described herein may include or may be referred to those skilled in the art as a base transceiver station, a radio base station, an access point, a radio transceiver, a Node B, an eNodeB (eNB), a Next-generation Node B, or a Giga Node B (any of which may be referred to as gNB), a domestic Node B, a domestic eNodeB, or some other terminology. Wireless communications system 100 may include base stations 105 of different types (for example, macro cell or small cell base stations). The UEs
[0120] [0120] Each base station 105 can be associated with a particular geographic coverage area 110 in which communications with several UEs 115 are supported. Each base station 105 can provide communication coverage for a respective geographic coverage area 110 via communication links 125, and communication links 125 between a base station 105 and an UE 115 can use one or more carriers. Communication links 125, illustrated in wireless communication system 100, can include uplink transmissions from a UE 15 to a base station 105, or downlink transmissions from a base station 105 to a UE 115. Downlink transmissions can also be called forward link broadcasts, while uplink broadcasts can also be called reverse link broadcasts.
[0121] [0121] Geographic coverage area 110 for a base station 105 can be divided into sectors that create only part of geographic coverage area 110, and each sector can be associated with a cell. For example, each base station 105 can provide communication coverage for a macro cell, a small cell, a hot spot, or other types of cells, or various combinations thereof. In some examples, a base station 105 may be mobile and therefore provide communication coverage for a moving geographic coverage area 110. In some examples, the different geographical coverage areas 110, associated with different technologies, may overlap, and overlapping geographic coverage areas 110, associated with different technologies, can be supported by the same base station 105 or by different base stations 105. Wireless communications system 100 may include, for example, an LTE / LTE-A / LTE network -A heterogeneous Pro or NR, in which different types of base stations 105 provide coverage for various geographic coverage areas 110.
[0122] [0122] The term "cell" refers to a logical communication entity used to communicate with a base station 105 (for example, through a carrier), and can be associated with an identifier to distinguish neighboring cells (for example, a physical cell identifier (PCID), a virtual cell identifier (VCID) operating through the same or a different carrier. In some instances, a carrier can support multiple cells, and different cells can be configured according to different protocol types (for example, machine-type communication (MTC), narrowband Internet of Things (NB-IoT), broadband enhanced mobile (eMBB), or others), which can provide access to different types of devices. In some cases, the term "cell" may refer to a part of a geographic coverage area 110 (for example, a sector), through which the logical entity operates.
[0123] [0123] UEs 115 can be dispersed throughout the wireless communication system 100, and each UE 115 can be stationary or mobile. An UE 115 can also be referred to as a mobile device, a wireless device,
[0124] [0124] Some UEs 115, such as MTC or IoT devices, can be low-cost or low-complexity devices, and can provide automated communication between machines (for example, through Machine to Machine (M2M) communication. M2M or MTC can refer to data communication technologies that allow devices to communicate with each other or with a base station 105 without human intervention. In some instances, M2M or MTC communication may include communications from devices that integrate sensors or meters to measure or capture information and relay that information to a central server or application program that can make use of the information or present the information to humans who are interacting with the program or application.Some 115 UEs may be assigned to collect information or enable automated machine behavior. Examples of applications for MTC devices include smart metering, mo inventory monitoring, water level monitoring, equipment monitoring, health care monitoring, wildlife monitoring, climatic and geological event monitoring, fleet management and tracking, remote security sensor, physical access control, and transaction-based commercial billing.
[0125] [0125] Some UEs 115 can be configured to employ modes of operation that reduce energy consumption, such as half-duplex communications (for example, a mode that supports single-way communication through transmission or reception, but not transmission and reception simultaneously). In some instances, half duplex communications can be performed at a reduced peak rate. Other energy conservation techniques for UEs 115 include entering a "deep latent" energy saving mode when not on active communications, or operating over a limited bandwidth (for example, according to narrowband communications ). In some cases, UEs 115 can be designed to support mission-critical functions (for example, mission-critical functions), and a wireless communications system 100 can be configured to provide ultra-reliable communications for those functions.
[0126] [0126] In some cases, a UE 115 may also be able to communicate directly with other UEs 115 (for example, using a non-hierarchical protocol (P2P) or device to device (D2D)). One or more, among a group of UEs 115 using communications
[0127] [0127] Base stations 105 can communicate with core network 130 and with each other. For example, base stations 105 can interface with core network 130 via return access channel links 132 (for example, via an S1 interface or other interface). Base stations 105 can communicate with each other via return access channel links 134 (for example, via an X2 interface or another interface) directly (for example, directly between base stations 105) or indirectly (for example example via core network 130).
[0128] [0128] Core network 130 can provide user authentication, access authorization, tracking, Internet Protocol (IP) connectivity, and other access, routing or mobility functions. Core network 130 may be an evolved packet core (EPC), which may include at least one mobility management entity (MME), at least the server access circuit (S-GW), and at least one access circuit Packet Data Network (PDN) (P-GW). MME can manage non-access statement functions (eg, control plan), such as mobility, authentication and support management for UEs 115 served by base stations 105 associated with EPC. User IP packets can be transferred via S-GW, which, by itself, can be connected to P-GW. P-GW can provide IP address allocation in addition to other functions. The P-GW can be connected to the IP services of network operators. Operator IP services can include Internet access, Intranet (s), an IP Multimedia Subsystem (IMS) or a Packet Switched Sequencing Service (PS).
[0129] [0129] At least some of the network devices, such as a base station 105, may include subcomponents, such as an access network entity, which can be an example of an access node controller (ANC). Each access network entity can communicate with UEs 115 through a number of other access network transmission entities, which can be referred to as a radio head, an intelligent radio head or a transmit / receive point (TRP). In some configurations, various functions of each access network entity or base station 105 can be distributed across multiple network devices (for example, radio heads and access network controllers), or consolidated into a single network device (for example, a base station 105).
[0130] [0130] The wireless communication system 100 can operate using one or more frequency bands, typically in the range of 300 MHz to 300 GHz. Generally, the 300 MHz to 3 GHz region is known as the ultra high frequency region ( UHF) or decimetric band, since it covers the wavelength range of approximately one decimeter to one meter in length. UHF waves can be blocked or redirected by buildings and environmental features. However, the waves can penetrate enough structures for a macro cell to provide service to the internally located UEs 115. The transmission of UHF waves can be associated with smaller antennas and shorter range (for example, less than 100 km) compared to transmission using lower frequencies and longer waves of the high frequency (HF) or very high frequency ( VHF) of the spectrum below 300 MHz.
[0131] [0131] The wireless communications system 100 can also operate in a super high frequency region (SHF) using frequency bands from 3 GHz to 30 GHz, also known as centimeter band. The SHF region includes bands, such as the 5 GHz industrial, scientific and medical (ISM) bands, which can be used opportunistically by devices that can tolerate interference from other users.
[0132] [0132] The wireless communications system 100 can also operate in an extremely high frequency (EHF) region (for example, from 30 GHz to 300 GHz), also known as the millimeter band. In some instances, the wireless communications system 100 can support millimeter wave (mmW) communications between UEs 115 and base stations 105, and the EHF antennas of the respective devices may be even smaller and less widely spaced than UHF antennas. . In some cases, this may facilitate the use of antenna arrays within an UE 115. However, the spread of EHF transmissions may be subject to even greater and smaller atmospheric attenuation than SHF or UHF transmissions. The techniques described here can be employed through broadcasts that use one or more different frequency regions, and the designated use of bands across those frequency regions may differ by country or regulatory body.
[0133] [0133] In some cases, wireless communications system 100 may use both licensed and unlicensed radio frequency spectrum bands. For example, wireless communications system 100 may employ License Assisted Access (LAA) technology, LTE-Unlicensed radio access technology (LTE-U) or NR technology in an unlicensed band, such as 5 GHz ISM band. When operating on unlicensed radio frequency spectrum bands, wireless devices, such as base stations 105 and UEs 115, can employ listening before speaking (LBT) procedures to ensure that a frequency channel is released before data transmission. In some cases, operations on unlicensed bands may be based on a CA configuration in conjunction with CCs operating on a licensed band (for example, LAA). Operations in the unlicensed spectrum may include downlink transmissions, uplink transmissions, non-hierarchical transmissions, or a combination thereof. Duplexing in the unlicensed spectrum can be based on frequency division duplexing (FDD), time division duplexing (TDD), or a combination of both.
[0134] [0134] In some examples, the base station 105 or UE 115 can be equipped with multiple antennas, which can be used to employ techniques such as transmission diversity, reception diversity, multiple input and multiple output communications (MIMO ), or beam formation. For example, wireless communications system 100 may use a transmission scheme between a transmission device (for example, a base station 105) and a receiving device (for example, a UE 115), where the transmission device is equipped with multiple antennas and the receiving devices are equipped with one or more antennas. MIMO communications can employ multipath signal propagation to increase spectral efficiency by transmitting or receiving multiple signals through different spatial layers, which can be referred to as spatial multiplexing. The multiple signals can, for example, be transmitted by the transmission device via different antennas or different antenna combinations. Likewise, multiple signals can be received by the receiving device via different antennas or different combinations of antennas. Each of the multiple signals can be referred to as a separate spatial sequence, and can carry bits associated with the same data sequence (for example, the same code word) or different data sequences. Different spatial layers can be associated with different antenna ports used to measure and report the channel. MIMO techniques include single user MIMO (SU-MIMO), where multiple spatial layers are transmitted to the same receiving device, and multiple user MIMO (MU-MIMO), where multiple spatial layers are transmitted to multiple devices.
[0135] [0135] Beam formation, which is also referred to as spatial filtering, directional transmission, or directional reception, is a signal processing technique that can be used on a transmitting device or a receiving device (for example, a station base 105 or UE 115) to format or direct an antenna beam (e.g., a transmit beam or a receive beam) along a spatial path between the transmitting device and the receiving device. Beam formation can be achieved by combining signals communicated through antenna elements of a set of antennas, so that signals that propagate in particular orientations with respect to a set of antennas suffer constructive interference, while others suffer from interference destructive. The adjustment of the signals communicated through the antenna elements may include a transmitting device or a receiving device that applies certain amplitude and phase deviations to the signals carried through each of the antenna elements associated with the device. The settings associated with each of the antenna elements can be defined by a beam-forming weight set associated with a particular orientation (for example, with respect to the antenna set of the transmitting or receiving device, or with respect to some other orientation).
[0136] [0136] In one example, a base station 105 can use multiple antennas or antenna sets to conduct beamform operations for directional communications with a UE 115. For example, some signals (for example, synchronization signals, reference, beam selection signals, or other control signals) can be transmitted by a base station 105 multiple times in different directions, which can include a signal being transmitted according to different sets of beamforming weights associated with different directions transmission. Transmissions in different beam directions can be used to identify (for example, base station 105 or a receiving device, such as a UE 115) a beam direction for subsequent transmission and / or reception by the base station
[0137] [0137] A receiving device (e.g. UE 115, which can be an example of a mmW receiving device) can attempt multiple receiving beams when receiving various signals from base station 105, such as synchronization signals, reference signals, beam selection signals, or other control signals. For example, a receiving device may attempt multiple reception directions by receiving through different antenna subsets, by processing received signals according to different antenna subsets, by receiving according to different receiving beamform weight sets. applied to signals received on a plurality of antenna elements of an antenna array, or by processing received signals according to different sets of receiving beamforming weights applied to signals received on a plurality of antenna elements of an array antenna, any of which can be referred to as "listening" according to different reception beams or reception directions. In some examples, a receiving device may use a single receiving beam to receive along a single beam direction (for example, when receiving a data signal). The single receiving beam can be aligned in a determined beam direction based, at least in part, on hearing, according to different receiving beam directions (for example, a determined beam direction so that it has a signal strength higher, higher signal-to-noise ratio, or otherwise an acceptable signal quality based, at least in part, on hearing, according to multiple beam directions).
[0138] [0138] In some cases, the antennas of a 105 or UE 115 base station can be located within one or more antenna sets, which can support MIMO operations, or transmit or receive beam formation. For example, one or more base station antennas or antenna sets can be located together in an antenna mount, such as an antenna tower. In some cases, the antennas or antenna sets associated with a base station 105 may be located in different geographical locations. A base station 105 can have a set of antennas with multiple rows and columns of antenna ports that the base station 105 can use to support beaming communications with a UE 115. Likewise, a UE 115 can have one or more more sets of antennas that can support various MIMO or beam forming operations.
[0139] [0139] In some cases, wireless communications system 100 may be a packet-based network that operates according to a layered protocol stack. At the user level, communications in the support or in the Packet Data Convergence Protocol (PDCP) layer can be based on IP. A Radio Link Control (RLC) layer can, in some cases, perform the segmentation and re-assembly of the package to communicate through logical channels. A Medium Access Control (MAC) layer can perform priority handling and multiplexing of logical channels in transport channels. The MAC layer can also use the hybrid automatic retry request (HARQ) to provide retransmission at the MAC layer to improve link efficiency. In the control plane, the Radio Resource Control (RRC) protocol layer can provide for the establishment, configuration and maintenance of an RRC connection between an UE 115 and a base station 105 or core network 130 supporting radio supports for the user plan data. In the Physical layer (PHY), transport channels can be mapped to physical channels.
[0140] [0140] In some cases, UEs 115 and base stations 105 can support data retransmissions to increase the likelihood that data will be received successfully. HARQ feedback is a technique for increasing the likelihood that data will be received correctly over a communication link 125. HARQ can include a combination of error detection (for example, using a cyclic redundancy check (CRC)), correction of lead error (FEC), and retransmission (eg, automatic retry request (ARQ)).
[0141] [0141] Time intervals in LTE or NR can be expressed in multiples of a basic time unit, which can, for example, refer to a sampling period of Ts = 1 / 30,720,000 seconds. The time intervals of a communications resource can be organized according to the radio frames, each having a duration of 10 milliseconds (ms), where the frame period can be expressed as Tf = 307,200 Ts. Radio frames can be identified by a system frame number (SFN) ranging from 0 to 1023. Each frame can include 10 subframes numbered 0 to 9, and each subframe can have a duration of 1 ms. A subframe can be further divided into 2 partitions, each having a duration of 0.5 ms, and each partition may contain 6 or 7 modulation symbol periods (for example, depending on the length of the pre-attached cyclic prefix to each period symbol). Excluding the cyclic prefix, each symbol period can contain 2048 sampling periods. In some cases, a subframe may be the smallest programming unit of the wireless communications system 100, and may be referred to as a transmission time interval
[0142] [0142] In some wireless communications systems, a partition can be further divided into multiple mini partitions containing one or more symbols. In some cases, a mini partition or mini partition symbol may be the smallest programming unit. Each symbol can vary in duration depending on the spacing of the subcarrier or the operating frequency band, for example. In addition, some wireless communications systems can implement partition aggregation, in which multiple partitions or mini partitions are aggregated together and used for communication between an UE 115 and a base station 105.
[0143] [0143] The term "bearer" refers to a set of radio frequency spectrum resources having a defined physical layer structure to support communications over a communication link
[0144] [0144] The organizational structure of carriers may be different for different radio access technologies (for example, LTE, LTE-A, LTE-A Pro, NR, etc.). For example, communications through a carrier can be organized according to TTIs or partitions, each of which can include user data in addition to control or signaling information to support the decoding of user data. A carrier may also include dedicated acquisition signaling (for example, synchronization signals or system information, etc.) and control signaling that coordinates the operation for the carrier. In some examples (for example, in a carrier aggregation configuration), a carrier may also display the acquisition signal or control signal that coordinates operations for other carriers.
[0145] [0145] Physical channels can be multiplexed in a carrier, according to various techniques. A physical control channel and a physical data channel can be multiplexed in a downlink carrier, for example, using time division multiplexing techniques
[0146] [0146] A carrier can be associated with a particular bandwidth of the radio frequency spectrum, and, in some instances, the carrier bandwidth can be referred to as a "system bandwidth" of the carrier or the wireless communications system
[0147] [0147] In a system employing MCM techniques, a feature element can consist of a symbol period (for example, a modulation symbol duration) and a subcarrier, where the symbol period and the subcarrier spacing are inversely related. The number of bits carried by each resource element may depend on the modulation scheme (for example, the order of the modulation scheme). As such, the more resource elements that an UE 115 receives and the higher the order of the modulation scheme, the higher the data rate for the UE 115. In MIMO systems, a wireless communications resource can refer to a combination of a radio frequency spectrum resource, a time resource, and a spatial resource (for example, spatial layers), and the use of multiple spatial layers can further increase the data rate for communications with an UE 115.
[0148] [0148] Wireless communications system devices 100 (for example, base stations 105 or UEs 115) may have a hardware configuration that supports communications over a particular carrier bandwidth, or may be configurable for support communications across one of a set of carrier bandwidths. In some examples, wireless communications system 100 may include base stations 105 and / or UEs that can support simultaneous communications through carriers associated with more than a different carrier bandwidth.
[0149] [0149] Wireless communication system 100 can support communication with a UE 115 in multiple cells or carriers, a feature that can be referred to as carrier aggregation (CA) or multiple carrier operation. A UE 115 can be configured with multiple downlink CCs and one or more uplink CCs, according to a carrier aggregation configuration. Carrier aggregation can be used with both FDD and TDD component carriers.
[0150] [0150] In some cases, the wireless communications system 100 may use the enhanced component carriers (eCCs). An eCC can be characterized by one or more characteristics that include carrier channel bandwidth or broader frequency, shorter symbol duration, shorter TTI duration or modified control channel configuration. In some cases, an eCC can be associated with a carrier aggregation configuration or a dual connectivity configuration (for example, when multiple server cells have a less than ideal or non-ideal return access channel link). An eCC can also be configured for use on the unlicensed spectrum or shared spectrum (for example, where more than one operator can use the spectrum). An eCC characterized by carrier bandwidth can include one or more segments that can be used by UEs 115 that are not able to monitor all carrier bandwidth or are otherwise configured to use a carrier bandwidth. limited carrier (for example, to conserve energy).
[0151] [0151] In some cases, an eCC may use a different symbol duration than other CCs, which may include the use of a reduced symbol duration compared to the symbol durations of other CCs. A shorter symbol life can be associated with increased spacing between adjacent subcarriers. A device, such as a UE 115 or base station 105, using eCCs can transmit broadband signals (e.g., according to the frequency channel or carrier bandwidths of 20, 40, 60, 80 MHz, etc.). ) with reduced symbol durations (for example, 16.67 microseconds). An eCC TTI can consist of one or multiple symbol periods. In some cases, the TTI duration (that is, the number of symbol periods in a TTI) can vary.
[0152] [0152] Wireless communications systems, such as an NR system, can use any combination of licensed, shared and unlicensed spectrum bands, among others. The flexibility of eCC symbol duration and subcarrier spacing can allow the use of eCC across multiple spectra. In some instances, the shared NR spectrum can increase spectrum utilization and spectral efficiency, specifically through the sharing of dynamic vertical (eg, through frequency) and horizontal (eg, over time) resource sharing.
[0153] [0153] One or more of the base stations 105 may determine that a trigger event associated with a UE 115 has occurred. Base stations 105 can transmit, based, at least in part, on determining a trigger signal that identifies the resources to be used to transmit an aperiodic TRS. Base station 105 can transmit the aperiodic TRS based, at least in part, on the trigger signal and the identified resources.
[0154] [0154] One or more of the base stations 105 can transmit a configuration signal to a UE 115, the configuration signal identifying a transmission timing parameter for transmitting an aperiodic TRS. Base stations 105 can determine that a trigger event, associated with UE 115, has occurred. The base stations 105 can transmit the aperiodic TRS to the UE 115 based, at least in part, on the determination and, according to the transmission timing parameter.
[0155] [0155] One or more of the UEs 115 may determine that a trigger event, associated with the UE 115, has occurred. The UEs 115 may receive, based at least in part, on the determination, a trigger signal that identifies the resources to be used for the transmission of an aperiodic TRS. UEs 115 can receive the aperiodic TRS based, at least in part, on the trigger signal and identified resources.
[0156] [0156] One or more of the UEs 115 can receive a configuration signal that identifies a transmission timing parameter to transmit an aperiodic TRS. UE 115 can determine that a trigger event, associated with UE 115, has occurred. The UE 115 can receive the aperiodic TRS based, at least in part, on the determination and, according to the transmission timing parameter.
[0157] [0157] One or more of the UEs 115 may receive, based, at least in part, on an occurrence of a trigger event associated with the UE 115, a trigger signal that identifies the resources to be used to transmit an aperiodic TRS. UEs 115 can receive the aperiodic TRS based, at least in part, on the trigger signal and identified resources. UEs 115 may perform at least one of a tracking function, or a synchronization function, or an alignment function, or a combination of them, in response to the occurrence of the triggering event and based, at least in part, on the Aperiodic TRS.
[0158] [0158] One or more of the UEs 115 can receive a configuration signal that identifies one or more resources for transmitting an aperiodic TRS. UEs 115 can determine that a trigger event, associated with UE 115, has occurred. 115 UEs can receive the aperiodic TRS based, at least in part, on determination and according to one or more resources.
[0159] [0159] Figure 2 illustrates an example of a process 200 that supports aperiodic TRS according to various aspects of the present description. In some examples, process 200 can implement aspects of wireless communication system 100. Process 200 can include a base station 205 and a UE 210, which can be examples of corresponding devices described here. Broadly speaking, process 200 illustrates an example of an aperiodic TRS transmission scheme based on drive.
[0160] [0160] In 215, base station 205 can determine that a trigger event has occurred for the UE
[0161] [0161] In 220, the UE 210 can determine that a trigger event occurred for the UE 210. In some respects, the UE 210 can determine that the trigger event occurred internally, for example, based on the UE 210, starting the triggering event, or externally based on the signal received from the base station 205 or some other entity. In some aspects, such as when the UE 210 is operating in a DRX mode, the UE 210 can determine, or otherwise detect, the trigger event according to a schedule associated with the DRX mode.
[0162] [0162] In some respects, one or more SSB transmissions may have occurred before the triggering event. For example, base station 205 can transmit SSBs in a broadcast broadcast to the UEs operating within its coverage area. SSB transmissions can identify or otherwise provide an indication of at least a portion of the information associated with the trigger event, for example, the SSB can indicate a change in an active beam, a change in a BWP, and the like. In some respects, the transmission of SSB signals can provide an indication that the triggering event has occurred or will occur at some point. In this way, the base station 205 and / or the UE 210 can use, at least to a certain extent, SSB transmissions to detect or otherwise determine that the triggering event has occurred.
[0163] [0163] At 225, base station 205 can transmit (and UE 210 can receive) a trigger signal. In some respects, the trigger signal can identify some or all of the resources that must be used to transmit an aperiodic TRS. Resources identified or otherwise indicated may include time and / or frequency resources. The trigger signal can identify or otherwise indicate resources explicitly (for example, using one or more bits or fields) and / or implicitly (for example, based on some other event indicated in the trigger signal that serves as a trigger for UE 210).
[0164] [0164] In some aspects, the trigger signal can be transmitted in or otherwise indicated by a DCI. For example, the DCI can include bits or fields that explicitly indicate that the aperiodic TRS has been triggered, a transmission timing parameter associated with the aperiodic TRS. In another example, the DCI may include bits or fields that identify or otherwise indicate the triggering event. In this example, the indication of the triggering event can serve as an indication that the aperiodic TRS has been triggered. As an example, a DCI function (for example, a BWP switching DCI)
[0165] [0165] In some ways, the DCI can be a downlink DCI. For example, the resources to be used for the transmission of aperiodic TRS can be indicated in the downlink concession field of the downlink DCI. As another example, the downlink DCI may include a false lease or invalid lease (for example, a zero lease) in the downlink lease field and then use another (for example, different) field to provide an indication that the Aperiodic TRS has been triggered and / or the resources to be used for the transmission of Aperiodic TRS. As such, aspects of the present description may use a false downlink concession (or invalid downlink concession or zero downlink concession) and give another purpose to an existing field typically used for a different function to provide an aperiodic TRS indication. In addition, this downlink DCI can also provide an indication of the trigger event, such as SCell activation / deactivation, BWP switching, beam switching, and the like. An example of a false downlink lease might include a type 0 resource allocation with 0 RB (all zeros), a type 1 resource allocation, like all 1s used in a frequency domain resource designation field, and the like . In this way, base station 205 can set one or more bits of a downlink DCI downlink lease field to indicate a zero lease or invalid lease, and then set the bits of a second field to indicate the aperiodic TRS was triggered. The bits set in the second field can indicate that the triggering event has occurred, and the indication that the triggering event has occurred can provide an indication that the aperiodic TRS transmission has been triggered. The base station 205 and / or the UE 210 can know that an aperiodic TRS transmission is triggered whenever the triggering event has occurred.
[0166] [0166] In some ways, the DCI can be an uplink DCI. The uplink DCI can extend the CSI-RS drive, for example, the aperture TRS drive indication can be separated from an aperture CSI-RS drive indication. Accordingly, the uplink DCI can be configured to provide an indication that the aperiodic TRS has been triggered (for example, identifying or otherwise indicating the resources to be used for transmitting aperiodic TRS) in combination with or separately from a CSI-RS drive.
[0167] [0167] In another example, the trigger signal can be transmitted in a CE MAC. For example, the CE MAC can be configured to provide an indication that the trigger event has occurred, for example, an indication that a SCell has been activated or deactivated, or that a beam has been altered (for example, a PDSCH beam), and the like. In some respects, the transmission of the CE MAC may implicitly signal the transmission delay for the aperiodic TRS. For example, aperiodic TRS can be transmitted a specified time after the CE MAC has been transmitted, for example, a defined waiting period, such as a defined number of symbols, or a fixed period of time, and the like, after which the CE MAC is transmitted. In this way, the drive based on the CE MAC set can be used where the CE MAC command, for the triggering event can also trigger the aperiodic TRS transmission. The deviation or waiting period defined between the CE MAC command and the aperture TRS transmission can be hard coded and / or configured between the base station 205 and the UE 210.
[0168] [0168] At 230, base station 205 can transmit (and UE 210 can receive) an aperiodic TRS. Aperiodic TRS can be transmitted based, at least in some respects, on the trigger signal and on the identified identified resources. For example, the aperiodic TRS can be transmitted according to the transmission delay parameter, according to a defined waiting period, etc., as identified or otherwise indicated in the trigger signal. UE 210 and base station 205 can use aperiodic TRS for various tracking / synchronization / alignment functions.
[0169] [0169] Thus, an example of a trigger event can be a SCell being activated / deactivated. In some respects, aperiodic TRS transmission may be tied to the CE MAC command to activate SCell. The timeline with respect to the CE MAC command can be hard coded. In some respects, the trigger signal can be sent in the DCI (for example, an aperiodic TRS triggered by DCI), where SCell is detected before the SCell RRC configuration. The DCI-based trigger of the aperiodic TRS can include the aperiodic TRS being decoded based on the SSB trace. For example, a disabled SSB SCell can be monitored periodically. For a carrier without SSB, CSI-RS based tracking can also be used. In some respects, the indication of the trigger signal can be transmitted, or otherwise, indicated to the UE 210 through one or more of the cells currently active (for example, a primary cell or one or more secondary cells that are active with the UE 210) that are being used for wireless communications between the UE 210 and the base station 205. The trigger signal can carry or otherwise carry an indication of the resources that are for the new SCell being activated for the UE 210 , for example, time / frequency resources corresponding to the activated SCell. The aperiodic TRS can then be transmitted via the activated SCell features (for example, from SCell), which the UE 210 can then use for tracking / synchronization / alignment functions with respect to the newly activated SCell.
[0170] [0170] Another example of a trigger event can be the BWP switching. In an aperiodic TRS example driven by DCI, the DCI trigger of the aperiodic TRS can be decoded based on SSB tracking. The SSB can be periodically monitored regardless of the BWP switching. When BWP switching is based on DCI, the BWP switching DCI can also trigger the aperiodic TRS. The timeline with respect to the DCI can be configured through DCI signaling or
[0171] [0171] Another example of a trigger event can be a beam switching event. In some respects, the aperiodic TRS can be triggered after the PDSCH beam changes. For PDSCH beam changes, there may be no issues regarding decoding the aperture TRS DCI drive. In some aspects, the activation of the aperiodic TRS transmission can be tied to the DCI indicating the PDSCH beam change. The timeline, with respect to the DCI that indicates that the beam change
[0172] [0172] Another example of a trigger event can be based on the UE 210 operating in a connected DRX mode. In some ways, an EU-specific RRC signaling can be used to configure the aperiodic TRS. This can support the transmission of the aperiodic TRS before the connected DRX on duration. The deviation between the aperiodic TRS and the connected duration of connected DRX can be configured specifically for UE. The UE 210 can assume that the aperiodic TRS is transmitted before the connected duration of the connected DRX, when the UE 210 must be programmed for communications. In some respects for an aperiodic TRS triggered by DCI, the UE 210 can support the aperiodic TRS during the connected duration of connected DRX, via aperiodic TRS triggered by DCI. The UE 210 can maintain tracking, at least up to a point,
[0173] [0173] Another example of a trigger event can be based on the UE 210 operating in a DRX in an idle mode. Aspects of the present description may support transmission of aperiodic TRS before or during a radio localization occasion of XRD inactive. If the aperiodic TRS is transmitted during the occasion of radio localization of XRD inactive, offline processing of the aperiodic TRS can be considered. The UE 210 may assume that the aperiodic TRS is transmitted before or during the radio localization occasion of DRX inactive, for example, when the UE 210 must be radio located. Aspects of the aperiodic TRS drive can be configured, for example, cell specific, through RRC signaling.
[0174] [0174] Figure 23 illustrates an example of a process 300 that supports aperiodic TRS according to various aspects of the present description. In some examples, process 300 may implement aspects of wireless communication system 100 and / or process 200. Process 300 may include a base station 305 and a UE 310, which can be examples of the corresponding devices described here. Broadly speaking, process 300 illustrates an example of aperiodic TRS transmission based on preconfiguration.
[0175] [0175] At 315, base station 305 can transmit (and UE 310 can receive) a configuration signal. The configuration signal can identify or otherwise provide an indication of one or more resources that can be used to transmit an aperiodic TRS. Broadly speaking, the resources identified or otherwise indicated can be resources of time and / or frequency. In one example, the configuration signal can identify or otherwise indicate a transmission timing parameter as some or all of the resources that can be used for the transmission of aperiodic TRS. In some aspects, the configuration signal may be an RRC signal, such as a cell-specific and / or UE-specific RRC signal. The configuration signal can be transmitted once, for example, during the initial cell acquisition, and / or can be transmitted multiple times, for example, during a reconfiguration procedure.
[0176] [0176] In some respects, the transmission timing parameter can be an absolute timing parameter and / or a relative timing parameter for transmitting the aperiodic TRS. As an example, the transmission timing parameter can be a relative timing parameter for transmission of the aperiodic TRS after the triggering event has occurred. For example, the transmission timing parameter can be a defined number of symbols, a defined length of time, and the like, in which base station 305 transmits the transmission of the aperiodic TRS after the triggering event has occurred.
[0177] [0177] In some respects, the configuration signal can provide the semi-static configured aperture TRS. The aperture TRS transmission timing can be configured (for example, on an EU-specific RRC signal) with respect to the trigger event (such as a periodic trigger event on a DRX cycle). The aperiodic TRS can be triggered before an occasion of radio location DRX inactive, before a duration connected to DRX in connected mode, and the like. A deviation between the aperiodic TRS on the occasion of radio location DRX inactive mode and / or connected duration DRX in connected mode can be configurable (for example, within a certain range). The aperiodic TRS can be transmitted when the UE is located radio and / or when the UE is programmed in that cycle, for example, it may not always be transmitted with periodic events, such as each DRX cycle. In this way, the aperiodic TRS can serve as a wake-up call for the UE.
[0178] [0178] At 320, base station 305 can determine that a trigger event has occurred for the UE
[0179] [0179] At 325, UE 310 can determine that a trigger event has occurred for UE 310. In some respects, UE 310 can determine that the trigger event has occurred internally, for example, based on UE 310 starting the event trigger, or externally based on the signal received from the base station 305 or some other entity. In some aspects, such as when the UE 310 is operating in a DRX mode, the UE 310 can determine, or otherwise detect, the trigger event according to a schedule associated with the DRX mode.
[0180] [0180] In some respects, one or more SSB transmissions may have occurred before the triggering event. For example, base station 305 can transmit SSBs in a broadcast broadcast to the UEs operating within its coverage area. SSB transmissions can identify or otherwise provide an indication of at least a portion of the information associated with the trigger event, for example, the SSB can indicate a change in an active beam, a change in a BWP, and the like. In some respects, the transmission of SSB signals can provide an indication that the triggering event has occurred or will occur at some point. Thus, base station 305 and / or UE 310 can use, at least to a certain extent, SSB transmissions to detect, or otherwise determine, that the triggering event has occurred.
[0181] [0181] In 330, base station 305 can transmit (and UE 310 can receive) an aperiodic TRS. The aperiodic TRS can be transmitted based, at least in some respects, on the trigger signal and the resources identified or otherwise indicated from the configuration signal. For example, the aperiodic TRS can be transmitted according to the transmission delay parameter, according to a defined waiting period, etc., as identified or otherwise indicated in the configuration signal. The UE 310 and base station 305 can use aperiodic TRS for various tracking / synchronization / alignment functions.
[0182] [0182] Figure 4 illustrates an example of a timing diagram 400 that supports aperiodic TRS according to various aspects of the present description. In some examples, timing diagram 400 may implement aspects of wireless communication system 100 and / or processes 200/300. Aspects of timing diagram 400 can be implemented by the UE and / or a base station, which can be examples of the corresponding devices described here. Broadly speaking, timing diagram 400 illustrates an example of aperiodic TRS transmission when a UE is operating in a connected DRX mode.
[0183] [0183] Generally, the base station and UE can be configured for periodic TRSs 405. Periodic TRSs 405 may not always be on, but can only be transmitted according to a periodic schedule when periodic TRS transmissions are activated. The connected DRX mode can generally include one or more linked duration times 410 in which the UE transitions to a linked duration in order to monitor radio location signals from a base station. For example, the UE can transition to a linked duration for a period of time linked to 401-a and monitor a radio location signal from the base station. Once the UE determines that there is no radio location signal received, the UE can again transition to an inactive or off state (for example, inactive). Generally, while the UE is in the inactive or off state, periodic TRSs 405 may not be transmitted, for example, the periodic TRS is inactive. Thus, for example, the periodic TRS 405-a, 405-b, 405-c and 405d may not be transmitted.
[0184] [0184] The base station may determine that a trigger event has occurred with respect to the UE, for example, the base station may have data to be communicated to the UE. In some aspects, the base station may pre-configure the UE with some or all of the resources to be used for the transmission of aperiodic TRS, such as by transmitting a configuration signal to the UE, as described with reference to figure 3. Accordingly, based on the triggering event having occurred and according to the configuration information, the base station can transmit an aperiodic TRS 415 before the connected duration time 410-b. In some respects, the UE may know, based on the configuration information signaled from the base station, that an aperiodic TRS will be transmitted immediately before (as shown) and / or during (not shown) the linked duration period 410 -B.
[0185] [0185] Accordingly, the UE can wake up early (for example, before the linked duration period 410-b) and detect aperiodic TRS 415. Based on the detection of aperiodic TRS 415, the UE can determine or otherwise way to detect that the triggering event has occurred (for example, the presence of aperiodic TRS 415 provides an indication that the triggering event has occurred). Accordingly, the UE can transition to the connected duration time 410-b and receive the radio signal location of the base station. Based on the radio location signal, the UE can transition to an active state in the connected DRX mode and receive data transmission for the period of time 420. In some respects, transmissions from the periodic TRS 405 can be activated based on the event activation that occurs for the UE. In this way, the periodic TRS 405-e, 405-f and 405- g can be transmitted. In some respects, aperiodic TRS 415 can provide a first level of synchronization / tracking and periodic TRSs 405-e, 405-f and 405-g can provide additional synchronization and tracking.
[0186] [0186] Figure 5 illustrates a block diagram 500 of a wireless device 505 that supports aperiodic TRS in accordance with aspects of the present description. The wireless device 505 can be an example of the aspects of a base station 105, as described here. The wireless device 505 can include the receiver 510, the base station communications manager 515, and the transmitter 520. The wireless device 505 can also include a processor. Each of these components can be in communication with the other (for example, through one or more buses).
[0187] [0187] Receiver 510 can receive information, such as packets, user data or control information associated with various information channels (for example, control channels, data channels, and information related to aperiodic TRS, etc.). The information can be passed on to other components of the device. The receiver 510 can be an example of the aspects of the transceiver 835 described with reference to figure 8. The receiver 510 can use a single antenna or a set of antennas.
[0188] [0188] The base station communications manager 515 can be an example of the aspects of the base station communications manager 815 described with reference to figure 8.
[0189] [0189] The communications manager of base station 515 and / or at least some of its various subcomponents can be implemented in hardware, software executed by a processor, firmware or any combination thereof. If implemented in software run by a processor, the functions of the 515 base station communications manager and / or at least some of its various subcomponents can be performed by a general purpose processor, a digital signal processor (DSP), a circuit application-specific integrated (ASIC), a field programmable port set (FPGA), or other programmable logic device, discrete port or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described herein description. The base station communications manager 515 and / or at least some of its various subcomponents, can be physically located in various positions, including distributed so that parts of the functions are implemented in different physical locations by one or more physical devices. In some instances, the base station communications manager 515 and / or at least some of its various subcomponents may be a separate and distinct component, in accordance with various aspects of the present description. In other examples, the base station communications manager 515 and / or at least some of its various subcomponents can be combined with one or more other hardware components, including, but not limited to, an I / O component, a transceiver, a network server, other computing device, one or more other components described in the present description, or a combination thereof according to various aspects of the present description.
[0190] [0190] The base station communications manager 515 can determine that a trigger event associated with a UE has occurred, transmit, based on the determination, a trigger signal that identifies the resources to be used to transmit an aperiodic TRS, and transmit the aperiodic TRS based on the trigger signal and the identified resources. The base station communications manager 515 can also transmit a configuration signal to a UE, the configuration signal identifying a transmission timing parameter to transmit an aperiodic TRS, determine that a trigger event associated with the UE has occurred, and transmit the Aperiodic TRS for the UE based on the determination and according to the transmission timing parameter.
[0191] [0191] The transmitter 520 can transmit signals generated by other components of the device. In some examples, transmitter 520 may be located together with a receiver 510 on a transceiver module. For example, transmitter 510 can be an example of the aspects of transceiver 835 described with reference to figure 8. Transmitter 520 can use a single antenna or a set of antennas.
[0192] [0192] Figure 6 illustrates a block diagram 600 of a wireless device 605 that supports aperiodic TRS according to aspects of the present description. The wireless device 605 can be an example of the aspects of a wireless device 505 or a base station 105 as described with reference to figure 5. The wireless device 605 can include the receiver 610, the base station communications manager 615, and the transmitter 620. The wireless device 605 can also include a processor. Each of these components can be in communication with the other (for example, through one or more buses).
[0193] [0193] Receiver 610 can receive information, such as packet information, user data or control associated with various information channels (for example, control channels, data channels and information related to aperiodic TRS, etc.) . The information can be passed on to other components of the device. The receiver 610 can be an example of the aspects of the transceiver 835 described with reference to figure 8. The receiver 610 can use a single antenna or a set of antennas.
[0194] [0194] The base station communications manager 615 can be an example of the aspects of the base station communications manager 815 described with reference to figure 8.
[0195] [0195] The base station communications manager 615 can also include the trigger event manager 625, the trigger signal manager 630, and the aperture TRS manager 635.
[0196] [0196] Trigger event manager 625 can determine that a trigger event associated with a UE has occurred and determine that a trigger event associated with the UE has occurred. In some cases, the triggering event can include at least one of a SCell activation event, or a BWP switching event, or a beam shift event, or a connected mode batch reception event, or a discontinuous inactive reception, or a combination thereof.
[0197] [0197] The trigger signal manager 630 can transmit, based on the determination, a trigger signal that identifies the resources to be used for transmission of an aperiodic TRS and transmit a configuration signal to a UE, the configuration signal identifying a transmission timing parameter for transmitting an aperiodic TRS. In some cases, the transmission timing parameter includes a timing parameter relating to the transmission of the aperiodic TRS after the triggering event has occurred.
[0198] [0198] The aperiodic TRS manager 635 can transmit the aperiodic TRS based on the trigger signal and the identified resources and transmit the aperiodic TRS to the UE based on the determination and according to the transmission timing parameter. In some cases, the aperiodic TRS includes a channel status information reference signal (CSI-RS) for tracking.
[0199] [0199] The transmitter 620 can transmit the signals generated by other components of the device. In some examples, transmitter 620 can be located next to a receiver 610 on a transceiver module. For example, transmitter 620 can be an example of the aspects of transceiver 835 described with reference to figure 8. Transmitter 620 can use a single antenna or a set of antennas.
[0200] [0200] Figure 7 illustrates a block diagram 700 of a base station communications manager 715 that supports aperiodic TRS in accordance with aspects of the present description. The base station communications manager 715 can be an example of the aspects of a base station communications manager 515, a base station communications manager 615, or a base station communications manager 815, described with reference to figures 5, 6 and 8. The base station communications manager 715 can include the trigger event manager 720, the trigger signal manager 725, the aperture TRS manager 730, the DCI trigger manager 735, the CE manager MAC 740, the I-DRX 745 state manager, and the C-DRX 750 state manager. Each of these modules can communicate,
[0201] [0201] The trigger event manager 720 can determine that a trigger event associated with a UE has occurred and determine that a trigger event associated with the UE has occurred. In some cases, the trigger event includes at least one of a SCell activation event, or a BWP switching event, or a beam shift event, or a connected mode batch reception event, or a reception event discontinuous inactive, or a combination thereof.
[0202] [0202] The trigger signal manager 725 can transmit, based on the determination, a trigger signal that identifies the resources to be used for the transmission of an aperiodic TRS and transmit a configuration signal to a UE, the configuration signal identifying a transmission timing parameter to transmit an aperiodic TRS. In some cases, the transmission timing parameter includes a relative timing parameter for transmitting the aperiodic TRS after the triggering event has occurred.
[0203] [0203] The aperiodic TRS manager 730 can transmit the aperiodic TRS based on the trigger signal and the identified resources and transmit the aperiodic TRS to the UE, based on the determination, and according to the transmission timing parameter. In some cases, the aperiodic TRS includes a CSI-RS for tracking.
[0204] [0204] The DCI 735 trigger manager can perform an SSB transmission before the trigger event occurs, the SSB transmission indicating at least part of the information associated with the trigger event, the transmission of an uplink DCI that identifies the resources to be used for transmission of the aperiodic TRS, the configuration of the uplink DCI to identify the additional resources to be used for the transmission of a channel status information reference signal, the transmission of a downlink DCI that identifies the resources to be used for the transmission of the aperiodic TRS, the setting of bits in a second field to indicate that the aperiodic TRS has been triggered, the second field being different from the downlink concession field, the transmission of the DCI in the same partition in which the TRS aperiodic is transmitted, the transmission of the DCI on a different partition than the partition on which the aperiodic TRS is transmitted, and the setting of a downlink DCI downlink lease field to indicate a zero lease or invalid lease.
[0205] [0205] The CE MAC manager 740 can configure the CE MAC to indicate that a SCell has been activated and configure the CE MAC to indicate that a beam shift event has occurred. In some cases, the trigger signal is transmitted on an EC MAC. In some cases, the aperiodic TRS is transmitted for a defined waiting period after CE MAC. In some cases, the trigger event includes at least one of a SCell activation event, or a BWP switching event, or a beam shift event, or a connected mode batch reception event, or a discontinuous inactive reception, or a combination thereof.
[0206] [0206] The state manager I-DRX 745 can identify a radio localization occasion for the UE while the UE is operating in a discontinuous reception state inactive, where the radio localization occasion includes the triggering event.
[0207] [0207] The C-DRX 750 state manager can determine that data must be communicated to the UE while the UE is operating in a connected reception batch state, identifying a connected period where the UE wakes up from the batch receiving state , and transmit the aperiodic TRS to or during the connected period, according to the transmission timing parameter.
[0208] [0208] Figure 8 illustrates a diagram of a system 800 including an 805 device that supports aperiodic TRS according to aspects of the present description. The device 805 can be an example of or include the components of the wireless device 505, the wireless device 605, or a base station 105, as described above, for example, with reference to figures 5 and 6. The device 805 can include components for two-way communications and voice and data including components for transmitting and receiving communications, including the base station communications manager 815, processor 820, memory 825, software 830, transceiver 835, antenna 840, 845 network communications, and the interstation 850 communications manager. These components can be in electronic communication via one or more buses (for example, the 810 bus). The 804 device can communicate wirelessly with one or more UEs
[0209] [0209] The 820 processor may include an intelligent hardware device (for example, a general purpose processor, a DSP, a central processing unit (CPU), a microcontroller, an ASIC, an FPGA, a programmable logic device, a discrete gate or transistor logic component, a discrete hardware component, or any combination thereof). In some cases, the 820 processor can be configured to operate a memory pool using a memory controller. In some cases, a memory controller can be integrated with the 820 processor. The 820 processor can be configured to execute computer-readable instructions stored in a memory to perform various functions (for example, functions or tasks supporting aperiodic TRS).
[0210] [0210] The 825 memory can include random access memory (RAM) and read-only memory (ROM). The 825 memory can store computer executable and computer readable software 830 including instructions that, when executed, cause the processor to perform the various functions described here. In some cases, the 825 memory may contain, among other things, a basic input / output system (BIOS) that can control the basic operation of hardware or software, such as interaction with peripheral components or devices.
[0211] [0211] Software 830 may include code to implement aspects of this description, including code to support aperiodic TRS. Software 830 can be stored on a non-transitory, computer readable medium, such as system memory or other memory. In some cases, the 830 software may not be directly executable by the processor, but it can cause a computer (for example, when compiled and run) to perform the functions described here.
[0212] [0212] The 835 transceiver can communicate in a bidirectional way, through one or more antennas, wired or wireless links as described above. For example, the 835 transceiver can represent a wireless transceiver and can communicate bidirectionally with another wireless transceiver. The 835 transceiver may also include a modem to modulate the packets and deliver the modulated packets to the antennas for transmission purposes, and to demodulate packets received from the antennas.
[0213] [0213] In some cases, the wireless device may include a single 840 antenna. However, in some cases, the device may have more than one 840 antenna, which may be capable of simultaneously transmitting or receiving multiple wireless transmissions.
[0214] [0214] The network communications manager 845 can manage communications with the core network (for example, through one or more wired return access channel links). For example, the network communications manager 845 can manage the transfer of data communications to client devices, such as one or more UEs 115.
[0215] [0215] The interstation 850 communications manager can manage communications with another base station 105 and may include a controller or programmer to control communications with UEs 115 in cooperation with other 105 base stations. For example, the interstation 850 communications manager can coordinate scheduling for transmissions to UEs 115 for various interference mitigation techniques, such as beam formation or joint transmission. In some instances, the interstation 850 communications manager may provide an X2 interface within a wireless LTE / LTE-A communication network technology to provide communication between base stations 105.
[0216] [0216] Figure 9 illustrates a block diagram
[0217] [0217] The 910 receiver can receive information, such as packets, user data, or control information associated with various information channels (for example, control channels, data channels, and aperiodic TRS-related information, etc.). ) Information can be passed on to other device components. The receiver 910 can be an example of the aspects of transceiver 1235 described with reference to figure 12. The receiver 910 can use a single antenna or a set of antennas.
[0218] [0218] The communications manager UE 915 can be an example of aspects of the communications manager UE 1215 described with reference to figure 12.
[0219] [0219] The communications manager UE 915 and / or at least one of its several subcomponents can be implemented in hardware, software executed by a processor, firmware, or any combination thereof. If implemented in software run by a processor, the functions of the EU 915 communications manager, and / or at least some of its various subcomponents, can be performed by a general purpose processor, a DSP,
[0220] [0220] The communications manager UE 915 can determine that a trigger event associated with the UE has occurred, receive, based on the determination, a trigger signal that identifies the resources to be used for transmission of an aperiodic TRS, and receive the TRS aperiodic based on the trigger signal and the resources identified. The communications manager UE 915 can also receive a configuration signal that identifies a transmission timing parameter to transmit a
[0221] [0221] The communications manager UE 915 may receive, based, at least in part, on an occurrence of a trigger event associated with the UE, a trigger signal that identifies the resources to be used for transmission of an aperiodic TRS. The communications manager UE 915 can also receive the aperiodic TRS based, at least in part, on the trigger signal and the identified resources. The communications manager UE 915 can also perform at least one of a tracking function, or a synchronization function, or an alignment function, or a combination of them, in response to the occurrence of the triggering event and based on at least in part, in the aperiodic TRS.
[0222] [0222] The communications manager UE 915 can receive a configuration signal that identifies one or more resources for transmission of an aperiodic TRS. The communications manager UE 915 can also determine that a trigger event, associated with the UE, has occurred. The communications manager UE 915 can also receive the aperiodic TRS based, at least in part, on determination and according to one or more resources.
[0223] [0223] The 920 transmitter can transmit signals generated by other components of the device. In some examples, transmitter 920 may be located next to a 910 receiver on a transceiver module. For example, transmitter 920 can be an example of the aspects of transceiver 1235 described with reference to figure 12. Transmitter 920 can use a single antenna or a set of antennas.
[0224] [0224] Figure 10 illustrates a block diagram 1000 of a wireless device 1005 that supports aperiodic TRS according to aspects of the present description. Wireless device 1005 can be an example of aspects of a wireless device 905 or UE 115 as described with reference to figure 9. Wireless device 1005 can include receiver 1010, communications manager UE 1015 and transmitter 1020 The wireless device 1005 can also include a processor. Each of these components can be in communication with another (for example, through one or more buses).
[0225] [0225] Receiver 1010 can receive information, such as packets, user data, or control information associated with various information channels (e.g., control channels, data channels, and aperiodic TRS-related information, etc.). ). The information can be passed on to other components of the device. The receiver 1010 can be an example of the aspects of the transceiver 1235 described with reference to figure 12. The receiver 1010 can use a single antenna or a set of antennas.
[0226] [0226] The EU 1015 communications manager can be an example of the aspects of the EU 1215 communications manager described with reference to figure 12.
[0227] [0227] The EU 1015 communications manager can also include the trigger event manager
[0228] [0228] The trigger event manager 1025 can determine that a trigger event, associated with the UE, has occurred. The trigger event manager 1025 can receive, based, at least in part, on a trigger event occurrence associated with the UE, a trigger signal, which identifies the resources to be used to transmit an aperiodic TRS.
[0229] [0229] In some cases, the trigger event includes at least one of a SCell activation event, or a BWP switching event, or a beam shift event, or a connected mode batch reception event, or a discontinuous reception event inactive or a combination thereof.
[0230] [0230] The trigger signal manager 1030 can receive, based on the determination, a trigger signal that identifies the resources to be used for transmission of an aperiodic TRS and receive a configuration signal that identifies a transmission timing parameter for transmit an aperiodic TRS. The trigger signal manager 1030 can receive the aperiodic TRS based, at least in part, on the trigger signal and the identified resources. In some cases, the transmission timing parameter includes a relative timing parameter for transmitting the aperiodic TRS after the triggering event has occurred.
[0231] [0231] The aperiodic TRS manager 1035 can receive the aperiodic TRS, based on the trigger signal and the identified resources, and receive the aperiodic TRS, based on the determination and according to the transmission timing parameter. The aperiodic TRS manager 1035 can perform at least one of a tracking function, or a synchronization function, or an alignment function, or a combination of them, in response to the occurrence of the triggering event and based, at least on part, in the aperiodic TRS. In some cases, the aperiodic TRS includes a CSI-RS for tracking that is different, or otherwise separate, from an aperiodic CSI-RS.
[0232] [0232] The 1020 transmitter can transmit signals generated by other components of the device. In some examples, transmitter 1020 can be located next to a receiver 1010 in a transceiver module. For example, transmitter 1020 can be an example of the aspects of transceiver 1235 described with reference to figure 12. Transmitter 1020 can use a single antenna or a set of antennas.
[0233] [0233] Figure 11 illustrates a block diagram 1100 of an EU 1115 communications manager that supports aperiodic TRS, according to the aspects of the present description. The communications manager UE 1115 can be an example of the aspects of a communications manager UE 1215 described with reference to figures 9, 10 and 12. The communications manager UE 1115 can include the trigger event manager 1120, the signal manager Trigger 1125, Aperiodic TRS Manager 1130, DCI Trigger Manager 1135, CE MAC Manager 1140, I-DRX 1145 State Manager, and C-DRX 1150 State Manager. Each of these modules can communicate, directly or indirectly, with each other (for example, through one or more buses).
[0234] [0234] The trigger event manager 1120 can determine that a trigger event associated with the UE has occurred. The trigger event manager 1120 can receive, based, at least in part, on a trigger event occurrence associated with the UE, a trigger signal that identifies the resources to be used to transmit an aperiodic TRS. In some cases, the trigger event includes at least one of a SCell activation event, or a BWP switching event, or a beam shift event, or a connected mode batch reception event, or a reception event batch inactive or a combination thereof.
[0235] [0235] The trigger signal manager 1125 can receive, based on the determination, a trigger signal that identifies the resources to be used for transmission of an aperiodic TRS and receive a configuration signal that identifies a transmission timing parameter for the transmission of an aperiodic TRS. The trigger signal manager 1125 can receive the aperiodic TRS based, at least in part, on the trigger signal and the identified resources. In some cases, the transmission timing parameter includes a relative timing parameter for transmission of the aperiodic TRS after the triggering event has occurred.
[0236] [0236] The aperiodic TRS manager 1130 can receive the aperiodic TRS, based on the trigger signal and identified resources and receive the aperiodic TRS based on the determination and according to the transmission timing parameter. The aperiodic TRS manager 1130 can perform at least one of a tracking function, or a synchronization function, or an alignment function, or a combination of them, in response to the triggering event occurring and based, at least on part, in the aperiodic TRS. In some cases, the aperiodic TRS includes a CSI-RS for tracking, which is distinct from, or otherwise separate from, a conventional aperiodic TRS.
[0237] [0237] The DCI 1135 trigger manager can receive an SSB transmission before the trigger event occurs, the SSB transmission indicating at least a piece of information associated with the trigger event, receive an uplink DCI that identifies the resources to be used to transmit the aperiodic TRS, decode the uplink DCI to identify additional resources to be used to transmit a channel state information reference signal, receive a downlink DCI that identifies the resources to be used for transmission of the aperiodic TRS , decode bits of a second field to identify the indication that the aperiodic TRS has been triggered, the second field being different from the downlink grant field, receiving the DCI in the same partition as the partition in which the aperiodic TRS is received, receiving the DCI on a partition other than the partition on which the aperiodic TRS is received, and decoding the bits of a do lease field downlink DCI wnlink to identify a zero lease or invalid lease. In some cases, the trigger signal is received at a DCI. In some cases, the DCI includes an indication of a transmission timing parameter associated with the aperiodic TRS. In some cases, the trigger event includes at least one of a SCell activation event, or a BWP switching event, or a beam shift event, or a connected mode batch reception event, or a discontinuous inactive reception, or a combination thereof. In some cases, the trigger signal indicates at least one of a field indicating that the aperture TRS has been triggered or a field indicating the trigger event, where the indication of the trigger event includes the indication that the aperture TRS has been triggered. In some cases, the bits set in the second field indicate that the triggering event has occurred, and the indication of the triggering event further indicates that the aperiodic TRS has been triggered. In some cases, DCI includes at least one of a DCI fallback format or a DCI non-fallback format.
[0238] [0238] The CE MAC 1140 manager can determine that a SCell has been activated based on the CE MAC and determine that a beam shift event has occurred based on the CE MAC. In some cases, the trigger signal is received at a CE MAC. In some cases, the aperiodic TRS is received within a defined waiting period after the CE MAC. In some cases, the trigger event includes at least one of a SCell activation event, or a BWP switching event, or a beam shift event, or a connected mode batch reception event, or a reception event discontinuous inactive, or a combination thereof.
[0239] [0239] The state manager I-DRX 1145 can receive the aperiodic TRS during a radio localization occasion for the UE, while the UE is operating in a discontinuous reception state inactive, where the occurrence of the radio localization occasion includes the trigger event.
[0240] [0240] The state manager C-DRX 1150 can receive the aperiodic TRS before a connected duration of a connected discontinuous reception state, determine, based on the reception of the aperiodic TRS, that the data has been communicated to the UE, and transition to an active state from the discontinuous receiving state for data communication.
[0241] [0241] In the event that the trigger event comprises a SCell activation, one or more of the modules described above, or functions, can receive the trigger signal from an active cell of the UE and receive the aperiodic TRS from the cells secondary being activated in secondary cell activation, where the resources identified in the trigger signal comprise secondary cell resources used for transmission of the aperiodic TRS.
[0242] [0242] In the event that the triggering event comprises a BWP switching event, one or more of the modules or functions described above can receive the triggering signal through an active bandwidth portion of the UE and receive the aperiodic TRS via of a bandwidth portion being activated in the bandwidth portion switching event, where the activated bandwidth portion is different from the activated bandwidth portion and where the resources identified in the trigger signal comprise portion resources bandwidth settings used to transmit the aperiodic TRS through the activated bandwidth portion.
[0243] [0243] In the event that the trigger event comprises a beam change event, one or more of the modules described above, or functions, can receive the trigger signal via an active beam from the UE and receive the aperiodic TRS via a beam being activated in the beam change event, where the activated beam is different from the active beam and where the resources identified in the trigger signal comprise the activated beam resources used to transmit the aperiodic TRS through the activated beam.
[0244] [0244] Figure 12 illustrates a diagram of a system 1200 including a device 1205 that supports aperiodic TRS in accordance with aspects of the present description. Device 1025 can be an example of or include components of UE 115, as described above, for example, with reference to figure 1. Device 1205 can include components for bidirectional voice and data communications, including components for transmission and receiving communications, including the EU communications manager 1215, processor 1220, memory 1225, software 1230, transceiver 1235, antenna 1240 and I / O controller 1245. These components can be in electronic communication via one or more buses (for example, the 1210 bus). Device 1205 can communicate wirelessly with one or more base stations 105.
[0245] [0245] The 1220 processor may include an intelligent hardware device (for example, a general purpose processor, a DSP, a CPU, a microcontroller, an ASIC, an FPGA, a programmable logic device, a discrete port or logic component) transistor, a discrete hardware component, or any combination thereof). In some cases, the 1220 processor can be configured to operate a memory pool using a memory controller. In other cases, a memory controller can be integrated into the processor
[0246] [0246] Memory 1225 can include RAM and ROM. The 1225 memory can store computer-executable, computer-readable 1230 software including instructions that, when executed, cause the processor to perform the various functions described here. In some cases, memory 1225 may contain, among other things, a BIOS that can control basic hardware or software operation, such as interaction with peripheral components or devices.
[0247] [0247] Software 1230 may include code to implement aspects of this description, including code to support aperiodic TRS. The 1230 software can be stored on a non-transitory computer-readable medium, such as system memory or other memory. In some cases, the 1230 software may not be directly executable by the processor, but it can cause a computer (for example, when compiled and run) to perform the functions described here.
[0248] [0248] Transceiver 1235 can communicate in a bidirectional way, through one or more antennas, wired or wireless links, as described above. For example, transceiver 1235 can represent a wireless transceiver and can communicate bidirectionally with another wireless transceiver. The 1235 transceiver may also include a modem to modulate the packets and deliver the modulated packets to the antennas for transmission purposes, and to demodulate packets received from the antennas.
[0249] [0249] In some cases, the wireless device may include a single 1240 antenna. However, in some cases, the device may have more than one 1240 antenna, which may be capable of simultaneously transmitting or receiving multiple wireless transmissions.
[0250] [0250] The I / O 1245 controller can manage the input and output signals for the 1205 device. The I / O 1245 controller can also manage peripherals not integrated with the 1205 device. In some cases, the 1245 I / O controller can manage represent a physical connection or port to an external peripheral. In some cases, the I / O 1245 controller may use an operating system, such as iOS, ANDROID, MS-DOS, MS-WINDOWS, OS / 2, UNIX, LINUX, or another known operating system . In other cases, the I / O 1245 controller can represent or interact with a modem, keyboard, mouse, touch screen, or similar device. In some cases, the 1245 I / O controller can be implemented as part of a processor. In some cases, a user can interact with the 1205 device through the I / O 1245 controller or through the hardware components controlled by the I / O 1245 controller.
[0251] [0251] Figure 13 illustrates a flow chart illustrating a 1300 method for aperiodic TRS, according to the aspects of the present description. The method 1300 operations can be implemented by a base station 105 or its components, as described here. For example, method 1300 operations can be performed by a base station communications manager, as described with reference to figures 5 through 8. In some examples, a base station 105 can execute a set of codes to control the functional elements device to perform the functions described below. Additionally or alternatively, the base station 105 can perform aspects of the functions described below using special purpose hardware.
[0252] [0252] In 1305, base station 105 can determine that a trigger event, associated with a UE, has occurred. 1305 operations can be performed according to the methods described here. In certain examples, aspects of 1305 operations can be performed by a trigger event manager, as described with reference to figures 5 through 8.
[0253] [0253] In 1310, the base station 105 can transmit, based, at least in part, on the determination, a trigger signal that identifies the resources to be used for transmission of an aperiodic TRS. 1310 operations can be performed according to the methods described here. In certain examples, aspects of 1310 operations can be performed by a trigger signal manager, as described with reference to figures 5 through 8.
[0254] [0254] In 1315, base station 105 can transmit the aperiodic TRS based, at least in part, on the trigger signal and the identified resources. 1315 operations can be performed according to the methods described here. In certain examples, aspects of 1315 operations can be performed by an aperiodic TRS manager, as described with reference to figures 5 through 8.
[0255] [0255] Figure 14 illustrates a flow chart illustrating a 1400 method for aperiodic TRS according to the aspects of the present description. The method 1400 operations can be implemented by a UE 115 or its components, as described here. For example, method 1400 operations can be performed by an UE communications manager as described with reference to figures 9 to 12. In some examples, an UE 115 can execute a set of codes to control the functional elements of the device to perform the functions described below. Additionally or alternatively, the UE 115 can perform the function aspects described below using special purpose hardware.
[0256] [0256] In 1405, the UE 115 can receive, based, at least in part, on a trigger event associated with the UE, a trigger signal that identifies the resources to be used for transmission of an aperiodic TRS. 1405 operations can be performed according to the methods described here. In certain examples, the 1405 operations aspects can be performed by a trigger event manager, as described with reference to figures 9 to
[0257] [0257] In 1410, the UE 115 can receive the aperiodic TRS based, at least in part, on the trigger signal and the identified resources. Operations 1410 can be performed according to the methods described here. In certain examples, aspects of 1410 operations can be performed by a trigger signal manager, as described with reference to figures 9 to
[0258] [0258] In 1415, the UE 115 can perform at least one of a tracking function or a synchronization function, or an alignment function, or a combination of them, in response to the occurrence of the triggering event and based on, at least less in part, in the aperiodic TRS. The 1415 operations can be performed according to the methods described here. In certain examples, aspects of 1415 operations can be performed by an aperiodic TRS manager, as described with reference to figures 9 to 12.
[0259] [0259] Figure 15 illustrates a flow chart illustrating a 1500 method for aperiodic TRS, according to the aspects of the present description. Method 1500 operations can be implemented by a base station 105 or its components, as described here. For example, method 1500 operations can be performed by a base station communications manager, as described with reference to figures 5 through 8. In some examples, a base station 105 can execute a set of codes to control the functional elements device to perform the functions described below. In addition or alternatively, the base station 105 can perform aspects of the functions described below using special purpose hardware.
[0260] [0260] In 1505 the base station 105 can transmit a configuration signal to a UE, the configuration signal identifying a transmission timing parameter to transmit an aperiodic TRS. The 1505 operations can be performed according to the methods described here. In certain examples, aspects of the 1505 operations can be performed by a trigger signal manager, as described with reference to figures 5 through 8.
[0261] [0261] In 1510, base station 105 may determine that a trigger event, associated with the UE, has occurred. The 1510 operations can be performed according to the methods described here. In certain examples, aspects of 1510 operations can be performed by a trigger event manager, as described with reference to figures 5 through 8.
[0262] [0262] In 1515, base station 105 can transmit the aperiodic TRS to the UE based, at least in part, on the determination and according to the transmission timing parameter. The 1515 operations can be performed according to the methods described here. In certain examples, aspects of 1515 operations can be performed by an aperiodic TRS manager,
[0263] [0263] Figure 16 illustrates a flow chart illustrating a 1600 method for aperiodic TRS according to the aspects of the present description. The 1600 method operations can be implemented by a UE 115 or its components, as described here. For example, operations of method 1600 can be performed by an UE communications manager, as described with reference to figures 9 to 12. In some examples, an UE 115 can execute a set of codes to control the functional elements of the device to perform the functions described below. Additionally or alternatively, the UE 115 can perform aspects of the functions described below using special purpose hardware.
[0264] [0264] In 1605, the UE 115 can receive a configuration signal that identifies one or more resources for the transmission of an aperiodic TRS. 1605 operations can be performed according to the methods described here. In certain examples, aspects of 1604 operations can be performed by a trigger signal manager, as described with reference to figures 9 to
[0265] [0265] In 1610, the UE 115 can determine that a trigger event, associated with the UE, occurred. 1610 operations can be performed according to the methods described here. In certain examples, aspects of 1610 operations can be performed by a trigger event manager, as described with reference to figures 9 to 12.
[0266] [0266] In 1615, the UE 115 can receive the aperiodic TRS, based, at least in part, on determination and according to one or more resources. The 1615 operations can be performed according to the methods described here. In certain examples, aspects of 1615 operations can be performed by an aperiodic TRS manager, as described with reference to figures 9 to
[0267] [0267] It should be noted that the methods described above describe possible implementations, and that operations and steps may have a new disposition or may be otherwise modified and that other implementations are possible. In addition, aspects of two or more of the methods can be combined.
[0268] [0268] The techniques described here can be used for various wireless communications systems, such as code division multiple access (CDMA), time division multiple access (TDMA), frequency division multiple access (FDMA), orthogonal frequency division multiple access (OFDMA), single carrier frequency division multiple access (SC-FDMA), and other systems. The CDMA system can implement radio technology, such as CDMA2000, Access to Universal Terrestrial Radio (UTRA), etc. CDMA2000 covers the IS-2000, IS-95 and IS-856 standards. IS-2000 versions can be commonly referred to as CDMA2000 1X, 1X, etc. IS-856 (TIA-856) is commonly referred to as a CDMA2000 1xEV-DO, High Rate Packet Data (HRPD), etc. UTRA includes Broadband CDMA (WCDMA) and other variations of CDMA. A TDMA system can implement radio technology, such as the Global System for Mobile Communications (GSM).
[0269] [0269] An OFDMA system can implement radio technology, such as Ultra Mobile Broadband (UMB), Evolved UTRA, (E-UTRA), Institute of Electrical and Electronic Engineers (IEEE) 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802.20, Flash-OFDM, etc. UTRA and E-UTRA are part of the Universal Mobile Telecommunications System (UMTS). LTE, LTE-A and LTE-A Pro are versions of UMTS that use E-UTRA. UTRA, E-UTRA, UMTS, LTE, LTE-A, LTE-A Pro, NR and GSM are described in documents from the organization called the "3rd Generation Partner Project" (3GPP). CDMA2000 and UMB are described in documents from an organization called the "3rd Generation 2 Partnership Project" (3GPP2). The techniques described here can be used for radio systems and technologies mentioned above in addition to other radio systems and technologies. While aspects of an LTE, LTE-A, LTE-A Pro or NR system can be described for illustrative purposes, and the terminology LTE, LTE-A, LTE-A Pro or NR can be used in much of the description, the techniques described here they are applicable in addition to LTE, LTE-A, LTE-A Pro or NR applications.
[0270] [0270] A macro cell usually covers a relatively large geographical area (for example, several kilometers in radius) and can allow unrestricted access by UEs 115 with service subscriptions with the network provider. A small cell can be associated with a lower energy base station 105, compared to a macro cell, and a small cell can operate in the same or other frequency bands (for example, licensed, unlicensed, etc.) that macro cells. Small cells can include pico cells, femto cells, and micro cells, according to the various examples. A peak cell, for example, for covering a small geographical area and can allow unrestricted access by UEs 115 with service subscriptions with the network provider. A femto cell can also cover a small geographic area (for example, a residence) and can provide access restricted by UEs 115 having an association with femto cell (eg, UEs 115 in a closed subscriber group (CSG), UEs 115 for home users, and the like). An eNB for a macro cell can be referred to as an eNB macro. A small cell eNB can be referred to as a small cell eNB, an eNB peak, an eNB femto, or a domestic eNB. An eNB can support one or multiple (for example, two, three, four and the like) cells, and can also support communications using one or multiple component carriers.
[0271] [0271] The wireless communication system 100 or systems described here can support synchronized or asynchronous operation. For synchronized operation, base stations 105 can have similar frame timing, and transmissions from different base stations 105 can be aligned approximately in time. For asynchronous operation, base stations 105 may have different frame timings and transmissions from different base stations 105 may not be aligned in time. The techniques described here can be used for synchronized or asynchronous operations.
[0272] [0272] The information and signals described here can be represented using any one of a variety of different technologies and techniques. For example, data, instructions, commands, information, signals, bits, symbols and chips that can be referred to throughout the above description can be represented by voltages, currents, electromagnetic waves, particles or magnetic fields, particles or optical fields, or any combination thereof.
[0273] [0273] The various blocks and illustrative modules described in relation to the description presented here can be implemented or carried out with a general purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a set of field programmable port (FPGA), or other programmable logic device (PLD), discrete port or transistor logic, discrete hardware components, or any combination of them designed to perform the functions described here. A general purpose processor can be a microprocessor, but in the alternative, the processor can be any conventional processor, controller, microcontroller or state machine. A processor can also be implemented as a combination of computing devices (for example, a combination of a DSP and a microprocessor, multiple microprocessors, one or more microprocessors in conjunction with a DSP core or any other configuration).
[0274] [0274] The functions described here can be implemented in hardware, software executed by a processor, firmware or any combination thereof. If implemented in software run by a processor, the functions can be stored in or transmitted as one or more instructions or code in a computer-readable medium. Other examples and implementations are within the scope of the attached description and claims. For example, due to the nature of the software, functions described above can be implemented using software executed by a processor, hardware, firmware, wiring or combinations of any of them. The features that implement the functions can also be physically located in various positions, including distributed so that the parts of the functions are implemented in different physical locations.
[0275] [0275] The computer-readable medium includes both the non-transitory computer storage medium and the communication medium, including any medium that facilitates the transfer of a computer program from one place to another. A non-transitory storage medium can be any available medium that can be accessed by a general or special purpose computer. By way of example, rather than limitation, the non-transitory computer-readable medium may comprise random access memory (RAM), read-only memory (ROM), electrically programmable and erasable read-only memory (EEPROM), flash memory, compact disc (CD) ROM or other optical disk storage, magnetic disk storage or other magnetic storage devices, or any other non-transitory medium that is then used to port or store the desired program code media, in the form of instructions or data structures, and that can be accessed by a general or special purpose computer, or a general or special purpose processor. In addition, any connection is properly called a computer-readable medium. For example, if the software is transmitted from a network site, a server or other remote source using a coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL), or wireless technologies, such as infrared, radio and microwave, then coaxial cable, fiber optic cable, twisted pair, DSL or wireless technologies, such as infrared, radio and microwave are included in the definition of medium. Floppy and disk, as used here, include CD, laser disk, optical disk, digital versatile disk (DVD), floppy disk, and Blu-ray disk, where floppy disks normally reproduce data magnetically, while disks reproduce data optically with lasers. Combinations of the above can also be included in the scope of computer-readable medium.
[0276] [0276] As used herein, including in the claims, "or" as used in a list of items (for example, a list of items introduced by a phrase such as "at least one of" or "one or more of") indicates an inclusive list so that, for example, a list of at least one of A, B or C means A or B or C or AB or AC or BC or ABC (that is, A and B and C). In addition, as used here, the phrase "based on" should not be considered as a reference to a closed set of conditions. For example, an illustrative step that is described as "based on condition A" can be based on both a condition A and a condition B, without departing from the scope of the present description. In other words, as used here, the phrase "based on" should be considered in the same way as the phrase "based at least in part on".
[0277] [0277] In the attached figures, components or similar characteristics may have the same reference label. In addition, several components of the same type can be distinguished by following the reference label with a dash and a second label that distinguishes among similar components. If only the first reference label is used in the specification, the description applies to any of the similar components having the same first reference label independently of the second reference label, or another subsequent reference label.
[0278] [0278] The description presented here, with respect to the attached drawings, describes the illustrative configurations and does not represent all the examples that can be implemented or that are within the scope of the claims. The term "illustrative" used here means "serving as an example, case or illustration" and not "preferred" or "advantageous over other examples". The detailed description includes specific details for the purpose of providing an understanding of the techniques described. These techniques, however, can be practiced without these specific details. In some cases, well-known structures and devices are illustrated in the form of a block diagram in order to avoid obscuring the concepts of the examples described.
[0279] [0279] The description presented here is provided to allow those skilled in the art to create or make use of the description. Various modifications of the description will be readily apparent to those skilled in the art and the generic principles defined here can be applied to other variations without departing from the scope of the description.
Thus, the description is not limited to the examples and projects described here, but the broader scope consistent with the principles and novelty features described here must be agreed.

权利要求:
Claims (48)
[1]
1. A method for wireless communication on a user device (UE), comprising: receiving, based, at least in part, on a trigger event occurrence associated with the UE, a trigger signal that identifies the resources to be used to transmit an aperiodic tracking reference signal (TRS); receive the aperiodic TRS based, at least in part, on the trigger signal and the identified resources; perform at least one of a tracking function, or a synchronization function, or an alignment function, or a combination of them, in response to the occurrence of the triggering event and based, at least in part, on the aperiodic TRS.
[2]
A method according to claim 1, in which the aperiodic TRS comprises a channel status information reference signal (CSI-RS) for tracking, which is separate from an aperiodic CSI-RS.
[3]
3. Method, according to claim 1, in which the trigger signal is received in a downlink control indicator (DCI).
[4]
4. Method, according to claim 3, in which the trigger signal carries at least one of a field indicating that the aperiodic TRS has been triggered or a field indicating that the triggering event, in which the triggering event indication comprises the indication that the aperiodic TRS has been triggered.
[5]
5. Method according to claim 3, in which the trigger event comprises at least one of a secondary cell activation event, or a bandwidth switching event, or a beam change event, or a connected reception discontinuous event, or an inactive reception discontinuous event or a combination thereof.
[6]
A method according to claim 3, further comprising: receiving a synchronization signal block (SSB) transmission before the triggering event occurs.
[7]
7. Method, according to claim 3, further comprising: receiving an uplink grant DCI that identifies the resources to be used for transmission of the aperiodic TRS.
[8]
A method according to claim 7, further comprising: decoding the uplink grant DCI to identify the additional resources to be used for transmitting a channel status information reference signal.
[9]
9. Method, according to claim 3, further comprising: receiving a downlink grant DCI that identifies the resources to be used for transmission of the aperiodic TRS.
[10]
A method according to claim 9, further comprising: decoding a first bit portion of a downlink grant field from the downlink grant DCI to identify a zero grant or invalid grant; and decoding second part bits from a second field to identify the indication that the aperiodic TRS has been triggered, the second field being different from the first bit part of the downlink concession field.
[11]
11. Method, according to claim 10, in which the bits of the second field indicate that the triggering event has occurred, and the indication of the triggering event further indicates that the aperiodic TRS has been triggered.
[12]
12. Method according to claim 3, further comprising: receiving the DCI in the same partition in which the aperiodic TRS is received.
[13]
13. The method of claim 3, further comprising: receiving the DCI on a partition other than the partition on which the aperiodic TRS is received.
[14]
14. The method of claim 3, wherein the DCI comprises at least one of a DCI fallback format or a non-fallback DCI format.
[15]
15. Method according to claim 3, in which the DCI comprises an indication of a transmission timing parameter associated with the aperiodic TRS.
[16]
16. Method according to claim 1, in which the trigger signal is received in a control element (CE) of the medium access control (MAC).
[17]
17. The method of claim 16, further comprising:
determine that a secondary cell has been activated based, at least in part, on the MAC MAC.
[18]
18. Method according to claim 17, in which the aperiodic TRS is received within a defined waiting period after the CE MAC.
[19]
19. The method of claim 16, further comprising: determining that a beam shift event has occurred based, at least in part, on the MAC MAC.
[20]
20. Method according to claim 16, in which the triggering event comprises at least one secondary cell activation event, or a bandwidth part switching event, or a beam change event, or a discontinuous reception event in a connected mode, or a discontinuous reception event in an inactive mode, or a combination thereof.
[21]
21. The method of claim 1, wherein the triggering event comprises a secondary cell activation, further comprising: receiving the triggering signal from an active cell of the UE; and receiving the aperiodic TRS from the secondary cell being activated upon secondary cell activation, where the resources identified in the trigger signal comprise secondary cell resources used for transmission of the aperiodic TRS.
[22]
22. The method of claim 1, wherein the trigger event comprises a bandwidth switching event, further comprising:
receiving the trigger signal through an active bandwidth portion of the UE; and receive the aperiodic TRS through a bandwidth portion being activated in the bandwidth portion switching event, where the active bandwidth portion is different from the active bandwidth portion and where the resources identified in the signal Triggering means comprise activated bandwidth portion resources used to transmit the aperiodic TRS through the activated bandwidth portion.
[23]
23. The method of claim 1, wherein the trigger event comprises a beam change event, further comprising: receiving the trigger signal through an active beam of the UE; and receive the aperiodic TRS through a beam being activated in the beam change event, where the activated beam is different from the active beam and where the resources identified in the trigger signal comprise activated beam resources used for the transmission of the aperiodic TRS through the beam activated.
[24]
24. Method for wireless communication on user equipment (UE), comprising: receiving a configuration signal that identifies one or more resources to transmit an aperiodic tracking reference signal (TRS); determining that a trigger event associated with the UE has occurred; and receiving the aperiodic TRS based, at least in part, on determination and according to one or more resources.
[25]
25. The method of claim 24, further comprising: receiving the aperiodic TRS during a radio localization occasion to the UE while the UE is operating in a state of discontinuous reception inactive, where the occurrence of the radio localization occasion comprises the triggering event.
[26]
26. The method of claim 24, further comprising: receiving the aperiodic TRS prior to a connected duration of a connected mode discontinuous reception state; determine, based, at least in part, on receipt of the aperiodic TRS, that data should be communicated to the UE; and transition to an active state from the state of discontinuous reception for data communication.
[27]
27. The method of claim 24, wherein one or more resources comprise a transmission timing parameter, the transmission timing parameter comprising a relative timing parameter for transmission of the aperiodic TRS after the triggering event has occurred.
[28]
28. The method of claim 24, wherein the trigger event comprises at least one of a secondary cell activation event, or a bandwidth switching event, or a beam change event, or a connected reception discontinuous event, or an inactive reception discontinuous event, or a combination thereof.
[29]
29. Apparatus for wireless communication in a user equipment (UE), comprising: means for receiving, based, at least in part, on a trigger event occurrence associated with the UE, a trigger signal that identifies the resources to be used for transmitting an aperiodic tracking reference signal (TRS); means for receiving the aperiodic TRS based, at least in part, on the trigger signal and identified resources; and means for performing at least one tracking function, or a synchronization function, or an alignment function, or a combination thereof, in response to the occurrence of the triggering event and based, at least in part, on the aperiodic TRS.
[30]
Apparatus according to claim 29, in which the aperiodic TRS comprises a channel status information reference signal (CSI-RS) for tracking, which is separate from an aperiodic CSI-RS.
[31]
31. Apparatus according to claim 29, in which the trigger signal is received in a downlink control indicator (DCI).
[32]
32. Apparatus according to claim 31, in which the trigger signal carries at least one of a field indicating that the aperture TRS is triggered or a field indicating the trigger event, where the indication of the trigger event comprises the indication that the aperiodic TRS has been triggered.
[33]
33. Apparatus according to claim 31, in which the trigger event comprises at least one of a secondary cell activation event, or a bandwidth switching event, or beam change event, or a connected reception discontinuous event, or an inactive reception discontinuous event, or a combination thereof.
[34]
34. The apparatus of claim 31, further comprising: means for receiving a synchronous signal block (SSB) transmission before the triggering event occurs.
[35]
35. Apparatus according to claim 31, further comprising: means for receiving an uplink grant DCI that identifies the resources to be used for transmission of the aperiodic TRS.
[36]
36. The apparatus of claim 35, further comprising: means for decoding the uplink grant DCI to identify additional resources to be used for transmitting a channel status information reference signal.
[37]
37. Apparatus according to claim 31, further comprising: means for receiving a downlink concession DCI that identifies the resources to be used for transmission of the aperiodic TRS.
[38]
38. The apparatus of claim 37, further comprising: means for decoding a first bit portion of a downlink grant DCI downlink grant field to identify a zero grant or invalid grant; and means for decoding bits of the second part of a second field to identify the indication that the aperiodic TRS has been triggered, the second field being different from the first bit part of the downlink grant field.
[39]
39. Apparatus according to claim 38, in which the bits in the second field indicate that the triggering event has occurred, and the indication of the triggering event further indicates that the aperiodic TRS has been triggered.
[40]
40. Apparatus according to claim 31, further comprising: means for receiving the DCI in the same partition in which the aperiodic TRS is received.
[41]
41. Apparatus according to claim 31, further comprising: means for receiving the DCI in a partition other than the partition in which the aperiodic TRS is received.
[42]
42. Apparatus according to claim 31, wherein the DCI comprises at least one of a DCI fallback format or a non-fallback DCI format.
[43]
43. Apparatus according to claim 31, characterized by the fact that the DCI comprises an indication of a transmission timing parameter associated with the aperiodic TRS.
[44]
44. Apparatus according to claim 29, in which the trigger signal is received at a control element (CE) for medium access control (MAC).
[45]
45. Apparatus according to claim 44, further comprising:
means for determining that a secondary cell has been activated based at least in part on the MAC MAC.
[46]
46. Apparatus according to claim 45, in which the aperiodic TRS is received within a defined waiting period after the CE MAC.
[47]
47. Apparatus for wireless communication in user equipment (UE), comprising: means for receiving a configuration signal that identifies one or more resources for transmitting an aperiodic tracking reference signal (TRS); means for determining that a trigger event associated with the UE has occurred; and means for receiving the aperiodic TRS based, at least in part, on determination and according to one or more resources.
[48]
48. Apparatus according to claim 47, further comprising: means for receiving the aperiodic TRS during a radio localization occasion for the UE, while the UE is operating in a state of discontinuous reception inactive, where the occurrence of the occasion Location radio comprises the triggering event.

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同族专利:

---

公开号 | 公开日

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AU2018400800A1|2020-06-25|

---

WO2019139769A1|2019-07-18|

---

SG11202005056VA|2020-07-29|

---

CN111566974A|2020-08-21|

---

EP3738253A1|2020-11-18|

---

JP2021509794A|2021-04-01|

---

KR20200103700A|2020-09-02|

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TW201931888A|2019-08-01|

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US20190215117A1|2019-07-11|

引用文献:

---

公开号 | 申请日 | 公开日 | 申请人 | 专利标题

---

---

KR20190132804A|2018-05-21|2019-11-29|삼성전자주식회사|Method and apparatus for reference signal transmission and reception in wireless communication system|

---

US11202259B2|2018-11-02|2021-12-14|Apple Inc.|Apparatus, system, and method for mobile station power saving|

---

US20210044390A1|2019-08-09|2021-02-11|Qualcomm Incorporated|Event triggered reference signal transmission|

---

US20210092627A1|2019-09-19|2021-03-25|Qualcomm Incorporated|Channel state information reference signal multiplexing with synchronization signal blocks|

---

US20210136532A1|2019-11-01|2021-05-06|Qualcomm Incorporated|Trs for multicast and broadcast|

---

US20210218454A1|2020-01-10|2021-07-15|Qualcomm Incorporated|Reference signal resource indication|

---

WO2021160606A1|2020-02-14|2021-08-19|Telefonaktiebolaget Lm Ericsson |Methods for user equipment measurements on additional reference symbols during idle mode for power saving|

---

WO2021160647A1|2020-02-14|2021-08-19|Telefonaktiebolaget Lm Ericsson |ADDITIONAL REFERENCE SIGNALS FOR UEs IN NON-CONNECTED STATES|

---

WO2021161143A1|2020-02-14|2021-08-19|Nokia Technologies Oy|Supporting a narrow serving beam in a hierarchical beam configuration|

---

WO2021160604A1|2020-02-14|2021-08-19|Telefonaktiebolaget Lm Ericsson |Method and wireless communication device exploiting additional reference symbols in idle mode for power saving|

---

US20210258930A1|2020-02-18|2021-08-19|Qualcomm Incorporated|Paging procedure enhancement|

---

US20210288773A1|2020-03-10|2021-09-16|Samsung Electronics Co., Ltd.|Method and apparatus for csi-rs in rrc_idle/inactive state|

---

US20210321330A1|2020-04-09|2021-10-14|Qualcomm Incorporated|Tracking reference signalfor idle mode user equipment |

---

US20210360586A1|2020-05-12|2021-11-18|Qualcomm Incorporated|Techniques for trs/csi-rs multiplexing with paging/broadcast message in a wireless communication system|

---

WO2022027259A1|2020-08-04|2022-02-10|北京小米移动软件有限公司|Resource location determining method and apparatus, communication device, and medium|

法律状态:
2021-12-07| B350| Update of information on the portal [chapter 15.35 patent gazette]|

优先权:

---

申请号 | 申请日 | 专利标题

---

US201862615063P| true| 2018-01-09|2018-01-09|

---

US62/615,063|2018-01-09|

---

US16/225,941|US20190215117A1|2018-01-09|2018-12-19|Aperiod tracking reference signal|

---

US16/225,941|2018-12-19|

---

PCT/US2018/066930|WO2019139769A1|2018-01-09|2018-12-20|Aperiodic tracking reference signal|

---