rlm monitoring using signaled dynamic parameter

专利摘要:
in order to provide a more robust rlm procedure for 5g / nr, a base station can provide a dynamic relationship between a pdcch and another reference signal (for example, ss / csi-rs) for an eu. for example, a device can receive an adjustment parameter related to a pdcch from a base station. the tuning parameter can comprise a relationship between pdcch and at least one among ss or csi-rs for deriving a radio link quality from a hypothetical pdcch. the device can receive an ss / csi-rs which is qcl with the pdcch and perform a radio link measurement based on at least one received from the ss or csi-rs using the adjustment parameter related to the pdcch. among other ratios / deviations, the adjustment parameter can indicate a difference in tpr, a difference in beam formation gain, a difference in beam width, a difference in beam orientation.
公开号:BR112019019032A2
申请号:R112019019032
申请日:2018-02-14
公开日:2020-04-22
发明作者:Lee Heechoon；Pravin John Wilson Makesh；Akkarakaran Sony；Nagaraja Sumeeth；Luo Tao；Feng Wang Xiao；Zhang Xiaoxia
申请人:Qualcomm Inc；
IPC主号:

专利说明:

RLM MONITORING WITH THE USE OF SIGNALED DYNAMIC PARAMETER
CROSS REFERENCE TO RELATED APPLICATION [0001] This application claims the benefit of provisional application serial number US 62 / 473,238, entitled RLM MONITORING USING SIGNALED DYNAMIC PARAMETER and filed on March 17, 2017, and patent application No. 15 / 895,839, entitled RLM MONITORING USING SIGNALED DYNAMIC PARAMETER and filed on February 13, 2018, which are expressly incorporated in this document as a reference, in its entirety.
FUNDAMENTALS
Field [0002] The present disclosure refers, in general, to communication systems and, more particularly, to radio link monitoring.
Background [0003] Wireless communication systems are widely installed to provide various telecommunication services such as telephony, video, data, messages and broadcasts. Typical wireless communication systems can employ multiple access technologies capable of supporting communication with multiple users by sharing available system resources. Examples of such multiple access technologies include code division multiple access systems (CDMA), time division multiple access systems (TDMA), frequency division multiple access systems (FDMA), multiple access systems by orthogonal frequency division (OFDMA), multiple access systems
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2/55 per single carrier frequency division (SC-FDMA) and multiple access systems by time division synchronized code division (TD-SCDMA).
[0004] These multiple access technologies have been adopted in several telecommunication standards to provide a common protocol that allows different wireless devices to communicate at a municipal, national, regional and even global level. An exemplary telecommunication standard is the New Radio 5G (NR). 5G NR is part of a continuous mobile broadband evolution promulgated by the Third Generation Partnership Project (3GPP) to meet new requirements associated with latency, reliability, security, scalability (for example, with Internet of Things (IoT)), and other requirements. Some aspects of 5G NR may be based on the 4G Long Term Evolution (LTE) pattern. There is a need for further improvements in the 5G NR technology. These enhancements may also apply to other multiple access technologies and to the telecommunication standards that employ these technologies.
[0005] Radio link monitoring (RLM) can be an important procedure for tracking radio link conditions in 5G / NR. The RLM procedure can indicate whether the air link is in sync or out of sync, for example, out of sync which indicates that the radio link condition is unsatisfactory and in sync which indicates that the radio link condition is acceptable and the UE is prone to receive a PDCCH transmitted on the radio link. There is a need for a more comprehensive RLE procedure
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3/55 robust for 5G / NR.
SUMMARY [0006] The following is a simplified summary of one or more aspects in order to provide a basic understanding of those aspects. This brief description is not an extensive overview of all aspects covered, and is not intended to identify key or critical elements of all aspects or to delimit the scope of any or all aspects. Its sole purpose is to present some concepts of one or more aspects in a simplified way as a prelude to the more detailed description, which is presented later.
[0007] There is a need for a more robust RLM procedure for 5G / NR. For example, in 5G / NR, an RLM procedure can be performed to infer a radio link quality for a hypothetical PDCCH based on measurements for a different quasi-co-located reference signal (QCL) using parameters static. For example, in 5G / NR, a PDCCH can be transmitted in a beam using a port (or ports) that is quasi-co-located (QCL) with a set of reference signal ports, for example, a set signaled sync signal (SS) ports or a set of channel state information reference signal ports (CSI-RS). In this way, the UE can use measurements for the SS / CSI-RS to infer a signal quality for a channel over which the PDCCH is transmitted by observing the channel over which the SS / CSI-RS port set is transmitted. The UE may be able to infer
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4/55 channel parameters (such as delay spread, Doppler, etc.) on which the PDCCH is transmitted, by observing the channel on which the set of SS ports is transmitted. The UE could also be able to infer spatial parameters of the PDCCH beam from the SS beam. The beam of PDCCH could be very similar to the beam of SS / CSI-RS, sometimes, there can be differences from the beam of SS / CSI-RS. Thus, sometimes the inferred radio link quality may not be accurate for the PDCCH. For example, although a base station may be able to increase the power of the PDCCH, the UE can declare a radio link failure (RLE) based on an out-of-sync determination using static parameters and measurements from the other reference signal.
[0008] A more robust solution can be provided with dynamic network signal parameters for the UE to assist the UE in making a more accurate in-sync and out-of-sync determination in connection with RLM for 5G / NR. For example, the base station can signal any one of a series of adjustment parameters to the UE related to a deviation or difference in parameters between the reference signal and the PDCCH. The adjustment parameter can comprise a dynamic adjustment parameter. Among others, the examples of such adjustment parameters can correspond to any one of a traffic-to-pilot ratio (TPR) of a hypothetical PDCCH in relation to a TPR of the reference signal, beam relationships between the reference signal used for a determination of radio link quality and a PDCCH beam, beam formation gain differences from a PDCCH
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Hypothetical 5/55, beam width differences of a hypothetical PDCCH and of the reference signal, beam orientation differences of a hypothetical PDCCH and of the reference signal, etc. The setting parameter for the hypothetical PDCCH can be indicated in relation to a reference signal that the UE uses to perform RLM in order to derive a radio link quality for the hypothetical PDCCH. The UE can then use this information related to the dynamic parameters to derive a more accurate quality determination for the link that leads to better RLM performance.
[0009] In one aspect of the disclosure, a method, a computer-readable medium and an apparatus are provided. The device receives an adjustment parameter related to a PDCCH from a base station. The adjustment parameter comprises a relationship between the PDCCH beam and at least one of the SS beam or the CSI-RS for the derivation of a radio link quality. The device receives an SS / CSI-RS over SS / CSI-RS ports that are QCL with the ports that transmit the PDCCH and performs a radio link measurement based on at least one received from the SS or CSI-RS using the adjustment parameter related to the PDCCH. Among other relationships, the adjustment parameter can indicate a difference in TPR, a difference in beam formation gain, a difference in beam width, a difference in beam orientation. When a derived radio link quality for the PDCCH is below a desired level, the device can perform at least one of a PDCCH beam recovery procedure and a radio link failure procedure.
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6/55 [0010] In another aspect of the disclosure, a method, a computer-readable medium and an apparatus are provided. The device transmits an adjustment parameter to a PDCCH-related UE from the base station. The apparatus transmits to the UE at least one of an SS and a CSI-RS transmitted over SS / CSI-RS ports which are QCL with the port which transmits the PDCCH. The adjustment parameter comprises a relationship between the PDCCH and at least one of the SS or CSI-RS for the derivation of a radio link quality in the UE.
[0011] For the accomplishment of the previous and related purposes, the one or more aspects comprise the resources now fully described and particularly pointed out in the claims. The following description and the accompanying drawings present in detail certain illustrative features of the one or more aspects. However, these characteristics are indicative of just a few of the many ways in which the principles of different aspects can be employed, and this description is intended to include all such aspects and their equivalents.
BRIEF DESCRIPTION OF THE DRAWINGS [0012] Figure 1 is a diagram that illustrates an example of a wireless communications system and an access network.
[0013] Figures 2A, 2B, 2C and 2D are diagrams that illustrate examples of a DL frame structure, DL channels within the DL frame structure, a UL frame structure and UL channels within the frame structure UL board, respectively.
[0014] Figure 3 is a diagram that illustrates a
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example of a base station and equipment of user (EU) in a network access. [0015 ] The figure 4 it's a diagram what illustrates a base station and in communication with an UE. [0016 ] The figure 5 it's a diagram what illustrates
an exemplary slot structure comprising DL center slots and UL center slots.
[0017] Figure 6 is a diagram illustrating an exemplary signal flow between a base station and a UE.
[0018] Figure 7 is a diagram illustrating an exemplary signal flow between a base station and a UE.
[0019 ] The figure 8 is one flowchart one method in Communication wireless. [0020 ] The figure 9 and one flowchart one method in Communication wireless. [0021 ] The figure 10 is a flow chart in Dice conceptual that illustrates the flow in data between different
media / components in an example device.
[0022] Figure 11 is a diagram that illustrates an example of a hardware deployment for a device that employs a processing system.
[0023] Figure 12 is a flow chart of a wireless communication method.
[0024] Figure 13 is a conceptual data flowchart that illustrates the data flow between different media / components in an example device.
[0025] Figure 14 is a diagram that illustrates an example of a hardware deployment for a device
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8/55 that employs a processing system.
DETAILED DESCRIPTION [0026] The detailed description presented below in connection with the accompanying drawings is intended as a description of various configurations, and is not intended to represent the only configurations in which the concepts described in this document can be practiced. The detailed description includes specific details for the purpose of providing a complete understanding of various concepts. However, it will be evident to those skilled in the art that these concepts can be practiced without these specific details. In some cases, well-known structures and components are shown in the form of a block diagram in order to avoid the lack of clarity of such concepts.
[0027] Various aspects of telecommunication systems will now be presented with reference to various devices and methods. These devices and methods will be described in the following detailed description and illustrated in the accompanying drawings by means of various blocks, components, circuits, processes, algorithms, etc. (collectively referred to as elements). These elements can be implemented using electronic hardware, computer software or any combination of them. Whether these elements can be deployed as hardware or as software depends on the particular application and the design restrictions imposed on the general system.
[0028] For example, a element or any portion of an element or any combination in elements can be deployed as a system in
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9/55 processing that includes one or more processors. Examples of processors include microprocessors, microcontrollers, graphics processing units (GPUs), central processing units (CPUs), application processors, digital signal processors (DSPs), reduced instruction set computing (RISC) processors, systems on a chip (SoC), baseband processors, field programmable port arrangements (FPGAs), programmable logic devices (PLDs), state machines, switching logic, discrete hardware circuits and other suitable hardware configured to perform the several features described throughout this disclosure. One or more processors in the processing system can run the software. The software must be interpreted broadly to mean instructions, instruction sets, code, code segments, program code, programs, subprograms, software components, applications, software applications, software packages, routines, subroutines, objects, executables, threads of execution, procedures, functions, etc., regardless of whether they are called software, firmware, middleware, microcode, hardware description language or otherwise.
[0029] Consequently, in one or more exemplifying modalities, the functions described can be implemented in hardware, software or any combination thereof. If implemented in software, the functions can be stored in, or encoded as, one or more instructions or code in a computer-readable medium. Computer-readable media includes
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10/55 computer storage media. Storage media can be any available media that can be accessed by a computer. As an example, and not a limitation, such computer-readable media may comprise a random access memory (RAM), a read-only memory (ROM), an electrically erasable programmable ROM (EEPROM), optical disk storage, magnetic disk storage, other magnetic storage devices, combinations of the aforementioned types of computer-readable media, or any other media that can be used to store computer-executable code in the form of data structures or instructions that can be accessed by a computer .
[0030] Figure 1 is a diagram illustrating an example of a wireless communications system and an access network 100. The wireless communications system (also called a wireless wide area network (WW AN)) includes base stations 102, UEs 104 and an evolved packet core (EPC) 160. Base stations 102 can include macrocells (high power cell base station) and / or small cells (low power cell base station). The macrocells include base stations. At
small cells include femtocells, picocells and microcells. [0031] At base stations 102 (collectively denominated as network access radio terrestrial (E-
UTRAN) of universal mobile telecommunication system (UMTS)) interface with EPC 160 through backhaul links 132 (for example, SI interface). In addition to
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11/55 other functions, base stations 102 can perform one or more of the following functions: user data transfer, radio channel encryption and decryption, integrity protection, header compression, mobility control functions (for example, example, automatic switching, dual connectivity), inter-cell interference coordination, connection release and configuration, load balancing, distribution to stratum messages without access (NAS), NAS node selection, synchronization, radio access network sharing (RAN), multimedia diffusion multipoint service (MBMS), equipment and subscriber tracking, RAN information management (RIM), paging, positioning and delivery of warning messages. Base stations 102 can communicate directly or indirectly (for example, via EPC 160) with each other on backhaul links 134 (for example, interface X2). The backhaul links 134 can be wired or wireless.
[0032] Base stations 102 can communicate wirelessly with UEs 104. Each of base stations 102 can provide communication coverage for a respective geographic coverage area 110. There may be geographic coverage areas 110. For example, small cell 102 'may have a coverage area 110' that overlaps coverage area 110 of one or more base stations 102. A network that includes both small cells and macrocells may be known as a heterogeneous network. A heterogeneous network can also include domestic evolved B nodes (eNBs) (HeNBs), which can provide service to a restricted group known as a group of
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12/55 closed subscriber (CSG). Communication links 120 between base stations 102 and UEs 104 may include uplink (UL) transmissions (also referred to as a reverse link) from UE 104 to base station 102 and / or link transmissions downward (DL) (also known as direct link) from a base station 102 to a UE 104. Communication links 120 can use multiple input and multiple output antenna (MIMO) technology, including spatial multiplexing, formation beam and / or transmission diversity. The communication links can be through one or more carriers. Base stations 102 / UEs 104 can use the spectrum up to the Y MHz bandwidth (for example, 5, 10, 15, 20, 100 MHz) per carrier allocated in a carrier aggregation of up to a total of Yx MHz (x component carriers) used for transmission in each direction. The carriers may or may not be adjacent to each other. The allocation of carriers can be asymmetric in relation to DL and UL (for example, more or less carriers can be allocated to DL in relation to UL). Component carriers may include a primary component carrier and one or more secondary component carriers. A primary component carrier can be termed as a primary cell (PCell) and a secondary component carrier can be termed as a secondary cell (SCell).
[0033] The wireless communication system may also include a Wi-Fi access point (AP) 150 in communication with Wi-Fi stations (STAs) 152 through communication links 154 in a frequency spectrum
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not licensed from 5 GHz. Through the Communication in one frequency spectrum not licensed, the STAs 152 / AP 150 can perform an avail free channel action (CCA) before gives communication, end of to determine if the channel it is available. [0034] The cell small 102 ' 'can operate in one
licensed and / or unlicensed frequency spectrum. By operating on an unlicensed frequency spectrum, small cell 102 'can employ 5G / NR and use the same unlicensed 5 GHz frequency spectrum as that used by Wi-Fi AP 150. Small cell 102', which employs 5G / NR on an unlicensed frequency spectrum, can intensify coverage and / or increase the capacity of the access network.
[0035] gNodeB (gNB) 180 can operate at millimeter wave frequencies (mmW) and / or frequencies of almost mmW in communication with UE 104. When gNB 180 operates at frequencies of mmW or almost mmW, gNB 180 can be called an mmW base station. The extremely high frequency (EHF) is part of the RE in the electromagnetic spectrum. The EHF has a range of 30 GHz to 300 GHz and a wavelength between 1 millimeter and 10 millimeters. The radio waves in the band can be called a millimeter wave. Almost mmW can extend to a frequency of 3 GHz with a wavelength of 100 mm. The superhigh frequency band (SHF) extends between 3 GHz and 30 GHz, also called centimeter wave. Communications using the mmW / almost mmW radio frequency band have extremely high trajectory loss and a short range. The mmW base station
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180 can use beamform 184 with UE 104 to compensate for extremely high path loss and short range.
[0036] EPC 160 may include a Mobility Management Entity (MME) 162, other MMEs 164, a Service Communication Port 166, a Multimedia Broadcast Multipoint Service Communication Port (MBMS) 168, a Center Broadcast Multipoint Service (BM-SC) 170 and a Packet Data Network (PDN) Communication Port 172. MME 162 may be in communication with a Domestic Subscriber Server (HSS) 174. MME 162 is the control node that processes signaling between UEs 104 and EPC 160. In general, MME 162 provides connection and carrier management. All user Internet Protocol (IP) packets are transferred through Service Communication Port 166, which itself is connected to PDN Communication Port 172. PDN Communication Port 172 provides address allocation from UE IP, as well as other functions. PDN Communication Port 172 and BM-SC 170 are connected to IP Services 176. IP Services 176 may include the Internet, an intranet, an IP Multimedia Subsystem (IMS), a Streaming Service. PS (PSS) and / or other IP services. The BM-SC 170 can provide functions for the provision and delivery of MBMS user service. The BM-SC 170 can serve as an entry point for content provider MBMS transmission, can be used to authorize and initiate MBMS Carrier Services within a public land mobile network (PLMN) and can be used to schedule transmissions of MBMS. The Port
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MBMS 168 communication can be used to distribute MBMS traffic to base stations 102 that belong to a Multipoint Broadcast Single Frequency Network (MBSFN) area that broadcasts a particular service and may be responsible for session management (start / interruption) and collection of loading information related to eMBMS.
[0037] The base station can also be termed as a gNB, Node B, evolved Node B (eNB), an access point, a transceiver base station, a radio base station, a radio transceiver, a radio function transceiver, a set of basic services (BSS), a set of extended services (ESS) or some other suitable terminology. Base station 102 provides an access point for EPC 160 for an UE 104. Examples of UEs 104 include a cell phone, a smart phone, a session initiation protocol (SIR) phone, a laptop computer , a personal digital assistant (PDA), a satellite radio, a global positioning system, a multimedia device, a video device, a digital audio player (for example, MP3 player), a camera, a video console games, a tablet computer, a smart device, a device that can be worn close to the body, a vehicle, an electric meter, a gas pump, a toaster or any other similarly functioning device. Some of the UEs 104 can be termed as loT devices (for example, parking meter, gas pump, toaster, vehicles, etc.). UE 104 can also be referred to as a station, a mobile station, a station
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16/55 subscriber, a mobile unit, a subscriber unit, a wireless unit, a remote unit, a mobile device, a wireless device, a wireless communications device, a remote device, a mobile subscriber station, an access terminal, a mobile terminal, a wireless terminal, a remote terminal, a handset, a user agent, a mobile client, a customer or some other suitable terminology.
[0038] Again with reference to Figure 1, in certain aspects, the UE 104 can be configured with a radio link quality component 198, for example, which can correspond to the radio link quality component 1014 in the device 1014. The radio link quality component 198 can be configured to derive air link quality for a hypothetical PDCCH from a base station using a dynamic parameter signaled to the UE and based on measurements from an SS / CSI-RS received over SS / CSI-RS ports that are QCL with the port that transmits the PDCCH. The dynamic parameter can comprise a relationship between the PDCCH and at least one among the SS or CSI-RS for the derivation of a radio link quality from the PDCCH using the SS / CSI-RS. Among other relationships, the dynamic parameter can indicate a difference in TPR, a difference in beam formation gain, a difference in beam width, a difference in beam orientation. Similarly, base station 180, 102 may include an adjustment parameter component 199 configured to indicate an adjustment parameter related to a deviation / difference between a PDCCH and an SS / CSI-RS for the UE for use in the derivation
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17/55 of an RLM for the PDCCH based on measurements from the SS / CSI-RS, for example, as described in connection with Figures 6 to 8 and 12 to 14.
[0039] Figure 2A is a diagram 200 that illustrates an example of a DL frame structure. Figure 2B is a diagram 230 that illustrates an example of channels within the DL frame structure. Figure 2C is a diagram 250 that illustrates an example of a UL frame structure. Figure 2D is a diagram 280 that illustrates an example of channels within the UL frame structure. Other wireless communication technologies may have a different frame structure and / or different channels. For example, aspects of the frame structure can be employed for a 5G / NR frame structure. The 5G / NR frame structure can be FDD in which, for a particular set of subcarriers (carrier system bandwidth), the subframes within the set of subcarriers are dedicated to DL or UL, or it can be TDD in which , for a particular set of subcarriers (carrier system bandwidth), the subframes within the set of subcarriers are dedicated to both DL and UL. In the examples provided by Figures 2A, 2C, the frame structure of 5G / NR is assumed to be TDD, with subframe 4 a subframe of DL and subframe 7 a subframe of UL. Although subframe 4 is illustrated as providing only DL and subframe 7 is illustrated as providing only UL, any particular subframe can be divided into different subsets that provide both UL and DL. Note that the description below also applies to a 5G / NR frame structure that is FDD.
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18/55 [0040] A frame (10 ms) can be divided into 10 equally sized subframes. Each subframe can include two consecutive time slots. A resource grid can be used to represent the two time slots, where each time slot includes one or more concurrent resource blocks (RBs) (also referred to as physical RBs (PRBs)). The resource grid is divided into multiple resource elements (REs). For a normal cyclic prefix, an RB contains 12 consecutive subcarriers in the frequency domain and 7 consecutive symbols (for DL, OFDM symbols; for UL, SC-FDMA symbols) in the time domain, for a total of 84 REs. For an extended cyclic prefix, a RB contains 12 consecutive subcarriers in the frequency domain and 6 consecutive symbols in the time domain, for a total of 72 REs. The number of bits carried by each RE depends on the modulation scheme.
[0041] As illustrated in Figure 2A, some of the REs carry DL (pilot) reference signals (DL-RS) for channel estimation in the UE. DL-RS can include cell-specific reference signals (CRS) (also sometimes referred to as RS), UE-specific reference signals (UE-RS) and state channel information reference signals (CSI-RS) . Figure 2A illustrates CRS for antenna ports 0, 1, 2 and 3 (indicated as Rq, Ri, R2 θ Rs, respectively), UE-RS for antenna port 5 (indicated as R ₅ ), and CSI-RS for antenna port 15 (indicated as R). Figure 2B illustrates an example of several channels within a DL subframe of a frame. The physical control format indicator channel (PCFICH)
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19/55 is inside the 0 symbol of slot 0, and carries a control format indicator (CFI) that indicates whether the physical downlink control channel (PDCCH) occupies 1, 2 or 3 symbols (Figure 2B illustrates a PDCCH occupying 3 symbols). The PDCCH carries downlink control information (DCI) within one or more control channel elements (CCEs), where each CCE includes nine groups of REs (REGs), where each REG includes four consecutive REs in a symbol of OFDM. A UE can be configured with an enhanced UE-specific PDCCH (ePDCCH) that also port DCI. The ePDCCH can have 2, 4, or 8 pairs of RB (Figure 2B shows two pairs of RB, each subset of which includes a pair of RB). The physical hybrid automatic (ARQ) repeat request indicator (PHICH) channel (HARQ) is also inside the 0 symbol in slot 0 and carries the HARQ (HI) indicator that indicates HARQ (ACK) / ACK recognition feedback. negative (NACK) based on the shared physical uplink channel (PUSCH). The primary synchronization channel (PSCH) can be within the symbol 6 of slot 0 within subframes 0 and 5 of a frame. The PSCH carries a primary synchronization signal (PSS) that is used by a UE to determine the subframe / symbol timing and a physical layer identity. The secondary synchronization channel (SSCH) can be within the symbol 5 of slot 0 within subframes 0 and 5 of a frame. The SSCH carries a secondary synchronization signal (SSS) which is used by a UE to determine a physical layer cell identity group and radio frame timing. Based on the physical layer identity and the physical layer cell identity group number, the UE can
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20/55 determine a physical cell identifier (PCI). Based on the PCI, the UE can determine the locations of the aforementioned DL-RS. The physical broadcast channel (PBCH), which carries a main information block (MIB), can be logically grouped with the PSCH and SSCH to form a synchronization signal block (SS). The MIB provides numerous RBs in the DL system bandwidth, a PHICH configuration, and a system frame number (SEN). The downlink shared physical channel (PDSCH) carries user data, broadcast system information not transmitted through the PBCH such as system information blocks (SIBs) and paging messages.
[0042] As illustrated in Figure 2C, some of the REs carry demodulation reference signals (DM-RS) for channel estimation at the base station. The UE can additionally transmit probe reference signals (SRS) at the last symbol of a subframe. The SRS can have a honeycomb structure and a UE can transmit SRS in one of the honeycombs. The SRS can be used by a base station for channel quality estimation to enable frequency-dependent programming at UL. Figure 2D illustrates an example of several channels within a frame's UL subframe. A physical random access channel (PRACH) can be within one or more subframes within a frame based on the PRACH configuration. PRACH can include six consecutive RB pairs within a subframe. PRACH allows the UE to perform initial system access and obtain UL synchronization. A physical uplink control channel (PUCCH) can be located at the edges of the
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UL. 0 PUCCH carries uplink control (UCI) information, such as programming requests, a channel quality indicator (CQI), a pre-coding matrix indicator (PMI), a classification indicator (RI) and feedback from HARQ ACK / NACK. 0 PUSCH data carrier and can be additionally used to carry a storage progress report
temporary (BSR) , one report in capacity in energy (PHR) and / or UCI. [0043] THE Figure 3 is one diagram of blocks in a base station 310 in communication with an UE 350 in an access network, Jo DL, the packages in IP from of EPC 160
can be provided for a 375 controller / processor. The 375 controller / processor deploys layer 3 and layer 2 functionality. Layer 3 includes a radio resource control (RRC) layer and layer 2 includes a radio protocol layer packet data convergence (PDCP), a radio link control layer (RLC) and a media access control layer (MAC). The 375 controller / processor provides RRC layer functionality associated with the diffusion of system information (for example, MIB, SIBs), RRC connection control (for example, RRC connection paging, RRC connection establishment, modification of RRC connection and RRC connection release), mobility of inter-radio access technology (RAT), and measurement configuration for UE measurement report; PDCP layer functionality associated with header compression / decompression, security (encryption, decryption, integrity protection, integrity verification), and support functions for
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22/55 automatic change; RLC layer functionality associated with the transfer of upper layer packet data units (PDUs), error correction through ARQ, concatenation, segmentation and reassembly of RLC service data units (SDUs), PDU re-segmentation of RLC data, and reordering of RLC data PDUs; and MAC layer functionality associated with mapping between logical channels and transport channels, multiplexing of MAC SDUs in transport blocks (TBs), demultiplexing of MAC SDUs from TBs, programming information reporting, error correction through HARQ, priority handling and logical channel prioritization.
[0044] The transmission processor (TX) 316 and the receiving processor (RX) 370 implement layer 1 functionality associated with various signal processing functions. Layer 1, which includes a physical layer (PHY), can include error detection on transport channels, encoding / decoding forward error correction (FEC) of transport channels, interleaving, rate matching, mapping on physical channels , modulation / demodulation of physical channels and MIMO antenna processing. The TX 316 processor handles mapping for signal constellations based on various modulation schemes (for example, binary phase shift switching (BPSK), quadrature phase shift switching (QPSK), M phase shift switching ( M-PSK), modulated amplitude modulation M (M-QAM)). The coded and modulated symbols can then be divided into parallel streams. Each stream can then be
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23/55 mapped to an OFDM subcarrier, multiplexed with a reference signal (for example, pilot) in the time and / or frequency domain, and then combined together with the use of a Fast Inverse Fourier Transform (IFFT) to produce a physical channel that carries a time domain OFDM symbol stream. The OFDM stream is spatially pre-coded to produce multiple spatial streams. Channel estimates from a channel estimator 374 can be used to determine the modulation and coding scheme, as well as for spatial processing. The channel estimate can be derived from a reference feedback signal and / or channel condition transmitted by the UE 350. Each spatial stream can then be supplied to a different antenna 320 via a separate 318TX transmitter. Each 318TX transmitter can modulate an ER carrier with a respective spatial flow for transmission.
[0045] In UE 350, each 354RX receiver receives a signal through its respective antenna 352. Each 354RX receiver retrieves modulated information on an RE carrier and provides the information to the receiving (RX) 356 processor. The TX 368 processor and the RX 356 processor deploy layer 1 functionality associated with various signal processing functions. The RX 356 processor can perform spatial processing on the information to retrieve any spatial streams destined for the UE 350. If multiple spatial streams are destined for the UE 350, they can be combined by the RX 356 processor into a single OFDM symbol stream. The RX 356 processor then converts the OFDM symbol stream
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24/55 from the time domain to the frequency domain using a fast Fourier transform (FFT). The frequency domain signal comprises a separate OFDM symbol stream for each sub-carrier of the OFDM signal. The symbols on each subcarrier and the reference signal are retrieved and demodulated by determining the most likely signal constellation points transmitted by base station 310. These smooth decisions can be based on channel estimates computed by channel estimator 358. The smooth decisions are then decoded and deinterleaved to retrieve the data and control signals that were originally transmitted by base station 310 on the physical channel. The data and control signals are then provided to the 359 controller / processor, which deploys layer 3 and layer 2 functionality.
[0046] The controller / processor 359 can be associated with a 360 memory that stores data and program codes. 360 memory can be called a computer-readable medium. At UL, the 359 controller / processor provides demultiplexing between logical and transport channels, packet reassembly, decryption, header decompression, and control signal processing to retrieve IP packets from EPC 160. The 359 controller / processor is also responsible by detecting error using an ACK and / or NACK protocol to support HARQ operations.
[0047] Similar to the functionality described in connection with DL transmission by base station 310, controller / processor 359 provides the RRC layer functionality associated with the acquisition of information from the
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25/55 system (for example, MIB, SIBs), RRC connections and measurement report; the PDCP layer functionality associated with header compression / decompression and security (encryption, decryption, integrity protection, integrity verification); RLC layer functionality associated with the transfer of top layer PDUs, error correction through ARQ, concatenation, segmentation and reassembly of RLC SDUs, re-segmentation of RLC data PDUs and reorder of RLC data PDUs; and MAC layer functionality associated with mapping between logical channels and transport channels, multiplexing of MAC SDUs into TBs, demultiplexing of MAC SDUs from TBs, programming information reporting, error correction through HARQ, manipulation priority and logical channel prioritization.
[0048] Channel estimates derived by a 358 channel estimator from a reference or feedback signal transmitted by base station 310 can be used by the TX 368 processor to select the appropriate modulation and coding schemes and to facilitate processing space. The spatial streams generated by the TX 368 processor can be provided to the different antenna 352 via separate transmitters 354TX. Each 354TX transmitter can modulate an RF carrier with a corresponding spatial flow for transmission.
[0049] The UL transmission is processed at the base station 310 in a similar manner to that described in connection with the receiver function in the UE 350. Each receiver 318RX receives a signal through its respective antenna 320.
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Each 318RX receiver retrieves modulated information on an RF carrier and provides the information to an RX 370 processor.
[0050] The 375 controller / processor can be associated with a 376 memory that stores data and program codes. Memory 376 can be termed as a computer-readable medium. At UL, the 375 controller / processor provides demultiplexing between logical and transport channels, packet reassembly, decryption, header decompression, control signal processing to retrieve IP packets from the UE 350. IP packets from the 375 controller / processor can be provided to EPC 160. The 375 controller / processor is also responsible for error detection using an ACK and / or NACK protocol to support HARQ operations.
[0051] Figure 4 is a diagram 400 showing a base station 402 in communication with a UE 404. With reference to Figure 4, when the UE 404 connects, the UE 404 searches for a nearby 5G / NR network. UE 404 discovers base station 402, which belongs to a 5G / 5G / NR network. Base station 402 may transmit, for example, an SS block that includes PSS, SSS and PBCH (which includes MIB) periodically in different transmission directions 402a to 402h. UE 404 receives transmission 402e which includes PSS, SSS and PBCH. Based on the received SS block, the UE 404 synchronizes with the 5G / NR network and parks in a cell associated with base station 402. Base station 402 can transmit a beam-forming signal to UE 404 on one or more between directions 402a, 402b, 402c, 402d, 402e, 402f, 402g, 402h. The UE 404 can receive the signal with
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27/55 beam formation from base station 402 in one or more receiving directions 404a, 404b, 404c, 404d. UE 404 can also transmit a beamformed signal to base station 402 in one or more directions 404a to 404d. Base station 402 can receive the beamformed signal from UE 404 in one or more of the receiving directions 402a to 402h. The 402 / UE 404 base station can perform beam training to determine the best receive and transmit directions for each of the 402 / UE 404 base station. The receive and transmit directions for the 402 base station may or may not be the same . The receiving and transmitting directions for the UE 404 may or may not be the same.
[0052] Figure 5 illustrates an exemplary slot structure comprising DL centric slots and UL centric slots, which can be used in 5G / NR wireless communication. In 5G / NR, a slot can have, for example, a duration of 0.5 ms, 0.25 ms, etc., and each slot can have 7 or 14 symbols. A resource grid can be used to represent time slots, where each time slot includes one or more concurrent resource blocks (RBs) (also referred to as physical RBs (PRBs)). The resource blocks for the resource grid can be further divided into multiple resource elements (REs). The number of bits carried by each RE depends on the modulation scheme.
[0053] A slot can be DL only or UL only, and it can also be DL centric or UL centric. Figure 5 illustrates an exemplary DL centric slot. O
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28/55 DL centric slot can comprise a DL 502 control region, for example, in which the physical downlink control channel (PDCCH) is transmitted. Some of the REs in the DL centric slot can carry DL (pilot) reference signals (DL-RS) for channel estimation in the UE. DL-RS can include cell-specific reference signals (CRS) (also sometimes referred to as RS), UE-specific reference signals (UE-RS) and state channel information reference signals (CSI-RS) .
[0054] A control region of DL 502, 508 can cover one or a few OFDM symbols, for example, at the beginning of the slot. The DL 502, 508 control region can comprise multiple sub-bands, for example, 520a-j illustrated for the DL 502 control region. Sub-bands can also be referred to as feature sets. In this way, each sub-band 520a-j can comprise a set of features that cover only a portion of the bandwidth of the control region 202 instead of the entire bandwidth of the control region. This provides power savings in the UE by allowing the UE to monitor a lower bandwidth in order to receive control information. Figure 5 illustrates the control region 502 which has 10 sub-bands, for example, 10 sets of resources. This is just an example, and any number of sub-bands / feature sets can be understood in the control region. Additionally, Figure 5 illustrating the subbands / feature sets 520a a j which is similar in size. However, in other examples, the sizes, in frequency, of the sub-bands / pools of resources 520a to j may be different
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29/55 for different sub-bands / feature sets. The DL 508 control region can similarly comprise multiple sub-bands / sets of resources. The subbands / sets of resources for the DL 502 control region of a DL centric slot can be the same for the DL 508 control region of a UL centric slot. In another example, the subbands / feature sets can be different between the DL center slot and the UL center slot.
[0055] A base station can use the control region resource sets 502, 508 to transmit common control transmissions from the base station. For example, the base station can broadcast a physical broadcast channel (PBCH) that is cell specific and applies to multiple UEs. The PBCH can carry a main information block (MIB). The MIB can carry information such as the number of RBs in the DL system bandwidth and a system frame number (SEN). The base station can also use the feature sets from the control region 502, 508 to transmit the EU-specific control signaling, for example, via RRC, etc. Signaling can be specific to a single UE. Other UEs might not be aware of the resources used to transmit the specific UE control signals. In this way, resource pools can comprise at least one common resource pool, for example, subband, used for common control transmissions and possibly one or more EU-specific resource pools, for example, subband, used for broadcasts specific control systems.
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30/55 [0056] The DL center slot can comprise a DL 504 data region, for example, in which a downlink shared physical channel (PDSCH) carries user data, broadcast system information not transmitted through the PBCHs such as system information blocks (SIBs) and paging messages.
[0057] The DL centric slot can also comprise a common UL flashing region (ULCB) 506 in which UEs can send UL control channel information or other time-sensitive or otherwise critical UL transmissions. This ULCB region can also be referred to as an UL 506 control region.
[0058] The UL 506 control region of the DL centric slot, and similarly, the UL 512 control region of the UL centric slot can be subdivided into subbands / feature sets 522a through 522j. Figure 5 illustrates the UL 506, 512 control region that has 10 subband / resource pools. This is just an example, and any number of sub-bands / feature sets can be understood in the control region. In addition, Figure 5 illustrates the subbands / resource pools 522a to j which are similar in size. However, in other examples, different subbands / feature sets 522a may already have different bandwidths. A UE can transmit the physical uplink control channel (PUCCH), polling reference signals (SRS), physical random access channel (PRACH), etc. in UL 506, 512 control regions. SRS can be used by an eNB to estimate channel quality to enable frequency-dependent programming at UL. PRACH can
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31/55 be included within one or more slots within a slot structure based on the PRACH configuration. The PRACH allows the UE to perform initial system access and obtain UL synchronization. The UL 506, 512 control region can comprise a PUCCH that carries uplink control (UCI) information, such as scheduling requests, a channel quality indicator (CQI), a pre-coding matrix indicator (PMI ), a classification indicator (IR) and ACK / NACK feedback from HARQ.
[0059] Similar to the DL centric slot, the UL centric slot can comprise a DL 508 control region, for example, for PDCCH transmissions. The DL 502, 508 control region can comprise a limited number of symbols at the beginning of a slot. The UL centric slot can comprise a UL 510 data region, for example, for the transmission of a physical uplink shared channel (PUSCH) that carries data and can be additionally used to carry a temporary storage progress report ( BSR), an energy capacity report (PHR) and / or UCI. The UL 510 data region can be termed as a regular UL flashing region (ULRB).
Radio link monitoring [0060] Radio link monitoring (RLM) can be an important procedure for tracking radio link conditions. For example, two thresholds can be defined when tracking radio link conditions, for example, Q _in and Q _out . A first threshold, for example, Q _in , can correspond to a first error rate
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32/55 block (BLER) of a hypothetical PDCCH that indicates a condition in synchronization of the radio link, whereas a second threshold, for example, Q _out , can correspond to a second BLER that indicates a condition out of synchronization of the link radio. The first threshold can comprise a BLER less than the second threshold, for example, the first threshold can comprise a BLER of 10%, while the second threshold can comprise a BLER of 2%. These thresholds can be based on the static parameters of a hypothetical PDCCH transmission.
[0061]
An RLM procedure can comprise two stages of indications, for example, out of sync which indicates that the radio link condition is unsatisfactory and in synchronization which indicates that the radio link condition is acceptable and the UE is likely to receive a PDCCH transmitted on the radio link. An out of sync condition can be declared when the block error rate for the radio link fails before the Q _out threshold in a specified time interval, for example, a 200 ms time interval. A synchronizing condition can be declared when a block error rate for the radio link is better than the threshold Qi _n in a second specified time interval, for example, during the 100 ms time interval. The first and second time intervals can be the same or different.
[0062]
If the UE receives a n number of consecutive out-of-sync measurements, then the UE can start a timer, for example, of t seconds, to return to sync. Net numbers can be a
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33/55 configured parameter, for example, a static parameter.
[0063] If the UE detects a number of consecutive synchronization indications, the timer can be stopped, as the UE determined a synchronization condition for the radio link. Similar to n and t, the number m can be a configured parameter. However, if the UE does not detect consecutive synchronization indications before timer t expires, the UE can declare an RLE.
[0064] There is a need for a more robust RLE procedure for 5G / NR. For example, in 5G / NR, an RLM procedure can be used to infer radio link quality for a hypothetical PDCCH (for example, a potential PDCCH that can be transmitted by the base station) based on measurements for a signal different with the use of static parameters. For example, in 5G / NR, a PDCCH can be transmitted over a beam that is QCL with a set of signaled SS ports or a set of CSI-RS ports. For example, two antenna ports can be considered to be almost colocalized if the properties of the channel, in which a symbol in one antenna port is carried, can be inferred from the channel in which a symbol in the other antenna port is carried. QCL can support a number of features, which include, for example, beam management functionality that includes at least spatial parameters, timing / frequency shift estimation functionality that includes at least Doppler / delay parameters and RRM management functionality that includes at least less average gain. QCL can be indicated
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34/55 between ports. As the SS / CSI-RS port sets are QCL with the port for the PDCCH transmission, the UE can use measurements for the SS / CSI-RS to infer signal quality for a channel over which the PDCCH it is transmitted by observing the channel over which the SS / CSI-RS port set is transmitted. The UE may be able to infer parameters of the channel (such as delay spread, Doppler, etc.) over which the PDCCH is transmitted, by observing the channel over which the set of SS / CSI-RS ports is transmitted. The UE could also be able to infer spatial parameters of the PDCCH beam from the SS beam. The PDCCH beam could differ from the SS / CSI-RS beam, but it could be very similar to the SS / CSI-RS beam. Thus, sometimes the inferred radio link quality may not be accurate for the PDCCH. For example, even if a base station may be able to increase the power of the PDCCH, the UE can declare an RLE based on an out-of-sync determination based on static parameters.
[0065] A more robust solution is provided with dynamic network signal parameters for the UE to assist the UE in making a more accurate in-sync and out-of-sync determination in connection with RLM for 5G / NR. For example, the base station can signal any one of several dynamic parameters to the UE. In this way, the base station can signal an adjustment parameter to the UE, and the UE can use the adjustment parameter to apply a correction to the predicted RLM measurement of the hypothetical PDCCH based on the SS / CSI-RS signal. In certain
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35/55 examples, the dynamic parameter, for example, tuning parameter can refer to any one of a hypothetical PDCCH traffic-to-pilot ratio (TPR), beam relationships between a reference signal used for RDM and a beam of PDCCH, beam formation differences of a hypothetical PDCCH, beam width differences of a hypothetical PDCCH, beam orientation differences of a hypothetical PDCCH. The beam gain differences, beam width differences or beam orientation differences of the hypothetical PDCCH can be indicated in relation to a reference signal that the UE uses to perform RLM. An indication regarding TPR, beam formation gain, beam orientation, etc. they are merely examples of potential adjustment parameters. Other deviations or adjustments can also be indicated for the UE to assist the UE in deriving a quality determination for a hypothetical PDCCH. The UE can then use this information related to the tuning parameter (or parameters) to derive a more accurate quality determination for the link, for example, for better RLM performance.
[0066] As described above, the PDCCH can be transmitted in a beam using ports that are QCL with a set of SS ports or a set of CSI-RS ports. In this way, the UE can assume the same antenna port between the SS / CSI-RS used for RLM and a hypothetical PDCCH. The PDCCH beam could be very similar to the synchronization beam or the CSI-RS beam, but the PDCCH beam could not be exactly the same. For example, the PDCCH beam could have a narrower beam width than the synchronization / CSI-RS beams,
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guidance in bundle different , could be transmitted with a power bigger than the bundles of synchronization / CSI- RS, etc. [0067] According illustrated in the flowchart in 600 signal gives Figure 6, the base tation 604 (e.g., 102, 180, 310 , 402, 1050, 1302, 1302 ') can signal an recommendation 606 at least an adjustment parameter, per example, differences dynamic between the PDCCH beam it's the
reference signal beam that can be measured for RLM, for example, an SS / CSI-RS beam, by UE 602 (for example, for example, UE 104, 350, 404, 1350, apparatus 1002, 1002 ') . The base station can signal such parameter (or parameters) of adjustment to the UE in 606 with the use of any one of RRC signaling, a MAC of CE or DCI, among others. The base station can transmit SS or CSI-RS at 608, which the UE can measure to infer a signal quality for a hypothetical PDCCH, for example, PDCCH 616, which will be transmitted from BS 604 and received by UE 602. As illustrated in 610, the UE can use the tuning parameter (or parameters) to infer a radio link quality for a hypothetical PDCCH using SS / CSI-RS measurement, for example, as a metric to determine a condition in sync or out of sync. The UE can assume the same antenna port for the PDCCH as for the other RS on which the RLM measurement is based.
[0068] The UE can measure the reference signal port (or ports), for example, SS / CSI-RS port (or ports), and can apply a correction to the measurement based on the indicated difference between the PDCCH beam and the reference signal beam. The UE can then use metering
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37/55 corrected to derive a radio quality link, for example, by applying the thresholds configured to carry out a synchronization / out of synchronization determination. For example, the thresholds can be equal to or similar to Q _in and Q _out . Different threshold values can also be applied to determine the radio quality link. As described in connection with 906, 912 and 1014 in Figures 9 and 10, a UE can apply a configured threshold or a second configured threshold adjusted to determine a radio link quality for the PDCCH. The UE can compare the measurement with the threshold / threshold adjusted based on the indication from the base station.
[0069] In one example, radio quality measurement and in-sync / out-of-sync determination can be used to trigger a PDCCH beam recovery at 614. As 614 is an optional aspect, it is illustrated with a dashed line. In another example, radio quality measurement and in-sync / out-of-sync determination can be used to trigger an RLE 612 procedure. PDCCH beam recovery can include, for example, triggering a measurement report, send an SR to request a new beam, etc. An RLE procedure may include, for example, signaling to the highest layer that the radio link has failed and attempting to reestablish an RRC connection.
[0070] The indication of the difference (or differences) / adjustment (or adjustments) between the PDCCH and the reference signal used for measurement can include any one of several characteristics. Figure 7
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38/55 illustrates a signal flowchart 700 for communication between UE 602 and base station 604 that illustrates examples of several characteristics that can be indicated for UE 602 from base station 604. These differences / adjustment parameters are merely examples. Another adjustment deviation (or deviations) / parameter (or parameters) can be indicated for the UE and used by the UE to predict / derive a BLER for a hypothetical PDCCH based on measurements of a reference signal that is assumed to be QCL with the hypothetical PDCCH.
[0071] In a first example, the base station can signal a beam formation gain difference 702 between the PDCCH beam and the SS / CSIRS beam (or beams) to the UE. As a part of 610, the UE can apply a correction to the SS / CSI ports measured based on the indicated beam formation gain or it can apply a correction to the thresholds configured based on the beam formation gain in order to determine a quality radio link for the PDCCH.
[0072] In a second example, the base station can signal information related to a beam width ratio between the PDCCH beam and the SS / CSI-RS beam (or beams) to the UE in 704. The UE can to estimate a hypothetical delay spread for the PDCCH in relation to the SS / CSI-RS beams, due to the fact that a narrower beam implies, in general, narrower delay spread. As a part of 610, the UE can then apply a correction to the SS / CSI ports measured based on the hypothetical delay spread, or it can apply a correction to the thresholds configured based on the
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39/55 hypothetical delay spread, in order to determine a more precise radio link quality for the PDCCH.
[0073] In a third example, the base station can signal a higher TPR for the PDCCH compared to the SS / CSI-RS for the UE in 706. The UE can measure the SS / CSI-RS ports. As a part of 610, the UE can then apply a correction to the measured energy for the SS / CSI ports based on the indicated TPR difference or it can apply a correction to the thresholds configured based on the TPR difference in order to determine more precise radio link quality for the PDCCH.
[0074] In a fourth example, the base station can signal information related to a beam orientation relationship between the PDCCH beam and the SS / CSI-RS beam (or beams) to the UE at 708. The UE can measure SS / CSI-RS ports. As a part of 610, the UE can then apply a correction to the SS / CSI ports measured based on the difference in beam orientation or can apply a correction to the thresholds configured based on the difference in beam orientation in order to determine a more accurate radio link quality for the PDCCH.
[0075] Figure 8 is a flow chart 800 of a wireless communication method. The method can be performed by a UE (for example, UE 104, 350, 404, 602, 1350, the apparatus 1002, 1002 ') that communicates wirelessly with a base station (for example, the base station 102, 180, 310, 402, 604, 1050, apparatus 1302, 1302 ').
[0076] In 802, the UE receives at least one adjustment parameter related to a PDCCH from a base station. The adjustment parameter can comprise a
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40/55 dynamic parameter. The adjustment parameter can comprise a relationship between a first beam width of the PDCCH and a second beam width of at least one of the SS or CSI-RS, for example, as described in connection with Figure 7. The parameter of tuning can comprise a relationship between a first transmit power of the PDCCH and a second transmit power of at least one of the SS or CSI-RS, for example, as described in connection with Figure 7. The tuning parameter can comprise a relationship between a first TPR of the PDCCH and a second TPR of at least one among the SS or CSI-RS, for example, as described in connection with Figure 7. The adjustment parameter can comprise a relationship between a first orientation of beam of the PDCCH and a second beam orientation of at least one within the SS or CSIRS, for example, as described in connection with Figure 7. The adjustment parameter may comprise a beam-forming gain difference between the PDCCH andthe at least one of the SS or CSI-RS, for example, as described in connection with Figure 7. These examples of potential adjustment parameters are merely examples. Another deviation (or deviations) / parameter (or parameters) between the measured reference signal and the hypothetical PDCCH can be indicated for the UE for use in deriving a BLER for the hypothetical PDCCH based on the reference signal. The setting parameter can be received in 802 as at least one of the RRC signaling, a MAC or DCI control element.
[0077] In 804, the UE receives, from the base station, a reference signal on a first port which is QCL with a second port of the PDCCH. The signal
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41/55 reference can comprise at least one of an SS / CSIRS on a first port which is QCL with a second port of the PDCCH. The UE can measure energy at the SS / CSI-RS port (s) based on the received reference signal.
[0078] In 806, the UE performs a radio link measurement for the hypothetical PDCCH based on at least one received from the SS or CSI-RS using the adjustment parameter (or parameters) related to the PDCCH. The UE can perform a radio link measurement based on the received SS / CSI-RS to derive a radio link measurement for the hypothetical PDCCH using the PDCCH-related adjustment parameter. For example, the UE can estimate or otherwise predict a link quality for the hypothetical PDCCH based on the SS / CSI-RS received by applying a correction based on the adjustment parameter.
[0079] The UE can also derive a radio link quality for the hypothetical PDCCH in 808 based on at least one of the SS or CSI-RS with the use of a configured threshold and the dynamic parameter. The configured threshold can be a static threshold that is known to the UE. For example, such static parameters can be defined in one specification or predefined in another way. For example, static parameters such as a sync threshold, an out of sync threshold, a time t for a timer, a number n of out of sync indications or a number m of sync indications, as discussed above for RLM, are examples of such configured parameters. In other examples, the parameters can be indicated for the UE. The UE can perform at least one of a recovery
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42/55 of PDCCH beam at 812 or a radio link failure procedure at 810, when the radio link quality derived from 808 is below a first level. Thus, when the derived radio link quality is below a desired level, an RLF or PDCCH recovery can be triggered.
[0080] As shown in flowchart 900 of Figure 9, in performing the radio link measurement in 806, the UE can measure at least one of the SS or CSIRS in 902. The UE can measure a channel energy or SNR on the SS / CSI-RS port (or ports). In 904, the UE can adjust the measurement based on the adjustment parameter (or parameters) related to the PDCCH. The adjustment parameter (or parameters) can comprise a dynamic parameter. Then, in 906, the UE can compare the adjusted measurement with a threshold configured to derive a radio link quality. As an alternative way to derive radio link quality, the UE can measure a signal quality for at least one of the SS or CSI-RS in 908. Then, in 912, the UE can compare the measurement with the configured threshold adjusted to derive radio link quality. The adjusted threshold may comprise a second threshold. In this way, the device can compare the measurement with a first threshold or the second threshold. In this way, instead of comparing the measurement with the configured threshold, as in 906, the UE can compare the measurement with the second configured threshold (for example, adjusted). In 910, the UE can adjust a threshold configured based on the adjustment parameter related to the PDCCH. The adjustment of the configured threshold can correspond to the selection of the adjusted threshold. As described in connection
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43/55 with the radio link quality component 1014, the derivation of a radio link quality may comprise comparing a measurement with the configured threshold or comparing the measurement with an adjusted threshold. For example, the adjustment parameter may comprise an indication between two / more thresholds to enable the UE to select an adjusted configured threshold.
[0081] Figure 10 is a conceptual data flow chart 1000 that illustrates the data flow between different media / components in an exemplary apparatus 1002. The apparatus may be a UE (for example, UE 104, 350, 404, 602, 1350 ) that communicates wirelessly with a base station 1050 (e.g., base station 102, 180, 310, 402, 604, device 1302, 1302 '). The apparatus includes a receiving component 1004 configured to receive DL communication from a base station 1050, which includes SS / CSI-RS, and a transmission component 1006 configured to transmit UL communication with the base station 1050 The apparatus may include an adjustment parameter component 1008 configured to receive an adjustment parameter (or parameters) related to a PDCCH, which may be received via receiving component 1004. The apparatus may include a measuring component 1010 that measures an SS / CSI-RS that is received by the receiving component 1004. The instrument may comprise an adjustment component 1012 configured to adjust at least one of the measurement and a parameter configured based on the adjustment parameter. The apparatus may comprise a radio link quality component 1014 configured to derive a radio link quality. The derivation
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44/55 can comprise comparing an adjustment measurement with the configured threshold or comparing the measurement with an adjusted threshold. An adjusted threshold can comprise a second threshold. In this way, the device can compare the measurement with a first threshold or the second adjusted threshold. The apparatus may include an RLF 1016 component configured to perform an RLF procedure when the derived quality is below a desired threshold. The apparatus may comprise a PDCCH 1016 recovery component configured to perform PDCCH recovery when the derived quality is below a desired threshold.
[0082] The apparatus may include additional components that perform each one of the algorithm blocks in the flowcharts mentioned above in Figures 6, 7, 8 and 9. As such, each block in the flowcharts mentioned above in Figures 6, 7, 8 and 9 it can be performed by a component and the device can include one or more among those components. The components can be one or more hardware components specifically configured to execute the mentioned process / algorithm, deployed by a processor configured to perform the mentioned process / algorithm, stored on a computer-readable medium for deployment by a processor, or some combination of the themselves.
[0083] Figure 11 is a diagram 1100 illustrating an example of a hardware deployment for a device 1002 'that employs a processing system 1114. The processing system 1114 can be deployed with a bus architecture, represented in general bus 1124. The 1124 bus can include
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45/55 numerous interlaced buses and bridges that depend on the specific application of the 1114 processing system and the general design restrictions. The bus 1124 joins several circuits that include one or more hardware components and / or processors, represented by the processor 1104, the components 1004, 1006, 1008, 1010, 1012, 1014, 1016, 1018 and the computer-readable media / memory 1106 The 1124 bus can also connect several other circuits, such as timing sources, peripherals, voltage regulators and power management circuits, which are well known in the art and, therefore, will not be described further.
[0084] The processing system 1114 can be coupled to a transceiver 1110. Transceiver 1110 is coupled to one or more antennas 1120. Transceiver 1110 provides a means to communicate with several other devices through a transmission medium. Transceiver 1110 receives a signal from one or more antennas 1120, extracts information from the received signal and supplies the extracted information to processing system 1114, specifically the receiving component 1004. In addition, transceiver 1110 receives information from the processing 1114, specifically, of the transmission component 1006 and, based on the information received, generates a signal to be applied to one or more antennas 1120. The processing system 1114 includes a processor 1104 coupled to a computer-readable medium / memory 1106 The 1104 processor is responsible for general processing, including running software stored in the 1106 computer / memory readable medium. The software, when run
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46/55 by processor 1104, makes the processing system 1114 perform the various functions described above for any particular device. Computer-readable medium / memory 1106 can also be used to store data that is handled by processor 1104 when running software. The processing system 1114 additionally includes at least one of the components 1004, 1006, 1008, 1010, 1012, 1014, 1016, 1018. The components can be software components reproduced on processor 1104, located / stored in memory / medium readable by computer 1106, one or more hardware components coupled to processor 1104 or some combination thereof. Processing system 1114 may be a component of UE 350 and may include memory 360 and / or at least one among the TX 368 processor, the RX 356 processor and the 359 controller / processor.
[0085] In one configuration, the device 1002/1002 'for wireless communication includes means for receiving an adjustment parameter related to a PDCCH (for example, 1008), means for receiving an SS / CSI-RS (1004), means to perform a radio link measurement based on the received SS / CSI-RS and the setting parameter (1010), means for measuring the SS / CSI-RS (for example, 1010), means for adjusting at least one of the measurement and a parameter configured based on the setting parameter (1012), means to derive a radio link quality (1014), means to perform an RLE procedure (1016) and means to perform a PDCCH recovery (1018). The aforementioned means can be one or more of the aforementioned components of the apparatus 1002 and / or the
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47/55 processing 1114 of the apparatus 1002 'configured to perform the functions mentioned by the aforementioned means. As described above, the processing system 1114 may include the TX 368 processor, the RX 356 processor and the controller / processor 359. Thus, in one configuration, the aforementioned means may be the TX 368 processor, the RX 356 processor and the 359 controller / processor configured to perform the functions cited by the aforementioned means.
[0086] Figure 12 is a flow chart 1200 of a wireless communication method. The method can be carried out by a base station, for example, base station 102, 180, 310, 402, 604, 1050, the device 1302, 1302 ', which communicates wirelessly with a UE, for example, EU 104, 350, 404, 602, 1350, apparatus 1002, 1002 '). In 1202, the base station can transmit at least one adjustment parameter to the UE related to a PDCCH from the base station, for example, PDCCH transmitted in 1206. In 1204, the base station can transmit to the UE , at least one of an SS or CSI-RS on a first port that is QCL with a second port on the PDCCH.
[0087] The adjustment parameter can comprise a relationship between the PDCCH and at least one among the SS or CSI-RS for the derivation of a radio link quality. The adjustment parameter can comprise a relationship between a first beam width of the PDCCH and a second beam width of at least one of the SS or CSI-RS, for example, as described in connection with Figure 7. The parameter of This adjustment may comprise a relationship between a first transmission power of the PDCCH and a second
Petition 870190091163, of 9/13/2019, p. 54/88
48/55 transmission power of at least one of the SS or CSI-RS, for example, as described in connection with Figure 7. The adjustment parameter can comprise a relationship between a first TPR of the PDCCH and a second TPR of the at least one of the SS or CSI-RS, for example, as described in connection with Figure 7. The adjustment parameter may comprise a relationship between a first beam orientation of the PDCCH and a second beam orientation of the at least one between SS or CSI-RS, for example, as described in connection with Figure 7. The adjustment parameter can comprise a difference in beam formation gain between the PDCCH and at least one among the SS or CSI- RS, for example, as described in connection with Figure 7. These are merely examples of the information that can be included in the adjustment parameters. Other differences / deviations can be indicated in the adjustment parameter. The adjustment parameter can be transmitted in 1202 as at least one of the RRC signaling, a MAC or DCI control element.
[0088] The adjustment parameter transmitted by the base station at 1202 can be used by the UE to adjust a signal quality in the derivation of the radio link quality. The adjustment parameter transmitted by the base station can be used by the UE to adjust a threshold configured based on the derivation of the radio link quality. As described in connection with 912 in Figure 9 and 1014 in Figure 10, this may enable the UE to apply a configured threshold or a configured second threshold adjusted to derive a radio link quality for the PDCCH. When the quality of the radio link derived in the
Petition 870190091163, of 9/13/2019, p. 55/88
49/55
UE is below a desired threshold, it can trigger an RLE procedure or a PDCCH recovery procedure. For example, when the UE loses a radio link, the UE can signal to the higher layers of the UE that the radio link has failed. The UE can then initiate a new RACH and attempt to reestablish an RRC connection. In another example, a base station can use a time to identify when a UE has lost a radio link, for example, when the base station has not received communication from the UE for a defined amount of time.
[0089] Figure 13 is a conceptual data flowchart 1300 that illustrates the data flow between different media / components in an example device 1302. The device can be a base station, for example, base station, for example, the base station 102, 180, 310, 402, 604, 1050. The apparatus includes a receiving component 1304 that is configured to receive UL communication from an UE 1350, for example, UE 104, 350, 404, 602, apparatus 1002, 1002 '). The apparatus may include a transmission component 1306 configured to transmit DL communication to the UE, including any one of an adjustment parameter, an SS / CSI-RS and a PDCCH. The apparatus may include an adjustment parameter component 1308 configured to transmit, for example, via transmission component 1306, an adjustment parameter to the UE related to a PDCCH from the base station. The adjustment parameter can be used to adjust a threshold configured for the derivation of the radio link quality, for example, as described in
Petition 870190091163, of 9/13/2019, p. 56/88
50/55 connection to 912 and 1014, the UE can use information from the base station and can compare a measurement for SS / CSI-RS with a configured threshold or a second configured threshold adjusted to derive a radio link quality for the PDCCH. The apparatus may include an SS / CSI-RS 1310 component configured to transmit, through transmission component 1306, at least one of an SS and a CSI-RS. The apparatus may include a PDCCH 1312 component configured to transmit a PDCCH to the UE, for example, according to the indicated adjustment parameter.
[0090] The apparatus may include additional components that make each of the blocks of the algorithm in the flowcharts mentioned above in Figures 6, 7 or 12. As such, each block in the flowcharts mentioned above in Figures 6, 7 or 12 can be realized by a component and the apparatus may include one or more of those components. The components can be one or more hardware components specifically configured to execute the mentioned process / algorithm, implanted by a processor configured to carry out the mentioned process / algorithm, stored in a computer-readable medium for implantation by a processor, or some combination of themselves.
[0091] Figure 14 is a diagram 1400 illustrating an example of a hardware deployment for a device 1302 'employing a 1414 processing system. The 1414 processing system can be deployed with a bus architecture, represented in general through the 1424 bus. The 1424 bus can include numerous interlaced buses and bridges that depend on the
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51/55 specific application of the 1414 processing system and the general design restrictions. The bus 1424 joins several circuits that include one or more hardware components and / or processors, represented by the processor 1404, the components 1304, 1306, 1308, 1310, 1312 and the computer-readable medium / memory 1406. The bus 1424 can also joining several other circuits, such as timing sources, peripherals, voltage regulators and power management circuits, which are well known in the art and therefore will not be described further.
[0092] The processing system 1414 can be coupled to a transceiver 1410. Transceiver 1410 is coupled to one or more antennas 1420. Transceiver 1410 provides a means of communicating with various other devices via a transmission medium. Transceiver 1410 receives a signal from one or more antennas 1420, extracts information from the received signal and supplies the extracted information to processing system 1414, specifically receiving component 1304. In addition, transceiver 1410 receives information from the processing 1414, specifically, of the transmission component 1306 and, based on the information received, generates a signal to be applied to one or more antennas 1420. The processing system 1414 includes a processor 1404 coupled to a computer-readable media / memory 1406 The 1404 processor is responsible for general processing, including running software stored on computer-readable media / 1406 memory. The software, when run by the 1404 processor, causes
Petition 870190091163, of 9/13/2019, p. 58/88
52/55 that the 1414 processing system performs the various functions described above for any particular device. Computer-readable media / memory 1406 can also be used to store data that is handled by the 1404 processor when running software. The processing system 1414 additionally includes at least one of the components 1304, 1306, 1308, 1310, 1312. The components can be software components reproduced on processor 1404, located / stored in memory / computer-readable medium 1406, one or more hardware components attached to the 1404 processor or some combination thereof. Processing system 1414 may be a component of base station 310 and may include memory 376 and / or at least one among the TX processor 316, the RX processor 370 and the controller / processor 375.
[0093] In one configuration, apparatus 1302/1302 'for wireless communication includes means for transmitting an adjustment parameter to a UE related to a PDCCH from the base station (eg 1308), means for transmitting to the UE at least one of an SS and a CSI-RS comprising a first port which is QCL with a second port of the PDCCH (for example, 1310), wherein the tuning parameter comprises a relationship between the PDCCH and the at least one among the SS or CSI-RS for the derivation of a radio link quality, and means for transmitting a PDCCH (for example, 1312). The aforementioned means can be one or more of the aforementioned components of the apparatus 1302 and / or the processing system 1414 of the apparatus 1302 'configured to perform the functions mentioned by the aforementioned means. As described above,
Petition 870190091163, of 9/13/2019, p. 59/88
53/55 the processing system 1414 may include the TX 316 processor, the RX 370 processor and the controller / processor 375. In such a configuration, the aforementioned means may be the TX 316 processor, the RX 370 and the controller / processor 375 configured to perform the functions mentioned by the aforementioned means.
[0094] It is understood that the specific order or hierarchy of blocks in the revealed processes / flowcharts is an illustration of exemplary approaches. Based on the design preferences, it is understood that the specific order or hierarchy of blocks in the processes / flowcharts can be reset. In addition, some blocks can be combined or omitted. The attached method claims present elements of the various blocks in a sample order and are not intended to be limited to the specific order or hierarchy presented.
[0095] The previous description is provided to enable anyone skilled in the art to practice the various aspects described in this document. Several changes to these aspects will be readily apparent to those skilled in the art, and the generic principles defined in this document can be applied to other aspects. Thus, the claims are not intended to be limited to the aspects shown in this document, but should be attributed to the total scope consistent with the language of the claims, where the reference to an element in the singular is not intended to mean one and only one except when specifically stated, but instead,
Petition 870190091163, of 9/13/2019, p. 60/88
54/55 one or more. The word exemplifier is used in this document to mean serving as an example, case or illustration. Any aspect described in this document as an example should not necessarily be interpreted as preferential or advantageous over other aspects. Except where specifically stated otherwise, the term does not refer to one or more. Combinations such as at least one of A, B or C, one or more of A, B or C, at least one of A, B and C, one or more of A, B and C and
A, B, C or any combination thereof include any combination of A, B and / or C, and may include multiples of A, multiples of B or multiples of C. Specifically, combinations such as at least one among A, B or C , one or more of A, B or C, at least one of A, B and C, one or more of A, B and C and A, B, C, or any combination thereof may be A only, B only, C only, A and B, A and C, B and C, or A and B and C, where any such combination may contain one or more member or members of A, B or C. All structural and functional equivalents of the elements of the various aspects described throughout the present disclosure that are known or will be known later by the elements of ordinary skill in the art are expressly incorporated by reference in this document and are intended to be encompassed by the claims. In addition, nothing disclosed in this document is intended to be dedicated to the public, regardless of whether such disclosure may be explicitly recited in the claims. The words module, mechanism, element,
Petition 870190091163, of 9/13/2019, p. 61/88
55/55 device and the like may not be a substitute for the words middle. As such, no element of claim should be interpreted as a more functional means, except when the element is expressly mentioned using the phrase means for.

权利要求:
Claims (8)
[1]
1. A method of wireless communication on a user device (UE) comprising:
receiving an adjustment parameter related to a physical downlink control channel (PDCCH) from a base station;
receive from the base station at least one of a synchronization signal (SS) or a channel status information reference signal (CSI-RS) comprising a first port which is quasi-co-located (QCL ) with a second PDCCH port; and perform a radio link measurement based on at least one received from the SS or CSI-RS to derive a radio link measurement for the PDCCH using the PDCCH-related adjustment parameter.
[2]
2/8 configured to derive the radio link quality for the PDCCH.
2. Method according to claim 1, in which the setting parameter is received as an indication via radio resource control (RRC).
[3]
3/8 that the adjustment parameter comprises a beam formation gain difference between the PDCCH and at least one among the SS or CSI-RS.
12. Method according to claim 1, in which the setting parameter is received as at least one of a radio resource control (RRC) control element, a media access control (MAC) element ) or downlink control (DO) information.
13. The method of claim 1, which further comprises:
derive a radio link quality based on at least one of the SS or CSI-RS with the use of a configured threshold and the adjustment parameter; and performing at least one of a PDCCH beam recovery or a radio link failure procedure, when the derived radio link quality is below a first level.
14. Device for wireless communication in a user equipment (UE) comprising:
a memory; and at least one processor attached to the memory and configured to:
receiving an adjustment parameter related to a physical downlink control channel (PDCCH) from a base station;
receive, from the base station, at least one of a synchronization signal (SS) or a channel status information reference signal (CSI-RS) comprising a first port which is quasi-co-located
Petition 870190091163, of 9/13/2019, p. 65/88
Method according to claim 1, in which the measurement of the radio link comprises:
measure a measurement of at least one of the SS or CSI-RS, where a radio link quality for the PDCCH is based on a comparison between a measurement and a configured threshold or a configured threshold adjusted to derive a link quality radio to the PDCCH.
[4]
4/8 (QCL) with a second port of the PDCCH; and perform a radio link measurement based on at least one received from the SS or CSI-RS using the adjustment parameter related to the PDCCH.
15. Apparatus according to claim 14, in which the setting parameter is received as an indication via radio resource control (RRC).
16. Apparatus according to claim 14, in which to perform the radio link measurement, the at least one processor is configured to:
measure a measurement of at least one of the SS or CSI-RS, where a radio link quality for the PDCCH is based on a comparison between a measurement and a configured threshold or a configured threshold adjusted to derive a link quality radio to the PDCCH.
Apparatus according to claim 16, wherein, as a part of performing radio link measurement, the at least one processor is additionally configured to:
adjust the measurement based on the adjustment parameter related to the PDCCH; and compare the adjusted measurement with the threshold configured to derive the radio link quality for the PDCCH.
An apparatus according to claim 16, wherein, as a part of carrying out radio link measurement, the at least one processor is additionally configured to:
compare the measurement with the configured threshold adjusted to derive the radio link quality for the
Petition 870190091163, of 9/13/2019, p. 66/88
4. Method according to claim 3, in which the measurement of the radio link comprises:
adjust the measurement based on the adjustment parameter related to the PDCCH; and compare the adjusted measurement with the threshold
Petition 870190091163, of 9/13/2019, p. 63/88
[5]
5/8
PDCCH.
19. Apparatus according to claim 18, wherein the at least one processor is additionally configured to:
adjust a threshold configured based on the adjustment parameter related to the PDCCH.
Apparatus according to claim 14, wherein the at least one processor is additionally configured to:
derive a radio link quality based on at least one of the SS or CSI-RS with the use of a configured threshold and the adjustment parameter; and performing at least one of a PDCCH beam recovery or a radio link failure procedure, when the derived radio link quality is below a first level.
21. Wireless communication method at a base station comprising:
transmitting an adjustment parameter to user equipment (UE) related to a physical downlink control channel (PDCCH) from the base station; and transmitting to the UE at least one of a synchronization signal (SS) or a channel status information reference signal (CSI-RS) comprising a first port which is quasi-co-located (QCL) with a second PDCCH port, where the adjustment parameter comprises a relationship between the PDCCH and at least one of the SS or CSI-RS for the derivation of a radio link quality.
Petition 870190091163, of 9/13/2019, p. 67/88
5. Method according to claim 3, in which the measurement of the radio link comprises:
compare the measurement with the configured threshold adjusted to derive the radio link quality for the PDCCH.
[6]
6/8
22. Method according to claim 21, in which the adjustment parameter is indicated via radio resource control (RRC).
23. The method of claim 21, wherein the tuning parameter is used to adjust a signal quality in the derivation of the radio link quality.
24. The method of claim 21, wherein the adjustment parameter is used to adjust a threshold configured based on the derivation of the radio link quality.
25. The method of claim 21, wherein the adjustment parameter indicates the relationship between a first beam width of the PDCCH and a second beam width of at least one of the SS or CSI-RS.
26. The method of claim 21, wherein the setting parameter indicates the relationship between a first transmission power of the PDCCH and a second transmission power of at least one of the SS or CSI-RS.
27. The method of claim 21, wherein the adjustment parameter indicates the relationship between a first traffic-to-pilot ratio (TPR) of the PDCCH and a second TPR of at least one of the SS or CSI-RS.
28. The method of claim 21, wherein the adjustment parameter indicates the relationship between a first beam orientation of the PDCCH and a second beam orientation of at least one within the SS or CSIRS.
29. The method of claim 21, in
Petition 870190091163, of 9/13/2019, p. 68/88
A method according to claim 5, which further comprises:
adjust the threshold configured based on the adjustment parameter related to the PDCCH.
[7]
7/8 that the adjustment parameter comprises a beam formation gain difference between the PDCCH and the at least one among the SS or CSI-RS.
30. Method according to claim 21, wherein the setting parameter is transmitted as at least one of a radio resource control (RRC) control element, a media access control (MAC) element ) or downlink control (DO) information.
31. Device for wireless communication at a base station comprising:
a memory; and at least one processor attached to the memory and configured to:
transmitting an adjustment parameter to user equipment (UE) related to a physical downlink control channel (PDCCH) from the base station; and transmitting to the UE at least one of a synchronization signal (SS) or a channel status information reference signal (CSI-RS) comprising a first port which is quasi-co-located (QCL) with a second PDCCH port, where the adjustment parameter comprises a relationship between the PDCCH and at least one of the SS or CSI-RS for the derivation of a quality
in link of32. radio. the claim 31, Device of a deal with in that the adjustment parameter is indicated through control in resource of radio (RRC). 33. Device of a deal with the claim 31,
Petition 870190091163, of 9/13/2019, p. 69/88
A method according to claim 1, wherein the adjustment parameter comprises a relationship between a first beam width of the PDCCH and a second beam width of at least one among the SS or CSI-RS.
8. Method according to claim 1, wherein the adjustment parameter comprises a relationship between a first transmission power of the PDCCH and a second transmission power of at least one among the SS or CSI-RS.
9. Method according to claim 1, wherein the adjustment parameter comprises a relationship between a first traffic-to-pilot ratio (TPR) of the PDCCH and a second TPR of at least one of the SS or CSI-RS.
10. The method of claim 1, wherein the adjustment parameter comprises a relationship between a first beam orientation of the PDCCH and a second beam orientation of at least one within the SS or CSIRS.
11. Method according to claim 1, in
Petition 870190091163, of 9/13/2019, p. 64/88
[8]
8/8 where the adjustment parameter is used to adjust a threshold configured based on the derivation of the radio link quality.

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法律状态:
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US201762473238P| true| 2017-03-17|2017-03-17|

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