method, user equipment, and apparatus for concession-free transmissions

专利摘要:
a method modality for configuring a concession-free resource comprises configuring a first type of concession-free resource, in which the first type of concession-free resource is cell-specific and is configured using broadcast signaling, and in which the first type concession-free resource is accessible to a eu without additional configuration; and configuring a second type of free concession resource, where the second type of free concession resource is eu specific and is configured using a combination of broadcast signaling and unicast / multicast signaling, and where the second type of free resource concession is accessible to a eu only after the unicast / multicast configuration.
公开号:BR112019020901A2
申请号:R112019020901
申请日:2018-03-07
公开日:2020-04-28
发明作者:Ma Jianglei；Zhang Liqing；Cao Yu
申请人:Huawei Tech Co Ltd；
IPC主号:

专利说明:

“METHOD, USER EQUIPMENT, AND APPLIANCE FOR FREE CONCESSION TRANSMISSIONS” FIELD OF TECHNIQUE [001] The present invention relates in general to a system and method for wireless communications, and, in particular modalities, to a system and method for signaling the configuration of a concession-free resource with unsecured transmission resources.
GROUNDS [002] A user equipment (UE), a mobile station, or a similar component will be referred to in this document as a UE. A UE can communicate on an uplink with a base station, an access point, an evolved B node (eNB), a gNB, a transmit / receive point, or a similar component. On some wireless networks, before the UE can transmit on the uplink, the UE must send a scheduling request (SR) to the base station requesting resources for uplink transmission. In response to receiving the scheduling request, the base station can provide the UE with an uplink scheduling grant (SG) by allocating resources to the UE for use to transmit data on the uplink.
[003] On some proposed wireless networks, uplink transmissions can occur in a concession-free manner. In the concession-free approach, uplink resources can be pre-configured and allocated to multiple UEs without the UEs sending scheduling requests. When one of the UEs is ready to transmit on the uplink, the UE can immediately start transmitting on the pre-configured resources without the need to request and receive an uplink scheduling grant. The concession-free approach can reduce signaling overhead and latency compared to the uplink SR / SG approach.
[004] Concession-free uplink transmissions may be suitable for transmitting short packet burst traffic from UEs to a base station and / or for transmitting data to the base station in real time or with low latency. Examples of applications in which a concession-free uplink transmission scheme can be
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2/70 used include massive machine-type communication (m-MTC), ultra-reliable low-latency communications (URLLC), smart electrical meters, smart grid teleprotection, and autonomous activation. However, concession-free uplink transmission schemes are not limited to such applications.
SUMMARY [005] In some embodiments, a UE can receive a Radio Resource Control (RRC) signal. The RRC signal can specify at least one EU-specific temporary GF radio network identifier (GF-RNTI). The EU-specific GFRNTI is different from a cell RNTI (C-RNTI) for an initial concession-based transmission. The UE can perform the UL GF transmission without waiting for a downlink control information (DCI) signal.
[006] In some modalities, the UE can detect the DCI signal in a search space of a physical downlink control channel (PDCCH) using the GF-RNTI. The DCI signal can comprise information about a retransmission related to the GF transmission. The DCI signal may also comprise specific GF configuration parameters. The UE can detect the DCI signal in the PDCCH search space using the GF-RNTI by unscrambling a cyclic redundancy check (CRC) of the DCI signal according to the GF-RNTI and performing a CRC check of the signal of DCI using the unscrambled CRC.
[007] The UE can perform the transmission of UL GF in response to receiving the RRC signal and before detecting the DCI signal. In some modalities, before receiving the RRC, the UE can perform initial access by sending a preamble through a random access channel (RA) (RACH).
[008] In some modalities, a user equipment (UE) can receive a Radio Resource Control (RRC) signal. The RRC signal can specify a GF group Temporary Radio Network Identifier (RNTI) and an EU index. The RNTI of GF group can be shared in common by a group of UEs. The UE index can be assigned to the UE. In addition, the EU index may differ from the EU indexes assigned to other UEs in the group of UEs. The UE can receive a multicast signal. The multicast signal can specify at least frequency resources and Modulation Scheme
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3/70 and Coding (MCS) to be shared by the UEs in the group. In some embodiments, the multicast signal may be a common group downlink control (DCI) information signal addressed to the UE group sharing the RNF of the GF group. GF group RNTI can be used to scramble a cyclic redundancy check (CRC) from common group DCI. The UE can perform UL GF transmissions. The UE can perform UL GF transmissions according to the GF group RNTI, the UE index, the frequency resources, and the MCS.
[009] In some modalities, the UE can determine a reference signal according to the EU index. In these modalities, the UE can carry out UL GF transmissions according to the determined reference signal, the RNF of GF group, the frequency resources, and the MCS. The reference signal can be determined on the basis of a currently configured reference signal, the EU index, and a total number of available reference signals.
[010] In some modalities, the UE may determine a jump pattern based on the EU index. The UE can perform UL GF transmissions according to the GF group RNTI, the UE index, the frequency resources, the MCS, and the determined hop pattern. The determined jumping pattern of the UE may differ from the jumping patterns of other UEs in the UE group.
[011] In some embodiments, the UE may receive an EU-specific RRC signal. The EU-specific RRC signal can specify a periodicity. The UE can perform UL GF transmissions according to the GF group RNTI, the UE index, the frequency resources, the MCS, and the periodicity.
[012] In some embodiments, a user equipment (UE) may receive an UE-specific resource hop pattern assigned to the UE. The EU-specific resource hop pattern can comprise hop information. The skip information can be associated with a subband to which the UE skips in each corresponding time slot of a plurality of time slots. The UE can perform UL GF transmissions according to the EU specific resource hop standard. In some embodiments, the subband to which the UE jumps in each corresponding time slot can be determined based on the specific EU cyclical displacement value.
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In one embodiment, the subband to which the UE jumps in each corresponding time slot can be determined based on the specific cyclic displacement value of the UE and an initial subband for the UE. In another embodiment, the subband to which the UE jumps in each corresponding time slot can be determined based on an UE identifier. For example, the subband to which the UE jumps in each corresponding time slot can be determined based on a specific UE pseudo-random sequence initialized by the UE identifier. In some embodiments, the UE identifier may be a temporary UE-specific GF radio network identifier (GF-RNTI). In yet another modality, the subband to which the UE jumps in each corresponding time slot can be determined based on a specific UE jump index assigned to the UE.
[013] In some modalities, the jump information can indicate the subband to which the UE jumps in each corresponding time division of the plurality of time divisions. The hop information can comprise a specific EU cyclical offset value. The UE-specific cyclic offset value can indicate a number of sub-bands to be cycled by the UE from one time slot to the next time slot.
[014] In some embodiments, the subband to which the UE jumps in each corresponding time slot can be determined based on a specific EU cyclical offset value derived from the specific EU jump index and a sub - initial band for the UE derived from the EU specific jump index. In some embodiments, the subband to which the UE jumps in each corresponding time slot can be determined based on an identifier of a group of UEs. For example, the subband to which the UE jumps in each corresponding time slot can be determined based on a group-specific pseudo-random sequence initialized by the UE group identifier. In one embodiment, the UE group identifier can be a temporary Radio Network Identifier (RNTI) group. In another embodiment, the UE group identifier is determined based on a specific UE jump index.
[015] In some modalities, the UE can determine a signal of
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5/70 reference based on a specific EU jump index.
[016] In some modalities, to carry out UL GF transmissions, the UE can determine a subband for which the UE jumps in a time division based on the jump information. The UE can then derive a physical resource block index (PRB) in the time division according to the given subband, a total number of resource blocks (RBs) in the given subband, and a total number of RBs assigned to GF transmissions. The UE can then carry out UL GF transmissions in the time division according to the derived PRB index.
BRIEF DESCRIPTION OF THE DRAWINGS [017] For a more complete understanding of the present invention, and its advantages, reference is now made to the following descriptions taken in conjunction with the accompanying drawings, in which:
[018] Figure 1 is a diagram of a wireless communications network modality;
[019] Figures 2A, 2B, and 3A to 3F are diagrams of various mode message flows between a concession-free UE and a base station;
[020] Figure 4 is a diagram of a modality of grouping UEs free of concession in time and frequency resource groups;
[021] Figure 5 is an exemplary flowchart for concession-free transmissions (FG);
[022] Figure 6 is an exemplary flowchart for concession-free uplink (UL) transmissions (GF) by user equipment (UE) in a group of UEs;
[023] Figure 7 is an exemplary flow chart for concession-free uplink (UL) transmissions (GF);
[024] Figure 8 is a block diagram of a processing system modality for carrying out methods described in this document; and [025] Figure 9 is a block diagram of a transceiver adapted to transmit and receive signaling over a telecommunications network.
DETAILED DESCRIPTION OF ILLUSTRATIVE MODALITIES [026] The structure, manufacture and use of the presently preferred modalities are discussed in detail below. It should be noted, however,
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6/70 that the present invention provides many applicable inventive aspects that can be incorporated in a wide variety of specific contexts. The specific modalities discussed are merely illustrative of specific ways to make and use the invention, and do not limit the scope of the invention.
[027] When a group of UEs in the coverage area of a base station are operating in concession-free mode, collisions can occur between two or more of the UEs. That is, two or more UEs can try to transmit using the same time and frequency resources, and the transmissions can thus be unsuccessful. Modalities of the present disclosure provide techniques for reducing the likelihood of collisions.
[028] The modalities provide flexible resource configuration and hop configuration by UEs from a first sub-band for a first transmission to a second sub-band for a second transmission. Resource configuration can be performed for a subframe and can be done for a flexible number of resource blocks. Concession-free resource regions are not predefined. Hop pattern signaling can only signal the jump after an initial transmission and may not include the initial location and size of the resources to be used. Simplified hop signaling can use a single EU-specific cyclic offset value. EU specific pseudo-random heel can be used. That is, a random skip sequence can be initialized by a UE identifier instead of a cell identifier. The flexible resource size setting allows for simple flagging and flexible resource block assignment.
[029] Therefore, the techniques described improve the network system with more efficient use of network resources.
[030] Figure 1 illustrates a communication network 100 in which the modalities of the present disclosure can be implemented. Network 100 comprises a base station 110 having a coverage area 101, a plurality of UEs 120, and a backhaul channel network 130. As shown, base station 110 establishes uplink connections 140 and downlink connections 150 with UEs 120, which serve to carry data from UEs 120 to base station 110 and vice versa. Data ported on uplink connections 140 and downlink connections 150 can include communicated data
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7/70 between UEs 120, as well as data communicated to a remote end (not shown) and from there via return transport channel network 130. In some cases, UEs 120 can communicate directly with each other the other in a device-to-device communication mode over a connection 160 which can be referred to as a side link.
[031] As used herein, the term "base station" refers to any component or collection of components configured to provide wireless access to a network, such as an eNB, one GNB 5 Generation (5G) a transmit / receive point (TRP), a macrocell, a femtocell, a Wi-Fi access point (AP), and other wireless enabled devices. Base stations can provide wireless access according to one or more wireless communication protocols, such as New Radio 5G (5G NR), long term evolution (LTE), advanced LTE (LTE-A), Packet Access High Speed (HSPA), or Wi-Fi 802.11a / b / g / n / ac, etc. As used herein, the term “UE” refers to any component or collection of components capable of establishing a wireless connection with a base station, such as a mobile device, a mobile station (STA), and other devices wireless enabled. In some embodiments, network 100 may comprise several other wireless devices, such as relays or low power nodes.
[032] Network 100 can use several high-level signaling mechanisms to enable and configure concession-free transmissions. UEs 120 can have concession-free transmissions capability and can signal that capability to base station 110. This can allow base station 110 to support both concession-free transmissions and conventional signal / concession transmissions (for example, for models older mobile devices) simultaneously. UEs 120 can signal this capability, for example, by Radio Resource Control (RRC) signaling defined in the Third Generation Partnership Project (3GPP) standards.
[033] Base station 110 can use high level signaling mechanisms (for example, a broadcast channel and / or a slow signaling channel, such as RRC signaling) to notify UEs 120 of information needed to enable and configure a concession-free transmission scheme. Base station 110 can update this information periodically using,
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8/70 for example, a slow signaling channel (for example, a signaling channel that occurs in the order of hundreds of milliseconds instead of occurring in each transmission time interval (TTI)). Common concession free resource information can be defined in a broadcast channel or system information. For example, system information can be transmitted by base station 110 in a System Information Block (SIB). System information may, however, include, without limitation, concession-free frequency bands (start and end) of the concession-free frequency boundary and the size of the concession-free partition.
[034] In some embodiments, base station 110 may use a combination of some or all of the higher layer signaling (for example, RRC signaling), broadcast signaling, and downlink control channel (such as DCI) for concession-free resource configuration.
[035] Concession-free uplink transmissions are sometimes called "no-concession", "no-agenda", or "no-agenda" transmissions. Concession-free uplink transmission can also be referred to as “UL transmission without concession”, “UL transmission without dynamic concession”, “transmission without dynamic scheduling”, “transmission using configured concession”. Sometimes, free grant resources configured in RRC without DCI signaling can be called a configured RRC grant or a configured grant type. Concession-free feature configured using both RRC and DCI signaling can also be called a configured lease, a configured DCI lease or another type of configured lease.
[036] Figure 2A illustrates a method method 200 for concession-free uplink (UL) transmissions between a concession-free UE 220 and a base station 230. The transmissions can use RRC information without having to check for Downlink Control (DCI) information prior to initial data transmission. The concession-free UE 220 can check for negative acknowledgment / confirmation (ACK / NACK) or through a dedicated ACK / NACK channel, such as Physical Hybrid Automatic Repeat Request (PHICH) Channel (HARQ) or DCI. RRC signaling is used to signal
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9/70 UE-specific and / or group-specific transmission and / or for reference signaling configuration. For Figure 2A, UE 220 can obtain all transmission resource information after RRC signals for configuration, and UE220 can perform uplink grant free transmission after RRC signaling without detecting an UL grant sent using signaling of DCI.
[037] With respect to the UE information specific, RRC signaling can be used to notify the grant-free UE 220 about information and for grant-free transmission such as, but without limitation, a UE identifier (ID) , a DCI search space, concession-free transmission resources, reference signal resources, and other information that may include, for example, a modulation and coding scheme (MCS).
[038] RRC signaling may include a concession-free ID field, such as a concession-free temporary radio network identifier (RNTI), which is used to define search space and scramble CRC for additional control signaling related to GF transmission, which can be referred to in this document as GF-RNTI. RRC signaling can also include other ID fields, such as cell RNTI (C-RNTI) or a combination of GF-RNTI and C-RNTI. The GF-RNTI can be used to control signaling used for grant-free resource (GF) configuration, resource activation / deactivation / GF transmission, GF transmission HARQ ACK / NACK, a concession-based retransmission, and any other signaling related to FG. RRC signaling can also include one or more of the following fields, but is not limited to the following fields. All fields described are also optional. RRC signaling can also, or alternatively, include one or more configuration superfields to configure for UL (such as gf-ConfigUL) and / or to configure for downlink (DL) (such as gf-ConfigDL). Here, concession-based retransmission means that the scheduling concession is sent over the network to grant a retransmission of the data initially transmitted using concession-free transmission. The concession-free RNTI used for concession-free transmission described in Figure 2A can also be used to scramble the Physical Uplink Shared Channel data
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10/70 (PUSCH) of a concession-free transmission. C-RNTI is the EU ID standard used for concession-based transmission. For example, C-RNTI can be used to mask the CRC from a DCI grant for grant-based transmission or a DCI grant for a retransmission of data transmitted using grant-based transmission. C-RNTI can also be used to scramble concession-based data transmission PUSCH data.
[039] Fields in the UL configuration superfield or directly in the RRC signaling may include, without limitation, the following examples.
[040] A grant-free_frame_interval_for_UL field can define the frequency of the resource hop pattern in terms of a number of subframes. It can use frame length, in which case the field can be optional, and the frame length defined for the system can be used by default.
[041] A grant-free_access_interval_UL field can define the interval between two concession-free transmission opportunities. The value can be 1 by default if not specified.
[042] There may also be fields for parameters related to power control that can serve a purpose similar to that used for semi-persistent LTE scheduling (SPS).
[043] A contention_transmission_unit_ (CTU) _size_frequency field can define the number of resource blocks used by CTU in the frequency domain or CTU region block size. The time domain can by default be a subframe or TTI. In this way, only the frequency domain may be necessary. The field is not necessary if defined in broadcast signaling (such as SIB) or if there is complementary DCI signaling. The containment transmission unit (CTU) may include time and frequency resources used for concession-free transmission.
[044] When the CTU size is defined in broadcast signaling, the CTU size is cell specific. When the CTU size is signaled in higher layer signaling (for example, RRC signaling) or DCI signaling, the CTU size can be UE specific and can be the same or different for different UEs. In some modalities, the size
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11/70 CTU is indicated by the number of virtual resource blocks (VRBs) or physical resource blocks (PRBs). In some cases, the CTU size may be the same as the size of the concession free subband that is used for resource hopping. In that case, if the concession free subband size is predefined or flagged, the CTU size may not need to be explicitly flagged.
[045] A grant-free_frame_interval_for_UL field can define the periodicity of the resource hop pattern. Periodicity can be defined in terms of a number of subframes or any other unit of time. The field can use the frame length as a standard, in which case the field can be optional. That is, the frame length defined for the system could be used by default.
[046] A grant-free_access_interval_in_the_time_domain field can define the time interval between two adjacent grant-free transmission resources (default should be 1 if not specified). This field can also be used to signal the periodicity of concession-free transmission resources and can serve a functionality similar to the periodicity field in LTE SPS.
[047] A resource_hoping_pattern field can define the resource hop pattern. In some embodiments, the resource hop pattern field is defined as a sequence of frequency location indices in each frame in each time slot with a time unit equal to a range UL value and concession free schedule. In some embodiments, the resource jump pattern field is defined as a sequence of frequency location indices in each frame at each time interval in general. The time interval can be a TTI, a division, a time division, a subframe, a mini-division, an OFDM symbol, several OFDM symbols, or any time unit. In some embodiments, the resource jump pattern field is defined as a sequence of CTU indices at each time interval in each frame. A resource hop pattern can be provided for a concession-free UE in the form of any one of 1) a single UE index defined from a predefined resource assignment rule, 2) a resource hop index sequence indicating the frequency index of each time interval, or 3) any implicit signaling
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12/70 or explicit physical effective time / frequency resources that can be used in each time division.
[048] A reference_signal_ (RS) _hopping_sequence field can define the RS jump sequence. An index of RS to be used in table n can be included. The RS can be set in the UE until an update is signaled, and the RS used can change over time. If the RS changes at each time interval, the field can include a sequence of indices at each time interval. The RS jump sequence may not be necessary if complementary DCIs are available. An RS hop sequence can be provided to a concession-free UE in the form of any one of 1) a fixed RS, and 2) an RS hop sequence in each frame.
[049] A multiple_access_ (MA) -Signature or MA_signature_tuple or MA_signature_hopping_pattern field can be used by the UE to send transmissions and retransmissions. The MA subscription can include (but is not limited to) at least one of the following: a code book / code word, a sequence, an interleaver and / or mapping pattern, a pilot, a demodulation reference signal (for example , a reference signal for channel estimation), a preamble, a spatial dimension, and a power dimension. The MA signature field can be similar to the RS or the jump field RS, but the MA signature field can indicate the signature / code book / string or any other MA signature used for a multiple access scheme, such as access by multiple sparse code (SCMA).
[050] In some modalities, the CTU and the RS resource / jump pattern can be signaled using a combination of assigned VRBs / PRBs and a jump sequence. Such a signaling scheme will be described in more detail below. VRBs / PRBs assigned can be VRB index or PRB index. A VRB index or a PRB index can be signaled using, for example, an initial RB index or an initial resource block group (RBG) index along with the number of RBs or the number of RBGs. An RBG refers to a group of RBs consisting of more than one RBs.
[051] An MCS field to provide MCS information, if no complementary DCI signaling is being used. MCS information can be EU-specific or resource-specific. The MCS field can also indicate whether (or by how much) the MCS should be reduced after the
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13/70 initial transmission to the UE. For example, an MCS hop pattern can be assigned to the UE for concession-free uplink transmission. The MCS hop pattern may indicate that an initial transmission may have a high MCS, a first retransmission may have a lower MCS, and a second retransmission may have an even lower MCS, etc.
[052] The number of K repetitions or the maximum number of K repetitions can be performed by the UE. For example, the UE can be configured to continue sending retransmissions until an ACK is received, but only up to a maximum of K retransmissions; or the UE can be configured to perform K repetitions without any return between repetitions. If K repetitions have been sent and an ACK is still not received, then the UE no longer sends any repetitions, and the UE considers that the data has not been received or correctly decoded by the base station.
[053] There may also be fields for parameters related to power control that can serve a purpose similar to that used for LTE semi-persistent scheduling (SPS).
[054] A search space field can be used to grant additional DCI, which can also be predefined by GF_ID or GroupJD. GF_ID is the grant-free EU ID, just like GF-RNTI. GroupJD is the group-based UE ID, such as group_RNTI, which targets more than one UE as described in that disclosure. The search space defines the potential time-frequency locations for granting DCI to a UE to be transmitted. The search space can be a function of GF-RNTI or C-RNTI.
[055] The RRC format may include an indication that the UE is a concession-free UE or is allowed to transmit using a concession-free resource. The RRC format can include a concession-free EU ID (such as GF-RNTI) or a group-based ID (such as Group_RNTI) that is used to decode additional instructions using DCI.
[056] The RRC signaling content described above is not limited to the case of Figure 2A and can apply to all cases of resource configuration free of concession, including all other examples, figures, cases described in this document.
[057] In the example in Figure 2A, the concession-free UE 220 does not need to constantly check DCI within the search space and does not need DCI to
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14/70 activate concession-free transmissions. DCIs can provide additional control signaling for UE 220. In some embodiments, the concession-free UE 220 can also monitor DCI for possible activation, deactivation, resource update, grant-based scheduling or any other control information that may be sent via DCI.
[058] In some modalities, whether or not an UE monitors DCI is signaled. Then, RRC signaling can also include whether the UE needs to monitor a downlink control channel or not. In grant-based uplink communications, a UE can regularly monitor a downlink control channel for DCIs that are being communicated to the UE, for example, by receiving a scheduling lease to the UE. However, when the UE is configured to perform concession-free uplink transmissions, the UE may not need to monitor the downlink control channel as often, or the UE may not need to monitor the downlink control channel at all. . How often (if it will be necessary) a UE performing concession-free uplink transmissions needs to monitor the downlink control channel can be defined by the network. For example, a UE performing concession-free uplink transmissions can be configured to monitor the downlink control channel once every T subframes, where T is a parameter configured by the network.
[059] Before the start of the steps in Figures 2A, 2B, 3A, and 3B, system information can be periodically transmitted by the base station. The system information can include information that is to be used by the UE. If information that would be used by the UE is not defined in the system information, then that information can be provided in RRC signaling and / or DCI messages.
[060] As shown in Figure 2A, in step 201, the UE 220 with concession-free transmissions capability first enters a network supported by base station 230 and performs initial access, for example, by sending a preamble through a transmission channel. random access (RA) (RACH) as part of a random access procedure on an LTE network. UE 220 can signal base station 230 an indication indicating that UE 220 has concession-free transmission capacity, for example,
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15/70 when UE 220 expects to transmit a large amount of small data packets.
[061] In step 202, base station 230 receives the preamble RACH RU or any other signal used for access and selects a UL transmission resource to be used by the UE 220. One mode provides that the UL transmission resources comprise a multiple access (MA) hop pattern predefined in a frame. For example, the MA hop pattern can include a predefined time / frequency resource hop pattern in a frame and / or a predefined RS hop pattern. The MA hop standard provides a universal RS and transmission resource mapping scheme that supports different numbers of UEs in uplink concession free MA transmissions. Base station 230 can obtain the predefined MA hop pattern from the network, for example, to save the MA hop pattern, or base station 230 can obtain the MA hop pattern by generating the MA hop pattern with based on a scheme to generate predefined pattern or a predefined rule. In addition to the MA hop pattern, there are several other elements used to define the transmission resources that are included in RRC signaling and that are transmitted to the UE 220.
[062] In step 203, base station 230 sends an UL transmission resource assignment to the UE 220 via RRC signaling after selecting the transmission resource to be used for the concession-free UE 220.
[063] In step 204, the concession-free UE 220 determines the available UL transmission resources. In some embodiments, UE 220 may derive transmission resources based on predefined rules after receiving the transmission resource assignment. Alternatively, the UE 220 can refer to a table and the predefined transmission resource hop pattern after receiving the transmission resource assignment above. The UE 220 can save the default transmission resource and predefined table. In addition, the UE 220 can update the predefined standard transmission resource and table after receiving the signal to instruct the update information.
[064] In step 205, first batch data arrives at the concession-free UE 220 for transmission to base station 230.
[065] In step 206, after the first batch data arrived, the UE
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220 transmits the first batch data transmission based on the assigned concession-free transmission resource. Concession-free resources can be allocated to UE 220 semi-statically. “Semi-static” is used in this document for comparison with the “dynamic” option that operates across time divisions. For example, semi-static can operate periodically over a given period of time, such as 200 or more time divisions. Once the grant-free UE 220 obtains the allocated resources, the UE 220 can transmit data using allocated resources immediately after the data arrives, without obtaining a grant. The UE 220 can transmit the initial transmission of the first batch data using the assigned UL transmission resources. In some embodiments, once the first batch data arrives in the concession free UE buffer (UE), the UE 220 determines the CTU regions of the next time slot or the next opportunity that the UE 220 can access from of resources assigned to UE 220. UE 220 determines the next time slot for CTU access after data arrives, and UE 220 searches for the CTU region in that time range based on the assigned resource hop sequence. The UE 220 can then transmit the initial transmission of the first batch of data using that CTU region and the RS assigned to that region. The transmission may include an RS signal and a data signal.
[066] In step 207, base station 230 detects the data after receiving the first batch data transmission. In some embodiments, when UE 220 sends a message to base station 230, base station 230 first attempts to detect the MA signature. Detecting the MA signature is referred to as activity detection. By successfully performing activity detection, base station 230 knows that UE 220 has sent a concession-free uplink transmission. However, successful activity detection may or may not reveal the identity of UE 220 to base station 230. If there is a predefined RS pattern between a UE and an MA subscription, then successful activity detection reveals a identity of the UE that sent the concession-free uplink transmission. In some embodiments, activity detection can additionally include obtaining the EU ID, for example, if the EU ID is encoded separately from the data.
[067] As part of the actions taken in step 207, if the detection of
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17/70 activity is successful, base station 230 then attempts to perform channel estimation based on the MA signature and optionally additional reference signals multiplexed with the data message, and then base station 230 decodes the data.
[068] In step 208, base station 230 sends an ACK or NACK based on the result of decoding in step 207. Base station 230 attempts to decode the initial transmission of the first batch data by first performing activity detection by decoding the RS signal, performing channel estimation using the RS signal, and then trying to decode the data. If base station 230 can successfully decode the data, the base station (BS) can send an ACK to UE 220 to confirm successful decryption. If base station 230 does not successfully decode the data, base station 230 can send a NACK to UE 220 or not send any returns. In some embodiments, after the initial transmission of the first batch of data in step 206, the UE 220 can immediately choose to retransmit the first batch of data using the next available resources according to the resource assignment in step 203. In other embodiments, the UE 220 can wait for a predefined period, and if the UE 220 receives an ACK within the predefined period, the UE 220 will not perform the retransmission. If the UE 220 does not receive an ACK within the predefined period, the UE 220 can retransmit the first batch data to the next available CTU resources after the predefined period.
[069] The UE 220 can check for an ACK / NACK return that can be transmitted either through a dedicated ACK / NACK channel, such as PHICH, or via group DCI or DCI by searching the search space.
[070] In Figure 2A, it is assumed that the base station 230 transmitted an ACK in step 208, because the grant-free UE 220 received a second batch data transmission and is not retransmitting the first batch data transmission. The UE 220 transmits the second batch data in step 209 based on the transmission resource obtained without communicating a corresponding transmission resource assignment to the network entity by assigning the transmission resources to the UE 220. Steps 210 and 211 are similar to steps 207 and 208, respectively.
[071] If base station 230 had sent a NACK in step 208,
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18/70 then the UE 220 would retransmit the first batch data transmission based on the assigned transmission resource defined in the RRC signaling or an alternative transmission resource that is provided for the UE 220.
[072] In some modalities, the UE 220 can only check for a dedicated ACK / NACK channel, such as PHICH, but not check the DCI after the first transmission. Therefore, the UE 220 can only perform transmission and retransmission without concession. The UE 220 can save energy by not being required to check DCI even after the first transmission.
[073] Steps 206 to 209 of Figure 2A and the associated description of the concession-free transmission / retransmission and HARQ response from the base station are only examples of the details of the concession-free transmission / retransmission based on concession-free resources assigned in the previous steps. There may be other steps for grant-free transmission / retransmission and HARQ response for the given grant-free resource assignment. The allocation and signaling of a concession-free resource may also apply to all such concession-free transmissions / retransmissions. In some embodiments, the base station (BS) may instead send a UL grant via DCI signaling as a HARQ response to the concession-free transmission. The concession can be a retransmission concession, that is, the BS can send an uplink concession for a retransmission of the data transmitted in the concession free transmission. The UE can then send the retransmission according to that uplink grant. In this case, the RRC-configured GF-RNTI can be used to scramble the CRC from the concession-free transmission retransmission concession. In some embodiments, UE can continue retransmission or retry until DCI indicating retransmission grant is received or until the number of repetitions reaches a K number, where K can be pre-configured in UE-specific RRC signaling. If the UE receives an UL grant sent in DCI for a retransmission, the UE then retransmits the concession-free transmission data using the resource indicated by the UL relay grant.
[074] In some modalities, for a concession-free resource configured using signaling not linked to DCI (for example, signaling of
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RRC), an example of which is shown in Figure 2A, the grant-free resource assigned to a UE can still be updated or released semi-statically (for example, through RRC) or dynamically (for example, through DCI).
[075] In some embodiments, for a concession-free resource configured using signaling not linked to DCI (for example, RRC signaling), an example of which is shown in Figure 2A, a UE can still wait for DCI activation before that the UE can transmit a concession-free transmission even though the resource is already configured by higher layer signaling. Enabling DCI may or may not include additional resource configuration information. The concession-free feature for the UE can also be disabled / disabled dynamically using DCI or semi-statically using RRC signaling.
[076] Figure 2B illustrates a concession-free resource configuration procedure type 260 that uses a combination of higher layer signaling (for example, RRC signaling) and complementary DCI signaling. The difference between the examples in Figure 2B and Figure 2A is that, in Figure 2B, the UE 220 may need to receive a DCI signal for resource configuration before the UE 220 can perform concession-free transmission. In Figure 2B, the UE 220 may need to monitor DCI after RRC signaling. DCI signaling can be used to provide additional relevant information for the UE 220.
[077] The concession-free resource signaling field may be similar to the example in Figure 2A, and the RRC signaling field may include some or all of the fields described with respect to Figure 2A. However, in some embodiments, some of the fields in the RRC signaling can instead be moved to the DCI activation / configuration step. These fields can include information that is typically used in a DCI grant, such as resource block assignment and resource hop pattern, and MCS, RS, RS hop pattern.
[078] The procedure of Figure 2B for concession-free UL transmissions includes using RRC signaling with complementary DCI signaling. DCI signaling can act as an activation or deactivation. Activation and deactivation indicators are sent by the station
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20/70 base 230 using DCI messages to indicate that the UE 220 is allowed or not allowed to make concession-free transmission. In this case, DCI activation can provide additional information for granting a concession-free resource. Without DCI activation, the UE 220 may not obtain enough information for concession-free transmission using only RRC signaling.
[079] In some modalities, DCI can have the following format:
Field Value MCS / RV Initial MCS value, RV = 0 NDI 0 (new transmission) Cyclic displacement ofDMRS Flag the first RS value in a given frame Resource block allocation Flag a first resource block allocation in the first time slot
[080] Based on the first RS value and the first resource block (or virtual resource block assignment) in combination with a resource jump sequence and an RS jump sequence (or just an RS jump rule over predefined frames), the UE 220 can assume the resource / allocation of particular RS in each CTU.
[081] RRC signaling assigns a concession-free EU ID or group ID to a group of UEs. RRC signaling also includes defining the search space so that the UE 220 knows where to look for DCI activation. The search space can also be defined by the EU ID (for example, GF-RNTI) or group ID (for example, group_RNTI). After receiving RRC signaling, the UE 220 still cannot perform concession-free transmission until it receives additional DCI signaling. In some cases, DCI signaling can serve as an activation of the concession-free transmission. In some embodiments, DCI signaling can serve as a semi-static complementary signaling to help specify concession-free resources for the UE 220. In some modalities, DCI signaling can serve as both resource activation and configuration. UE 220 may need to wait until receipt of DCI activation. In this way, the UE
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220 may need to monitor the search space for the activation and deactivation indicators. Concession-free UE 220 decodes DCIs using the assigned concession waiver or group ID for enabling or disabling concession-free transmissions.
[082] Steps 241 and 242 in Figure 2B are the same steps 201 and 202 in Figure 2A.
[083] Step 243 in Figure 2B is similar to step 203 in Figure 2A, except that the RRC signaling in Figure 2B includes a concession-free ID.
[084] Step 244 in Figure 2B includes the UE 220 checking a DCI message including an activation in a search space defined in the RRC signaling, or possibly a combination of the RRC and the signaling system.
[085] In step 245, base station 230 sends a DCI activation message to UE 220.
[086] Steps 246, 247, 248, 249 and 250 in Figure 2B are the same as steps 204, 205, 206, 207 and 208 in Figure 2A.
[087] In step 251 in Figure 2B, base station 230 sends a DCI deactivation message to the UE 220. After deactivation, the UE can release the GF resource and will not be able to perform GF transmission until a reactivation.
[088] Figure 3A illustrates a procedure modality 300 for concession-free UL transmissions that includes using RRC signaling with a group assignment. The RRC signaling assigns a group ID (for example, a group RNTI, which can be denoted as group_RNTI in this document) to a concession-free UE 320. Other UEs in the same group can be given the same group through the respective RRC signaling of the other UEs, because the RRC signaling is specific to the UE. A base station 330 can also signal an EU index or multiple EU indexes between the group for the UE 320 (for example, in RRC). The UE index can be used to derive some information, such as resource, RS, MCS from the UE 320. The UE 320 is configured to fetch a predefined search space from a transmission resource for additional DCI messages that are addressed to a concession-free UE group that is assigned the group ID (group_RNTI). In Figure 3A, the UE 320 may not need to check group DCI before the first transmission. In some
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22/70 modes, the UE 320 can also check group DCI or DCI after RRC configuration.
[089] Steps 301 and 302 in Figure 3A are similar to steps 201 and 202 in Figure 2A.
[090] Step 303 in Figure 3A is similar to step 203 in Figure 2A, except that the RRC signaling in step 303 includes a group ID.
[091] Steps 304, 305, and 306 in Figure 3A are similar to steps 204, 205, and 206 in Figure 2A.
[092] Once base station 330 has detected the data in step 307, base station 330 sends a DCI message that includes an ACK or NACK, as shown in step 308. If the UE 320 receives an ACK, the UE may not perform any retransmission. If the UE 320 receives a NACK, the UE 320 can perform retransmission. Retransmission can be done on the configured concession-free resource. Note that ACK and NACK are some examples of the HARQ return provided by BS for the UE to carry out concession-free transmission. There are other types of HARQ returns and responses from the UE for retransmissions. For example, BS can also provide a HARQ return by sending an UL grant in DCI signaling for retransmission of data transmitted by the UE through concession free transmission. In that case, the UE may follow the UL grant to carry out a retransmission in accordance with the UL grant.
[093] In step 309, the concession-free UE 320 checks for DCI signaling. The concession-free UE 320 checks the predefined search space and uses the group ID to decode the DCIs for additional instructions on resource assignment and other instructions.
[094] In step 310, base station 330 assigns or updates a new transmission resource using DCIs with the identifier group.
[095] When the second batch data transmission arrives at the UE 320, the UE 320 transmits the second batch data in step 311 based on the updated transmission resource from the group DCI. Steps 312 and 313 are similar to steps 307 and 308.
[096] Figure 3B provides an example similar to that in Figure 3A, except that the grant-free resource configuration can include a combination of higher layer and DCI signaling or DCI signaling from
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23/70 group. Steps 341,342, and 343 function like steps 301, 302, and 303 in Figure 3A. The UE may need to receive group DCI or DCI for activation and configuration information before the UE can perform concession-free transmission. In step 344, the UE checks for the group DCI to use the group ID. In step 345, the base station transmits group DCI for additional GF resource assignment and to activate GF transmissions. In step 346, the UE obtains all transmission resources from UL. Steps 347, 348, 349, and 350 function like steps 305, 306, 307, and 308 in Figure 3A. There may also be a deactivation signal sent at step 351 to deactivate the GF transmission. Thereafter, the UE's previously configured GF resource can be released, and the UE can stop additional concession-free transmission until additional activation signaling.
[097] In some modalities, a mode of operation is that for configuring higher layer signaling, the concession-free feature (GF) can also be activated and deactivated by dynamic DCI signaling in some cases. One motivation for disabling DCI is to dynamically and quickly release the GF resource of first type of traffic and used for a second or more other types of traffic in some cases, and later activation will dynamically configure the resource back to the first traffic type as needed.
[098] In other modalities, concession-free switching based on concession (GF2GB) may be scheduled in some cases (for example, emergency use) a second or more other types of traffic to use GF resource configured for first type of traffic . For example, if gNB can be aware of low resource usage or take advantage of knowledge of the first traffic (for example, VoIP) on the GF resource, it can schedule other types of traffic to temporarily use the GF resource of the first type of traffic .
[099] In some modalities, for the semi-static configuration in the first type of traffic for GF transmission, and in some cases (for example, emergency use), eNB can directly schedule a concession for other type (s) of traffic use (use) the GF resource of the first type of traffic (without releasing it) for temporary use.
[0100] In some modalities, for extreme cases where both the
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24/70 GF traffic and concession traffic are overloaded, an admission control on traffic admission can be applied, or the system can budget more resources (for example, increased system bandwidth) to support traffic, temporarily or permanently.
[0101] In the system with the concession-free and concession-based transmissions coexistence, for one UE and / or multiple UEs, one mode of operation is to configure one or more concession-free UEs to listen for DCI signaling in each TTI, or before data transmission and / or in the TTIs during data transmissions, where the scheduler can grant EU (s) that does not waive concession (s) in the region of free concession resource for a temporary use. In this way, the EU (s) that waives the concession (s) can hear the DCI concessions and avoid or reduce collisions with the EU (s) for the use of GF resource. temporary.
[0102] In another mode, GF resource adjustment can be in a semi-static mode and / or based on demand.
[0103] For concession-free transmission, the UE can transmit data according to previously configured parameters autonomously. The UE's GF mode or GF feature can be disabled semi-statically or dynamically, by signaling not linked to DCI (for example, RRC signaling) or DCI signaling. After deactivation, the previous assigned resource will be released, and the UE can resume GF mode after receiving new GF configuration signaling.
[0104] DCI signaling for activation / deactivation and / or feature configuration can be carried by specific EU or common DCI (for example, group DCI or group NR-PDCCH). DCIs for activation / deactivation and / or feature configuration can also carry ACK signaling, that is, common DCI / DCI can both contain both ACK information and deactivation information. The UE can also resume GF transmission after receiving DCI-based activation signal. The UE can use the previous configured GF resource or the configured GF resource in the activation of DCI signal.
[0105] In some embodiments, the network / BS may release the GF resource assigned to a UE if the network / BS has not received GF data from a UE as expected. The network / BS can notify the UE to release the GF resource by
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25/70 RRC or DCI signaling means. The release can be done via a deactivation signal.
[0106] In some modalities, a UE may send a request to the network / BS to resume the allocation of GF resource, through higher layer signaling (for example, RRC signaling) or uplink control channel ( for example, in a scheduling request (SR)).
[0107] In some modalities, the network / BS can pre-assign a timer for the termination of GF resources. The timer can be signaled on higher layer signaling (for example, RRC), broadcast signaling (for example, SIB) or dynamic signaling (for example, DCI). Both the network / BS and UE have the timer information. If no GF transmission from the UE is received after the timer ends, the GF resource can be automatically released. If a GF transmission is received, the timer can be discarded or restarted.
[0108] In other modalities, the / gNB network can release the GF resource assigned to a UE for concession-free transmission, for example, when the network does not receive GF data from the UE for a configurable timeout period. The UE can even send an explicit message to ask the / gNB network to release its previously assigned GF resources, due to some cases such as no low latency traffic, or the load is too saturated, etc. The UE can send a message to the / gNB network to explicitly switch from GF to GB transmissions. The network can release the GF resource from UE and perform any new configurations for the UE using RRC or DCI signaling.
[0109] In another mode, the UE can send a request to the network / gNB to resume the allocation of GF resources through RRC, SR, PRACH, or storage status report (BSR). The GB UE can use its UL PUSCH channel to bring an SR / BSR to the network for the GF resource scheduling / configuration request, where the BSR can be designed and used to indicate, for example, traffic priority / importance level, QoS, mobility status, and / or packet size. The SR / o BSR may include more control information (which is not just for scheduling), such as traffic priority / importance level, QoS, mobility status, and / or packet size, etc. A RACH sequence
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26/70 randomly selected or UE-specific RACH sequence can be used in a PRACH channel for UE scheduling request, where the sequence can be designed for more functionality (than the typical RACH sequence), for example, identifying UE, priority of traffic / importance level, QoS, mobility status, and / or packet size.
[0110] In some modalities, the SR / o BSR used to request to resume GF resource allocation or request new GF resource can be transmitted via a dedicated uplink control channel or a random access channel for SR based transmission in containment. The random access channel can reuse the PRACH channel or be a separate configured channel for SR based on contention. The UE can be configured with a dedicated SR sequence or randomly select an SR sequence from an SR sequence pool for the SR transmission.
[0111] In general, whether or not the GF feature is configured using higher-layer signaling or a combination of higher-layer signaling and DCI signaling, the network / BS may be able to semi-statically (through higher-layer signaling) high) or dynamically enable or disable GF features and transmissions (for example, via DCI or group DCI). GF resources may also be able to be updated semi-statically (for example, through higher layer signaling) or dynamically (for example, through group DCI or DCI). When the GF feature and transmission are disabled, they can be reactivated again.
[0112] Figures 3C to 3F provide example modalities that illustrate different possibilities of activation and deactivation. Figure 3C shows the case where the UE has been configured with all the GF resources needed for the higher layer signaling (for example, RRC) in step 363. Steps 361 and 362 work like steps 301 and 302 in Figure 3A. The concession-free UE can also be dynamically activated or deactivated using group DCI or DCI. In Figure 3C, after obtaining the UL GF transmission facility in step 364, the UE may still be required to wait until it receives an activation signal before the GF transmission. The UE GF can monitor the DCIs after step 364 and the BS / network transmit an activation signal
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27/70 through group DC 1 / DC I. In step 365, the base station transmits the group DCI or DCI to activate the GF transmission. After receiving DCI activation, the UE can perform concession-free transmission on the resource configured in step 366. GF resources can be dynamically disabled. Step 366 may also include the BS sending a HARQ return indicating ACK, NACK, or an UL grant. Step 366 can additionally include retransmission performed by the UE as shown in the figure. The HARQ return and retransmission performed by the UE can be similar to the steps described in Figure 3A. If the UE receives an ACK, the UE may not perform any retransmission. If UE receives a NACK, the UE can carry out retransmission. Retransmission can be done on the configured concession-free resource. BS can also provide a HARQ return by sending a UL grant in DCI signaling for retransmission of data transmitted by the UE through concession free transmission. In that case, the UE may follow the UL grant to carry out a retransmission in accordance with the UL grant.
[0113] In step 367, BS sends group DCI or DCI to disable GF features. In step 368, the UE releases the GF resource and stops the concession-free transmission. Optionally, in step 369, the BS can reactivate the GF feature dynamically. Thereafter, at step 370, the UE can perform concession-free transmission again on previously configured GF resources. Step 370 can be similar to step 366, which includes HARQ return or a UL grant sent by BS and retransmission sent by the UE as in the steps described in Figure 3A. The UE can use the GF resources that have been previously configured or use the GF resources indicated in the activation / reactivation signal or a combination of the two.
[0114] Figure 3D shows a case where the UE was configured with all resources through higher layer signaling. Steps 381, 382, 383, and 384 function like steps 361,362, 363, and 364 in Figure 3C. However, the UE does not need an DCI signal activation before it can perform GF transmission in step 385. The UE can receive a deactivation DCI signal in step 386 and release the GF transmission feature. Steps 387, 388, and 389 function like steps 368, 369, and 370 in Figure 3C.
[0115] Figure 3E shows a resource configuration similar to that of Figure 3C and Figure 3D, but there is no dynamic activation or deactivation of DCI. At
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28/70 steps 391 and 392 work like steps 361 and 362 in Figure 3C. The UE can perform GF transmission on the resource configured in step 393 without receiving an activation signal. Steps 394 and 395 work like steps 384 and 385 in Figure 3D.
[0116] Figure 3F shows a different resource configuration. Steps 3001 and 3002 work like steps 391 and 392 in Figure 3E. The higher layer signaling (RRC) can only provide some information from the GF resource configuration in step 3003. The UE needs to wait for the DCI or group DCI activation signal transmitted from the base station in step 3004. The Group DCI or DCI also provide additional information on GF resource configuration before they can perform concession-free transmission. Steps 3005 and 3006 work like steps 394 and 395 in Figure 3E. The base station can deactivate the GF feature dynamically as in step 3007. Optionally, the BS can reactivate the GF transmission using DCI or group DCI in step 3008. After that, in step 3009, the UE can perform GF transmission using the preconfigured feature or the feature configured in the DCI signal and activation / reactivation or a combination of the two.
[0117] In all cases that support dynamic DCI activation or deactivation, the GF features can be reactivated dynamically using a DCI activation / reactivation signal.
[0118] In some modalities, the / gNB network configures FG resources and access regions for special uses or services, for example, traffic emergency, unexpected low latency traffic, which can be used by any EU (for example, free from grant and / or grant-based) or a group of priority users predefined (for example, embedded in the device) or preconfigured (for example, during initial UE access) such as medical professionals, people who handle urgent events, etc. In addition, the type of urgent or emergency traffic can be predefined or specified by preconfiguration.
[0119] In other modalities, the / gNB network can take advantage of the UE capacity and its QoS requirements to configure or grant emergency GF resources for special uses or services in order to reduce collisions or increase resource spectrum efficiency. For example,
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29/70 network / gNB can monitor all UEs for their QoS requirements and the types of devices to assume the size of a resource region to be configured / granted for urgent services. In another example, if a UE enters the network with reported QoS or specified special services, even though without immediate urgent traffic, but with urgent traffic generation later or quickly, the / gNB network can guide the UE to use the resource region. Emergency FG upon arrival of urgent traffic. In another modality, the / gNB network can pre-configure or grant some UEs with dedicated or shared resources, which can be dynamically activated for use or can be used without any DCI activation, but if no urgent traffic is available for transmission , resources can be skipped by these UEs (like LTE SPS uplinkSkip scheme).
[0120] In other modalities, the GF resource configuration, the eligibility or rule to use the urgent GF resource region, and the specified type of urgent pre-configuration traffic can be done by broadcast signaling, RRC signaling, and / or DCI-related signaling (for example, EU-specific DCI, group common PDCCH, etc.), where priority UEs can be configured at their initial access or any other time by RRC signaling or L1 signaling, which can or you can override your predefined priority status (for example, built into the device) if any. The configuration of urgent GF resources can consider certain robust transmissions required, such as RS, MCS, numbering and repetitions, etc.
[0121] In other modalities, any UE can receive information from the network, including the configuration in the GF resource region for urgent use. If the UE has urgent traffic (as specified by default or configuration pre-signaling) to transmit, it can take advantage of the urgent FG features to transmit its urgent traffic, using the parameters (for example, RS, MCS, numbering, sub- bandwidth, etc.) configured for urgent GF resource access.
[0122] In another modality, the / gNB network can process transmissions in the special GF access region just as or differently from that of regular GF traffic processing, depending on the cases. In some cases, the / gNB network can process transmissions in a special way in terms of
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30/70 fast processing and reaction, etc.
[0123] In some modalities, the GF resource region for urgent use can be configured through broadcast signaling, for example, in the SIB. In this case, the UE may be able to access and carry out GF transmission in this type of GF resource region without requiring a GF resource configuration from unicast or multicast signaling (for example, RRC or DCI signaling).
[0124] In some modalities, the UE may be able to access this type of GF resource region that is configured for urgent use for GF data transmission without first performing an initial access even if the UE is in a state not connected to RRC (for example, idle or inactive).
[0125] In some embodiments, the UE may have been configured GF resource earlier through higher layer signaling or DCI signaling and the UE is waiting for an DCI activation or the GF resource has been disabled or the GF resource has been released by cause of waiting time of the configured GF timer. However, if the UE has some urgent data traffic, the UE may be able to perform GF transmission on a previously configured GF resource without receiving an activation / reactivation signal.
[0126] In another embodiment, GF UEs can be configured and dynamically switched to GB UEs, and switched back to GF UEs again as needed; or vice versa.
[0127] In addition, instead of switching between GF UE status and GB UE status, any GB UE can be dynamically added and configured at any time as having a GF UE status, and any GF UE can be dynamically added and configured. removed from the GF UE status. The configuration can be DCI type signaling (for example, EU-specific DCI, group common DCI), signaling not linked to DCI (broadcast, RRC, multicast), or a combination thereof. Any GF UE can have the configuration similar to that of adding a new status as GB UE as well, and be removed from GB UE status. In addition, any UE with both GF and GB UE status, either access status can be removed, for example, to remove GF UE status, or to remove GB UE status, and signaling made changes in EU status may be necessary.
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31/70 [0128] Modalities of the present disclosure provide additional features for the cluster of UEs described above. Figure 4 illustrates a set of 400 time and frequency domain resources available to a plurality of UEs in a cell's coverage area. In the exemplary embodiment of Figure 4, 20 UEs are shown, but other numbers of UEs could be present. In the embodiment of Figure 4, four successive time divisions 402 are shown as an example of a sequence of time divisions. The time divisions 402, the time units or time intervals described in this document can be a subframe, a TTI, a mini-division, a division, a frame, or in general any time interval. Figure 4 can also apply to the case where time divisions 402 are not successive or continuous. The interval between two time divisions 402 can be signaled by the concession / periodicity free access interval described above. In one embodiment, in a given time division 402, the UEs are grouped into a plurality of frequency sub-bands 404, so that each UE is in one of the 406 groups. Thus, any group 406 consists of a certain number of UEs that share the same time division 402 and the same subband 404, and thus the UEs in a group 406 share the same resource block. In other modalities, UEs in a group, for example, group 406, may only share the same time unit and sub-band, but may not share the same resource block. In the illustrated embodiment, the available frequency bandwidth is divided into five sub-bands 404, but in other embodiments, the available frequency bandwidth can be divided into a different number of sub-bands. The size of a subband 404 may be equal to the size of a free grant resource 406 in the frequency domain. Alternatively, the size of a subband 404 may be larger than the size of a free grant resource 406 in the frequency domain. In the illustrated modality, there are four UEs in each group 406, but in other modalities, other numbers of UEs can be present in each group 406. The groups 406 of time and frequency resources can have equal sizes or different sizes. The numbers illustrated in groups 406 represent indices for the UEs in a group 406. For example, the four UEs in the group 406a have indices 1, 6, 11, and 16. Henceforth, the UEs in a group 406
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32/70 can be referred to by their indexes, so that the UEs in group 406a can be referred to as UE1, UE6, UE11, and UE16, the UEs in group 406b can be referred to as UE2, UE7, UE12, and UE17, and so on.
[0129] In one embodiment, the likelihood of a collision between two or more UEs is reduced by moving the subband 404 to which a UE is assigned in a subsequent time slot 402. In one embodiment, the amount of displacement may be different for each of the UEs in a group 406. Using the UEs in group 406a as an example, UE1, which is in subband 404a in time division 402a, is displaced by a subband 404 for subband 404b in time division 402b and thus is in group 406g in time division 402b. UE6, which is in sub-band 404a in time division 402a, is shifted by two sub-bands 404 to sub-band 404c in time division 402b and thus is in group 406h in time division 402b. UE11, which is in sub-band 404a in time division 402a, is shifted by three sub-bands 404 to sub-band 404d in time division 402b and thus is in group 406i in time division 402b. UE16, which is in sub-band 404a in time division 402a, is shifted by four sub-bands 404 to sub-band 404e in time division 402b and thus is in group 406j in time division 402b. Similar displacements can be seen in the other UEs in the other 406 groups. In other modalities, as will be described in more detail below, the displacement of UEs to other 406 groups can occur in other ways.
[0130] The subband shift described above can be referred to as a resource hop pattern, and a shift pattern can be referred to as a resource hop pattern. RRC or DCI signaling or a combination of RRC signaling and DCI signaling can be used to define the feature hop pattern for members of a 406 group and can also designate how many members of a 406 group use the same pattern . An access interval can also be defined to specify how many times the resources are located in the time domain, for example, each TTI, every two TTIs or some other interval. System information can specify the number of 404 subbands present and the number of resource blocks in each 404 subband. For example, if one of groups 406 is allocated with five resource blocks, that group 406 may be given a
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33/70 five resource block index. An entire 404 subband or just a portion of a 404 subband can be used.
[0131] In the configuration of one of the UEs in Figure 4, the number of resource blocks assigned to the UE can be said for the UE. The UE can also be configured with a hop pattern. The UE can additionally be configured with a reference signal index and a total number of available reference signals. In some embodiments, the total number of available reference signals is predefined and known to both the base station and the UEs. The reference signals can be configured so that the reference signals do not collide with each other. That is, if two UEs are configured on the same resource, the UEs may need to use different reference signals.
[0132] In one embodiment, the probability of a collision between two or more UEs is further reduced by introducing permutations in the positions of the UEs in groups 406 when an UE moves to a different subband 404 in a different time division 402 For example, UE1 appears at the top of group 406a in time division 402a. When UE1 moves to group 406g in time division 402b, UE1 can appear in the second, third, or fourth position in group 406g and not in the first position as shown.
[0133] In another mode, instead of or in addition to the UE1, UE6, UE11, and UE16 grouping, for example, in the 406a group, UEs can be grouped across different 404 sub-bands in a given time slot 402. Such groups for UEs can be assigned to share several parameters. For example, UE1, UE2, UE3, UE4, and UE5 can be grouped together and can be assigned to share a reference signal and share the same MCS. Such UEs would have different locations in frequency but may have the same cyclical displacement and thus share the same hopping pattern. A group of UEs like this can be flagged to tell UEs how their resources will be configured.
[0134] Note that throughout the text of this disclosure, the terminology “EU ID” may, however, represent, without limitation, an RNTI, a GF-RNTI or a CRNTI or a higher layer ID or an index of UE within a group (for example, the UE index among the group flagged in RRC for group_RNTI) or a group ID or group_RNTI or any index for
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34/70 identify the UE.
[0135] The resource jump pattern can be signaled by a combination of a VRB index field or PRB index assignment and jump parameters. In some modalities, the minimum resource allocation for waiver of concession can be signaled in terms of group index VRB or PRB, which consists of a number of predefined resource blocks. The VRB, PRB, VRB group, or PRB group index can be indicated by the initial and / or final index of RB or RB group and the number of RBs or the number of RB groups. The time-frequency resource jump parameters can be represented by the number of resource blocks or the number of sub-bands that are cyclically shifted from the VRBs or PRBs assigned in each time division within a concession-free frame. The concession-free frame can have as a standard length, the frame length used in LTE or new radio (NR), that is, the concession-free frame can be the frame used in existing and future cellular standard (such as LTE and 5G NR). The GF frame length, which is the periodicity of the hop pattern, can also be specifically flagged or set for concession-free transmission (as discussed with respect to RRC signaling). The UE and the base station can then derive the PRB indices assigned in the time division index i, frame index j as
Equation 1
PRB '(i, j) = (f (n _VRB ) + g (i) + f (j) + other terms) mod (N _RB )
Equation 2
PRB '(i, j) = (PRB ₀ + g (i) + f (j) + other terms) mod (N _RB ) where the actual physical resource blocks PRB (i, j) = f' (PRB '( i, j) and f'Ç) is a predefined mapping function known to both the base station and the UEs. The time divisions described in this document can be a subframe, a TTI, a mini-division, a division, a half division, a frame, an OFDM symbol, several OFDM symbols, or the interval between two free resources, or in general any time interval as previously described. Therefore, the time division index ie division index i described in this disclosure can be a frame sub index, a division index, a TTI index, a mini division index, an OFDM symbol index, an index of a half division, one
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35/70 frame index, a concession-free resource index, an transmission occasion index or concession-free transmission opportunities, a repetition number index or an index that is a function of a combination of the above indices. In some modalities, the jump pattern is repeated for each frame, and the time division index can be defined within each frame. For example, if only frequency hopping between divisions (that is, frequency hopping between different partitions) is supported and hopping within a split (frequency hopping between first partition and second partition of a division) is not supported, the division index of time i can be just the division index within a frame. On the other hand, if jumping both within division and between divisions is enabled, the time division index i can be the index of a half division in a frame, for example, the index i can be 2 x n_s + x, where n_s is the division index, ex = 0 or 1 where 0 represents the first partition in the division and 1 represents the second partition in the division. In another example, the time division index i can be the index representing the number of repetitions. For example, a UE can be configured to perform K repetitions for each transport block (TB). The first transmission of the TB repetition corresponds to the index i = 0, the second repetitions of transmission of the TB correspond to the index i = 1, ..., and the K-th repetition corresponds to the index i = K-1. In another example, there can be multiple repetitions per division. For example, N _rep represents the number of repetitions per division. Then, the index i can be i = N _rep xn_s + x, where x = 0, 1, ..., N _rep -1 is the repetition index within a division and n_s is the division index. The above description of the time division index i can be applied to all the jump descriptions revealed in that disclosure, including the subscript i used for g (i), f _hop (i ~), etc. n _VRB is a virtual RB index or in general a VRB group index. f (n _VRB ) is a predefined mapping function from assigned virtual RBs (signaled at higher layer signaling (for example, RRC signaling) or DCI) to the RBs used to calculate PRBs or PRBs for a division or division of time in particular (for example, in time division i = 0, frame index j = 0). PRBq is an initial PRB index, which can also be signaled in RRC or DCI signaling. The predefined mapping function can be cell specific and known to the base station and all UEs. a
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36/70 example of such a predefined function is given in Equation 3 and Equation 4 in the example given below. g (i) is a sequence representing the number of RBs to be cyclically displaced with respect to the assigned resource blocks (VRBs or f (n _VRB ) or PRB ₀ ) indexed by the time division index i. The definition of g (i) may only be necessary for the index i within a free concession frame, after which the value of g (i) will repeat, that is, 0 <= i <= l- 1, where I is the total number of time divisions within a concession-free framework. N _RB is the total number of RBs assigned for concession-free transmission, which is used for cyclical displacement so that no PRB is outside the assigned N _RB resource blocks. ON _RB can be predefined, derived, or signaled using broadcast signaling (for example, SIB system information) or higher layer signaling (EU-specific or cell-specific RRC signaling) or dynamic signaling. f (f) is a function of the frame index j known to both the base station and the UEs. The term f (j) is optional and may or may not exist (for example, / (/) = 0). The existence of f (j) means that the jump pattern can change in the frames. In one example, / (/) = jx N _RB mod M, where N _RB is the number of RBs in the subband and M is the number of frames in which the skip pattern will be repeated. The other terms can be a constant, can be related to other parameters, for example, a mirroring pattern, and can also be optional (that is, it can be 0).
[0136] In some embodiments, g (i) can be explicitly or implicitly signaled, for example, in higher layer signaling (for example, by means of RRC signaling) or DCI signaling. In some embodiments, the sequence of the number of cyclically displaced RBs can be changed or represented by the sequence of the number of sub-bands to be cyclically displaced. For example, g (i) can be derived from:
5 (0 = Âop (0 x Nrb where f _hop (i) is the jump sequence representing the subband index to which the UE jumps on the time division index i.
[0137] This reduces signaling overhead because g (i) can take values between 0 and N _RB - 1 and f _hO p (i) can only take values between 0 and N _sb - 1, where N _sb is the number of sub -bands. So the physical resource block can be
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37/70 derivative based on:
PRB ’(i, f) = (f (n
VRB) + ÂopCO ^X + / (/) + other terms) mod (N _RB ) or
PRB '(i, j) = (PRB ₀ + fh _O p (i) x Nrb + f (f) + other terms') mod (N _RB ) [0138] The number of N _RR is the number of RBs in each sub-band and can be preset or flagged. For example, it can be signaled in higher layer signaling (for example, in RRC signaling) or broadcast signaling (for example, in the SIB). f _hop (i) represents the number of sub-bands by which the resource hop pattern will be cyclically shifted or the sub-band index to which the resource will jump as a time division index function i. / _ftop (i) may only need to be set between 0 and N _sb - 1, where N _sb is the free number of predefined or signaled sub-bands (in higher layer signaling (for example, RRC), broadcast signaling (e.g., SIB) or DCI). In some embodiments, the sequence f _hop (i), that is, the subband index in a different time division, is explicitly or implicitly signaled, for example, using higher layer signaling (for example, RRC signaling ) or dynamic signaling (for example, DCI).
[0139] In some embodiments, / _ftop (i) or g (i) can be computed and / or signaled as a pseudo-random sequence as a function of i. In some embodiments, the pseudo-random sequence c (i) represents the number of sub-bands or resources moved from one division to the adjacent division, that is, f _hO p (i) - fhopCi ~ 1) ^or # (0 ^_ g (i ~ 1) · In this case, for a given initial value, fhOp (i), g (i) θ also a pseudo-random sequence as a function of i. For example, as also described in an example later in this fhop ( í) = fhop (i ~ 1) + ^c (0> where / ftop (-l) = 0 and c (i) is a pseudo-random sequence. The pseudo-random sequence can be UE specific so that different UEs can have different patterns of jump to avoid persistent collisions.The pseudo-random sequence can be generated using a EU ID function or a combination of EU ID and cell ID as a seed or initialized using a EU ID function or a combination of EU ID and Cell ID The UE ID can be the GF-RNTI or CRNTI or a higher layer ID or a UE index within a group (for example, the EU index among the group signaled in RRC for
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38/70 group_RNTI) or a group or group_RNTI ID or an EU index or an EU hop index that is used to derive the specific EU hop pattern. In that case, / _ftop (i) or g (i) may not need to be explicitly flagged, and may instead be derived from the pseudo-random sequence. The base station may only need to indicate explicitly or implicitly that the skip sequence is generated using the pseudo-random sequence. In some modalities, if the jump pattern is repeated for each frame as previously described, the pseudo-random sequence can also be reset in each frame.
[0140] In some modalities, / _ftop (i) or g (i) can be signaled as a function of the division index i, based, for example, on / _ftop (i) = Âop (O) + (mx ( range index i)) mod N _sb , or / ko _P (0 ⁼ (/ λορ (θ) + (mx (range index i)) mod N _sb , or g (i) = g (0) + (m ₀ X (range index i)) mod N _sb , where m is the number of sub-bands to be cyclically shifted from one division to the next division, at ₀ is the number of RBs to be cyclically shifted from one division to the next Equally, m can be defined as m = f _hop (i) ~ fhopd ~ 1) · The term / kop (O) ^and Ζ / (θ) are the value of the jump sequence in the index time division 0. They are optional and can be standardized to some value (for example, standard at 0.) They can be explicitly flagged or derived based on other parameters. For example, they can be flagged via semi-static flagging (for example, higher layer signaling such as RRC signaling) or signaling dynamic use (for example, through DCI signaling). When / k _op (0) and g (0)) are not present or have a default value, in this case, only a single value (instead of a string as a function of i) mem _Q may need to be flagged, mem ₀ may be flagged. In other words, the BS can signal the cyclic displacement value m or m ₀ and optionally the initial subband or index RB to the UE by means of semi-static signaling (for example, RRC signaling) or dynamic signaling (DCI). Signage can be EU specific. In this case, resource block assignments in different time frames can be derived based on:
PRB '(i, j) = (f (n _VRB ) + mxix Nf _R + f (f) + other terms') mod (N _RB )
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39/70 or
PRB '(i, j) = (f (n _VRB ) + m ₀ xi + f (j) + other terms) mod (N _RB ) or
PRB '(i, j) = (f (n _VRB ) + g (0) + m X i XN _RB + f (j) + other terms') mod (N _RB ) or
PRB '(i, j) = (f (n _yRB ) + / k _O p (0) + m ₀ X i + f (j) + other terms') mod (N _RB ) f (n _VRB ) can be changed PRB PRB _Q index.
[0141] The UE can be configured to perform up to K repetitions for exemption from concession or transmission based on concession of one TB. In some embodiments, the time division index i or division index i may be the repetition index (0 <= i <= K-1) or the concession-free transmission occasion index. In this case, the jump between divisions described above can also achieve the jump between repetitions effect. The advantage of this jump between repetitions is to explore the frequency diversity between repetitions as well as to prevent multiple UEs from colliding persistently during repetitions. In this case, m is the number of sub-bands cyclically displaced between two adjacent repetitions or two adjacent grant waiver occasions at ₀ is the number of resource blocks (RBs) displaced between two adjacent repetitions or two grant waiver occasions. adjacent concession, m or m ₀ can be signaled to the UE using semi-static signaling (for example, RRC signaling) or dynamic signaling (for example, DCI). / _ftop (0) and g (0) are the initial subband index or RB displacement index for the first TB transmission repeat, which can be optionally or signaled by the UE in RRC or DCI signaling or can be default to a fixed value (eg 0) without signaling.
[0142] Mem ₀ based signaling provides a subset of possible jump patterns compared to the / k _op (0) sequence signaling, which additionally saves signaling overhead. The resource jump patterns of 20 UEs in the example in Figure 4 can all be signaled using mem ₀ .
[0143] In some embodiments, / _ftop (i), g (i), m or m _Q can be a function of a type of EU ID. The EU ID can be the GF-RNTI or C_RNTI or an ID
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40/70 higher tier or a UE index within a group (for example, the UE index among the group flagged in RRC for group_RNTI) or a group ID or group_RNTI or a UE index used to determine the location and resource jump pattern / RS (for example, in Figure 4, the UE index in the figure can be an index that is used to derive the resource and the resource jump pattern, and it can be signaled by the BS in signaling higher layer, DCI signaling or broadcast signaling). The function can be known by both the base station and the UE. In that case, / _ftop (i), g (i), m or m ₀ may not need to be explicitly flagged and the UE may derive m or m ₀ from the UE ID. In some embodiments, m can be derived as (EUID + constant) mod N _sb . For example, in Figure 4, it is assumed that UE1, UE6, UE11, and UE16 are being configured with the same group ID and each one being set up an index of UE within the group as 1, 2, 3, and 4 , respectively. So based on m = (UE ID + constant) mod N _sb , assuming that the constant = 0, and N _sb = 5 in Figure 4, then the system would have m = 1,2, 3, 4 respectively for UE1, UE6, UE11, and UE16. This means that UE1, UE6, UE11, and UE16 will cyclically skip 1, 2, 3, 4 sub-bands from one time slot to the next time slot, which is the same skip rule defined in Figure 4. In this example , the EU ID is the EU index among the group where the group of UEs share the subband index in time division 0. In some embodiments, the group ID and the EU index within the group can be derived from of a single UE index assigned to jump pattern derivation which is signaled in RRC or DCI signaling. In some embodiments, the initial subband index (for example, / _ftop (0) or g (0), and the cyclic offset value (for example, m or m _Q ) can be derived from a single index UE assigned for jump pattern derivation which is signaled in RRC or DCI signaling.
[0144] In some embodiments, a UE can be assigned a UE ID, which is the UE index used to calculate the resource jump pattern. The UE index can be signaled in RRC or DCI signaling. For example, this UE index can be equal to the numbers shown in Figure 4. Each UE can calculate the _hop sequence pattern (f _hop P) as a function
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41/70 of the assigned EU index. The sequence can be calculated as follows, fhopíí) = fho _P (0) + m'xi or, fhoptí) = (f _hop (0) + m'xi) mod N _sb , where f _hop (0) is the index subband in time division 0; m 'is the cyclic shift of sub-bands from one division to the next division (that is, equal to the m described above). In some modalities, / _ftop (0) and m 'can be explicitly flagged. In some embodiments, they are derived from some UE IDs based, for example, on f _hop (0) = (UE ID + Cl ^ mod N _sb in '= ^{UEID + C2} + C3, where C1, C2, and C3 are and are common to all UEs in the same frame and in the same cell. If C1 = C2 = -1, C3 = 1, the hop pattern obtained from f _hop (í) = f / iop (0 ) + m 'xi, or f _hop (i) = (fhop (O) + m' xi) mod N _sb will be equal to the jump rule defined in Figure 4 (assuming that the EU ID is an integer shown in the figure) In some embodiments, / _ftop (0) can be derived as a function of the group ID, and 'is derived as a function of the EU index between the group. For example, if groups 406a, 406b, .. ., and 406 and a group ID like 0, 1, 2, 3, 4, and the UE index is assigned based on the order of numbers shown in the figure, so if the system has / k _op (0) = (group ID) mod N _sb and m '= UE index among the group, the UE can also derive the same jump rule as shown in Figure 4. In both cases, R S can be explicitly configured or derived as a function of the EU ID, for example, RS is equal to m 'or a function of m', which is a function of the EU ID, or RS = [ ^UE ^ ° ^{+ C2} j + C3. In this case, there will be no RS collision on the same resources.
[0145] In some modalities, the RS parameters are derived from the signaled cyclic displacement value m ', for example, RS = (m' + C4) mod N _rs , where N _RS is the total number of RS index and C4 is a constant. In some other modalities, the RS parameters are explicitly signaled in semi-static (for example, RRC) or dynamic (for example, DCI) signaling. Some or all of the jump pattern / parameters or jump sequence can be derived from the RS parameters. For example, the EU-specific RRC signaling can indicate the RS parameters (for example, an RS index) and optionally the initial subband index, while the cyclic displacement value m or m 'can be derived
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42/70 using the assigned RS parameters, for example, m '= (RS Index + CS) mod N _sb , where C5 is an integer. An example of an RS index is the cyclical displacement index and OCC used in LTE.
[0146] In some embodiments, when the CTU size is predefined or fixed, the VRB index in Equation 1 can be exchanged for a CTU index in a particular time division (for example, CTU_0 representing CTU index in the time division 0 and table 0). The PRB index derived in Equation 1 can be exchanged for the CTU index in the time division index i and in the frame index j. In some embodiments, CTU_0 can be explicitly or implicitly flagged. In some embodiments, CTU_0 can be derived from a EU ID or group ID (for example, GF-RNTI, C-RNTI or group_RNTI) based, for example, on CTU_0 = group_RNTI mod (number of CTUs in one time division).
[0147] In some modalities, when the CTU size is fixed or known to the UE, the VRB index may not need to be explicitly flagged. For example, if the number of RBs in a CTU is fixed at 5, then n _VRB can be standardized on the VRB index {0,1,2,3,4} as if the VRB index {0,1,2,3, 4} are flagged.
[0148] In some embodiments, the RS index used for a UE can be set for a UE and can be explicitly flagged. In one embodiment, the reference signal used by a UE when the UE jumps to a different subband in a subsequent transmission changes in relation to the reference signal used in a previous transmission. The hop pattern can be a function of locations in time and can be cell specific (or common for UEs in the same cell). Thus, if a fixed RS assignment does not result in an RS collision, the skipped assignment also does not result in any RS collision. In one embodiment, the reference signal used in a subsequent transmission is given by the equation
RS (i, j) = RS ₀ + (range index i) + (frame index j) modN _RS where RS (i, j) is the reference signal used in a subsequent transmission, RS ₀ is the reference signal used in a particular division (for example, division index 0 and frame index 0), and N _RS is the total number of assigned reference signals. In another example, the division index i and the frame index j can be exchanged as a pseudo-random sequence
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43/70 as an i function and the sequence can be initialized using a cell ID. RS ₀ can be explicitly signaled, for example, in group DCI or DCI or RRC signaling. In some embodiments, RS ₀ can also be implicitly derived as a function of UE ID, where the UE ID can be the GF-RNTI or C-RNTI or a higher layer ID or a UE index within a group (for example, the EU index among the group flagged in RRC for group_RNTI) or a group ID or group_RNTI. All of the RS index signaling methods described in this disclosure may be applicable or may be generalized for assigning an MA signature.
[0149] In some modalities, the resource jump pattern / _ftop (i) can be derived from a pseudo-random sequence. However, instead of being based on an EU-specific pseudo-random sequence, the pseudo-random sequence can be group specific. In some embodiments, instead of considering UEs sharing the same resource as a group, UEs can be grouped based on the reuse of the same RS signal. These UEs may not be broadcasting on the same resources at the same time. Each group can share the same group ID and UEs within a group can have a different UE index between the group. The group ID and the UE index can be explicitly flagged, for example, in RRC signaling, or implicitly calculated (for example, calculated as a function of a single EU ID that can be flagged for the UE). For example, in Figure 4, UE 1, UE2, UE3, UE4, and UE 5 can be those in a group with a group ID = 0, UE 6, UE7, UE8, UE9, and UE10 belongs to another group with a group ID = 1, ... etc. The EU index can be determined from the lowest number to the highest number in the same group. The sizes of resources that UEs access within the same group can be different, which is not shown in the figure, but UEs can share some properties, for example, the same subband index in a division. The hop / _{ftop pattern} (i) can be computed as follows: each UE group can perform a pseudo-random permutation in each time division and mapped to the sub-band one by one based on the permutation pattern. For example, if the permutation pattern is {5,1,2,3,4} in a time division, the hop pattern can be equal to time division 402b in Figure 4 for UE1, UE2, UE3, UE4, and UE5. THE
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44/70 pseudo-random permutation is the same for all UEs within a group, but may be different for UEs in different groups. This can be done using a pseudo-random sequence to represent different permutation patterns. For example, there are N _sb ! different permutation patterns are possible, so a pseudo-random sequence can be generated to take an integer value uniformly at random from 0 to N _sb -1, which represents all possible permutation patterns. There are many different ways to generate a pseudo-random sequence. An example of pseudo-random sequence generation can be found in clause 7.2 in 3GPPTS 36.213. The pseudo-random sequence can be generated using a seed or initialized as a group ID function. Therefore, UEs from the same group will have the same permutation pattern. After determining the permutation pattern based on the pseudo-random number initialized as a group ID function, the UE can determine the subband location of the hop pattern / k _op (i) based on the UE index among the group and the permutation pattern. The RS can be explicitly flagged or implicitly derived. In some embodiments, RS can be derived as a function of group ID based, for example, on RS = (group ID + common term) mod (total number of RSs). The common term is optional and means a term that is the same for all UEs in the same cell, for example, it can be a function of frame index, time division index, etc. If the group ID is defined to be continuous integers and there are fewer groups than the RS index number, then there will be no RS collisions. In some embodiments, the group ID and the EU index from the group ID can be derived from a single EU ID. The UE ID can be flagged for each UE for resource configuration (for example, in RRC or DCI). The UE ID can be a GF-RNTI, C-RNTI, a higher layer ID, an UE index for calculating GF resources as shown in Figure 4, etc. For example, if the EU ID is the EU index shown in Figure 4, the group ID and the EU index within the group can be derived as / £) from group = [ ^EU ^ ° ^{+ C2} j + C3 and UE index among the group = (UE ID + Cl) modN _sb , if C1 = C2 = -1, C3 = 0 is considered; in Figure 4, one can obtain UE1, UE2, UE3, UE4, UE5 in the same group with group ID = 0 with EU index 0,1,2,3,4 respectively.
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UE6, UE7, ..., UE10 belong to a group with group ID = 1. In this way, the hop pattern / k _op (i) and RS can be derived from a single UE ID without any other signaling and UEs in the group can reuse the same RS. UEs that belong to the same group can also be configured using group signaling, for example, group DCI, in which case the group ID and the UE index between groups can be configured, for example, in RRC signaling . UEs can share the RS, VRB index, which can be signaled in group DCI. The jump pattern of UEs within a group is different, which alternatively can be generated using the random permutation method above. In some other modalities, the hop pattern can be explicitly or implicitly signaled or by means of Âop (0)) θ m 'ef _hop (i) = fhop (O) + m'xi or f _hop (i) = ( f _hop (0) + m'xi) mod N _sb , where / k _O p (0) is a function of EU index among the group (for example, / kop (O) ⁼ (UE index among the group) mod N _sb and m 'is a function of the group ID (for example, ηϊ = (group ID + C) mod N _sb .
[0150] In some modalities, the hop pattern can be derived using the signaled RS parameters, for example, using signaled RS index in semi-static (for example, RRC signaling) or dynamic (for example, DCI signaling) signaling . The jump sequence (for example, / kop (O) can be derived using a pseudo-random function initialized by at least the signaled RS parameters. For example, the jump sequence can be a pseudo random function with seeds as a function of the RS parameters Initialization can also depend on other parameters, for example, a UE ID and / or cell ID, in addition to the RS parameters.
[0151] In some modalities, there may be a predefined rule table (for example, as in Figure 4) to map an EU index to the jump pattern. The rule table may be known to both BS and UEs. The UE can derive the hop pattern based on the mapping between UE index and feature hop pattern and / or RS / RS hop pattern. The UE index can be signaled (for example, in RRC or DCI) or is predefined / known to the UE.
[0152] In some modalities, the resource can be configured / partially configured or updated by group signaling or
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46/70 multicast, for example, through group DCI, as in the examples shown in Figure 3A and Figure 3B. Throughout this disclosure, group DCI can also refer to common DCI, common group DCI or a common group PDCCH, a common group NR-PDCCH, DCI for a group of UEs, or just a link control channel descendant targeting a group of UEs. The resource can also be configured in some other slow (non-dynamic) type of multicast signaling, for example, an RRC group (RRC targeting an UE group). In some embodiments, the group of UEs can be associated with the same resource in a given subframe. For example, UE1, UE6, UE11, and UE16 can share resource 406a. In some embodiments, the group of UEs can be associated with all potential UEs that access the FG resource in a time split. A common group ID (for example, group_RNTI) and a specific EU index of UE among the group can be flagged for the group of UEs, for example, in RRC signaling. The UE index may be different for different UEs in the same group. When sending group DCI, the group ID (or group_RNTI) is used to define the search space for the DCI and CRC signal is scrambled using group_RNTI. In some modalities, the search space for common group DCIs can be in a common search space. A UE can use the group_RNTI to decode the CRC and knows that the group DCIs are targeting the group to which the UE belongs. A common VRB index or PRB index (PRB ₀ ), a common value MCS, new data indicator (NDI), and redundancy version (RV) etc. can be flagged for the UE group. in group DCI. However, the hop pattern and RS value of a UE may be different for different UEs in the group, and the hop pattern can be associated with the UE index of the group, which may have been previously configured in the RRC signaling. In a more particular example, the value m may be a function of the group's EU index, for example, = (EU index between the group) mod N _sb oum = (EU index between the group + constant) mod N _sb . In another example, group signaling can explicitly signal / k _op (0) and jump parameters m 'can be derived as a function of the group's EU index, for example, m' = (EU index between the group) mod N _sb ef _hop (i) = fnop (O) + m ' ^x ί · / λορ (θ) Ρθύθ also be possibly unsigned and take a value
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47/70 standard, the default value can be 0. In this case, the hop pattern does not need to be explicitly flagged for each UE in the group. The RS value can also be associated with the EU index between the group. For example, RS can be derived as a function of the UE index between the group, so that different UEs in the same group can use different RSs, for example, RS index = (configured RS index + EU index) mod ( total number of RS index) or index of RS = (EU index) mod (total number of RS index). The configured RS index can be optional. In some modalities, for resource update or configuration / reconfiguration using group DCI, the hop pattern can be derived using the pseudo-random sequence initialized by at least one UE ID, RS parameters, cell ID, or any combination of themselves.
[0153] In some embodiments, the group_RNTI and the EU index among the group configured in RRC signaling can also be used for group ACK / NACK, resource update / MCS via group DCI. Group DCIs can be a common group NR-PDCCH. The group_RNTI and UE index used for group ACK / NACK, MCS update, and resource update can be the same or different from the group RNTI and UE index configured for GF resource configuration.
[0154] As an example of using Equation 1, the number of resource blocks, N _RB , can be 25, the PRB index can range from 0 to 24, the periodicity can be 2, (that is, there can be two divisions time per opportunity of access), and a frame can be 10 milliseconds. In addition, back to Figure 4, subband 404a can have a PRB index of 0 to 4, subband 404b can have a PRB index of 5 to 9, subband 404c can have a PRB index of 10 to 14, subband 404d may have a PRB index of 15 to 19, and subband 404e may have a PRB index of 20 to 24. UE14, as an example, is in group 406d in the time division 402a and thus has a PRB index of 15 to 19 in time division 402a. If the UE14 has been given a cyclic offset value of m = 3 and the number of resource blocks per subband is N _RB = 5, UE14 will move by 3 multiplied by 5 from one division to the next division, thus UE14 will have a 15 cycle shift from one division to the next division. That is, the EU-specific cyclical shift value for
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48/70
UE14 is m ₀ = 15 = (3 * 5). Thus, in time division 402d, the PRB index for UE14 becomes (15 + 15 * 3 + 0) mod (25), which is equal to 10. Thus in time division 402d, which is a cyclic shift of 3 with respect to time division 402a, UE14 will have a PRB index of 10 to 14 and will therefore use subband 404c and be in group 406r.
[0155] A resource jump pattern can be defined by assigning VRB or PRB in a time division and by a resource jump parameter. In one embodiment, the resource jump parameter is explicitly signaled by the base station. In another mode, the resource jump parameter is indicated by the specific subband index in a different time unit. In another mode, the resource jump parameter is configured using a cyclic offset value with respect to the time unit and optionally the initial subband index. In another mode, the resource jump parameter is indicated by the subband index derived from a pseudo-random sequence. The pseudo-random sequence can be UE specific. For example, the pseudo-random sequence can be initialized as a function of UE ID. The pseudo-random sequence can also include a cell ID. The pseudo-random sequence can also be initialized as an RS index function. The following is a detailed example of configuring and deriving a resource jump pattern from an assigned VRB index and jump sequence. However, the effective equations / rules for the resource jump pattern can be varied.
[0156] If uplink frequency hopping with a predefined hop pattern is enabled, the physical resource block set to be used for transmission in the division _'s is given by the VRB assignments in DCI or RRC signaling along with a predefined or flagged pattern according to the following equations.
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49/70 «PRB (« s) = («VRB + / hop (0 · + Í (Ár'b“ 1) “^« VRB m ° d ^ RB)) '/ m (0) mod (# ^ · 7V _sb ) | _ / 7 _s / 2J jump between subframes n _s jump within subframes and between subframes «prb (« _s ) = «PRB L« s) «ρκβΑ) + (<β7 ² 1
Λ% = 1
Λ%> 1 ^ VRB
VRB
VRB
-Dc ^o / M where «vrb θ obtained from the resource block assignment explicitly signaled in the DCI or RRC signaling. The parameter puschHoppingOffset,, is provided by higher layers, / Vrb is a virtual resource block assignment, fhop (i) designates which subband to jump to. The random strings are initialized above with a UE ID function in order to make the UE specific jump. In some embodiments only the UE ID is used, and in some embodiments the UE ID is used in conjunction with the cell ID. The f '() and f () mapping function used in this example is given by
Equation 3 «prb (« s) ^-
N _sb > (
Equation 4
[0157] In the example, the size of each subband is given by “Lte-C ° -C ° mod2)> _sb
- _sb = i
- _sb > i [0158] The number of subbands Á _sb is given by higher layers. The function / _m (z) and {o, l} determines whether mirroring is used or not. Mirror pattern terms can be optional. The Hopping-mode parameter provided by higher layers determines whether the jump is between subframes or within and between subframes.
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50/70 [0159] The hop / _{hop function} (0 and the / _m (0 function are given by
AV = I / -10 + 9 (Áopú-1) + Ec (Ux ^{2Mn0 + 1,} ) mo ^d / V _sb Μ „= 2 k = / - 10 + 1 / / -10 + 9 λ (/ hop (/ -1) + Σ ^{x 2M, '10 + 1) mod} (^ sh -1) +1) mod N _sb N _sb <£ = / • 10 + 1 7 z mod 2 / _m (/) = {CURRENT TX NB mod 2 c (z 10)
N _sb = 1 and jump within and between subframes
N _sb = 1 and jump between subframes ^ _sb > l / hopH) = ° θ ^the pseudo-random sequence _{c (/} ) are given by the clause
7.2 in 3GPP TS 36.213. CURRENT TX NB indicates the transmission number for the transport block transmitted in the division _'s . The pseudo-random sequence generator can be initialized with c _init = f (N ^ ¹ , UE _ID), or c _nit = / «*) [0160] In the example, fhop (i) can also be explicitly flagged with or flag a value m where f _hop (i) = (mx ijmod N _sb , or f _hop Çi) = (τη xi) mod N _sb + / _ftop (0) or f _hop (i) = ((mxi + f _hop W) mod N _sb .
[0161] In some modalities, there may be a single jump field pattern in the signaling, where some field value is referring to a jump sequence generated using an EU-specific or group-specific pseudo-random sequence. Some other values may represent explicit signaling of the hop pattern. For example, it can explicitly flag m or A _op (0) and m '.
[0162] It should be noted, however, that the entire methodology for configuration, derivation and signaling of the jump pattern is described based on jumping by different frequency, for example, in a different band or sub-band. The same methodology / mechanism / signaling can be applicable to a jump over resources in a different time division or a resource jump in a combination of different frequency bands and different time divisions. A subband described in this disclosure can represent any frequency partitions, such as a subband, a carrier, a subcarrier, a bandwidth portion, a resource block or a resource block group, a number of subcarriers, a number of resource blocks, and a group of
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51/70 resource block.
[0163] A base station can send signal to a concession-free UE indicating the time and frequency resources that the UE should use in concession-free uplink transmissions. In one embodiment, signaling includes a resource block index (PRB index of EU-specific free concession resources in time division 0 and frame 0 or VRB index), for example. The resource block index can specify the beginning and end of a resource block, or it can specify the beginning and the number of resource blocks, or it can specify a specific resource block index. This signaling can be done in RRC or DCI signaling, and can include an initial PRB or VRB index. The signaling can additionally include a reference signal index, which can be indicated for a time division and which can jump over time. This signaling can be done in RRC or DCI signaling and can include an initial reference signal index. Alternatively, the reference signal index can be implicitly signaled according to the index of a UE among a group. The signaling may additionally include an EU specific cyclic shift value between two time divisions. This signaling is a way to designate a hop pattern. This signaling can be done in RRC or DCI signaling. More generally, the signaling may include a specific EU / kop jump pattern (0. Where i is a division index. The signaling may additionally include a total number of free concession resources (N _RB ) or a number of subbands (n _sb ) .The number of RBs in each sub-band or CTU size can be signaled or derived from N _RB en _sb . This signaling can be broadcast signal or higher layer signaling, for example, in SIB or RRC signaling. The signaling can additionally include a number of resource blocks in each subband (N _sb ). This signaling can be broadcast signaling, for example, in the SIB. The signaling can optionally include a periodicity of the hop pattern, which is the number of time units between frames, with a pattern in each frame. This signaling can be done in RRC signaling. The signaling can also optionally include a time interval between two concession-free regions (or one per iodicity), with a pattern in a TTI. That is, multiple
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52/70 resource regions can be configured over time, and the time interval can designate how many partitions are present and the time between partitions, such as time divisions 402 in Figure 4. This signaling can be done in signaling RRC.
[0164] In one embodiment, a base station can explicitly signal a quantity to a UE, f _hop (i) or g (i), by which the UE must jump from one subband to another. In one embodiment, f _hop (Q or g (i) is a function of an EU index m based on the following equations:
/ kop (0 = ^m x (range index) mod (total number of subbands) g (í) = mx (range index) x N _RB mod (total number of RBs) [0165] A jump parameter of resource designates which resource blocks to use and which hop parameter to use. In the resource hop parameter, the base station can explicitly designate which subband a UE should jump to. The base station can also designate how many blocks of resource an UE must move to the next division.
[0166] In one embodiment, a configuration or update of resources to be used by a plurality of concession-free UEs in the cell coverage area is achieved through multicast signaling for groups of UEs in the cell, such as groups 406 Figure 4. Multicast signaling can configure resources for a group of UEs at the same time. The group of UEs can share the same concession-free resources in a TTI. In one embodiment, the group of UEs share the same concession-free resources in a particular division of the framework (for example, time division index 0) or the same initial transmission. Multicast signaling can be implemented by common group DCIs or by slow multicast signaling. The multicast configuration signaling can include the initial concession-free resources common to the group of UEs or the common resources in a given TTI. Signaling may additionally include reference signal parameters that may not be common for a group. A reference signal index can be implicitly signaled according to the UE index among the group. Signaling can additionally include a feature jump pattern for different time divisions or for repetition / retransmission. The feature jump pattern may be different for
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53/70 each EU in a group and can also be implicitly flagged according to an EU index between the group.
[0167] In addition, multicast signaling can be done using a common group NRPDCCH or group DCI. Group DCI resource configuration can be performed as follows. A common group DCI search space can be defined by a group Temporary Radio Network Identifier (RNTI), and a cyclic redundancy check (CRC) can be scrambled by the group RNTI. In group DCIs, a resource block assignment can be made for an initial transmission or for a given time split for all UEs within the group. Reference signal parameters (such as a cyclic offset value) can be configured for a given time split or for initial transmission to a UE with index 0. indices for other UEs can be derived using the UE index between the group , so that two UEs do not have the same reference signal on the same resource based, for example, on RS index = (configured RS index + EU index) mod (total number of RS index) or RS index = mod EU index (total number of RS index). If the RS index is defined only in terms of the EU index, the RS index does not need to be explicitly flagged. A reference signal for other time divisions can be derived from a given time division. In addition, a resource jump pattern can be configured. An EU-specific resource jump pattern can be determined by an EU index based, for example, on m = UE_index mod N _sb .
[0168] In one embodiment, unicast RRC signaling can be used to configure a group_RNTI for common group DCIs and to configure a UE index on the group RNTI.
[0169] In one mode, resource configuration is performed for an initial transmission only, and retransmission resources are not configured. Relay resources can rely on concession-based transmissions.
[0170] In some modalities, concession-free initial transmission resources and retransmission / repetition resources are configured separately. As described in more detail below, free broadcasts
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54/70 concessions can be configured to perform repetitions for a defined number of times, K. The maximum number of repetitions can be configured. A UE can stop the repetitions before the maximum is reached if the UE receives an ACK. In this case, concession-free retransmission features can be configured using a feature hop pattern.
[0171] In other modalities, initial and concession-free retransmission resources are configured together. In that case, a UE may use any of the concession-free resources configured for initial transmissions and retransmissions.
[0172] In one modality, two types of resources free of concession are configured. Type 1 features are cell specific and are configured using broadcast signaling. UEs can access Type 1 resources without additional configuration. Type 2 features are UE specific and are configured using a combination of broadcast signaling and unicast / multicast signaling. UEs can access resources only after unicast / multicast configuration. Type 1 resources can be used for UEs in an idle or inactive state, but UEs in other states, for example, active state, are not prohibited from using Type 1 concession free resources. Type 2 resources can be used only for UEs in an active state. Type 1 and Type 2 features can overlap or can be completely separated. Type 1 resources can be configured in the system information block (SIB), which can contain information about the location of time / frequency / resource pools and a reference signal pool. Type 2 resources can be configured in the SIB plus RRC signaling, where the SIB contains common resource information, such as the total number of resource blocks and a subband size to jump, and where the RRC signaling contains an allocation EU specific resource. A multiple access reference / subscription signal can be randomly selected by the UEs from a reference signal pool for Type 1 concession-free resources and can be semi-statically pre-configured for Type 2 concession-free resources .
[0173] The difference between the two types of resources is that for Type 1, information is received only on broadcast signaling, and a UE can access the resources without any specific UE configuration. A resource
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55/70 Type 2 can only be used for an UE in the active state. For an UE to obtain resources, the UE must first receive configuration information from RRC signaling. Type 1 and Type 2 resources can be separated in the time / frequency domain. As an example, there may be a pool of 100 reference signs / MA signatures and, for Type 1 concession free resources, the UE may randomly select one of the reference signs / MA signatures. For a Type 2 UE, the MA signature / reference signal can be semi-statically configured (o). A reference signal can be assigned and a potential resource can be associated with the reference signal.
[0174] For Type 1, a UE can decode the SIB information before the UE directly transmits grant-free data without waiting for or relying on any of the UE-specific resource configuration information. A Type 1 UE has SIB, which the UE can decode immediately, without having any cell association. That is, for Type 1, all necessary resources (including time-frequency resources, MA subscription / reference signal resources, and MCS) are available. A Type 1 UE can start using resources by choosing randomly from the reference signal pool. A Type 1 UE need not be told what specific resources to use. Type 2 signaling gives an individual UE a specific configuration.
[0175] In one modality, free concession resources for a UE are configured in different time divisions, where the resources are indicated using one or more of an interval / period of access for free concession resources, a time / frequency location of a concession-free resource in a given division, a resource jump pattern, and, optionally, a recurrence of the resource jump pattern. The size of the configured free-time resource / time location may be UE-specific and may not be the same among all concession-free UEs. Skipped resources can be configured using a resource skip pattern that can be used for both initial transmission and retransmission or used for retransmission only. The resource jump pattern can include two types. Type 1 is an explicit configuration of a specific EU jump pattern. Type 2 is a pseudo-random hop pattern that is specific to UE. The resource configuration can be signaled using broadcast signaling plus RRC signaling or using
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56/70 broadcast signaling plus RRC signaling plus DCI. In the Type 1 feature hop pattern, the PRB index can be derived as a function of one or more of the time division VRB index that is explicitly configured or flagged, or a number of cyclically displaced PRBs or sub-bands from one time split to the next time split. The number of PRBs cyclically shifted from one time division to the next time division can be calculated as an integer index m multiplied by the number of resource blocks of a concession-free subband (Nsb), where Nsb can be configured in the SIB. The index m is configured to be different for UEs that share common resources within a concession-free subband. In the Type 2 resource hop pattern, the PRB index can be derived as a function of the time division VRB index that is explicitly configured or flagged. Additionally or alternatively, a number of PRBs cyclically shifted from one time division to the next time division is computed as a function of a pseudo-random sequence that changes in each time division, where the pseudo-random sequence is initialized as a function of ID HUH. In this way, each UE uses a different pseudo-random jump pattern. This is contrary to LTE grant-free cases, where hop is cell specific and the UEs in a cell use the same pattern because the pattern is initialized in the cell ID. In some modalities, whether the type 1 or type 2 resource hop pattern is used is configurable, for example, using semi-static (for example, RRC) or dynamic (for example, DCI) signaling. In some embodiments, the type 1 or type 2 resource hop pattern may be a part of the jump index signaled to the UE for hop pattern derivation.
[0176] Setting of reference signal parameters can be derived as a function of one or more of an explicitly configured or signaled initial reference signal value or the reference signal jump as a time division function or frame index , where the leap pattern is the same for UEs that share common concession-free resources in a given time division.
[0177] In one embodiment, multicast signaling is used to configure or update a concession-free resource allocation for a group of UEs, where the resource allocation includes time / frequency resources, parameters of
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57/70 reference signal, an MCS, and a periodicity. The time / frequency resources for a given time division are configured in common for all UEs. The reference signal and the resource jump pattern are a function of an EU index among the group. A new reference signal can be determined based on a reference signal configured in accordance with RS = (RS configured EU index) mod (total number of reference signals).
[0178] A resource jump pattern can be used, where a cyclic displacement value, m, is a function of an UE index (m = f (UEJndex)). Multicast signaling can be configured using common group DCI. In the RRC configuration, a concession-free group RNTI and a UE index among the concession-free group are configured. In common group DCIs, a concession-free group RNTI is used to define the search space and shuffle the CRC. The reference signal, MCS, and time resources are configured to be the same between the group, and the initial frequency resource and the resource hop pattern are different between the group. The frequency resources of different UEs in the group are mapped to a different frequency partition (sub-bands) for each time division. The location of a UE's subband index is implicitly indicated by an UE index among the group. In some modalities, the hop pattern is implicitly calculated based on a pseudo-random permutation pattern that changes with each time division. The pseudo-random pattern is group specific (for example, with a seed initialized with a group RNTI).
[0179] There may be multiple parts of bandwidth (BWPs) configured for each concession-free UE. A number of one or more BWPs can be active in each time slot. The feature hop pattern or frequency hop pattern can be configured for each part of bandwidth (BWP). The jump can be defined within a BWP, that is, the frequency sub-band to which the UE jumps in a different time division belongs to the same BWP. In some other modalities, the frequency hopping pattern can be set for a different BWP, that is, the UE can jump to a different BWP in a different time division. As mentioned above, a UE can be configured to repeat a concession-free transmission for a number
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58/70 defined methods, K. Methods for determining an appropriate value for K will now be considered.
[0180] Current techniques for determining K are cell-based, and K can be determined by a latency boundary. For example, for IIRLLC, K can be configured as 6 divisions for a framing based on 60 kHz numbering division.
[0181] In one mode, K is made to be UE specific to optimize performance. That is, each of the UEs in a plurality of UEs in the cell coverage area is assigned a K value based on different parameter values associated with the UEs. For example, K values can be assigned based on a location of the UE within the cell, based on signal conditions experienced by the UE, or based on combinations of such specific UE parameters. Making the UE specific K reduces unnecessary repetitions for some UEs and helps to avoid unnecessary ACKs for early repetition stoppage. In one embodiment, K is based on one of the UE channel conditions or measurements. A UE can be configured with a single K, or multiple K values can be used for a single UE. The K configuration can be semi-static or dynamic as needed.
[0182] In one embodiment, given the long term of channel measurements and the reliability and / or latency requirements of the UE, K can be chosen to satisfy any one of several conditions. Among the conditions to be considered are associated factors such as sub-band size, resource allocation size, numbering, division / mini-division structure, MCS, and types of application / traffic. That is, different K values can be used for different numbers, different K values can be used for different types of divisions, and different K values can be used for different resource allocation sizes.
[0183] K may need to satisfy latency requirements (if any), so K may be less than or equal to the threshold related to latency. For example, K = 6 for a 60 kHz split frame structure. K may also need to be minimized. K repetitions may need to meet a reliability requirement as needed. For example, taking an offline signal-to-interference-to-noise (SINR) simulation table
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59/70 for block error rate (BLER), for an estimated SINR, the smallest K can be estimated, with optionally some margin for precaution.
[0184] In one embodiment, a UE is configured with multiple K values, which can allow the UE to adapt to channel and environment variations and / or changes in mobility. That is, if a UE changes locations or experiences a change in channel conditions, the UE can select one of its multiple K values as appropriate for the changed location or changed channel conditions. For example, a UE can select a lower value of K when near a cell center and can select a higher value of K when near a cell border. Alternatively or in addition, a UE can select a lower K value when channel conditions are relatively good and can select a higher K value when channel conditions are relatively poor. The base station can blindly detect the different values of K repetitions. Alternatively, the UE can signal the base station to inform the base station which K value the UE is using.
[0185] When a single EU-specific K value is used, K can be defined with sufficient caution to achieve the relevant requirements. Combination with HARQ signal can be performed in some or all K repetitions. Optionally, the K repetitions can be terminated by an ACK message from the base station or by an UL grant message from the base station. In cases where an occasion with K repetitions fails, retransmission of the failed packet can be done. In this case, another occasion with K repetitions can be implemented or a different number Μ (M + K) of the repetitions can be performed. The HARQ signal combination can be performed on some or all of the retry / retransmission signals.
[0186] When multiple UE-specific K values are used, the base station can continue to detect and decode the UE repeat signals until the maximum K is reached. The HARQ signal combination can be performed in some or all of the K repetitions. For each of the K values, the base station can optionally provide feedback to the UE. Optionally, the K repetitions can be terminated by an ACK message from the base station or by an UL grant message from
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60/70 of the base station.
[0187] In one embodiment, a UE can signal, explicitly or implicitly, to the base station to indicate to the base station the K value or values the UE is using. For example, the UE can use different allocations and / or resource sizes to map different K values. Alternatively, the UE can use different reference signs to indicate different K. values.
[0188] A UE can signal a K value to a base station using a semi-static signaling configuration. A semi-static signaling configuration can be beneficial in reducing signaling overhead.
[0189] Alternatively, a UE can signal a K value to a base station using dynamic signaling. Dynamic signaling can be beneficial in a fast update situation, for example, for fast mobile UEs.
[0190] In one embodiment, a UE can determine an appropriate K value based on measurements related to communications in which the UE engages. For example, during an initial UE network entry, a base station typically takes network-based UL measurements of the initial transmission signals, such as signal strength and SINR. A UE can receive such measurement results and use the results to determine an appropriate K value. Alternatively or additionally, a UE can use its downlink measurements such as Receiving Reference Signal Power (RSRP) and Channel Quality Indicator (CQI) to determine an appropriate K value. Base station background noise and interference level measurements can also be taken into account when determining an appropriate K value.
[0191] Figure 5 illustrates an exemplary flowchart of a 500 method modality for concession-free transmissions (FG). Method 500 starts at step 502, where a user device (UE) can receive a Radio Resource Control (RRC) signal. The RRC signal can specify at least one EU-specific temporary GF radio network identifier (GF-RNTI). The EU-specific GF-RNTI is different from a cell RNTI (C-RNTI) for initial transmission or retransmission based on
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61/70 concession of initial transmission based on concession.
[0192] In step 504, the UE can perform a UL GF transmission. The UE can perform UL GF transmission without waiting for a downlink control information (DCI) signal.
[0193] In some modalities, the UE can detect the DCI signal in a search space of a physical downlink control channel (PDCCH) using the GF-RNTI. The DCI signal can comprise information about a retransmission related to the GF transmission. The DCI signal may also comprise specific GF configuration parameters. The UE can detect the DCI signal in the PDCCH search space using the GF-RNTI by unscrambling a cyclic redundancy check (CRC) of the DCI signal according to the GF-RNTI and performing a CRC check of the DCI signal using the unscrambled CRC.
[0194] In some embodiments, the UE can perform the transmission of UL GF in response to the receipt of the RRC signal and before the detection of the DCI signal. In some modalities, before receiving the RRC, the UE can perform initial access by sending a preamble through a random access channel (RA) (RACH).
[0195] Figure 6 illustrates an exemplary flowchart of a modality of method 600 of uplink transmissions (UL) free of concession (GF) by a user equipment (UE) in a group of UEs. Method 600 starts at step 602, where a UE can receive a Radio Resource Control (RRC) signal. The RRC signal can specify a GF group Temporary Radio Network Identifier (RNTI) and an EU index. The RNTI of GF group can be shared in common by the group of UEs. The UE index can be assigned to the UE. In addition, the UE index may differ from the UE indices assigned to other UEs in the UE group.
[0196] In step 604, the UE can receive a multicast signal. The multicast signal can specify at least frequency resources and Modulation and Coding Scheme (MCS) to be shared by the UEs in the group. In some embodiments, the multicast signal may be a common signal from the downlink control information group (DCI) addressed to the group of UEs sharing the RNTI of the GF group. GTI group RNTI can be used to scramble a cyclic redundancy check (CRC)
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62/70 of the common group DCI.
[0197] In step 606, the UE can perform UL GF transmissions. The UE can perform UL GF transmissions according to the GF group RNTI, the UE index, the frequency resources, and the MCS.
[0198] In some embodiments, the UE can determine a reference signal according to the EU index. In these modalities, the UE can carry out UL GF transmissions according to the determined reference signal, the RNF of GF group, the frequency resources, and the MCS. The reference signal can be determined on the basis of a currently configured reference signal, the EU index, and a total number of available reference signals.
[0199] In some embodiments, the UE may determine a jump pattern based on the EU index. The UE can perform UL GF transmissions according to the GF group RNTI, the UE index, the frequency resources, the MCS, and the determined hop pattern. The determined jumping pattern of the UE may be different from the jumping patterns of other UEs in the UE group.
[0200] In some embodiments, the UE may receive an EU-specific RRC signal. The EU-specific RRC signal can specify a periodicity. The UE can perform UL GF transmissions according to the GF group RNTI, the UE index, the frequency resources, the MCS, and the periodicity.
[0201] Figure 7 illustrates an exemplary flowchart of a 700 method modality for concession-free uplink (UL) transmissions (GF). Method 700 starts at step 702, where a user device (UE) can receive a UE-specific resource hop pattern assigned to the UE. The EU-specific resource hop pattern can comprise hop information. The jump information can be associated with a sub-band to which the UE jumps in each corresponding time division of a plurality of time divisions.
[0202] In some modalities, the jump information can indicate the subband to which the UE jumps in each corresponding time division of the plurality of time divisions. The hop information can comprise a specific EU cyclical offset value. The EU specific cyclic offset value can indicate a number of sub-bands to be
Petition 870190099477, of 10/04/2019, p. 240/263
63/70 cyclically shifted by the UE from one time slot to the next time slot.
[0203] In step 704, the UE can perform UL GF transmissions according to the EU specific resource hop pattern. In some embodiments, the subband to which the UE jumps in each corresponding time slot can be determined based on the specific EU cyclical shift value. In one embodiment, the subband to which the UE jumps in each corresponding time slot can be determined based on the specific cyclical displacement value of the UE and an initial subband for the UE. In another embodiment, the subband to which the UE jumps in each corresponding time slot can be determined based on an UE identifier. For example, the subband to which the UE jumps in each corresponding time slot can be determined based on a specific UE pseudo-random sequence initialized by the UE identifier. In some embodiments, the UE identifier may be a temporary UE-specific GF radio network identifier (GF-RNTI). In yet another modality, the subband to which the UE jumps in each corresponding time slot can be determined based on a specific UE jump index assigned to the UE.
[0204] In some embodiments, the subband to which the UE jumps in each corresponding time slot can be determined based on a specific EU cyclical offset value derived from the specific EU jump index and a initial subband for the UE derived from the EU specific jump index. In some embodiments, the subband to which the UE jumps in each corresponding time slot can be determined based on an identifier of a group of UEs. For example, the subband to which the UE jumps in each corresponding time slot can be determined based on a group-specific pseudo-random sequence initialized by the UE group identifier. In one embodiment, the UE group identifier can be a temporary Radio Network Identifier (RNTI) group. In another embodiment, the UE group identifier is determined based on a specific UE jump index.
[0205] In some embodiments, the UE can determine a reference signal based on a specific EU jump index.
Petition 870190099477, of 10/04/2019, p. 241/263
64/70 [0206] In some embodiments, to perform UL GF transmissions, the UE can determine a subband to which the UE jumps in a time slot based on the jump information. The UE can then derive a physical resource block index (PRB) in the time division according to the given subband, a total number of resource blocks (RBs) in the given subband, and a total number of RBs assigned to GF transmissions. The UE can then carry out UL GF transmissions in the time division according to the derived PRB index.
[0207] According to one embodiment of the present disclosure, a method for configuring a concession-free resource includes configuring a first type of concession-free resource, in which the first type of concession-free resource is cell specific and is configured using broadcast signaling, and where the first type of concession-free resource is accessible to a UE without additional configuration; and configuring a second type of concession-free resource, where the second type of concession-free resource is UE-specific and is configured using a combination of broadcast signaling and unicast / multicast signaling, and where the second type of resource Concession-free is accessible to a UE only after configuration using unicast / multicast signaling.
[0208] According to one embodiment of the present disclosure, a method for configuring concession-free resources for a UE includes indicating a first time and frequency location of the concession-free resources in a first TTI; and indicate a resource jump pattern, where the resource jump pattern indicates a pattern according to which the UE must move to different locations of time and frequency in subsequent TTIs.
[0209] According to one embodiment of the present disclosure, a method for configuring a grant-free resource allocation for a group of UEs includes configuring time and frequency resources for a common TTI for all UEs in the group; configure a reference signal and a resource jump pattern as a function of an EU index in the group; and selectively broadcast the concession-free resource allocation to the group, where the concession-free resource allocation includes time and frequency resources, reference signal parameters, and an MCS to be used by the UEs in the group.
Petition 870190099477, of 10/04/2019, p. 242/263
65/70 [0210] According to one embodiment of the present disclosure, a method for concession-free transmission includes repeating a concession-free transmission for a first defined number of times, where the first defined number of times is based on a value of at least one parameter associated with a UE that is making the transmission free of concession.
[0211] Figure 8 illustrates a block diagram of a processing system modality 800 for carrying out methods described in this document, which can be installed on a host device. As shown, the processing system 800 includes a processor 804, a memory 806, and interfaces 810 to 814, which may (or may not) be arranged as shown in the figure. The 804 processor can be any component or collection of components adapted to perform computations and / or other processing-related tasks, and the 806 memory can be any component or collection of components adapted to store programming and / or instructions for execution by the 804 processor. In one embodiment, memory 806 includes computer readable non-transitory media. The interfaces 810, 812, 814 can be any component or collection of components that allow the processing system 800 to communicate with other devices / components and / or a UE. For example, one or more of interfaces 810, 812, 814 may be adapted to communicate data, control, or management messages from processor 804 to applications installed on the host device and / or a remote device. As another example, one or more of the interfaces 810, 812, 814 can be adapted to allow a user or user device (eg personal computer (PC), etc.) to interact communicate with processing system 800. Processing system 800 may include additional components not shown in the figure, such as long-term storage (e.g., non-volatile memory, etc.).
[0212] In some embodiments, the processing system 800 is included in a network device that is accessing a 900 telecommunications network, or part of it. In one example, the processing system 800 is on a network side device on a wireless or wired telecommunications network, such as a base station, a relay station, a scheduler, a controller, a gateway, a
Petition 870190099477, of 10/04/2019, p. 243/263
66/70 router, an application server, or any other device on the telecommunications network. In other embodiments, the processing system 800 is on a user side device that accesses a wireless or wired telecommunications network, such as a mobile station, user equipment (UE), a personal computer (PC), a tablet, a wearable communications device (for example, a smart watch, etc.), or any other device adapted for access to the telecommunications network.
[0213] In some embodiments, one or more of the interfaces 810, 812, 814 connects the processing system 800 to a transceiver adapted to transmit and receive signaling over the telecommunications network. Figure 9 illustrates a block diagram of a transceiver 900 adapted to transmit and receive signaling over a telecommunications network. Transceiver 600 can be installed on a host device. As shown, transceiver 900 comprises a network side interface 902, a coupler 904, a transmitter 906, a receiver 908, a signal processor 910, and an interface device side 912. The network side interface 902 can include any component or collection of components adapted to transmit or receive signaling over a wireless or wired telecommunications network. Coupler 904 can include any component or collection of components adapted to facilitate bidirectional communication via the network side interface 902. The transmitter 906 can include any component or collection of components (eg, upconverter, power amplifier, etc.) adapted to convert a baseband signal into a modulated carrier signal suitable for transmission over the network side interface 902. The receiver 908 can include any component or collection of components (e.g., down converter, low noise amplifier, etc.). ) adapted to convert a carrier signal received by the network side interface 902 into a baseband signal. The signal processor 910 may include any component or collection of components adapted to convert a baseband signal into a data signal suitable for communication through the device side interface (s) 912, or vice versa. The device side interface (s) 912 may include any component or collection of components adapted to communicate data signals between the data processor
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67/70 signal 910 and components within the host device (for example, the processing system 800, local area network (LAN) ports, etc.).
[0214] Transceiver 900 can transmit and receive signaling through any type of communication medium. In some embodiments, the transceiver 900 transmits and receives signaling over a wireless medium. For example, transceiver 900 may be a wireless transceiver adapted to communicate according to a wireless telecommunications protocol, such as a cellular protocol (eg, long-term evolution (LTE), etc.), a protocol wireless local area network (WLAN) (for example, Wi-Fi, etc.), or any other type of wireless protocol (for example, Bluetooth, proximity field communication (NFC), etc.). In such embodiments, a network side interface 902 comprises one or more antenna / radiation elements. For example, the network side interface 902 can include a single antenna, multiple separate antennas, or an array of multiple antennas configured for multi-layer communication, for example, single multiple input (SIMO), multiple single input ( MISO), multiple input multiple output (MIMO), etc. In other modalities, the transceiver 900 transmits and receives signaling through a wired media, for example, twisted pair cable, coaxial cable, optical fiber, etc. Specific processing systems and / or transceivers may use all components shown, or only a subset of the components, and levels of integration may vary from device to device.
[0215] It should be noted that one or more stages of the method modalities provided in this document can be performed by corresponding units or modules. For example, a signal can be transmitted by a transmission unit or a transmission module. A signal can be received by a receiving unit or a receiving module. A signal can be processed by a processing unit or a processing module. Other steps can be performed by a configuration unit / module and / or an indication unit / module. The respective units / modules can be hardware, software, or a combination of them. For example, one or more of the units / modules may (m) be an integrated circuit, such as field programmable port arrangements (FPGAs) or application-specific integrated circuits (ASICs).
Petition 870190099477, of 10/04/2019, p. 245/263
68/70 [0216] In an exemplary mode for concession-free uplink (UL) transmissions (GF) by user equipment (UE) in a group of UEs, the UE receives a Radio Resource Control signal ( RRC) specifying a GF group Temporary Radio Network Identifier (RNTI) and an EU index. GF group RNTI can be used to scramble the cyclic redundancy check (CRC) of common group DCI. The GTI group RNTI is shared in common by the UE group, and the UE index is assigned to the UE. The EU index is different from the EU indexes assigned to other UEs in the UE group.
[0217] Then, the UE receives a multicast signal specifying at least frequency resources and a Modulation and Encoding Scheme (MCS) to be shared by the UEs in the group. The multicast signal can be a common downlink control information group (DCI) signal addressed to the UE group that shares the GF group RNTI.
[0218] The UE then carries out UL GF transmissions in accordance with the GF group RNTI, the UE index, frequency resources, and the MCS. The UE can perform UL GF transmissions by determining a reference signal according to the UE index and performing UL GF transmissions according to the determined reference signal, the RNF of GF group, the frequency resources, and the MCS. The reference signal can be determined on the basis of a currently configured reference signal, the EU index, and a total number of available reference signals.
[0219] In addition, the UE can determine a jump pattern based on the EU index. The jumping pattern of the UE is different from the jumping patterns of other UEs in the group. The UE can perform UL GF transmissions according to the GF group RNTI, the UE index, the frequency resources, the MCS, and the determined hop pattern.
[0220] The UE can also receive an EU-specific RRC signal specifying a periodicity. The UE can perform UL GF transmissions according to the GF group RNTI, the UE index, the frequency resources, the MCS, and the periodicity.
[0221] In an exemplary mode for concession-free uplink (UL) transmissions (GF), a UE receives an UE-specific resource hop pattern assigned to the UE. The feature jump pattern
Petition 870190099477, of 10/04/2019, p. 246/263
EU-specific 69/70 comprises jump information associated with a sub-band to which the UE jumps in each corresponding time division of a plurality of time divisions. The jump information indicates the subband to which the UE jumps in each corresponding time division of the plurality of time divisions. The hop information comprises a specific cyclical displacement value of UE indicating a number of sub-bands to be cyclically displaced by the UE from one time division to the next time division, and the sub-band to which the UE jumps in each corresponding time division is determined based on the EU specific cyclic shift value.
[0222] The subband to which the UE jumps in each corresponding time division can be determined based on the specific cyclic displacement value of the UE and an initial subband for the UE. The subband to which the UE jumps in each corresponding time slot can be determined based on an UE identifier. The subband to which the UE jumps in each corresponding time slot can be determined based on a specific pseudo-random sequence of UE initialized by the UE identifier. The UE identifier can be a temporary specific GF radio network identifier (GF-RNTI). The subband to which the UE jumps in each corresponding time slot can be determined based on a specific UE jump index assigned to the UE. The subband to which the UE jumps in each corresponding time division is determined based on a specific cyclic displacement value of UE derived from the specific jump index of UE and an initial subband for the UE derived from from the EU specific jump index. The subband to which the UE jumps in each corresponding time slot is determined based on an identifier of a group of UEs. The subband to which the UE jumps in each corresponding time slot is determined based on a group-specific pseudo-random sequence initialized by the UE group identifier. The UE group identifier can be a group Temporary Radio Network Identifier (RNTI). The UE group identifier is determined based on a specific UE jump index.
[0223] The UE then carries out UL GF transmissions according to the EU specific resource hop pattern. The UE can determine a subband
Petition 870190099477, of 10/04/2019, p. 247/263
70/70 for which the UE jumps in a split of time based on the jump information. The UE can derive a physical resource block index (PRB) in the time division according to the given subband, a total number of resource blocks (RBs) in the given subband, and a total number of assigned RBs for GF transmissions. The UE then performs UL GF transmissions in the time division according to the derived PRB index. The UE can also determine a reference signal based on a specific UE jump index.
[0224] Although the modalities have been described with reference to illustrative modalities, this description is not intended to be interpreted in a limiting sense. Various modifications and combinations of the illustrative modalities, as well as other modalities, will be evident to persons skilled in the art upon reference to the description. It is therefore intended that the appended claims cover any modifications or modalities like these.

权利要求:
Claims (15)
[1]
1. Method for concession-free transmissions (FG), FEATURED by the fact that the method:
receives (203), by a user equipment (UE), a Radio Resource Control (RRC) signal specifying at least one temporary specific GF radio network identifier (GF-RNTI), where the GF- RNTI is different from a cell RNTI (C-RNTI) for an initial concession-based transmission or retransmission of the initial concession-based transmission; and performs (206), by the UE, an UF link transmission (UL) GF without waiting for a downlink control information (DCI) signal.
[2]
2. The method according to claim 1, further comprising detecting, by the UE, the DCI signal in a search space of a downlink physical control channel (PDCCH) using the GF-RNTI, the DCI signal comprising information about a relay related to UL GF transmission.
[3]
Method according to claim 2, wherein the DCI signal comprises specific configuration parameters GF.
[4]
A method according to claim 2, further comprising:
carry out the transmission of UL GF by the UE in response to the receipt of the RRC signal and before the detection of the DCI signal.
[5]
5. Method according to claim 2, in which the detection of the DCI signal in the PDCCH search space using the GF-RNTI comprises:
unscramble, by the UE, a cyclic redundancy check (CRC) of the DCI signal according to the GF-RNTI; and perform, by the UE, a CRC check of the DCI signal using the unscrambled CRC.
[6]
A method according to any one of claims 1 to 5, further comprising:
before receipt, perform, through the UE, initial access by sending a preamble through a random access channel (RA) (RACH).
[7]
Method according to any one of claims 1 to 6, in
Petition 870190099477, of 10/04/2019, p. 249/263
2/3 that:
the RRC signal indicates a GF transmission resource; and UL GF retransmission is performed on the GF transmission facility indicated on the RRC signal.
[8]
8. User equipment (UE) for concession-free transmissions (FG), the UE FEATURED by:
a non-transitory memory; and a hardware processor configured to perform the method as defined in any one of claims 1 to 7.
[9]
9. Method for concession-free transmissions (FG), FEATURED by the fact that the method:
transmits (203), through a base station to a user equipment (UE), a Radio Resource Control (RRC) signal specifying at least one EU-specific GF radio network (GF-RNTI) identifier, where the GF-RNTI is different from a cell RNTI (C-RNTI) for an initial concession-based transmission or retransmission of the initial concession-based transmission; and receives (206), by the base station, an uplink transmission (UL) GF without transmitting a downlink control information (DCI) signal to the UE.
[10]
A method according to claim 9, further comprising:
transmit, through the base station, the DCI signal comprising information about a retransmission related to UL GF transmission, in which the UE detects the DCI signal in a space search of a downlink physical control channel (PDCCH) using the GF-RNTI.
[11]
A method according to claim 10, wherein the DCI signal comprises specific configuration parameters GF.
[12]
12. The method of claim 10, further comprising:
receive, by the base station, the transmission of UL GF in response to the transmission of the RRC signal and before the transmission of the DCI signal.
[13]
Method according to any one of claims 9 to 12, further comprising:
Petition 870190099477, of 10/04/2019, p. 250/263
3/3 before the transmission of the RRC signal, receive, by the base station, initial access by receiving a preamble through a random access channel (RA) (RACH).
[14]
14. Method according to any one of claims 9 to 13, wherein:
the RRC signal indicates a GF transmission resource; and the UL GF retransmission is received at the GF transmission facility indicated in the RRC signal.
[15]
15. Apparatus for free transmission of concession (GF), the apparatus CHARACTERIZED by:
a non-transitory memory; and a hardware processor configured to perform the method as defined in any of claims 9 to 14.

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法律状态:
2021-10-19| B350| Update of information on the portal [chapter 15.35 patent gazette]|

优先权:

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申请号 | 申请日 | 专利标题

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US201762482671P| true| 2017-04-06|2017-04-06|

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US15/868,657|US10645730B2|2017-04-06|2018-01-11|Flexible grant-free resource configuration signaling|

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PCT/CN2018/078344|WO2018184440A1|2017-04-06|2018-03-07|Flexible grant-free resource configuration signaling|

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