Terminal, wireless communication method and system

Abstract

A terminal according to an embodiment of this disclosure includes: a receiver for receiving any signal among multiple downlink signals, a first uplink signal from another terminal, and a sidelink signal from the other terminal; and a controller for reporting a measurement result of the signal and controlling the reception of a downlink channel or the transmission of an uplink channel by using a beam and a sequence that are based on the report. An embodiment of this disclosure makes it possible to improve the number of multiplexed users.

Description

[Technical Field]

[0001] The present disclosure relates to a terminal, a wireless communication method, and a system Regarding. [Background technology]

[0002] In Universal Mobile Telecommunications System (UMTS) networks, Long Term Evolution (LTE) was specified with the aim of achieving higher data rates and lower latency (Non-Patent Document 1). Also, LTE-Advanced (3GPP Rel. 10-14) was specified with the aim of achieving higher capacity and more advanced features than LTE (Third Generation Partnership Project (3GPP) Release (Rel.) 8, 9).

[0003] Successor systems to LTE (e.g., 5th generation mobile communication system (5G), 5G+ (plus), 6th generation mobile communication system (6G), New Radio (NR), 3GPP Rel. 15 or later) are also being considered.

[0004] In existing LTE systems (e.g., 3GPP Rel. 8-14), a user equipment (UE) transmits uplink control information (UCI) using at least one of an UL data channel (e.g., a Physical Uplink Shared Channel (PUSCH)) and an UL control channel (e.g., a Physical Uplink Control Channel (PUCCH)). [Prior art documents] [Non-patent literature]

[0005] [Non-Patent Document 1] 3GPP TS 36.300 V8.12.0 “Evolved Universal Terrestrial Radio Access (E-UTRA) and Evolved Universal Terrestrial Radio Access Network (E-UTRAN); Overall description; Stage 2 (Release 8)”, April 2010 Summary of the Invention [Problem to be solved by the invention]

[0006] In future wireless communication systems (e.g., NR), improvements in performance such as coverage and user multiplexing number are being considered.

[0007] However, it is not clear how to use MU-MIMO to improve the number of users multiplexed. If the method for using MU-MIMO is not clear, there is a risk that the improvement of the number of users multiplexed will be hindered.

[0008] Therefore, the present disclosure provides a terminal, a wireless communication method, and system One of the aims is to provide [Means for solving the problem]

[0009] A terminal according to an embodiment of the present disclosure includes a receiver configured to receive any one of a plurality of downlink signals, a first uplink signal from another terminal, and a sidelink signal from the other terminal; First uplink Report the signal measurement results and based on said report resource and a control unit that controls transmission of an uplink channel using the other terminal using a signal from the other terminal, wherein the receiving unit receives information about resources of the first uplink signal and a second uplink signal transmitted from the own terminal, and receives the first uplink signal based on the information. believe do. [Effects of the Invention]

[0010] According to one aspect of the present disclosure, the number of users can be improved. [Brief explanation of the drawings]

[0011] [Figure 1] 1A and 1B are diagrams illustrating an example of data sharing among multiple UEs. [Figure 2] 2A and 2B are diagrams showing an example of grouping according to aspect 1-1-1. [Figure 3] 3A and 3B are diagrams showing an example of grouping according to aspect 1-1-2. [Figure 4] 4A and 4B are diagrams showing an example of grouping according to aspect 1-1-3. [Figure 5] 5A and 5B are diagrams showing an example of grouping according to aspect 1-1-3. [Figure 6] 6A and 6B are diagrams illustrating an example of a transmission resource allocation method according to aspect 1-2-1. [Figure 7] FIG. 7 is a diagram illustrating an example of a transmission resource allocation method according to aspect 1-2-2. [Figure 8] FIG. 8 is a diagram illustrating an example of a data sharing and resource allocation method according to aspect 2-1. [Figure 9] FIG. 9 is a diagram illustrating an example of MU-MIMO. [Figure 10] FIG. 10 is a diagram illustrating an example of a combination of multiple UEs for MU-MIMO. [Figure 11] FIG. 11 is a diagram illustrating an example of a schematic configuration of a wireless communication system according to an embodiment. [Figure 12] FIG. 12 is a diagram illustrating an example of the configuration of a base station according to an embodiment. [Figure 13] FIG. 13 is a diagram illustrating an example of the configuration of a user terminal according to an embodiment. [Figure 14] FIG. 14 is a diagram illustrating an example of the hardware configuration of a base station and a user terminal according to an embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0012] (traffic type / service) In future wireless communication systems (e.g., NR), traffic types (also referred to as services, service types, communication types, use cases, etc.) such as further advances in mobile broadband (e.g., enhanced Mobile Broadband (eMBB)), machine-type communications that enable multiple simultaneous connections (e.g., massive Machine Type Communications (mMTC), Internet of Things (IoT)), and highly reliable and low-latency communications (e.g., Ultra-Reliable and Low-Latency Communications (URLLC)) are expected. For example, URLLC requires lower latency and higher reliability than eMBB.

[0013] Traffic types may be identified at the physical layer based on at least one of the following: ·Priority Logical channels with different priorities Modulation and Coding Scheme (MCS) table (MCS index table) Channel Quality Indication (CQI) table DCI format Used to scramble (mask) the Cyclic Redundancy Check (CRC) bits included (added) in the DCI (DCI format) (RNTI: System Information-Radio Network Temporary Identifier) RRC (Radio Resource Control) parameters A specific RNTI (e.g., RNTI for URLLC, MCS-C-RNTI, etc.) Search Space Fields within the DCI (e.g., newly added fields or reuse of existing fields, priority fields)

[0014] Specifically, the traffic type of the HARQ-ACK for the PDSCH may be determined based on at least one of the following: The MCS index table used to determine at least one of the modulation order, target code rate, and transport block size (TBS) of the PDSCH (for example, whether to use MCS index table 3). The RNTI used for CRC scrambling of the DCI used for scheduling the PDSCH (for example, whether CRC scrambling is performed using C-RNTI or MCS-C-RNTI)

[0015] The traffic type of the SR may also be determined based on a higher layer parameter used as an SR identifier (SR-ID), which may indicate whether the traffic type of the SR is eMBB or URLLC.

[0016] Furthermore, the traffic type of the CSI may be determined based on configuration information (CSIreportSetting) related to CSI reporting, a DCI type or DCI transmission parameters used for triggering, etc. The configuration information, DCI type, etc. may indicate whether the traffic type of the CSI is eMBB or URLLC. The configuration information may also be higher layer parameters.

[0017] In addition, the traffic type of the PUSCH may be determined based on at least one of the following: The MCS index table used to determine at least one of the modulation order, target coding rate, and TBS of the PUSCH (e.g., whether to use MCS index table 3) The RNTI used for CRC scrambling of the DCI used for scheduling the PUSCH (for example, whether CRC scrambling is performed using C-RNTI or MCS-C-RNTI)

[0018] The traffic type may be associated with communication requirements (requirements such as delay, error rate, etc.), data type (voice, data, etc.), and the like.

[0019] The difference between the requirements of URLLC and eMBB may be that the latency of URLLC is smaller than that of eMBB, or that the requirements of URLLC include a reliability requirement.

[0020] For example, the eMBB user (U) plane latency requirement may include a downlink U-plane latency of 4 ms and an uplink U-plane latency of 4 ms. Meanwhile, the URLLC U-plane latency requirement may include a downlink U-plane latency of 0.5 ms and an uplink U-plane latency of 0.5 ms. Furthermore, the URLLC reliability requirement may include a 32-byte error rate of 10-5 at a U-plane latency of 1 ms.

[0021] Additionally, enhanced Ultra Reliable and Low Latency Communications (eURLLC) is being studied to improve the reliability of traffic, mainly for unicast data. In the following, when there is no need to distinguish between URLLC and eURLLC, they will simply be referred to as URLLC.

[0022] In NR Rel. 16 and later, the setting of multiple levels (e.g., two levels) of priority for specific signals or channels is being considered. For example, it is expected that different priorities will be set for signals or channels corresponding to different traffic types (also known as services, service types, communication types, use cases, etc.) to control communications (e.g., transmission control in the event of collisions). This will make it possible to control communications by setting different priorities for the same signal or channel depending on the service type, etc.

[0023] The priority of URLLC may be higher than the priority of eMBB. The priority may be set to "high" (high priority, 1) for URLLC and "low" (low priority, 0) for eMBB.

[0024] (coverage improvement) In future wireless communication systems (e.g., Rel. 17 NR), PUSCH is considered to be one of the bottleneck channels in coverage. To extend coverage and improve PUSCH performance, enhancement mechanisms for PUSCH repetition Type A, support for TB processing across multi-slot PUSCH, and joint channel estimation are being considered.

[0025] Specifically, techniques are being considered to improve performance by increasing the time resources for transmitting data.

[0026] Due to the fact that the total transmission power (maximum transmission power) of the UE is fixed, there has been insufficient consideration given to improving characteristics in the frequency domain. For example, increasing frequency resources would mean lowering the power density per unit frequency, making it difficult to significantly improve transmission characteristics. If data transmission resources cannot be increased, there is a risk that coverage improvement will be hindered.

[0027] Therefore, the present inventors have conceived a method of transmitting UL data using other UEs when a UE transmits the data.

[0028] (user multiplexing) Assuming that many terminals, such as IoT devices, will be connected to the network, there is a risk that restrictions will be placed on the number of users multiplexed in the time direction.

[0029] When multi-user (MU)-multi-input multi-output (MIMO) is used, the base station reduces spatial correlation between signals to multiple UEs by transmitting different transmit beams (base station antenna beams) to different UEs.

[0030] When multiple UEs are located within a small area and a base station uses the same base station antenna beam for multiple UEs, communication quality / coverage may be degraded.

[0031] Therefore, the present inventors have conceived a method of multiplexing users in the spatial direction for improving coverage characteristics / connecting multiple terminals.

[0032] Hereinafter, embodiments of the present disclosure will be described in detail with reference to the drawings. Wireless communication methods according to the embodiments may be applied independently or in combination.

[0033] In the present disclosure, "A / B / C" and "at least one of A, B, and C" may be read as interchangeable. In the present disclosure, cell, serving cell, CC, carrier, frequency carrier, BWP, DL BWP, UL BWP, active DL BWP, active UL BWP, and band may be read as interchangeable. In the present disclosure, index, ID, indicator, and resource ID may be read as interchangeable. In the present disclosure, support, control, controllable, operate, and operable may be read as interchangeable.

[0034] In the present disclosure, the terms configure, activate, update, indicate, enable, specify, and select may be read interchangeably.

[0035] In the present disclosure, the higher layer signaling may be, for example, any one of Radio Resource Control (RRC) signaling, Medium Access Control (MAC) signaling, broadcast information, etc., or a combination thereof. In the present disclosure, RRC, RRC signaling, RRC parameters, higher layer, higher layer parameters, RRC information elements (IEs), and RRC messages may be interchangeable.

[0036] The MAC signaling may use, for example, a MAC Control Element (MAC CE), a MAC Protocol Data Unit (PDU), etc. The broadcast information may be, for example, a Master Information Block (MIB), a System Information Block (SIB), Remaining Minimum System Information (RMSI), Other System Information (OSI), etc.

[0037] In the present disclosure, the terms DMRS, DMRS port, and antenna port may be interpreted as interchangeable.

[0038] In this disclosure, the terms beam, spatial-domain filter, spatial setting, TCI state, UL TCI state, unified TCI state, unified beam, common TCI state, common beam, TCI assumption, QCL assumption, QCL parameter, spatial-domain receive filter, UE spatial-domain receive filter, UE receive beam, DL beam, DL receive beam, DL precoding, DL precoder, DL-RS, RS for QCL type D in TCI state / QCL assumption, RS for QCL type A in TCI state / QCL assumption, spatial relationship, spatial-domain transmit filter, UE spatial-domain transmit filter, UE transmit beam, UL beam, UL transmit beam, UL precoding, UL precoder, and PL-RS may be interchangeable. In this disclosure, the terms QCL type X-RS, DL-RS associated with QCL type X, DL-RS with QCL type X, source of DL-RS, SSB, CSI-RS, and SRS may be interchangeable.

[0039] In the present disclosure, panel, Uplink (UL) transmitting entity, TRP, spatial relationship, control resource set (CORESET), PDSCH, codeword, base station, antenna port of a certain signal (e.g., Demodulation Reference Signal (DMRS) port), antenna port group of a certain signal (e.g., DMRS port group), group for multiplexing (e.g., Code Division Multiplexing (CDM) group, reference signal group, CORESET group), CORESET pool, CORESET subset, CW, redundancy version (RV), layer (MIMO layer, transmission layer, spatial layer) may be read as interchangeable.

[0040] (Wireless communication method) In transmitting data (transport block (TB), traffic, UL data, PUSCH) from one UE (terminal) to a NW (network, e.g., base station, gNB), multiple UEs may share the data and transmit the data to the NW using multiple frequencies. Multiple UEs in a UE group may transmit the shared data.

[0041] In the example of Figure 1A, when UE #1 transmits data to a gNB, the data may be shared with UE #2 / UE #3, and UE #1 / UE #2 / UE #3 may transmit the data. In this case, as in the example of Figure 1B, at least two of UE #1, UE #2, and UE #3 may transmit the data at the same time using multiple frequencies different from each other. This allows the overall transmission power to be increased without increasing the transmission power per UE, thereby improving the performance of UL data transmission. Each UE may perform repetition transmission of data.

[0042] The following describes a method for sharing data among multiple UEs and a mechanism for cooperative transmission by multiple UEs (a resource allocation method and a cooperative transmission request method).

[0043] In the present disclosure, a UE attempting to transmit target data to a base station, a transmitting UE, a transmitting terminal, and a UE from which traffic has occurred may be interpreted as interchangeable.

[0044] In the present disclosure, a UE that transmits data from a transmitting UE to a base station, a transmitting UE, a cooperative terminal, and a relay UE may be interchangeable.

[0045] In the present disclosure, the terms UE group, terminal group, transmitting UE and cooperating UE, multiple UEs sharing data, multiple UEs transmitting the same data, group, sharing group, and zone may be interpreted as interchangeable terms.

[0046] In the present disclosure, the terms UE in a UE group, terminal in a terminal group, each of multiple UEs that share data, each of multiple UEs that transmit the same data, and shared UE may be interpreted as interchangeable.

[0047] In the present disclosure, the terms radio quality, quality of a particular channel / RS, radio link quality, and received power range may be interpreted interchangeably.

[0048] In the present disclosure, the terms network (NW), base station, and IAB node may be interchangeable.

[0049] In the present disclosure, the terms UE, terminal, IAB node, mobile station, moving body, and vehicle may be interchangeable.

[0050] In the present disclosure, transmitting a channel / signal to multiple UEs, broadcast, multicast, and groupcast may be read interchangeably.

[0051] In the present disclosure, the terms data that the transmitting UE intends to transmit, target data, part or all of the target data, UL data, transport block, and traffic may be interpreted as interchangeable.

[0052] When a terminal UE and a cooperative UE transmit target data to a base station, each of the terminal UE and the cooperative UE may transmit a part or all of the target data, and the terminal UE and the cooperative UE as a whole may transmit the entire target data. The base station / transmitting UE may schedule the cooperative UE to transmit / receive a part or all of the target data. Multiple UEs in a UE group may each transmit different parts of the target data. Multiple UEs in a UE group may each transmit multiple redundancy versions (RVs) based on the target data.

[0053] The base station / transmitting UE may allocate resources for data transmission / reception to the transmitting UE and cooperating UEs (may schedule data transmission / reception) based on information identifying the UEs in the UE group (e.g., destination ID / source ID).

[0054] The base station / transmitting UE may schedule data transmission / reception for some UEs in the UE group, which may be UEs corresponding to a quality (measurement result / error rate) above a threshold.

[0055] In the present disclosure, beam, spatial domain filter, antenna beam, base station transmit beam, UE receive beam, spatial domain receive filter, and spatial domain transmit filter may be interpreted interchangeably.

[0056] In the present disclosure, adjacent beams of a particular beam, neighboring beams of a particular beam, peripheral beams of a particular beam, other beams of a particular beam, and beams associated with a particular beam may be read interchangeably.

[0057] The association of one or more adjacent beams for each base station antenna beam may be configured by higher layer signaling or may be specified in a specification.

[0058] The base station may receive measurement results of multiple beams from each of multiple UEs. Based on the measurement results, the base station determines a combination of multiple UEs to which MU-MIMO is applied for one base station transmission beam, and channels (DL channels / UL channels) for multiple UEs may be transmitted in the same time resource and the same frequency resource and multiplexed in the spatial direction (spatial domain).

[0059] For multiple UEs associated with the same base station transmit beam, the base station may determine some combinations of the multiple UEs, and may allocate the same time resources and the same frequency resources to channels for UEs in the combination among the multiple UEs, and may allocate different time resources and the same frequency resources to channels for UEs outside the combination among the multiple UEs.

[0060] By using spatial multiplexing (MU-MIMO) for a combination of multiple UEs that are far apart from each other, the spatial correlation of signals from multiple UEs can be reduced, improving signal separation performance, and thereby increasing the number of multiplexed users.

[0061] A plurality of UEs in a combination may be assigned multiple DMRSs that are orthogonal to each other. The multiple DMRSs may be different sequences within the same CDM group, and different orthogonal cover codes (OCCs) may be applied to the multiple DMRSs.

[0062] The base station may use the best beam reported by the UE (the beam corresponding to the best measurement result among multiple measured beams) for MU-MIMO (transmission of DL channel) for the UE. The UE may receive the DL channel using the reported best beam.

[0063] The base station may change the base station transmission beam for the UEs in the combination (may use a beam other than the best beam). The UE may receive a DL channel using a beam other than the best beam among the multiple beams reported. For a first UE and a second UE that have reported the same best beam, if the measurement result of the first beam other than the best beam in the first UE is higher than a threshold and the measurement result of the second beam other than the best beam is lower than a threshold, and if the measurement result of the second beam other than the best beam in the second UE is higher than a threshold and the measurement result of the first beam other than the best beam is lower than a threshold, the base station may use the first beam for the first UE and the second beam for the second UE.

[0064] The MU-MIMO in the present disclosure may be applied to either the DL channel or the UL channel.

[0065] Each embodiment may be applied to IoT devices or other services / traffic types.

[0066] First Embodiment Data sharing method 1 between multiple UEs

[0067] The UE uses a path (air interface, access channel, channel, link) that does not use the NR Uu for data sharing. The path that does not use the NR Uu may be a sidelink. The NR Uu may be the air interface (access channel) between the UE and the gNB.

[0068] <<Aspect 1-1>> Cooperative UE configuration (grouping) method

[0069] [Aspect 1-1-1] The base station may group multiple UEs (may set / instruct destination / UE group).

[0070] The base station sets / instructs the UE an ID corresponding to the cell / TRP / beam. The ID may be a common value for multiple UEs, or may be a unique (individual) value for each UE. For example, the ID may be the ID of a UE group, or the ID of a specific UE. The ID may be set / instructed in response to a specific trigger, or may be set / instructed periodically by configuration information (system information). The specific trigger may be a scheduling request (SR) from the transmitting UE.

[0071] If the sidelink is used for data sharing, the transmitting UE may use the configured ID as a destination to indicate the cooperating UE. The destination may be an L2 destination.

[0072] If the sidelink is used for data sharing, the transmitting UE may use the ID as a destination (L2 destination) to indicate the cooperating UE. If the ID is common to multiple UEs, the transmitting UE may send the target data to one or more cooperating UEs by broadcast (multicast). If the ID is unique to the UE, the transmitting UE may send the target data to one cooperating UE by unicast.

[0073] When a transmitting UE transmits target data to a cooperative UE, it may use sidelink mode 1 / 2. In sidelink mode 1, the transmission resources for the target data may be configured / instructed by the gNB using the SL-RNTI. In sidelink mode 2, the transmission resources for the target data may be discovered / determined by the transmitting UE. When sidelink mode 1 is used, the transmitting UE may request a resource allocation for grouping from the base station (transmit an SR). The base station may notify / instruct the resource allocation for grouping to the transmitting UE and UEs that may potentially be cooperative UEs. UEs that may potentially be cooperative UEs may be UEs that correspond to the same cell / TRP / beam / received power value (range) as the transmitting UE. The base station may notify / instruct the resource allocation using the SL-RNTI and notify information for grouping using the allocated resources. The information for grouping may include an ID / destination. The base station may notify / instruct the resource allocation in response to the SR from the UE.

[0074] The transmitting UE may receive at least one of information (HARQ-ACK information) indicating whether the cooperative UE has successfully received the target data in response to transmission of the target data to the cooperative UE, and the ID of the cooperative UE (e.g., L2 source ID).

[0075] The transmitting UE may report to the base station the IDs of the cooperative UEs that have successfully received the target data.

[0076] The ID may be associated with an identifier (e.g., C-RNTI) set from the NW.

[0077] In the example of FIG. 2A, UE#0 is the transmitting UE, and UE#1 and #2 are cooperative UEs. Source IDs of 00, 01, and 10 are set / instructed for UE#0, #1, and #2, respectively. A common destination ID of 11 is set / instructed for UE#0, #1, and #2. Then, as shown in the example of FIG. 2B, UE#0 transmits target data to UE#1 and #2 using the destination ID. In response to receiving the target data, UE#1 and #2 may each transmit HARQ-ACK information together with their source ID to UE#0. When UE#0 receives ACKs from UE#1 and #2, UE#0 may recognize that UE#1 and #2 share the target data. UE#0 may report information indicating UE#1 and #2 that share the target data to the base station.

[0078] [Aspect 1-1-2] The transmitting UE may perform the grouping (probe / determine the destination).

[0079] The transmitting UE may transmit target data or a specific signal / channel for the purpose of probing for cooperating UEs. For example, the transmitting UE may transmit the target data using a sidelink. The destination ID may be a value not associated with a specific UE (a specific value, a value indicating an unspecified UE), a value outside the range applicable to the UE, or a pre-defined / specified value. Some or all UEs may be able to receive the target data addressed to this destination ID or may attempt to receive the target data.

[0080] The transmitting UE may receive at least one of information (HARQ-ACK information) indicating whether the cooperative UE has successfully received the target data in response to transmission of the target data to the cooperative UE, and the ID of the cooperative UE (e.g., L2 source ID).

[0081] The transmitting UE may report to the base station the IDs of the cooperative UEs that have successfully received the target data.

[0082] In the example of FIG. 3A, UE#0 is the transmitting UE, and UE#1 and #2 are cooperative UEs. Source IDs of 00, 01, and 10 are set / instructed to UE#0, #1, and #2, respectively. Then, as shown in the example of FIG. 3B, UE#0 transmits target data to UE#1 and #2 using destination ID=99. All UEs attempt to receive the target data addressed to destination ID=99. In response to receiving the target data, UE#1 and #2 each transmit HARQ-ACK information along with their source ID to UE#0. When UE#0 receives ACKs from UE#1 and #2, UE#0 recognizes that UE#1 and #2 share the target data. UE#0 may report information indicating UE#1 and #2 with which the target data is shared to the base station.

[0083] [Aspect 1-1-3] A UE other than the transmitting UE may perform grouping (probe / determine destination).

[0084] The cooperative UE may transmit a specific signal for the purpose of UE discovery / grouping. The sidelink may be used to transmit the specific signal. The destination ID used in the specific signal may be a value set / instructed by the base station as in example 1-1-1, or may be a specific value as in example 1-1-2.

[0085] In response to receiving the specific signal, the transmitting UE may receive at least one of information indicating whether the reception was successful (HARQ-ACK information) and the ID of the transmitting UE (e.g., L2 source ID).

[0086] If the transmitting UE successfully receives a specific signal from a cooperative UE, the transmitting UE may report the ID of the cooperative UE to the base station.

[0087] In the example of FIG. 4A, UE#0 is the transmitting UE, and UE#1 and #2 are cooperative UEs. Source IDs of 00, 01, and 10 are set / instructed for UE#0, #1, and #2, respectively. A common destination ID of 11 is set for UE#0, #1, and #2. Thereafter, in the example of FIG. 4B, if UE#0 and #1 are already in a UE group, UE#2 transmits a specific signal to UE#0 and #1 using the destination ID. In response to receiving the specific signal, UE#0 transmits HARQ-ACK information to UE#2 together with its own source ID, and adds UE#2 to the UE group. UE#0 may also transmit target data to UE#1 and #2 in the UE group using the destination ID. In response to receiving the target data, UE#1 and #2 each transmit HARQ-ACK information to UE#0 together with their own source ID. When UE#0 receives ACKs from both UE#1 and UE#2, UE#0 recognizes that UE#1 and UE#2 share the target data. UE#0 may report information indicating UE#1 and UE#2 that share the target data to the base station, or may report information indicating UE#2 (source ID=10) that has been added to the UE group to the base station.

[0088] [Aspect 1-1-4] The groupings may be preset or may be specified by a specification.

[0089] For each UE, a destination ID (for broadcast / unicast) may be set in advance or may be defined in the specifications.

[0090] Each UE may be configured with its own destination ID and the destination IDs of other UEs.

[0091] The transmitting UE may use the destination ID to transmit the target data to the cooperating UE.

[0092] The transmitting UE may receive at least one of information (HARQ-ACK information) indicating whether the cooperative UE has successfully received the target data in response to transmission of the target data to the cooperative UE, and the ID of the cooperative UE (e.g., L2 source ID).

[0093] The transmitting UE may report to the base station the IDs of the cooperative UEs that have successfully received the target data.

[0094] In the example of FIG. 5A, UE#0 is a transmitting UE, and UE#1 and #2 are cooperative UEs. Source IDs of 00, 01, and 10 are set for UE#0, #1, and #2, respectively. Destination IDs of 20, 21, and 22 are set for UE#0, #1, and #2, respectively. UE#0 is set with destination IDs of 21 and 22 of other UEs (cooperative UEs) in the UE group in addition to its own destination ID of 20. Then, as shown in the example of FIG. 5B, UE#0 transmits target data to UE#1 and #2 using the destination IDs of the cooperative UEs. In response to receiving the target data, UE#1 and #2 may each transmit HARQ-ACK information together with their source ID to UE#0. When UE#0 receives ACKs from UE#1 and #2, respectively, UE#0 may recognize that UE#1 and #2 share the target data. UE#0 may report information indicating UE#1 and #2 that share the target data to the base station.

[0095] <<Aspect 1-2>> Transmission resource allocation method for cooperative UEs

[0096] [Aspect 1-2-1] The base station may directly configure / instruct all UEs (transmitting UEs and cooperative UEs) to use transmission resources (UL transmission resources) for transmitting target data to the base station. The base station may also allocate transmission resources to the transmitting UEs and cooperative UEs. If the base station knows the existence / ID of the cooperative UEs (e.g., by aspect 1-1), the base station may allocate transmission resources to the transmitting UEs and cooperative UEs.

[0097] The base station may schedule the same time resources and different or the same frequency resources for each of multiple UEs using control information (e.g., DCI). In the example of Figure 6A, the UE group includes transmitting UE #1 and cooperative UEs #2 and #3. UE #1, #2, and #3 receive DCI #1, #2, and #3, respectively. DCI #1, #2, and #3 schedule PUSCH #1, #2, and #3, respectively. UE #1, #2, and #3 receive PUSCH #1, #2, and #3, respectively.

[0098] A base station may schedule transmission resources for multiple UEs using one control information (e.g., DCI). In the example of Figure 6B, the UE group includes transmitting UE #1 and cooperative UEs #2 and #3. UE #1, #2, and #3 each receive DCI #0. DCI #0 schedules PUSCHs #1, #2, and #3. UE #1, #2, and #3 receive PUSCHs #1, #2, and #3, respectively.

[0099] The base station may schedule some of the UEs in the group based on the radio quality corresponding to each UE, for example, the base station may not schedule the transmitting UEs but may schedule the cooperating UEs.

[0100] [Aspect 1-2-2] The base station may configure / instruct only the transmitting UE of the UE group to configure / instruct the transmission resources (UL transmission resources) (allocation) of the target data from the UE to the base station. The transmitting UE may configure / instruct the cooperative UE to configure / instruct the transmission resources (allocation) of the target data. The base station may configure / instruct the transmitting UE to provide information regarding the transmission resources of the transmitting UE and information regarding the transmission resources of the cooperative UE. The transmitting UE may configure / instruct the cooperative UE to provide information regarding the transmission resources of the cooperative UE. The information regarding the transmission resources (allocation) may include at least one of a frequency domain resource allocation and a time domain resource allocation. The transmitting UE may configure / instruct / send / notify the information regarding the transmission resources of the cooperative UE directly to the cooperative UE (e.g., using a sidelink).

[0101] A base station may schedule transmission resources for multiple UEs using one control information (e.g., DCI). In the example of FIG. 7, the UE group includes transmitting UE #1 and cooperative UEs #2 and #3. UE #1 receives DCI #0. DCI #0 includes resource allocation (schedule) information for PUSCH #1, #2, and #3. UE #1 transmits resource allocation information for PUSCH #2 to UE #2 using the sidelink. UE #1 transmits resource allocation information for PUSCH #3 to UE #3 using the sidelink. UE #1, #2, and #3 receive PUSCH #1, #2, and #3, respectively.

[0102] <<Aspects 1-3>> Request method for cooperative UE

[0103] The transmitting UE may transmit a channel / signal including an SR and a request for cooperative transmission to the base station, and the base station may explicitly or implicitly determine whether to permit cooperative transmission based on the UE capability from the transmitting UE.

[0104] The transmitting UE may voluntarily share the target data with the cooperative UE (e.g., using sidelink mode 2) before transmitting the SR (or may voluntarily transmit the target data to the cooperative UE). The transmitting UE may share the target data with the cooperative UE after transmitting the SR. The transmitting UE may voluntarily share the target data with the cooperative UE (e.g., using sidelink mode 2) after transmitting the SR. The base station may trigger the transmitting UE / cooperative UE to share the target data (e.g., using sidelink mode 1) in response to receiving the SR.

[0105] The transmitting UE may transmit an SR, or the transmitting UE and the cooperative UE may each transmit an SR. The transmitting UE and the cooperative UE may each transmit an SR simultaneously. Of the UE group, a UE corresponding to a radio quality equal to or higher than a threshold may transmit an SR, or a UE corresponding to the highest (best) radio quality may transmit an SR.

[0106] According to this embodiment, the target data of the transmitting UE is shared with the cooperative UE without going through the base station, so that even if the wireless quality between the transmitting UE and the base station is low (the distance is long), the target data is more likely to be shared with the cooperative UE.

[0107] <Second embodiment> Data sharing method 2 between multiple UEs

[0108] The UE uses the NR Uu for data sharing. The path using the NR Uu may be an uplink or a downlink.

[0109] <<Aspect 2-1>> Data sharing and resource allocation method among multiple UEs

[0110] The transmitting UE may transmit repetitions of the target data. In this case, the cooperating UE may monitor / receive the first repetition from the transmitting UE and transmit the second and subsequent repetitions. If the cooperating UE fails to receive the first repetition, it may monitor / receive the next repetition.

[0111] Control information (e.g., DCI) for each cooperative UE may schedule monitoring / transmission resources for the cooperative UE individually, or one control information (e.g., DCI) may schedule monitoring / transmission resources for multiple UEs.

[0112] The base station may explicitly or implicitly inform the cooperative UE of the resources for monitoring / transmission. For example, the base station may inform the cooperative UE of two time resources, one for monitoring and the other for transmission.

[0113] In the example of FIG. 8, the UE group includes transmitting UE #1 and cooperative UEs #2 and #3. UE #1, #2, and #3 receive DCI #1, #2, and #3, respectively. DCI #1 schedules repetitions of PUSCH #1. DCI #2 schedules monitoring / reception of the first repetition of PUSCH #1 and transmission of PUSCH #2. DCI #3 schedules monitoring / reception of the first repetition of PUSCH #1 and transmission of PUSCH #3. UE #1 transmits target data using repetitions of PUSCH #1. UE #2 receives the target data in the first repetition of PUSCH #1 and transmits the target data in PUSCH #2. UE #3 receives the target data in the first repetition of PUSCH #1 and transmits the target data in PUSCH #3. Each of PUSCH #2 and #3 may be transmitted in the same time resource as the second and subsequent repetitions of PUSCH #1.

[0114] <<Aspect 2-2>> How to request coordinated transmission

[0115] The transmitting UE may transmit a channel / signal including an SR and a request for cooperative transmission to the base station, and the base station may explicitly or implicitly determine whether to permit cooperative transmission based on the UE capability from the transmitting UE.

[0116] According to this embodiment, the base station schedules the transmission of the transmitting UE and the transmission and reception of the cooperating UE, thereby reducing the load on the transmitting UE.

[0117] <Third embodiment> When DL signal measurements are performed, the base station may explicitly configure / instruct reporting of neighboring beams for a specific beam according to the information of the specific beam configured for the UE. The DL signal may be a DL reference signal, SSB / CSI-RS.

[0118] In the example of Figure 9, the base station configures / instructs UE #1 to use base station antenna beam #1 (TCI state corresponding to base station antenna beam #1). In this case, the base station may configure / instruct UE #1 to report measurement results of adjacent beams (base station antenna beams #0 and #2) of base station antenna beam #1. The adjacent beams may be notified using the TCI state (e.g., RRC IE TCI-State). The DL signal used for measurement may be notified to the UE.

[0119] The base station may instruct one or more associated UEs to report neighboring beams. The associated UEs may be UEs configured / instructed to use a specific beam. In the example of Figure 10, the associated UEs may be UEs #1 to #6 using antenna beam #1.

[0120] The UE may include the measurement results of a specific beam / adjacent beam in the report according to the reporting configuration / instruction. Even if a threshold is configured by the measurement object information element (e.g., MeasObjectNR) and the reporting configuration information element (e.g., ReportConfigNR), the UE may report the measurement results of the specific beam / adjacent beam regardless of whether the measurement results of the specific beam / adjacent beam are equal to or greater than the threshold. The UE may report the measurement results of all beams configured for measurement.

[0121] The base station may determine a combination of UEs for MU-MIMO based on the content of the report. For example, the base station determines whether the distances between multiple UEs are large based on the report, and combines multiple UEs that are large in distance. In the example of Figure 10, if the report from UE #1 indicates that the received power of base station antenna beam #0 is higher than a threshold and the received power of base station antenna beam #2 is lower than a threshold (or the received power of base station antenna beam #0 is higher than the received power of base station antenna beam #2), and if the report from UE #4 indicates that the received power of base station antenna beam #2 is higher than a threshold and the received power of base station antenna beam #0 is lower than a threshold (or the received power of base station antenna beam #2 is higher than the received power of base station antenna beam #0), the base station determines a combination of UE #1 and #4.

[0122] By having the UE report the measurement results regardless of the measurement results, the base station can estimate the positional relationship of the UE, determine the MU-MIMO combination, and so on, from multiple measurement results.

[0123] According to this embodiment, the UE can measure multiple (all) beams by measuring DL signals from the base station, and the base station can appropriately determine the combination of UEs for spatial multiplexing (MU-MIMO) based on the measurement results.

[0124] <Fourth embodiment> The UE may measure UL signals from other UEs and report the measurement results to the base station. The UL signals may be UL reference signals, SRS.

[0125] <<Aspect 4-1>> The base station may configure / instruct the UE on resources for UL signals from other UEs.

[0126] The base station may configure / instruct one UE (measuring UE, e.g., UE #1) among multiple UEs that are candidates for MU-MIMO combinations to measure UL signals from another UE (measurement target UE, e.g., UE #2) among the multiple UEs.

[0127] The base station may transmit to the measuring UE (UE#1) UE-specific configuration to be transmitted to the measurement target UE (UE#2) for UL signal transmission.

[0128] The measuring UE may perform measurements in the configured UL signal resources and report the results to the base station. The report content may be configured by a report configuration information element (e.g., ReportConfigNR). The report content may be the measurement result (e.g., received power) or the result of a determination as to whether the measuring UE and the measurement target UE are suitable for MU-MIMO combination. If the measurement result is lower than a threshold, the measuring UE may determine that the measuring UE and the measurement target UE are suitable for MU-MIMO combination. Information about multiple measurement target UEs may be configured for the measuring UE. The measuring UE may measure UL signals from multiple UEs and report the measurement results / determination results for the multiple UEs.

[0129] The base station may determine the combination of UEs for MU-MIMO depending on the content of the report.

[0130] <<Aspect 4-2>> The base station does not need to configure / instruct the UE on resources for UL signals from other UEs.

[0131] When a UE is configured to transmit an UL signal, the UE may determine a resource for an UL signal from another UE based on the configuration and perform measurements on the resource. For example, the UE may perform measurements (of UL signals from other UEs) at a timing (period and offset) different from the timing configured for transmitting the UL signal. The UE may be triggered to start / stop measurements by the base station.

[0132] If the measurement result is equal to or greater than the threshold, the UE may report at least one of the resource corresponding to the measurement result and the time corresponding to the measurement result. The resource may be a system frame number (SFN), a subframe number, or a slot number. The report content may be the measurement result (e.g., received power) or a determination result as to whether the measuring UE and the measurement target UE are suitable for MU-MIMO combination.

[0133] The base station may determine the combination of UEs for MU-MIMO depending on the content of the report.

[0134] According to this embodiment, the UE can measure signals from other UEs, and the base station can appropriately determine the combination of UEs for spatial multiplexing (MU-MIMO) based on the measurement results.

[0135] <Fifth embodiment> A plurality of UEs may be grouped (may form a UE group). A UE may receive signals / channels / control information transmitted from other UEs and determine / identify UEs in the UE group based on the quality of the received signals / channels. The signals / channels transmitted from other UEs may be at least one of a synchronization signal (e.g., sidelink (S)-SSB (S-SS / SPBCH block)), a control channel (e.g., physical sidelink control channel (PSCCH)), a reference signal (e.g., SRS), and HARQ-ACK information.

[0136] The measuring UE may estimate a separation distance between the measuring UE and the target UE based on the signal from the target UE, and may report information about the separation distance to the base station according to at least one of the following reporting methods 1 to 4:

[0137] [Report method 1] When reporting grouping information to the base station, the UE reports information on the separation distance to the base station.

[0138] [Report method 2] When the UE receives a request for reporting from the base station, the UE reports information about the separation distance to the base station.

[0139] [Report method 3] The UE reports information about the separation distance to the base station according to the method / period set / instructed by the base station.

[0140] [Reporting method 4] When a UE requests resources for PUSCH transmission (transmits an SR), the UE reports information about the separation distance to the base station.

[0141] The base station may determine the combination of UEs for MU-MIMO depending on the content of the report.

[0142] According to this embodiment, the UE can measure signals from other UEs, and the base station can appropriately determine the combination of UEs for spatial multiplexing (MU-MIMO) based on the measurement results.

[0143] Sixth Embodiment Higher layer parameters (RRC IEs) / UE capabilities corresponding to the functions (features) in each of the above embodiments may be defined. The UE capabilities may indicate that the functions are supported.

[0144] A UE configured with higher layer parameters corresponding to the function (enabling the function) may perform the function. It may also be specified that "a UE not configured with higher layer parameters corresponding to the function shall not perform the function (for example, in accordance with Rel. 15 / 16)."

[0145] A UE that reports a UE capability indicating that it supports the function may perform the function. It may also be specified that "a UE that does not report a UE capability indicating that it supports the function shall not perform the function (e.g., in accordance with Rel. 15 / 16)."

[0146] If the UE reports a UE capability indicating that it supports the function and the corresponding upper layer parameter is configured, the UE may perform the function. It may also be specified that "if the UE does not report a UE capability indicating that it supports the function or if the corresponding upper layer parameter is not configured, the UE shall not perform the function (e.g., in accordance with Rel. 15 / 16)."

[0147] The UE capability may indicate whether the UE supports the feature.

[0148] The capability may be a capability related to cooperative transmission in data transmission. The UE capability may indicate whether the UE supports cooperative transmission in data transmission. The UE capability may indicate whether the UE supports grouping / destination setting by a base station. The UE capability may indicate whether the UE supports grouping / destination setting by a base station.

[0149] The capability may be measurement / reporting for determining the combination of multiple UEs in MU-MIMO. The UE capability may indicate whether or not the UE supports measurement / reporting using DL signals (e.g., SSB / CSI-RS) / UL signals (e.g., SRS) for determining the combination of multiple UEs in MU-MIMO. The UE capability may indicate whether or not the UE supports grouping of multiple UEs and whether or not the UE supports measurement / reporting for determining the combination of multiple UEs in MU-MIMO.

[0150] The UE may report UE capabilities for a feature for each frequency it supports. The UE capabilities may indicate whether the UE supports the feature for all frequencies. The UE capabilities may indicate whether the UE supports the feature for each frequency / band. The UE capabilities may indicate whether the UE supports the feature for each frequency range (e.g., FR1 / FR2).

[0151] The UE may report UE capabilities related to functions for the duplex modes it supports. The UE capabilities may indicate whether the UE supports the functions. The UE capabilities may indicate whether the UE supports the functions for each duplex mode (TDD / FDD).

[0152] According to this embodiment, the UE can achieve the above functions while maintaining compatibility with existing specifications.

[0153] (wireless communication system) The configuration of a wireless communication system according to an embodiment of the present disclosure will be described below. In this wireless communication system, communication is performed using any one of the wireless communication methods according to the above embodiments of the present disclosure or a combination thereof.

[0154] 11 is a diagram illustrating an example of a schematic configuration of a wireless communication system according to an embodiment. The wireless communication system 1 may be a system that realizes communication using Long Term Evolution (LTE) or 5th generation mobile communication system New Radio (5G NR) specified by the Third Generation Partnership Project (3GPP).

[0155] The wireless communication system 1 may also support dual connectivity between multiple Radio Access Technologies (RATs) (Multi-RAT Dual Connectivity (MR-DC)). MR-DC may include dual connectivity between LTE (Evolved Universal Terrestrial Radio Access (E-UTRA)) and NR (E-UTRA-NR Dual Connectivity (EN-DC)), dual connectivity between NR and LTE (NR-E-UTRA Dual Connectivity (NE-DC)), etc.

[0156] In EN-DC, the LTE (E-UTRA) base station (eNB) is the master node (MN), and the NR base station (gNB) is the secondary node (SN). In NE-DC, the NR base station (gNB) is the MN, and the LTE (E-UTRA) base station (eNB) is the SN.

[0157] The wireless communication system 1 may support dual connectivity between multiple base stations within the same RAT (for example, dual connectivity in which both the MN and the SN are NR base stations (gNBs) (NR-NR Dual Connectivity (NN-DC))).

[0158] The wireless communication system 1 may include a base station 11 that forms a macrocell C1 with a relatively wide coverage, and base stations 12 (12a-12c) that are located within the macrocell C1 and form small cells C2 that are smaller than the macrocell C1. A user terminal 20 may be located within at least one of the cells. The locations and numbers of the cells and user terminals 20 are not limited to the embodiment shown in the figure. Hereinafter, when there is no need to distinguish between the base stations 11 and 12, they will be collectively referred to as base station 10.

[0159] The user terminal 20 may be connected to at least one of the multiple base stations 10. The user terminal 20 may utilize at least one of carrier aggregation (CA) using multiple component carriers (CC) and dual connectivity (DC).

[0160] Each CC may be included in at least one of a first frequency band (Frequency Range 1 (FR1)) and a second frequency band (Frequency Range 2 (FR2)). The macro cell C1 may be included in FR1, and the small cell C2 may be included in FR2. For example, FR1 may be a frequency band of 6 GHz or less (sub-6 GHz), and FR2 may be a frequency band above 24 GHz (above-24 GHz). Note that the frequency bands and definitions of FR1 and FR2 are not limited to these, and for example, FR1 may be a frequency band higher than FR2.

[0161] Furthermore, the user terminal 20 may perform communication using at least one of Time Division Duplex (TDD) and Frequency Division Duplex (FDD) in each CC.

[0162] The multiple base stations 10 may be connected by wire (for example, optical fiber conforming to the Common Public Radio Interface (CPRI), an X2 interface, or the like) or wirelessly (for example, NR communication). For example, when NR communication is used as a backhaul between the base stations 11 and 12, the base station 11 corresponding to the upper station may be called an Integrated Access Backhaul (IAB) donor, and the base station 12 corresponding to the relay station (relay) may be called an IAB node.

[0163] The base station 10 may be connected to the core network 30 directly or via another base station 10. The core network 30 may include, for example, at least one of an Evolved Packet Core (EPC), a 5G Core Network (5GCN), a Next Generation Core (NGC), and the like.

[0164] The user terminal 20 may be a terminal compatible with at least one of communication methods such as LTE, LTE-A, and 5G.

[0165] An Orthogonal Frequency Division Multiplexing (OFDM)-based radio access scheme may be used in the radio communication system 1. For example, Cyclic Prefix OFDM (CP-OFDM), Discrete Fourier Transform Spread OFDM (DFT-s-OFDM), Orthogonal Frequency Division Multiple Access (OFDMA), Single Carrier Frequency Division Multiple Access (SC-FDMA), or the like may be used in at least one of the downlink (DL) and uplink (UL).

[0166] The radio access scheme may also be called a waveform. Note that in the wireless communication system 1, other radio access schemes (for example, other single-carrier transmission schemes, other multi-carrier transmission schemes) may be used as the UL and DL radio access schemes.

[0167] In the wireless communication system 1, a downlink shared channel (Physical Downlink Shared Channel (PDSCH)) shared by each user terminal 20, a broadcast channel (Physical Broadcast Channel (PBCH)), a downlink control channel (Physical Downlink Control Channel (PDCCH)), etc. may be used as the downlink channel.

[0168] Furthermore, in the wireless communication system 1, an uplink shared channel (Physical Uplink Shared Channel (PUSCH)) shared by each user terminal 20, an uplink control channel (Physical Uplink Control Channel (PUCCH)), a random access channel (Physical Random Access Channel (PRACH)), etc. may be used as an uplink channel.

[0169] The PDSCH transmits user data, higher layer control information, System Information Block (SIB), etc. The PUSCH may transmit user data, higher layer control information, etc. Furthermore, the PBCH may transmit Master Information Block (MIB).

[0170] Lower layer control information may be transmitted by the PDCCH. The lower layer control information may include, for example, Downlink Control Information (DCI) including scheduling information for at least one of the PDSCH and the PUSCH.

[0171] Note that the DCI for scheduling the PDSCH may be referred to as a DL assignment, a DL DCI, etc., and the DCI for scheduling the PUSCH may be referred to as an UL grant, a UL DCI, etc. Note that the PDSCH may be interpreted as DL data, and the PUSCH may be interpreted as UL data.

[0172] A control resource set (CORESET) and a search space may be used to detect the PDCCH. The CORESET corresponds to resources to search for DCI. The search space corresponds to a search region and a search method for PDCCH candidates. One CORESET may be associated with one or more search spaces. The UE may monitor a CORESET associated with a certain search space based on the search space configuration.

[0173] One search space may correspond to PDCCH candidates corresponding to one or more aggregation levels. One or more search spaces may be called a search space set. Note that the terms "search space," "search space set," "search space setting," "search space set setting," "CORESET," "CORESET setting," etc. in the present disclosure may be read interchangeably.

[0174] The PUCCH may transmit uplink control information (UCI) including at least one of channel state information (CSI), acknowledgement information (which may be called, for example, Hybrid Automatic Repeat reQuest ACKnowledgement (HARQ-ACK), ACK / NACK, etc.), and scheduling request (SR). The PRACH may transmit a random access preamble for establishing a connection with a cell.

[0175] In the present disclosure, downlink, uplink, etc. may be expressed without adding "link." Also, various channels may be expressed without adding "Physical" to the beginning.

[0176] In the wireless communication system 1, a synchronization signal (SS), a downlink reference signal (DL-RS), etc. may be transmitted. In the wireless communication system 1, a cell-specific reference signal (CRS), a channel state information reference signal (CSI-RS), a demodulation reference signal (DMRS), a positioning reference signal (PRS), a phase tracking reference signal (PTRS), etc. may be transmitted as DL-RS.

[0177] The synchronization signal may be, for example, at least one of a Primary Synchronization Signal (PSS) and a Secondary Synchronization Signal (SSS). A signal block including the SS (PSS, SSS) and the PBCH (and DMRS for the PBCH) may be referred to as an SS / PBCH block, an SS Block (SSB), or the like. Note that the SS, SSB, and the like may also be referred to as reference signals.

[0178] Furthermore, in the wireless communication system 1, a sounding reference signal (SRS), a demodulation reference signal (DMRS), etc. may be transmitted as an uplink reference signal (UL-RS). Note that the DMRS may also be called a user equipment-specific reference signal (UE-specific reference signal).

[0179] (base station) 12 is a diagram showing an example of the configuration of a base station according to an embodiment. The base station 10 includes a control unit 110, a transceiver unit 120, a transceiver antenna 130, and a transmission line interface 140. Note that the base station may include one or more of each of the control unit 110, the transceiver unit 120, the transceiver antenna 130, and the transmission line interface 140.

[0180] In this example, the functional blocks of the characteristic parts of the present embodiment are mainly shown, and it may be assumed that the base station 10 also has other functional blocks necessary for wireless communication. Some of the processing of each unit described below may be omitted.

[0181] The control unit 110 performs overall control of the base station 10. The control unit 110 can be configured from a controller, a control circuit, and the like that are explained based on common understanding in the technical field to which the present disclosure relates.

[0182] The control unit 110 may control signal generation, scheduling (e.g., resource allocation, mapping), etc. The control unit 110 may control transmission and reception using the transceiver unit 120, the transceiver antenna 130, and the transmission path interface 140, measurement, etc. The control unit 110 may generate data to be transmitted as signals, control information, sequences, etc., and transfer them to the transceiver unit 120. The control unit 110 may perform call processing (setting up, releasing, etc.) of communication channels, status management of the base station 10, management of radio resources, etc.

[0183] The transceiver unit 120 may include a baseband unit 121, a radio frequency (RF) unit 122, and a measurement unit 123. The baseband unit 121 may include a transmission processing unit 1211 and a reception processing unit 1212. The transceiver unit 120 may be configured with a transmitter / receiver, an RF circuit, a baseband circuit, a filter, a phase shifter, a measurement circuit, a transceiver circuit, etc., which are described based on common understanding in the technical field related to the present disclosure.

[0184] The transmitting / receiving unit 120 may be configured as an integrated transmitting / receiving unit, or may be composed of a transmitting unit and a receiving unit. The transmitting unit may be composed of a transmission processing unit 1211 and an RF unit 122. The receiving unit may be composed of a reception processing unit 1212, an RF unit 122, and a measurement unit 123.

[0185] The transmitting and receiving antenna 130 can be configured from an antenna described based on common understanding in the technical field to which the present disclosure pertains, such as an array antenna.

[0186] The transceiver 120 may transmit the above-mentioned downlink channel, synchronization signal, downlink reference signal, etc. The transceiver 120 may receive the above-mentioned uplink channel, uplink reference signal, etc.

[0187] The transceiver 120 may form at least one of a transmission beam and a reception beam using digital beamforming (for example, precoding), analog beamforming (for example, phase rotation), or the like.

[0188] The transceiver 120 (transmission processing unit 1211) may perform Packet Data Convergence Protocol (PDCP) layer processing, Radio Link Control (RLC) layer processing (e.g., RLC retransmission control), Medium Access Control (MAC) layer processing (e.g., HARQ retransmission control), etc. on data, control information, etc. obtained from the control unit 110, and generate a bit string to be transmitted.

[0189] The transceiver 120 (transmission processor 1211) may perform transmission processing such as channel coding (which may include error correction coding), modulation, mapping, filtering, Discrete Fourier Transform (DFT) processing (if necessary), Inverse Fast Fourier Transform (IFFT) processing, precoding, and digital-to-analog conversion on the bit string to be transmitted, and output a baseband signal.

[0190] The transmitting / receiving unit 120 (RF unit 122) may perform modulation to a radio frequency band, filtering, amplification, etc. on the baseband signal, and transmit the radio frequency band signal via the transmitting / receiving antenna .

[0191] On the other hand, the transmitting / receiving unit 120 (RF unit 122) may perform amplification, filtering, demodulation to a baseband signal, etc. on the radio frequency band signal received by the transmitting / receiving antenna .

[0192] The transceiver 120 (reception processing unit 1212) may apply reception processing such as analog-to-digital conversion, Fast Fourier Transform (FFT) processing, Inverse Discrete Fourier Transform (IDFT) processing (if necessary), filtering, demapping, demodulation, decoding (which may include error correction decoding), MAC layer processing, RLC layer processing, and PDCP layer processing to the acquired baseband signal, thereby acquiring user data, etc.

[0193] The transceiver 120 (measurement unit 123) may perform measurements on the received signal. For example, the measurement unit 123 may perform Radio Resource Management (RRM) measurements, Channel State Information (CSI) measurements, etc. based on the received signal. The measurement unit 123 may measure received power (e.g., Reference Signal Received Power (RSRP)), received quality (e.g., Reference Signal Received Quality (RSRQ), Signal to Interference plus Noise Ratio (SINR), Signal to Noise Ratio (SNR)), signal strength (e.g., Received Signal Strength Indicator (RSSI)), propagation path information (e.g., CSI), etc. The measurement results may be output to the control unit 110.

[0194] The transmission path interface 140 may transmit and receive signals (backhaul signaling) between devices included in the core network 30, other base stations 10, etc., and may acquire and transmit user data (user plane data), control plane data, etc. for the user terminal 20.

[0195] The transmitting section and receiving section of the base station 10 in the present disclosure may be configured by at least one of the transmitting / receiving section 120, the transmitting / receiving antenna 130, and the transmission path interface 140.

[0196] The transceiver 120 may receive signals (eg, measurement results, determination results, destination ID, source ID) for determining a plurality of terminals (eg, a UE group) that share uplink data.

[0197] Based on the signal, the control unit 110 may control (e.g., configure, instruct, schedule) a first terminal among the plurality of terminals to either receive the uplink data from a second terminal among the plurality of terminals or transmit the uplink data to the second terminal.

[0198] The transceiver 120 may receive measurement results of any one of a plurality of downlink signals, a first uplink signal from another terminal, and a sidelink signal from another terminal.

[0199] The control unit 110 may control the transmission of a downlink channel or the reception of an uplink channel (e.g., MU-MIMO) using a beam (e.g., base station transmission beam / UE reception beam / spatial domain reception filter) and sequence (e.g., DMRS sequence) based on the report.

[0200] (user terminal) 13 is a diagram showing an example of the configuration of a user terminal according to one embodiment. The user terminal 20 includes a control unit 210, a transceiver unit 220, and a transmitting / receiving antenna 230. Note that the user terminal 20 may include one or more of each of the control unit 210, the transceiver unit 220, and the transmitting / receiving antenna 230.

[0201] Note that this example mainly shows functional blocks of the characteristic parts of the present embodiment, and it may be assumed that the user terminal 20 also has other functional blocks necessary for wireless communication. Some of the processing of each unit described below may be omitted.

[0202] The control unit 210 performs overall control of the user terminal 20. The control unit 210 can be configured from a controller, a control circuit, and the like that are explained based on common understanding in the technical field to which the present disclosure relates.

[0203] The control unit 210 may control signal generation, mapping, etc. The control unit 210 may also control transmission and reception, measurement, etc. using the transceiver unit 220 and the transceiver antenna 230. The control unit 210 may generate data, control information, sequences, etc. to be transmitted as signals, and transfer them to the transceiver unit 220.

[0204] The transceiver unit 220 may include a baseband unit 221, an RF unit 222, and a measurement unit 223. The baseband unit 221 may include a transmission processing unit 2211 and a reception processing unit 2212. The transceiver unit 220 may be configured from a transmitter / receiver, an RF circuit, a baseband circuit, a filter, a phase shifter, a measurement circuit, a transceiver circuit, etc., which are described based on common understanding in the technical field related to the present disclosure.

[0205] The transmitting / receiving unit 220 may be configured as an integrated transmitting / receiving unit, or may be composed of a transmitting unit and a receiving unit. The transmitting unit may be composed of a transmission processing unit 2211 and an RF unit 222. The receiving unit may be composed of a reception processing unit 2212, an RF unit 222, and a measurement unit 223.

[0206] The transmitting / receiving antenna 230 can be configured as an antenna described based on common understanding in the technical field to which the present disclosure pertains, such as an array antenna.

[0207] The transceiver 220 may receive the above-mentioned downlink channel, synchronization signal, downlink reference signal, etc. The transceiver 220 may transmit the above-mentioned uplink channel, uplink reference signal, etc.

[0208] The transceiver 220 may form at least one of a transmission beam and a reception beam using digital beamforming (for example, precoding), analog beamforming (for example, phase rotation), or the like.

[0209] The transceiver 220 (transmission processing unit 2211) may perform PDCP layer processing, RLC layer processing (e.g., RLC retransmission control), MAC layer processing (e.g., HARQ retransmission control), etc. on data, control information, etc. obtained from the control unit 210, and generate a bit string to be transmitted.

[0210] The transceiver 220 (transmission processor 2211) may perform transmission processing such as channel coding (which may include error correction coding), modulation, mapping, filtering, DFT processing (if necessary), IFFT processing, precoding, and digital-to-analog conversion on the bit string to be transmitted, and output a baseband signal.

[0211] Whether or not to apply DFT processing may be based on the setting of transform precoding. When transform precoding is enabled for a certain channel (e.g., PUSCH), the transceiver unit 220 (transmission processing unit 2211) may perform DFT processing as the transmission processing to transmit the channel using a DFT-s-OFDM waveform, and when transform precoding is not enabled, the transceiver unit 220 may not perform DFT processing as the transmission processing.

[0212] The transmitting / receiving unit 220 (RF unit 222) may perform modulation to a radio frequency band, filtering, amplification, etc. on the baseband signal, and transmit the radio frequency band signal via the transmitting / receiving antenna 230.

[0213] On the other hand, the transmitting / receiving unit 220 (RF unit 222) may perform amplification, filtering, demodulation to a baseband signal, etc. on the radio frequency band signal received by the transmitting / receiving antenna 230.

[0214] The transceiver 220 (reception processing unit 2212) may apply reception processing such as analog-to-digital conversion, FFT processing, IDFT processing (if necessary), filtering, demapping, demodulation, decoding (which may include error correction decoding), MAC layer processing, RLC layer processing, and PDCP layer processing to the acquired baseband signal to acquire user data, etc.

[0215] The transceiver 220 (measurement unit 223) may perform measurements on the received signal. For example, the measurement unit 223 may perform RRM measurement, CSI measurement, etc. based on the received signal. The measurement unit 223 may measure received power (e.g., RSRP), received quality (e.g., RSRQ, SINR, SNR), signal strength (e.g., RSSI), propagation path information (e.g., CSI), etc. The measurement results may be output to the control unit 210.

[0216] The transmitting section and receiving section of the user terminal 20 in the present disclosure may be configured by at least one of the transmitting / receiving section 220 and the transmitting / receiving antenna 230.

[0217] The transceiver 220 may receive signals (e.g., UL signals, sidelink signals, measurement results, determination results, destination IDs, source IDs) for determining which terminals share uplink data (e.g., transport blocks).

[0218] Based on the signal, the control unit 210 may control (e.g., setting, instructing, scheduling, data transmission, data reception, transmission / reception of an UL channel, transmission / reception of a sidelink channel) either the reception of the uplink data from another terminal among the plurality of terminals or the transmission of the uplink data to the other terminal.

[0219] The signal may include a measurement result by the other terminal. The control unit 210 may determine an identifier (e.g., a destination ID, a source ID) corresponding to each of the plurality of terminals based on the measurement result.

[0220] The control unit 210 may control the transmission of control information (for example, sidelink control information) that instructs the other terminal to receive the uplink data and transmit the uplink data.

[0221] The transceiver 220 may receive one of the multiple repetitions of the uplink data, and the controller 210 may control transmission of the received repetition.

[0222] The transceiver 220 may receive any one of a plurality of downlink signals, a first uplink signal from another terminal, and a sidelink signal from another terminal.

[0223] The control unit 210 may report the measurement results of the signal and control the reception of the downlink channel or the transmission of the uplink channel (e.g., MU-MIMO) using a beam (e.g., base station transmission beam / UE reception beam / spatial domain reception filter) and sequence (e.g., DMRS sequence) based on the report.

[0224] The plurality of downlink signals may be associated with a plurality of beams, respectively. The transceiver unit 220 may receive a configuration related to measurements of the plurality of downlink signals and receive the plurality of downlink signals based on the configuration. The control unit 210 may report a plurality of measurement results corresponding to the plurality of downlink signals, respectively.

[0225] The transceiver 220 may receive information about at least one resource of the first uplink signal and the second uplink signal transmitted from the terminal, and may receive the first uplink signal based on the information. The controller 210 may report a measurement result corresponding to the first uplink signal.

[0226] The transceiver 220 may receive the sidelink signal, and the controller 210 may report measurement results corresponding to the sidelink signal.

[0227] (Hardware configuration) The block diagrams used to explain the above embodiments show functional blocks. These functional blocks (components) are realized by any combination of at least one of hardware and software. Furthermore, the method for realizing each functional block is not particularly limited. That is, each functional block may be realized using a single device that is physically or logically coupled, or may be realized using two or more physically or logically separated devices that are directly or indirectly connected (for example, using wires, wirelessly, etc.) and these multiple devices. The functional block may also be realized by combining the single device or multiple devices with software.

[0228] Here, the functions include, but are not limited to, judgment, determination, judgment, calculation, computation, processing, derivation, investigation, search, confirmation, reception, transmission, output, access, resolution, selection, election, establishment, comparison, assumption, expectation, deeming, broadcasting, notifying, communicating, forwarding, configuring, reconfiguring, allocating, mapping, and assignment. For example, a functional block (component) that performs transmission may be called a transmitting unit, transmitter, etc. As mentioned above, the implementation method of each is not particularly limited.

[0229] For example, a base station, a user terminal, etc. according to an embodiment of the present disclosure may function as a computer that performs processing of the wireless communication method of the present disclosure. Fig. 14 is a diagram illustrating an example of the hardware configuration of a base station and a user terminal according to an embodiment. The above-described base station 10 and user terminal 20 may be physically configured as a computer device including a processor 1001, a memory 1002, a storage 1003, a communication device 1004, an input device 1005, an output device 1006, a bus 1007, etc.

[0230] In this disclosure, terms such as apparatus, circuit, device, section, unit, etc. may be read interchangeably. The hardware configurations of the base station 10 and the user terminal 20 may be configured to include one or more of the devices shown in the drawings, or may be configured to exclude some of the devices.

[0231] For example, although only one processor 1001 is shown, there may be multiple processors. Furthermore, processing may be performed by one processor, or processing may be performed by two or more processors simultaneously, serially, or in other ways. Furthermore, processor 1001 may be implemented by one or more chips.

[0232] Each function in the base station 10 and the user terminal 20 is realized, for example, by loading predetermined software (programs) onto hardware such as a processor 1001 and a memory 1002, causing the processor 1001 to perform calculations, control communication via the communication device 1004, and control at least one of reading and writing data in the memory 1002 and the storage 1003.

[0233] The processor 1001, for example, runs an operating system to control the entire computer. The processor 1001 may be configured as a central processing unit (CPU) including an interface with peripheral devices, a control device, an arithmetic unit, a register, etc. For example, at least a part of the above-mentioned control unit 110 (210), transmission / reception unit 120 (220), etc. may be realized by the processor 1001.

[0234] The processor 1001 also reads programs (program codes), software modules, data, etc. from at least one of the storage 1003 and the communication device 1004 into the memory 1002, and executes various processes in accordance with these. The programs used are those that cause a computer to execute at least some of the operations described in the above-described embodiments. For example, the control unit 110 (210) may be realized by a control program stored in the memory 1002 and running on the processor 1001, and the other functional blocks may be realized in a similar manner.

[0235] The memory 1002 is a computer-readable recording medium and may be configured by at least one of, for example, a read-only memory (ROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), a random access memory (RAM), or other suitable storage medium. The memory 1002 may also be referred to as a register, a cache, a main memory, or the like. The memory 1002 may store executable programs (program codes), software modules, and the like for implementing a wireless communication method according to an embodiment of the present disclosure.

[0236] Storage 1003 is a computer-readable recording medium and may be constituted by at least one of, for example, a flexible disk, a floppy disk, a magneto-optical disk (e.g., a compact disc (e.g., a Compact Disc ROM (CD-ROM)), a digital versatile disc, a Blu-ray disc), a removable disk, a hard disk drive, a smart card, a flash memory device (e.g., a card, stick, key drive), a magnetic stripe, a database, a server, or other suitable storage medium. Storage 1003 may also be referred to as a secondary storage device.

[0237] The communication device 1004 is hardware (transmission / reception device) for communicating between computers via at least one of a wired network and a wireless network, and is also referred to as, for example, a network device, a network controller, a network card, or a communication module. The communication device 1004 may be configured to include a high-frequency switch, a duplexer, a filter, a frequency synthesizer, etc. to realize at least one of frequency division duplex (FDD) and time division duplex (TDD). For example, the above-mentioned transmission / reception unit 120 (220), transmission / reception antenna 130 (230), etc. may be realized by the communication device 1004. The transmission / reception unit 120 (220) may be implemented as a transmission unit 120a (220a) and a reception unit 120b (220b) that are physically or logically separated.

[0238] The input device 1005 is an input device (for example, a keyboard, a mouse, a microphone, a switch, a button, a sensor, etc.) that receives input from the outside. The output device 1006 is an output device (for example, a display, a speaker, a light emitting diode (LED) lamp, etc.) that outputs to the outside. The input device 1005 and the output device 1006 may be integrated into one device (for example, a touch panel).

[0239] Furthermore, each device, such as the processor 1001 and the memory 1002, is connected by a bus 1007 for communicating information. The bus 1007 may be configured using a single bus, or may be configured using different buses between each device.

[0240] Furthermore, the base station 10 and the user terminal 20 may be configured to include hardware such as a microprocessor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a programmable logic device (PLD), or a field programmable gate array (FPGA), and some or all of the functional blocks may be realized using such hardware. For example, the processor 1001 may be implemented using at least one of these pieces of hardware.

[0241] (Variation) Note that terms explained in the present disclosure and terms necessary for understanding the present disclosure may be replaced with terms having the same or similar meanings. For example, a channel, a symbol, and a signal (signal or signaling) may be interchangeable. A signal may also be a message. A reference signal may be abbreviated as RS, and may also be called a pilot, pilot signal, etc. depending on the applicable standard. A component carrier (CC) may also be called a cell, frequency carrier, carrier frequency, etc.

[0242] A radio frame may be composed of one or more periods (frames) in the time domain. Each of the one or more periods (frames) constituting a radio frame may be called a subframe. Furthermore, a subframe may be composed of one or more slots in the time domain. A subframe may have a fixed time length (e.g., 1 ms) that is independent of numerology.

[0243] Here, the numerology may be a communication parameter applied to at least one of transmission and reception of a signal or channel, and may indicate at least one of, for example, a subcarrier spacing (SCS), a bandwidth, a symbol length, a cyclic prefix length, a transmission time interval (TTI), the number of symbols per TTI, a radio frame structure, a specific filtering process performed by a transceiver in the frequency domain, and a specific windowing process performed by a transceiver in the time domain.

[0244] A slot may be composed of one or more symbols in the time domain (such as an Orthogonal Frequency Division Multiplexing (OFDM) symbol or a Single Carrier Frequency Division Multiple Access (SC-FDMA) symbol), and may be a time unit based on numerology.

[0245] A slot may include multiple minislots. Each minislot may consist of one or multiple symbols in the time domain. A minislot may also be called a subslot. A minislot may consist of fewer symbols than a slot. A PDSCH (or PUSCH) transmitted in a time unit larger than a minislot may be called PDSCH (PUSCH) mapping type A. A PDSCH (or PUSCH) transmitted using a minislot may be called PDSCH (PUSCH) mapping type B.

[0246] A radio frame, a subframe, a slot, a minislot, and a symbol all represent time units for transmitting signals. The radio frame, the subframe, the slot, the minislot, and the symbol may be referred to by other names corresponding to the radio frame, the subframe, the slot, the minislot, and the symbol. Note that the time units such as a frame, a subframe, a slot, a minislot, and a symbol in the present disclosure may be interchangeable.

[0247] For example, one subframe may be referred to as a TTI, or multiple consecutive subframes may be referred to as a TTI, or one slot or one minislot may be referred to as a TTI. That is, at least one of a subframe and a TTI may be a subframe (1 ms) in existing LTE, a period shorter than 1 ms (for example, 1-13 symbols), or a period longer than 1 ms. Note that the unit representing the TTI may be called a slot, minislot, etc., instead of a subframe.

[0248] Here, TTI refers to, for example, the smallest time unit for scheduling in wireless communication. For example, in an LTE system, a base station performs scheduling to allocate radio resources (such as frequency bandwidth and transmission power that can be used by each user terminal) to each user terminal in TTI units. However, the definition of TTI is not limited to this.

[0249] The TTI may be a transmission time unit for a channel-encoded data packet (transport block), a code block, a code word, etc., or may be a processing unit for scheduling, link adaptation, etc. When a TTI is given, the time interval (e.g., the number of symbols) to which a transport block, a code block, a code word, etc. is actually mapped may be shorter than the TTI.

[0250] When one slot or one minislot is called a TTI, one or more TTIs (i.e., one or more slots or one or more minislots) may be the minimum time unit for scheduling. Also, the number of slots (minislots) constituting the minimum time unit for scheduling may be controlled.

[0251] A TTI having a time length of 1 ms may be called a regular TTI (TTI in 3GPP Rel. 8-12), normal TTI, long TTI, regular subframe, normal subframe, long subframe, slot, etc. A TTI shorter than a regular TTI may be called a shortened TTI, short TTI, partial or fractional TTI, shortened subframe, short subframe, minislot, subslot, slot, etc.

[0252] In addition, a long TTI (e.g., a normal TTI, a subframe, etc.) may be interpreted as a TTI having a time length of more than 1 ms, and a short TTI (e.g., a shortened TTI, etc.) may be interpreted as a TTI having a TTI length shorter than the TTI length of a long TTI and equal to or greater than 1 ms.

[0253] A resource block (RB) is a resource allocation unit in the time domain and the frequency domain, and may include one or more consecutive subcarriers in the frequency domain. The number of subcarriers included in an RB may be the same regardless of numerology, for example, 12. The number of subcarriers included in an RB may also be determined based on numerology.

[0254] In addition, an RB may include one or more symbols in the time domain and may have a length of one slot, one minislot, one subframe, or one TTI. One TTI, one subframe, etc. may each be composed of one or more resource blocks.

[0255] Note that one or more RBs may also be called a physical resource block (PRB), a sub-carrier group (SCG), a resource element group (REG), a PRB pair, an RB pair, etc.

[0256] Furthermore, a resource block may be composed of one or more resource elements (REs). For example, one RE may be a radio resource region of one subcarrier and one symbol.

[0257] A Bandwidth Part (BWP), which may also be referred to as a fractional bandwidth, may represent a subset of contiguous common resource blocks (RBs) for a given numerology on a given carrier, where the common RBs may be identified by their index relative to a common reference point of the carrier. PRBs may be defined in a given BWP and numbered within that BWP.

[0258] The BWP may include an UL BWP (a BWP for UL) and a DL BWP (a BWP for DL). One or more BWPs may be configured for a UE within one carrier.

[0259] At least one of the configured BWPs may be active, and the UE may not expect to transmit or receive a given signal / channel outside the active BWP. Note that the terms "cell," "carrier," etc. in this disclosure may be read as "BWP."

[0260] The above-described structures of radio frames, subframes, slots, minislots, symbols, etc. are merely examples. For example, the number of subframes included in a radio frame, the number of slots per subframe or radio frame, the number of minislots included in a slot, the number of symbols and RBs included in a slot or minislot, the number of subcarriers included in an RB, the number of symbols in a TTI, the symbol length, the cyclic prefix (CP) length, etc. may be changed in various ways.

[0261] Furthermore, the information, parameters, etc. described in the present disclosure may be expressed using absolute values, may be expressed using relative values ​​from a predetermined value, or may be expressed using other corresponding information. For example, a radio resource may be indicated by a predetermined index.

[0262] The names used for parameters and the like in this disclosure are not intended to be limiting in any way. Furthermore, the mathematical expressions and the like using these parameters may differ from those explicitly disclosed in this disclosure. The various channels (PUCCH, PDCCH, etc.) and information elements may be identified by any suitable names, and therefore the various names assigned to these various channels and information elements are not intended to be limiting in any way.

[0263] The information, signals, etc. described in this disclosure may be represented using any of a variety of different technologies. For example, data, instructions, commands, information, signals, bits, symbols, chips, etc. that may be referred to throughout the above description may be represented by voltages, currents, electromagnetic waves, magnetic fields or magnetic particles, optical fields or photons, or any combination thereof.

[0264] Furthermore, information, signals, etc. may be output from a higher layer to a lower layer and / or from a lower layer to a higher layer. Information, signals, etc. may be input / output via multiple network nodes.

[0265] Input and output information, signals, etc. may be stored in a specific location (for example, memory) or may be managed using a management table. Input and output information, signals, etc. may be overwritten, updated, or added. Output information, signals, etc. may be deleted. Input information, signals, etc. may be transmitted to another device.

[0266] Notification of information is not limited to the aspects / embodiments described in the present disclosure, and may be performed using other methods. For example, notification of information in the present disclosure may be performed by physical layer signaling (e.g., Downlink Control Information (DCI) and Uplink Control Information (UCI)), higher layer signaling (e.g., Radio Resource Control (RRC) signaling, broadcast information (Master Information Block (MIB) and System Information Block (SIB)), Medium Access Control (MAC) signaling), other signals, or a combination thereof.

[0267] Note that the physical layer signaling may be called Layer 1 / Layer 2 (L1 / L2) control information (L1 / L2 control signal), L1 control information (L1 control signal), etc. Furthermore, the RRC signaling may be called an RRC message, such as an RRC connection setup message or an RRC connection reconfiguration message. Furthermore, the MAC signaling may be notified using, for example, a MAC Control Element (CE).

[0268] Furthermore, notification of specified information (e.g., notification that "it is X") is not limited to explicit notification, but may be made implicitly (e.g., by not notifying the specified information or by notifying other information).

[0269] The determination may be made by a value represented by one bit (0 or 1), by a Boolean value represented by true or false, or by a comparison of numerical values ​​(e.g., comparison with a predetermined value).

[0270] Software shall be construed broadly to mean instructions, instruction sets, code, code segments, program code, programs, subprograms, software modules, applications, software applications, software packages, routines, subroutines, objects, executable files, threads of execution, procedures, functions, etc., whether referred to as software, firmware, middleware, microcode, hardware description language, or otherwise.

[0271] Software, instructions, information, etc. may also be transmitted or received over a transmission medium. For example, if software is transmitted from a website, server, or other remote source using wired technologies (such as coaxial cable, fiber optic cable, twisted pair, Digital Subscriber Line (DSL)), and / or wireless technologies (such as infrared, microwave), then these wired and / or wireless technologies are included within the definition of transmission media.

[0272] As used in this disclosure, the terms "system" and "network" may be used interchangeably. A "network" may refer to devices included in the network (e.g., base stations).

[0273] In the present disclosure, terms such as "precoding," "precoder," "weight (precoding weight)," "Quasi-Co-Location (QCL)," "Transmission Configuration Indication state (TCI state)," "spatial relation," "spatial domain filter," "transmit power," "phase rotation," "antenna port," "antenna port group," "layer," "number of layers," "rank," "resource," "resource set," "resource group," "beam," "beam width," "beam angle," "antenna," "antenna element," "panel," etc. may be used interchangeably.

[0274] In this disclosure, terms such as "base station (BS)," "radio base station," "fixed station," "NodeB," "eNB (eNodeB)," "gNB (gNodeB)," "access point," "transmission point (TP)," "reception point (RP)," "transmission / reception point (TRP)," "panel," "cell," "sector," "cell group," "carrier," "component carrier," etc. may be used interchangeably. Base stations may also be referred to by terms such as macrocell, small cell, femtocell, picocell, etc.

[0275] A base station can accommodate one or more (e.g., three) cells. When a base station accommodates multiple cells, the overall coverage area of ​​the base station can be divided into multiple smaller areas, and each smaller area can be provided with communication service by a base station subsystem (e.g., a small indoor base station (Remote Radio Head (RRH))). The term "cell" or "sector" refers to a part or the entire coverage area of ​​a base station and / or base station subsystem that provides communication service within this coverage.

[0276] In this disclosure, the terms "Mobile Station (MS)," "user terminal," "User Equipment (UE)," "terminal," etc. may be used interchangeably.

[0277] A mobile station may also be referred to as a subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device, wireless device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, wireless terminal, remote terminal, handset, user agent, mobile client, client, or some other suitable terminology.

[0278] At least one of the base station and the mobile station may be called a transmitting device, a receiving device, a wireless communication device, etc. At least one of the base station and the mobile station may be a device mounted on a mobile object, or the mobile object itself. The mobile object may be a vehicle (e.g., a car, an airplane, etc.), an unmanned mobile object (e.g., a drone, an autonomous vehicle, etc.), or a robot (manned or unmanned). At least one of the base station and the mobile station may also include devices that do not necessarily move during communication operations. For example, at least one of the base station and the mobile station may be an Internet of Things (IoT) device such as a sensor.

[0279] Furthermore, a base station in the present disclosure may be read as a user terminal. For example, the aspects / embodiments of the present disclosure may be applied to a configuration in which communication between a base station and a user terminal is replaced with communication between multiple user terminals (which may be called, for example, Device-to-Device (D2D) or Vehicle-to-Everything (V2X)). In this case, the user terminal 20 may be configured to have the functions of the base station 10 described above. Furthermore, terms such as "uplink" and "downlink" may be read as terms corresponding to terminal-to-terminal communication (for example, "sidelink"). For example, terms such as uplink channel and downlink channel may be read as sidelink channel.

[0280] Similarly, the user terminal in the present disclosure may be read as a base station, in which case the base station 10 may be configured to have the functions of the user terminal 20 described above.

[0281] In the present disclosure, an operation described as being performed by a base station may be performed by its upper node in some cases. It is apparent that in a network including one or more network nodes having a base station, various operations performed for communication with a terminal may be performed by the base station, one or more network nodes other than the base station (such as, but not limited to, a Mobility Management Entity (MME) and a Serving-Gateway (S-GW)), or a combination thereof.

[0282] Each aspect / embodiment described in this disclosure may be used alone, in combination, or switched depending on the implementation. Furthermore, the order of the processing procedures, sequences, flowcharts, etc. of each aspect / embodiment described in this disclosure may be changed unless inconsistent. For example, the methods described in this disclosure present elements of various steps using an example order, and are not limited to the specific order presented.

[0283] Each aspect / embodiment described in the present disclosure may be related to Long Term Evolution (LTE), LTE-Advanced (LTE-A), LTE-Beyond (LTE-B), SUPER 3G, IMT-Advanced, 4th generation mobile communication system (4G), 5th generation mobile communication system (5G), 6th generation mobile communication system (6G), xth generation mobile communication system (xG) (xG (x is, for example, an integer or a decimal)), Future Radio Access (FRA), New-Radio Access Technology (RAT), New Radio (NR), New radio access (NX), Future generation radio access (FX), Global System for Mobile communications (GSM (registered trademark)), CDMA2000, Ultra Mobile Broadband (UMB), IEEE 802.11 (Wi-Fi (registered trademark)), IEEE 802.16 (WiMAX (registered trademark)), IEEE The present invention may be applied to systems that use 802.20, Ultra-Wide Band (UWB), Bluetooth (registered trademark), or other appropriate wireless communication methods, or to next-generation systems that are based on and extend these systems. Furthermore, the present invention may be applied to a combination of multiple systems (for example, a combination of LTE or LTE-A and 5G).

[0284] As used in this disclosure, the phrase "based on" does not mean "based only on," unless expressly stated otherwise. In other words, the phrase "based on" means both "based only on" and "based at least on."

[0285] As used in this disclosure, any reference to an element using a designation such as "first," "second," etc. does not generally limit the quantity or order of those elements. These designations may be used in this disclosure as a convenient method of distinguishing between two or more elements. Thus, a reference to a first and a second element does not imply that only two elements may be employed or that the first element must in some way precede the second element.

[0286] The term "determining," as used in this disclosure, may encompass a wide variety of actions. For example, "determining" may be considered to be judging, calculating, computing, processing, deriving, investigating, looking up, search, inquiry (e.g., looking up in a table, database, or another data structure), ascertaining, etc.

[0287] Additionally, "determining" may be considered to be "determining" receiving (e.g., receiving information), transmitting (e.g., sending information), input, output, accessing (e.g., accessing data in memory), etc.

[0288] Also, "decision" may be considered to be "deciding" resolving, selecting, choosing, establishing, comparing, etc. In other words, "decision" may be considered to be "deciding" on some action.

[0289] Furthermore, "judgment (decision)" may be interpreted as "assuming," "expecting," "considering," or the like.

[0290] The "maximum transmit power" in this disclosure may mean the maximum value of transmit power, the nominal UE maximum transmit power, or the rated UE maximum transmit power.

[0291] As used in this disclosure, the terms "connected," "coupled," or any variation thereof, refer to any direct or indirect connection or coupling between two or more elements, and may include the presence of one or more intermediate elements between two elements that are "connected" or "coupled" to each other. The coupling or connection between elements may be physical, logical, or a combination thereof. For example, "connected" may be read as "access."

[0292] In this disclosure, when two elements are connected, they may be considered to be "connected" or "coupled" to one another using one or more wires, cables, printed electrical connections, etc., as well as using electromagnetic energy having wavelengths in the radio frequency range, microwave range, light (both visible and invisible) range, etc., as some non-limiting and non-exhaustive examples.

[0293] In the present disclosure, the term "A and B are different" may mean "A and B are different from each other." The term may also mean "A and B are each different from C." Terms such as "separate" and "coupled" may also be interpreted in the same way as "different."

[0294] When used in this disclosure, the terms "include," "including," and variations thereof are intended to be inclusive, similar to the term "comprising." Furthermore, when used in this disclosure, the term "or" is not intended to be an exclusive or.

[0295] In this disclosure, where articles are added by translation, such as a, an, and the in English, the disclosure may include that the nouns following these articles are in the plural form.

[0296] Although the invention according to the present disclosure has been described in detail above, it is clear to those skilled in the art that the invention according to the present disclosure is not limited to the embodiments described in the present disclosure. The invention according to the present disclosure can be implemented in modified and altered forms without departing from the spirit and scope of the invention as defined by the description of the claims. Therefore, the description of the present disclosure is intended to be illustrative and explanatory and does not impose any limiting meaning on the invention according to the present disclosure.

Claims

1. a receiver that receives any one of a plurality of downlink signals, a first uplink signal from another terminal, and a sidelink signal from the other terminal; a control unit that reports a measurement result of the first uplink signal and controls transmission of an uplink channel using the other terminal using resources based on the report, The receiver receives information regarding resources of the first uplink signal and a second uplink signal transmitted from the terminal itself, and receives the first uplink signal based on the information.

2. the plurality of downlink signals are respectively associated with a plurality of beams; the receiving unit receives a configuration related to measurement of the plurality of downlink signals, and receives the plurality of downlink signals based on the configuration; The terminal according to claim 1 , wherein the control unit reports a plurality of measurement results corresponding to the plurality of downlink signals, respectively.

3. the receiving unit receives the sidelink signal; The terminal according to claim 1 , wherein the controller reports a measurement result corresponding to the sidelink signal.

4. receiving any one of a plurality of downlink signals, a first uplink signal from another terminal, and a sidelink signal from the other terminal; reporting a measurement result of the first uplink signal, and controlling transmission of an uplink channel by the other terminal using resources based on the report; A wireless communication method for a terminal, in which the receiving step receives information regarding resources of the first uplink signal and a second uplink signal transmitted from the terminal, and receives the first uplink signal based on the information.

5. A system comprising a terminal and a base station, The terminal a receiver that receives any one of a plurality of downlink signals, a first uplink signal from another terminal, and a sidelink signal from the other terminal; a control unit that reports a measurement result of the first uplink signal and controls transmission of an uplink channel using the other terminal using resources based on the report, the receiving unit receives information regarding resources of the first uplink signal and a second uplink signal transmitted from the terminal, and receives the first uplink signal based on the information; The base station comprises a transmitter that transmits the plurality of downlink signals and transmits information regarding resources of the first uplink signal and the second uplink signal.

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