Terminal, wireless communication method and system

Abstract

To improve the number of concurrent users. [Solution] The terminal of the present invention includes a receiving unit that receives any of the following signals: a plurality of downlink signals, a first uplink signal from another terminal, and a sidelink signal from the other terminal; and a control unit that reports the measurement result of the first uplink signal and controls the transmission of the uplink channel using the other terminal using the resources based on the report.

Description

Technical Field

[0001] This disclosure relates to a terminal, a wireless communication method, and a system in a next-generation mobile communication system.

Background Art

[0002] In a Universal Mobile Telecommunications System (UMTS) network, Long Term Evolution (LTE) was specified for the purpose of further high data rates, low latency, etc. (Non-Patent Document 1). Also, for the purpose of further large capacity and sophistication of LTE (Third Generation Partnership Project (3GPP) Release (Rel.) 8, 9), LTE-Advanced (3GPP Rel. 10-14) was specified.

[0003] A successor system to LTE (for example, also referred to as 5th generation mobile communication system (5G), 5G+ (plus), 6th generation mobile communication system (6G), New Radio (NR), 3GPP Rel. 15 and later, etc.) is also under consideration.

[0004] In an existing LTE system (for example, 3GPP Rel. 8-14), a user equipment (UE) transmits uplink control information (UCI) using at least one of a UL data channel (for example, Physical Uplink Shared Channel (PUSCH)) and a UL control channel (for example, Physical Uplink Control Channel (PUCCH)).

Prior Art Documents

Non-Patent Documents

[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 [Overview of the Initiative] [Problems that the invention aims to solve]

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

[0007] However, it is unclear how MU-MIMO should be used to improve user concurrency. If the method for using MU-MIMO is unclear, it may hinder improvements in user concurrency.

[0008] Therefore, one of the objectives of this disclosure is to provide a terminal, wireless communication method, and system that improves the number of users. [Means for solving the problem]

[0009] A terminal according to one aspect of the present disclosure includes a receiving unit that receives any of the following signals: a plurality of downlink signals, a first uplink signal from another terminal, and a sidelink signal from the other terminal; and a control unit that reports the measurement result of the first uplink signal and uses the resources based on the report to control the transmission of the uplink channel using the other terminal. [Effects of the Invention]

[0010] According to one aspect of this disclosure, the number of concurrent users can be improved. [Brief explanation of the drawing]

[0011] [Figure 1] Figures 1A and 1B show an example of data sharing between multiple UEs. [Figure 2] Figures 2A and 2B show an example of grouping according to embodiment 1-1-1. [Figure 3] Figures 3A and 3B show an example of grouping according to embodiment 1-1-2. [Figure 4] Figures 4A and 4B show an example of grouping according to embodiment 1-1-3. [Figure 5] Figures 5A and 5B show an example of grouping according to embodiment 1-1-3. [Figure 6] Figures 6A and 6B show an example of a transmission resource allocation method according to embodiment 1-2-1. [Figure 7] Figure 7 shows an example of a transmission resource allocation method according to embodiment 1-2-2. [Figure 8] Figure 8 shows an example of a data sharing and resource allocation method according to Embodiment 2-1. [Figure 9] Figure 9 shows an example of MU-MIMO. [Figure 10] Figure 10 shows an example of a combination of multiple UEs for MU-MIMO. [Figure 11] Figure 11 shows an example of a schematic configuration of a wireless communication system according to one embodiment. [Figure 12] Figure 12 shows an example of the configuration of a base station according to one embodiment. [Figure 13] Figure 13 shows an example of the configuration of a user terminal according to one embodiment. [Figure 14] Figure 14 shows an example of the hardware configuration of a base station and a user terminal according to one embodiment. [Modes for carrying out 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 advancement of mobile broadband (e.g., enhanced Mobile Broadband (eMBB)), machine type communications that enable a large number of simultaneous connections (e.g., massive Machine Type Communications (mMTC), Internet of Things (IoT)), and ultra-reliable and low-latency communications (e.g., Ultra-Reliable and Low-Latency Communications (URLLC)) are assumed. For example, in URLLC, lower latency and higher reliability than eMBB are required.

[0013] The traffic type may be identified in the physical layer based on at least one of the following. · Priority · Logical channels having different priorities · Modulation and Coding Scheme (MCS) table (MCS index table) · Channel Quality Indication (CQI) table · DCI format · Scrambling (masking) of cyclic redundancy check (CRC) bits included (added) in the DCI (DCI format) using a system information - radio network temporary identifier (RNTI) · Radio Resource Control (RRC) parameters · Specific RNTI (e.g., RNTI for URLLC, MCS - C - RNTI, etc.) · Search space · Fields in DCI (e.g., newly added fields or reuse of existing fields, priority fields)

[0014] Specifically, the traffic type of the HARQ-ACK to 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 or not to use MCS index table 3). • The RNTI used for CRC scrambling of the DCI used for scheduling the PDSCH (for example, whether C-RNTI or MCS-C-RNTI is used for CRC scrambling).

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

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

[0017] Furthermore, the traffic type of 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 (for example, whether or not to use MCS index table 3). • The RNTI used for CRC scrambling of the DCI used for scheduling the PUSCH (for example, whether C-RNTI or MCS-C-RNTI is used for CRC scrambling).

[0018] Traffic types may be associated with communication requirements (such as latency and error rates), data types (such as voice and data), etc.

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

[0020] For example, the user (U) plane delay requirement for eMBB may include that the U-plane delay for the downlink is 4 ms and the U-plane delay for the uplink is 4 ms. On the other hand, the U-plane delay requirement for URLLC may include that the U-plane delay for the downlink is 0.5 ms and the U-plane delay for the uplink is 0.5 ms. Furthermore, the reliability requirement for URLLC may include that the error rate for 32 bytes is 10⁻⁵ at a U-plane delay of 1 ms.

[0021] Furthermore, enhanced Ultra Reliable and Low Latency Communications (eURLLC) is being considered to improve the reliability of traffic, primarily for unicast data. In the following, unless otherwise distinguished, URLLC and eURLLC will simply be referred to as URLLC.

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

[0023] The URLLC may have a higher priority than the eMBB. The URLLC may be set to "high" priority (1), while the eMBB may be set to "low" priority (0).

[0024] (Improved coverage) In the consideration of future wireless communication systems (e.g., Rel.17 NR), PUSCH is considered one of the coverage bottleneck channels. To extend coverage and improve PUSCH characteristics, mechanisms for extension in PUSCH repetition type A, support for TB processing across multi-slot PUSCH, and joint channel estimation are being investigated.

[0025] Specifically, technologies are being considered that improve performance by increasing the time resources available for transmitting data.

[0026] Due to factors such as the fixed total transmit power (maximum transmit power) of the UE, sufficient consideration has not been given to performance improvements in the frequency direction. For example, increasing frequency resources reduces the power density per unit frequency, making significant improvements to transmit characteristics difficult. If data transmission resources cannot be increased, it may hinder improvements in coverage.

[0027] Therefore, the inventors conceived of a method in which a UE uses another UE to transmit UL data when it transmits that data.

[0028] (Multiple users) When considering scenarios where many devices, such as IoT devices, are expected to connect to the network, there is a risk of limitations on the number of concurrent users in the time domain.

[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 multiple different transmit beams (base station antenna beams) to multiple different UEs.

[0030] If 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 reduced.

[0031] Therefore, the inventors conceived a method for performing user multiplexing in the spatial direction to improve coverage characteristics and enable multi-terminal connectivity.

[0032] The embodiments of this disclosure will be described in detail below with reference to the drawings. Each wireless communication method according to the embodiments may be applied individually or in combination.

[0033] In this disclosure, “A / B / C” and “at least one of A, B, and C” may be interpreted as mutually exclusive. In this disclosure, cell, serving cell, CC, carrier, frequency carrier, BWP, DL BWP, UL BWP, active DL BWP, active UL BWP, and band may be interpreted as mutually exclusive. In this disclosure, index, ID, indicator, and resource ID may be interpreted as mutually exclusive. In this disclosure, support, control, controllable, operate, and operable may be interpreted as mutually exclusive.

[0034] In this disclosure, configure, activate, update, indicate, enable, specify, and select may be interpreted as interchangeable.

[0035] In this disclosure, higher-layer signaling may be, for example, Radio Resource Control (RRC) signaling, Medium Access Control (MAC) signaling, broadcast information, or a combination thereof. In this disclosure, RRC, RRC signaling, RRC parameters, higher layer, higher-layer parameters, RRC information elements (IE), and RRC messages may be interpreted as one another.

[0036] MAC signaling may use, for example, MAC Control Elements (MAC CEs) or MAC Protocol Data Units (PDUs). Broadcast information may also include, for example, Master Information Blocks (MIBs), System Information Blocks (SIBs), Remaining Minimum System Information (RMSIs), or Other System Information (OSIs).

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

[0038] In this disclosure, 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 of QCL type D in TCI state / QCL assumption, RS of 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 interpreted as each other. In this disclosure, QCL type X-RS, DL-RS associated with QCL type X, DL-RS having QCL type X, DL-RS source, SSB, CSI-RS, and SRS may be interpreted as each other.

[0039] In this disclosure, panels, Uplink (UL) transmit entities, TRP, spatial relationships, control resource sets (CORESET), PDSCH, codewords, base stations, antenna ports for a signal (e.g., demodulation reference signal (DMRS) ports), groups of antenna ports for a signal (e.g., DMRS port groups), groups for multiplexing (e.g., code division multiplexing (CDM) groups, reference signal groups, CORESET groups), CORESET pools, CORESET subsets, CW, redundant versions (RV), and layers (MIMO layers, transmit layers, spatial layers) may be interpreted as one another.

[0040] (Wireless communication method) In the transmission of data (transport blocks (TB), traffic, UL data, PUSCH) from one UE (Terminal User) to a NW (Network, e.g., base station, gNB), multiple UEs may share the data and transmit it to the NW using multiple frequencies. Multiple UEs within a UE group may transmit the shared data.

[0041] In the example in Figure 1A, when UE#1 transmits data to the gNB, it may share that data with UE#2 / UE#3, and UE#1 / UE#2 / UE#3 may transmit the data. In this case, as in the example in Figure 1B, at least two of UE#1, UE#2, and UE#3 may use multiple different frequencies and transmit the data at the same time. This allows for an increase in overall transmit power without increasing the transmit power per UE, thereby improving the characteristics of UL data transmission. Each UE may also perform repeat transmission of data.

[0042] The following describes methods for sharing data among multiple UEs and the mechanism for coordinated transmission by multiple UEs (resource allocation method, method for requesting coordinated transmission).

[0043] In this disclosure, the terms UE attempting to transmit the target data to the base station, transmitting UE, transmitting terminal, and UE generating the traffic may be interpreted as interchangeable.

[0044] In this disclosure, the terms "UE that transmits data from the transmitting UE to the base station," "transmitting UE," "cooperative terminal," and "relay UE" may be interpreted interchangeably.

[0045] In this disclosure, 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 one another.

[0046] In this disclosure, UEs within a UE group, terminals within a terminal group, each of multiple UEs sharing data, each of multiple UEs transmitting the same data, and shared UEs may be interpreted as equivalent to one another.

[0047] In this disclosure, wireless quality, quality of a particular channel / RS, wireless link quality, and range of received power may be interpreted as mutually exclusive.

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

[0049] In this disclosure, UE, terminal, IAB node, mobile station, mobile body, and vehicle may be interpreted as interchangeable.

[0050] In this disclosure, "transmitting channels / signals to multiple UEs," "broadcast," "multicast," and "groupcast" may be interpreted interchangeably.

[0051] In this 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 interchangeably.

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

[0053] The base station / transmitting UE may allocate data transmission / reception resources to the transmitting UE and coordinating UEs (or schedule data transmission / reception) based on information that identifies the UEs within the UE group (e.g., destination ID / source ID).

[0054] A base station / transmitting UE may schedule data transmission / reception for some UEs within a UE group. Some UEs within a UE group may be UEs that meet or exceed a certain quality threshold (measurement results / error rate).

[0055] In this 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 as each other.

[0056] In this disclosure, the adjacent beam of a particular beam, the nearby beam of a particular beam, the peripheral beam of a particular beam, other beams of a particular beam, and beams associated with a particular beam may be interpreted as mutually exclusive.

[0057] The association of one or more adjacent beams with each base station antenna beam may be established by upper-layer signaling or specified in the specifications.

[0058] A base station may receive measurement results for multiple beams from each of multiple UEs. Based on these measurement results, the base station may determine combinations of multiple UEs to which MU-MIMO is applied to a single base station transmit beam, and channels (DL channels / UL channels) for multiple UEs may be transmitted using the same time and frequency resources 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. The base station may allocate the same time and frequency resources to the channels of the UEs within the combination, and different time and frequency resources to the channels of the UEs outside the combination.

[0060] By using spatial multiplexing (MU-MIMO) for combinations of multiple geographically separated UEs, the spatial correlation of signals from multiple UEs can be reduced, improving signal separation performance. This allows for an increase in the number of user-multiplexed connections.

[0061] Multiple DMRSs may be assigned to multiple UEs within a combination, each being orthogonal to the others. These multiple DMRSs may be from different series within the same CDM group, or they may have different orthogonal cover codes (OCCs) applied to them.

[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 the DL channel) to that UE. The UE may receive the DL channel using the reported best beam.

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

[0064] MU-MIMO in this disclosure may be applied to DL channels or UL channels.

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

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

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

[0068] 《Aspect 1-1》 How to set up (group) collaborative UEs

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

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

[0071] When sidelinks are used for data sharing, the sending UE may use a configured ID as the destination to indicate the coordinating UE. The destination may also be an L2 destination.

[0072] When sidelinks are used for data sharing, the transmitting UE may use the ID of the coordinating UE as the L2 destination. If the ID is common to multiple UEs, the transmitting UE may send the data to one or more coordinating UEs via broadcast (multicast). If the ID is unique to a UE, the transmitting UE may send the data to a single coordinating UE via unicast.

[0073] When a transmitting UE transmits target data to a co-conducting UE, sidelink modes 1 and 2 may be used. In sidelink mode 1, the transmission resource for the target data may be set / instructed by a gNB using SL-RNTI. In sidelink mode 2, the transmission resource for the target data may be discovered / determined by the transmitting UE. When sidelink mode 1 is used, the transmitting UE may request resource allocation for grouping from the base station (by sending an SR). The base station may notify / instruct the transmitting UE and any UEs that may become co-conducting UEs of resource allocation for grouping. Any UEs that may become co-conducting UEs may be UEs that correspond to the same cell / TRP / beam / received power values ​​(range) as the transmitting UE. The base station may notify / instruct resource allocation using SL-RNTI and notify grouping information using the allocated resources. The grouping information may include ID / destination. The base station may notify / instruct resource allocation in response to an SR from a UE.

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

[0075] The transmitting UE may report to the base station the ID of the cooperating UE that successfully received the target data.

[0076] The ID may be associated with an identifier set by the network (for example, C-RNTI).

[0077] In the example in Figure 2A, UE#0 is the transmitting UE, and UE#1 and #2 are coordinating 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. Subsequently, as shown in the example in Figure 2B, UE#0 transmits the target data to UE#1 and #2 using its destination ID. Each of UE#1 and #2 may send HARQ-ACK information to UE#0 along with its own source ID upon receiving the target data. When UE#0 receives ACKs from each of UE#1 and #2, UE#0 may recognize that UE#1 and #2 are sharing the target data. UE#0 may report information to the base station indicating that UE#1 and #2 are sharing the target data.

[0078] [Aspect 1-1-2] The sending UE may perform grouping (it may explore / determine destinations).

[0079] A transmitting UE may transmit target data or a specific signal / channel for the purpose of searching for a cooperating UE. For example, a transmitting UE may transmit 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 UEs, or a pre-configured / defined value. Multiple or all UEs may be able to receive target data addressed to this destination ID, or may attempt to receive such target data.

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

[0081] The transmitting UE may report to the base station the ID of the cooperating UE that successfully received the target data.

[0082] In the example in Figure 3A, UE#0 is the transmitting UE, and UE#1 and #2 are coordinating UEs. Source IDs 00, 01, and 10 are set / instructed for UE#0, #1, and #2, respectively. Then, as shown in the example in Figure 3B, UE#0 transmits the target data to UE#1 and #2 using destination ID 99. All UEs attempt to receive the target data addressed to destination ID 99. Upon receiving the target data, each of UE#1 and #2 sends HARQ-ACK information to UE#0 along with its own source ID. When UE#0 receives ACKs from both UE#1 and #2, UE#0 recognizes that UE#1 and #2 are sharing the target data. UE#0 may also report information to the base station indicating that UE#1 and #2 are sharing the target data.

[0083] [Aspect 1-1-3] UEs other than the sending UE may perform grouping (they may explore / determine the destination).

[0084] Cooperative UEs may transmit specific signals for the purpose of UE discovery / grouping. Sidelinks may be used for transmitting specific signals. The destination ID used in the specific signal may be a value set / instructed by the base station, as in Embodiment 1-1-1, or a specific value, as in Embodiment 1-1-2.

[0085] The transmitting UE may receive at least one of the following in response to the reception of a specific signal: information indicating whether the reception was successful (HARQ-ACK information) and the transmitting UE's ID (e.g., L2 source ID).

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

[0087] In the example in Figure 4A, UE#0 is the transmitting UE, and UE#1 and #2 are coordinating 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. Then, in the example in Figure 4B, if UE#0 and #1 are already in a UE group, UE#2 uses its destination ID to send a specific signal to UE#0 and #1. Upon receiving the specific signal, UE#0 sends HARQ-ACK information to UE#2 along with its own source ID, adding UE#2 to the UE group. UE#0 may also use the destination ID to send target data to UE#1 and #2 within the UE group. Upon receiving the target data, UE#1 and #2 each send HARQ-ACK information to UE#0 along with their own source ID. When UE#0 receives ACKs from both UE#1 and #2, UE#0 recognizes that UE#1 and #2 share the target data. UE#0 may report to the base station information indicating that UE#1 and #2 share the target data, or it may report to the base station information indicating that UE#2 (source ID=10) has been added to the UE group.

[0088] [Aspect 1-1-4] Grouping may be pre-defined or defined by specifications.

[0089] Each UE may have a pre-configured destination ID (for broadcast / unicast) or may be specified in the specifications.

[0090] Each UE may have its own destination ID and the destination ID of another UE set.

[0091] The sending UE may also send the target data to the co-UE using the destination ID.

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

[0093] The transmitting UE may report to the base station the ID of the cooperating UE that successfully received the target data.

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

[0095] 《Aspect 1-2》 Method for allocating transmission resources to a co-administered UE

[0096] [Aspect 1-2-1] The base station may directly configure / instruct all UEs (transmitting UEs and coordinating UEs) to have a transmission resource (UL transmission resource) for transmitting target data from the UE to the base station. The base station may also assign the respective transmission resources to the transmitting UE and coordinating UE. If the base station is aware of the existence / ID of the coordinating UE (for example, by aspect 1-1), the base station may assign the respective transmission resources to the transmitting UE and coordinating UE.

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

[0098] A base station may schedule transmit resources for multiple UEs using a single control information (e.g., DCI). In the example in Figure 6B, the UE group includes transmit UE #1 and coordinating UEs #2 and #3. Each of UEs #1, #2, and #3 receives DCI #0. DCI #0 schedules PUSCH #1, #2, and #3. UEs #1, #2, and #3 each receive PUSCH #1, #2, and #3.

[0099] A base station may schedule some of the UEs in a group based on the radio quality corresponding to each UE. For example, a base station may not schedule the transmitting UEs but may schedule the coordinating UEs.

[0100] [Aspect 1-2-2] A base station may configure / instruct only the transmitting UEs within a UE group to configure / assign transmission resources (UL transmission resources) (allocation) for the target data from the UE to the base station. A transmitting UE may configure / instruct the coordinating UE to configure / assign transmission resources (allocation) for the target data. A base station may configure / instruct the transmitting UE to configure / assign information regarding the transmitting UE's transmission resources and information regarding the coordinating UE's transmission resources. A transmitting UE may configure / instruct the coordinating UE to configure / assign information regarding the coordinating UE's transmission resources. Information regarding transmission resources (allocation) may include at least one of frequency domain resource allocation and time domain resource allocation. A transmitting UE may configure / instruct / transmit / notify the coordinating UE directly (e.g., using a sidelink) about the coordinating UE's transmission resources.

[0101] A base station may schedule transmission resources for multiple UEs using a single control information (e.g., DCI). In the example in Figure 7, the UE group includes transmitting UE #1 and coordinating UEs #2 and #3. UE1 receives DCI#0, which contains resource allocation (scheduling) information for PUSCH#1, #2, and #3. UE#1 transmits the resource allocation information for PUSCH#2 to UE#2 using a sidelink. UE#1 transmits the resource allocation information for PUSCH#3 to UE#3 using a sidelink. UE#1, #2, and #3 each receive PUSCH#1, #2, and #3, respectively.

[0102] 《Aspects 1-3》 How to request a Cooperative UE

[0103] The transmitting UE may transmit a channel / signal to the base station that includes an SR and a request for co-transmission. The base station may explicitly or implicitly determine whether co-transmission is possible based on the UE capability from the transmitting UE.

[0104] The transmitting UE may spontaneously share the target data with the co-operating UE (for example, using sidelink mode 2) before transmitting the SR (or spontaneously transmit the target data to the co-operating UE). The transmitting UE may share the target data with the co-operating UE after transmitting the SR. The transmitting UE may spontaneously share the target data with the co-operating UE after transmitting the SR (for example, using sidelink mode 2). The base station may trigger the sharing of the target data to the transmitting UE / co-operating UE (for example, using sidelink mode 1) in response to the reception of the SR.

[0105] The transmitting UE may transmit an SR, or both the transmitting UE and the coordinating UE may transmit an SR. Both the transmitting UE and the coordinating UE may transmit an SR simultaneously. Among the UE group, the UE corresponding to a radio quality above the threshold may transmit an SR, or the UE corresponding to the highest (best) radio quality may transmit an SR.

[0106] According to this embodiment, since the target data of the transmitting UE is shared with the co-transmitting UE without going through the base station, the likelihood of the target data being shared with the co-transmitting UE increases even when the wireless quality between the transmitting UE and the base station is low (long distance).

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

[0108] The UE uses NR Uu for data sharing. The paths using NR Uu may be uplink and downlink.

[0109] 《Aspect 2-1》 Methods for sharing data and allocating resources between multiple Unreal Engines (UEs).

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

[0111] Control information for each collaborative UE (e.g., DCI) may schedule monitoring / transmission resources for each collaborative UE individually. Alternatively, one piece of control information (e.g., DCI) may schedule monitoring / transmission resources for multiple UEs.

[0112] The base station may explicitly or implicitly notify the coordinating UE of monitoring / transmission resources. For example, the base station may notify the coordinating UE of two time resources, the first of which is for monitoring and the second of which is for transmission.

[0113] In the example in Figure 8, the UE group includes transmitting UE#1 and coordinating UEs#2 and #3. UEs#1, #2, and #3 receive DCI#1, #2, and #3 respectively. DCI#1 schedules a repetition of PUSCH#1. DCI#2 schedules monitoring / receiving the first repetition of PUSCH#1 and transmitting PUSCH#2. DCI#3 schedules monitoring / receiving the first repetition of PUSCH#1 and transmitting PUSCH#3. UE#1 transmits the target data using a repetition 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 sent using the same time resources 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 to the base station that includes an SR and a request for co-transmission. The base station may explicitly or implicitly determine whether co-transmission is possible 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 coordinating 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 the reporting of adjacent beams to a particular beam, depending on the information set for that particular beam to the UE. The DL signal may be a DL reference signal or SSB / CSI-RS.

[0118] In the example in Figure 9, the base station sets / instructs UE#1 to set / instruct base station antenna beam #1 (the TCI state corresponding to base station antenna beam #1). In this case, the base station may also set / instruct UE1 to report the measurement results of the 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 also be notified to the UE.

[0119] The base station may instruct one or more associated UEs to report adjacent beams. The associated UEs may be UEs that have set / instructed a specific beam. In the example in Figure 10, the associated UEs may be UEs #1 through #6 using antenna beam #1.

[0120] The UE may include measurement results for a specific beam / adjacent beam in the report, in accordance with the reporting settings / instructions. Even if thresholds are set by the measurement target information element (e.g., MeasObjectNR) and the reporting setting information element (e.g., ReportConfigNR), the UE may report the measurement results for a specific beam / adjacent beam regardless of whether the measurement results for that beam are above or below the threshold. The UE may report the measurement results for all beams for which measurement has been set.

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

[0122] By having the UE report measurement results regardless of the actual results, the base station can use multiple measurement results to estimate the relative positions of the UEs, determine the MU-MIMO combination, and perform other actions.

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

[0124] <Fourth Embodiment> A UE may measure UL signals from other UEs and report the measurement results to the base station. The UL signal may be an UL reference signal or an SRS.

[0125] Appearance 4-1 The base station may configure / instruct the UE to have access to UL signals from other UEs.

[0126] The base station may configure / instruct one of several UEs that are candidates for a MU-MIMO combination (the measurement UE, e.g., UE#1) to measure the UL signal from another UE among the several UEs (the UE being measured, e.g., UE#2).

[0127] The base station may transmit to the measurement UE (UE#1) UE-specific settings that are sent to the measurement UE (UE#2) for the purpose of transmitting the UL signal.

[0128] The measuring UE may perform measurements on a configured UL signal resource 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 of whether the measuring UE and the UE being measured are suitable for the MU-MIMO combination. The measuring UE may determine that the measuring UE and the UE being measured are suitable for the MU-MIMO combination if the measurement result is lower than a threshold. Information on multiple UEs being measured may be configured for the measuring UE. The measuring UE may measure UL signals from multiple UEs and report measurement results / determination results for multiple UEs.

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

[0130] 《Appearance 4-2》 The base station does not need to configure / instruct the UE to access UL signals from other UEs.

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

[0132] If the measurement result is above a threshold, the UE may report at least one of the resources corresponding to that measurement result and the corresponding status. The resources may be a system frame number (SFN), subframe number, or slot number. The reported content may be the measurement result (e.g., received power), or it may be a determination result of whether the measuring UE and the UE being measured are suitable for a MU-MIMO combination.

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

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

[0135] <Fifth Embodiment> Multiple UEs may be grouped together (forming a UE group). A UE may receive signals / channels / control information transmitted from other UEs and determine / identify UEs within the UE group based on the quality of that information. Signals / channels transmitted from other UEs may be at least one of the following: synchronization signals (e.g., sidelink(S)-SSB (S-SS / SPBCH block)), control channels (e.g., physical sidelink control channel (PSCCH)), reference signals (e.g., SRS), or HARQ-ACK information.

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

[0137] [Report method 1] When the UE reports grouping information to the base station, it also reports information about the separation distance to the base station.

[0138] [Report method 2] When the UE receives a request for reporting from the base station, it 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 / frequency set / instructed by the base station.

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

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

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

[0143] <Sixth Embodiment> Higher-layer parameters (RRC IE) / UE capabilities corresponding to the features in each of the above embodiments may be defined. The UE capabilities may indicate that the function is supported.

[0144] A UE that has the corresponding higher-layer parameter (the parameter that enables the function) set may perform that function. It may also be stipulated that "a UE for which the corresponding higher-layer parameter is not set shall not perform that function (for example, in accordance with Rel. 15 / 16)."

[0145] A UE that reports its UE capability to support a particular function may perform that function. It may also be stipulated that "a UE that does not report its UE capability to support a particular function shall not perform that function (e.g., in accordance with Rel. 15 / 16)."

[0146] If the UE reports its capability to support the function and the corresponding higher-layer parameters are set, the UE may perform the function. It may also be stipulated that "if the UE does not report its capability to support the function, or if the corresponding higher-layer parameters are not set, the UE shall not perform the function (e.g., according to Rel. 15 / 16)."

[0147] UE capability may indicate whether or not the UE supports that function.

[0148] The function may be a function related to coordinated transmission in data transmission. UE capability may indicate whether or not it supports coordinated transmission in data transmission. UE capability may indicate whether or not it supports grouping / destination setting by the base station. UE capability may indicate whether or not it supports grouping / destination setting by the base station.

[0149] The functionality may include measurement / reporting for determining combinations of multiple UEs in MU-MIMO. UE capability may indicate whether it supports measurement / reporting using DL signals (e.g., SSB / CSI-RS) / UL signals (e.g., SRS) for determining combinations of multiple UEs in MU-MIMO. UE capability may also indicate whether it supports grouping of multiple UEs and whether it supports measurement / reporting for determining combinations of multiple UEs in MU-MIMO.

[0150] The UE may report its capability regarding the function for the frequencies it supports. UE capability may indicate whether the UE supports the function for all frequencies. UE capability may indicate whether the function is supported on a frequency / band basis. UE capability may indicate whether the function is supported on a frequency range basis (e.g., FR1 / FR2).

[0151] The UE may report its capabilities regarding the functionality of the duplexing schemes it supports. UE capabilities may indicate whether or not the UE supports a function. UE capabilities may also indicate whether or not a function is supported for each duplexing scheme (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 one embodiment of this disclosure will be described below. In this wireless communication system, communication is performed using any or a combination thereof of the wireless communication methods according to the above embodiments of this disclosure.

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

[0155] Furthermore, the wireless communication system 1 may 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)), and so on.

[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 where both MN and SN are NR base stations (gNB) (NR-NR Dual Connectivity (NN-DC))).

[0158] The wireless communication system 1 may include a base station 11 that forms a macrocell C1 with relatively wide coverage, and base stations 12 (12a-12c) located within the macrocell C1 that form a small cell C2 that is narrower than the macrocell C1. User terminals 20 may be located within at least one cell. The arrangement and number of each cell and user terminal 20 are not limited to the configuration shown in the figure. Hereinafter, when base stations 11 and 12 are not distinguished, 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 the first frequency band (Frequency Range 1 (FR1)) and the second frequency band (Frequency Range 2 (FR2)). A macrocell C1 may be included in FR1, and a 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 fall in a frequency band higher than FR2.

[0161] Furthermore, the user terminal 20 may communicate using at least one of the following methods at each CC: Time Division Duplex (TDD) and Frequency Division Duplex (FDD).

[0162] Multiple base stations 10 may be connected by wire (e.g., optical fiber compliant with Common Public Radio Interface (CPRI), X2 interface, etc.) or wireless (e.g., NR communication). For example, if NR communication is used as a backhaul between base stations 11 and 12, base station 11, which is the upstream station, may be called an Integrated Access Backhaul (IAB) donor, and base station 12, which is the relay station, may be called an IAB node.

[0163] Base station 10 may be connected to the core network 30 via other base stations 10 or directly. The core network 30 may include at least one of the following: Evolved Packet Core (EPC), 5G Core Network (5GCN), Next Generation Core (NGC), etc.

[0164] The user terminal 20 may be a terminal that supports at least one of the following communication methods: LTE, LTE-A, 5G, etc.

[0165] In the wireless communication system 1, an orthogonal frequency division multiplexing (OFDM)-based wireless access scheme may be used. 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), etc., may be used in at least one of the downlink (DL) and uplink (UL).

[0166] The wireless access method may also be called a waveform. In wireless communication system 1, other wireless access methods (for example, other single-carrier transmission methods, other multi-carrier transmission methods) may be used for the UL and DL wireless access methods.

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

[0168] Furthermore, in the wireless communication system 1, the uplink channel may include a Physical Uplink Shared Channel (PUSCH), a Physical Uplink Control Channel (PUCCH), a Physical Random Access Channel (PRACH), or the like, all of which are shared by each user terminal 20.

[0169] User data, higher-layer control information, and System Information Blocks (SIBs) are transmitted via PDSCH. User data and higher-layer control information may also be transmitted via PUSCH. Furthermore, Master Information Blocks (MIBs) may be transmitted via PBCH.

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

[0171] Furthermore, the DCI that schedules PDSCH may be called a DL assignment or DL ​​DCI, and the DCI that schedules PUSCH may be called a UL grant or UL DCI. Furthermore, PDSCH may be interpreted as DL data, and PUSCH may be interpreted as UL data.

[0172] PDCCH detection may utilize a Control Resource Set (CORESET) and a search space. A CORESET corresponds to the resources used to search for DCIs. A search space corresponds to the search area and search method for PDCCH candidates. A single CORESET may be associated with one or more search spaces. The UE may monitor CORESETs associated with a particular search space based on the search space configuration.

[0173] A single search space may correspond to one or more PDCCH candidates corresponding to aggregation levels. One or more search spaces may be referred to as a search space set. In this disclosure, "search space," "search space set," "search space configuration," "search space set configuration," "CORESET," and "CORESET configuration" may be interpreted interchangeably.

[0174] PUCCH may transmit uplink control information (UCI) which includes at least one of the following: channel state information (CSI), delivery acknowledgment (e.g., Hybrid Automatic Repeat reQuest ACKnowledgement (HARQ-ACK), ACK / NACK, etc.), and scheduling request (SR). PRACH may transmit a random access preamble for establishing a connection with the cell.

[0175] In this disclosure, downlinks, uplinks, etc., may be expressed without the prefix "link." Also, the prefix "physical" may be omitted when describing various channels.

[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, as DL-RS, 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.

[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 SS (PSS, SSS) and PBCH (and DMRS for PBCH) may be called an SS / PBCH block, SS Block (SSB), etc. SS, SSB, etc., may also be called reference signals.

[0178] Furthermore, in the wireless communication system 1, the Uplink Reference Signal (UL-RS) may transmit the Sounding Reference Signal (SRS), Demodulation Reference Signal (DMRS), etc. The DMRS may also be called the User-Specific Reference Signal (UE-specific Reference Signal).

[0179] (base station) Figure 12 shows an example of the configuration of a base station according to one 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 one or more of the control unit 110, transceiver unit 120, transceiver antenna 130, and transmission line interface 140 may be provided.

[0180] In this example, the functional blocks of the characteristic parts of this 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 part described below may be omitted.

[0181] The control unit 110 controls the entire base station 10. The control unit 110 can be composed of a controller, control circuit, etc., as described based on common understanding in the art relating to this disclosure.

[0182] The control unit 110 may control signal generation, scheduling (e.g., resource allocation, mapping), etc. The control unit 110 may also control transmission and reception, measurement, etc., using the transceiver unit 120, the transceiver antenna 130, and the transmission path interface 140. 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 also perform call processing of communication channels (setting, releasing, etc.), status management of the base station 10, management of radio resources, etc.

[0183] The transmitting / receiving 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 transmitting / receiving unit 120 can be composed of a transmitter / receiver, RF circuit, baseband circuit, filter, phase shifter, measurement circuit, transmitting / receiving circuit, etc., as described based on common understanding in the art relating to this disclosure.

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

[0185] The transmitting and receiving antenna 130 can be composed of an antenna described based on common understanding in the art relating to this disclosure, such as an array antenna.

[0186] The transmitting / receiving unit 120 may transmit the downlink channel, synchronization signal, downlink reference signal, etc. The transmitting / receiving unit 120 may also receive the uplink channel, uplink reference signal, etc.

[0187] The transmitting / receiving unit 120 may form at least one of the transmitting beam and the receiving beam using digital beamforming (e.g., precoding), analog beamforming (e.g., phase rotation), or the like.

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

[0189] The transmitting / receiving unit 120 (transmission processing unit 1211) may perform transmission processing on the bit sequence to be transmitted, 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, and output a baseband signal.

[0190] The transmitting / receiving unit 120 (RF unit 122) may perform modulation, filtering, amplification, etc., of the baseband signal to the radio frequency band and transmit the signal in the radio frequency band via the transmitting / receiving antenna 130.

[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 130.

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

[0193] The transmitting / receiving unit 120 (measurement unit 123) may perform measurements related to 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 also measure received power (e.g., Reference Signal Received Power (RSRP)), reception 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 send and receive signals (backhaul signaling) with 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] In this disclosure, the transmitting and receiving units of the base station 10 may consist of at least one of a transmitting / receiving unit 120, a transmitting / receiving antenna 130, and a transmission path interface 140.

[0196] The transmitting / receiving unit 120 may receive signals (e.g., measurement results, determination results, destination ID, source ID) for determining which of the multiple terminals (e.g., UE groups) are sharing the uplink data.

[0197] The control unit 110 may, based on the signal, control (for example, set, instruct, or schedule) the first terminal among the plurality of terminals to either receive the uplink data from the second terminal among the plurality of terminals, or to transmit the uplink data to the second terminal.

[0198] The transmitting / receiving unit 120 may receive measurement results of any of the following signals: multiple downlink signals, a first uplink signal from another terminal, or a sidelink signal from another terminal.

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

[0200] (User terminal) Figure 13 shows an example of the configuration of a user terminal according to one embodiment. The user terminal 20 includes a control unit 210, a transmitting / receiving unit 220, and a transmitting / receiving antenna 230. Note that one or more of the control unit 210, the transmitting / receiving unit 220, and the transmitting / receiving antenna 230 may be provided.

[0201] In this example, the functional blocks of the characteristic parts of this embodiment are mainly shown, 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 part described below may be omitted.

[0202] The control unit 210 controls the entire user terminal 20. The control unit 210 can be composed of a controller, control circuit, etc., as described based on common understanding in the technical field related to this disclosure.

[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 transmitting / receiving unit 220 and the transmitting / receiving antenna 230. The control unit 210 may generate data to be transmitted as signals, control information, sequences, etc., and transfer them to the transmitting / receiving unit 220.

[0204] The transmitting / receiving 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 transmitting / receiving unit 220 can be composed of a transmitter / receiver, RF circuit, baseband circuit, filter, phase shifter, measurement circuit, transmitting / receiving circuit, etc., as described based on common understanding in the art relating to this disclosure.

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

[0206] The transmitting and receiving antenna 230 can be composed of an antenna described based on common understanding in the art relating to this disclosure, such as an array antenna.

[0207] The transmitting / receiving unit 220 may receive the downlink channel, synchronization signal, downlink reference signal, etc. The transmitting / receiving unit 220 may also transmit the uplink channel, uplink reference signal, etc.

[0208] The transmitting / receiving unit 220 may form at least one of the transmitting beam and the receiving beam using digital beamforming (e.g., precoding), analog beamforming (e.g., phase rotation), or the like.

[0209] The transmitting / receiving unit 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 and control information acquired from the control unit 210, etc., to generate a bit sequence to be transmitted.

[0210] The transmitting / receiving unit 220 (transmission processing unit 2211) may perform transmission processing on the bit sequence to be transmitted, 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, and output a baseband signal.

[0211] Whether or not to apply DFT processing may be based on the transform precoding settings. The transmitting / receiving unit 220 (transmission processing unit 2211) may perform DFT processing as part of the transmission process to transmit a channel (for example, PUSCH) using a DFT-s-OFDM waveform if transform precoding is enabled for that channel, or it may not perform DFT processing as part of the transmission process if transform precoding is not enabled for that channel.

[0212] The transmitting / receiving unit 220 (RF unit 222) may perform modulation, filtering, amplification, etc., of the baseband signal to the radio frequency band and transmit the signal in the radio frequency band 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 transmitting / receiving unit 220 (receiving processing unit 2212) may apply reception processing such as analog-to-digital conversion, FFT processing, IDFT processing (if necessary), filtering, demapping, demodulation, decoding (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 transmitting / receiving unit 220 (measuring unit 223) may perform measurements related to the received signal. For example, the measuring unit 223 may perform RRM measurement, CSI measurement, etc., based on the received signal. The measuring unit 223 may also 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] In this disclosure, the transmitting and receiving units of the user terminal 20 may consist of at least one of a transmitting / receiving unit 220 and a transmitting / receiving antenna 230.

[0217] The transmitting / receiving unit 220 may receive signals (e.g., UL signals, sidelink signals, measurement results, determination results, destination IDs, source IDs) for determining which of the multiple terminals share uplink data (e.g., transport blocks).

[0218] The control unit 210 may, based on the signal, control either receiving the uplink data from another terminal among the plurality of terminals or transmitting the uplink data to the other terminal (for example, setting, instructing, scheduling, data transmission, data reception, UL channel transmission / reception, sidelink channel transmission / reception).

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

[0220] The control unit 210 may also control the transmission of control information (for example, side link control information) to the other terminals instructing them to receive the uplink data and to transmit the uplink data.

[0221] The transmitting / receiving unit 220 may receive one of the multiple repetitions of the uplink data. The control unit 210 may control the transmission of the received repetition.

[0222] The transmitting / receiving unit 220 may receive any of the following signals: multiple downlink signals, a first uplink signal from another terminal, or a sidelink signal from another terminal.

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

[0224] The plurality of downlink signals may each be associated with a plurality of beams. The transmitting / receiving unit 220 may receive settings for measuring the plurality of downlink signals and receive the plurality of downlink signals based on the settings. The control unit 210 may report a plurality of measurement results corresponding to each of the plurality of downlink signals.

[0225] The transmitting / receiving unit 220 may receive information about at least one resource, including 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 control unit 210 may report the measurement result corresponding to the first uplink signal.

[0226] The transmitting / receiving unit 220 may receive the side link signal. The control unit 210 may report the measurement result corresponding to the side link signal.

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

[0228] Here, functions include, but are not limited to, judgment, decision, determination, calculation, calculation, processing, derivation, investigation, search, confirmation, reception, transmission, output, access, resolution, selection, selection, establishment, comparison, assumption, expectation, consideration, broadcasting, notifying, communicating, forwarding, configuring, reconfiguring, allocating (mapping), and assigning. For example, a functional block (configuration part) that enables transmission may be called a transmitting unit or transmitter. In all cases, as mentioned above, the method of implementation is not particularly limited.

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

[0230] In this disclosure, terms such as apparatus, circuit, device, section, and unit are interchangeable. The hardware configuration of the base station 10 and the user terminal 20 may include one or more of the devices shown in the figure, or it may be configured to omit some of the devices.

[0231] For example, although only one processor 1001 is shown in the diagram, there may be multiple processors. Furthermore, processing may be performed by one processor, or by two or more processors simultaneously, sequentially, or by other means. Note that processor 1001 may be implemented using 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 the processor 1001 and memory 1002, which allows the processor 1001 to perform calculations and control communication via the communication device 1004, or to control at least one of the reading and writing of data in the memory 1002 and storage 1003.

[0233] The processor 1001 controls the entire computer, for example, by running an operating system. The processor 1001 may be composed of a central processing unit (CPU) that includes interfaces with peripheral devices, control units, arithmetic units, registers, etc. For example, at least a part of the control unit 110 (210) and the transmitting / receiving unit 120 (220) described above may be implemented by the processor 1001.

[0234] Furthermore, the processor 1001 reads programs (program code), 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 accordingly. The program used is one that causes the computer to execute at least a part of the operations described in the above embodiment. For example, the control unit 110 (210) may be implemented by a control program stored in the memory 1002 and running on the processor 1001, and other functional blocks may be implemented similarly.

[0235] Memory 1002 is a computer-readable recording medium and may consist of at least one of the following: Read Only Memory (ROM), Erasable Programmable ROM (EPROM), Electrically EPROM (EEPROM), Random Access Memory (RAM), or other suitable storage medium. Memory 1002 may also be called a register, cache, or main memory. Memory 1002 can store executable programs (program code), software modules, etc., for carrying out a wireless communication method according to one embodiment of this disclosure.

[0236] Storage 1003 is a computer-readable recording medium and may consist of at least one of the following: a flexible disk, a floppy disk, a magneto-optical disk (e.g., a compact disk (Compact Disc ROM (CD-ROM)), a digital multipurpose disk, a Blu-ray disk), 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 called an auxiliary storage device.

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

[0238] The input device 1005 is an input device that accepts input from an external source (e.g., a keyboard, mouse, microphone, switch, button, sensor, etc.). The output device 1006 is an output device that outputs to an external source (e.g., a display, speaker, light-emitting diode (LED) lamp, etc.). The input device 1005 and the output device 1006 may be configured as an integrated unit (e.g., a touch panel).

[0239] Furthermore, each device, such as the processor 1001 and memory 1002, is connected by a bus 1007 for communicating information. The bus 1007 may be configured using a single bus, or different buses may be configured for 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), and a field programmable gate array (FPGA), and some or all of each functional block may be implemented using such hardware. For example, the processor 1001 may be implemented using at least one of these hardware components.

[0241] (modified version) In addition, terms used in this disclosure and terms necessary for understanding this disclosure may be replaced with terms having the same or similar meanings. For example, channel, symbol, and signal (signal or signaling) may be used interchangeably. Also, a signal may be a message. A reference signal may be abbreviated as RS and may be called a pilot, pilot signal, etc., depending on the applicable standard. Also, a component carrier (CC) may be called a cell, frequency carrier, carrier frequency, etc.

[0242] A wireless frame may consist of one or more periods (frames) in the time domain. Each of these periods (frames) constituting a wireless frame may be called a subframe. Furthermore, a subframe may consist 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 neuralelogy may be communication parameters applied to at least one of the transmission and reception of a signal or channel. The neuralelogy may be, for example, at least one of the following: subcarrier spacing (SCS), bandwidth, symbol length, cyclic prefix length, transmission time interval (TTI), number of symbols per TTI, radio frame configuration, specific filtering processes performed by the transceiver in the frequency domain, or specific windowing processes performed by the transceiver in the time domain.

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

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

[0246] Wireless frames, subframes, slots, minislots, and symbols all represent units of time when transmitting a signal. Wireless frames, subframes, slots, minislots, and symbols may each be referred to by different names. Furthermore, the units of time such as frames, subframes, slots, minislots, and symbols in this disclosure may be interpreted as interchangeable.

[0247] For example, one subframe may be called TTI, multiple consecutive subframes may be called TTI, or one slot or one mini-slot may be called TTI. In other words, at least one of the subframe and TTI may be a subframe (1ms) in existing LTE, a period shorter than 1ms (e.g., 1-13 symbols), or a period longer than 1ms. Note that the unit representing TTI may be called a slot, mini-slot, etc., instead of a subframe.

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

[0249] TTI may be a transmission time unit for channel-encoded data packets (transport blocks), code blocks, code words, etc., or it may be a processing unit for scheduling, link adaptation, etc. Given a TTI, the actual time interval (e.g., number of symbols) to which the transport block, code block, code word, etc. are mapped may be shorter than the given TTI.

[0250] Furthermore, if one slot or one mini-slot is referred to as TTI, then one or more TTIs (i.e., one or more slots or one or more mini-slots) may constitute the minimum time unit of scheduling. In addition, the number of slots (number of mini-slots) that constitute the minimum time unit of scheduling may be controlled.

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

[0252] Furthermore, long TTIs (e.g., normal TTIs, subframes, etc.) may be interpreted as TTIs with a time length exceeding 1 ms, and short TTIs (e.g., shortened TTIs, etc.) may be interpreted as TTIs with a TTI length less than that of a long TTI but 1 ms or more.

[0253] A Resource Block (RB) is a resource allocation unit in the time domain and frequency domain, and in the frequency domain, it may contain one or more consecutive subcarriers. The number of subcarriers in an RB may be the same regardless of the neurology, for example, 12. The number of subcarriers in an RB may be determined based on the neurology.

[0254] Furthermore, an RB may contain one or more symbols in the time domain and may have the length of one slot, one minislot, one subframe, or one TTI. Each TTI, subframe, etc., may consist of one or more resource blocks.

[0255] One or more RBs may also be called Physical RBs (PRBs), Sub-Carrier Groups (SCGs), Resource Element Groups (REGs), PRB pairs, RB pairs, etc.

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

[0257] A Bandwidth Part (BWP) (also called a partial bandwidth) may represent a subset of consecutive common resource blocks (RBs) for a given neurology in a given carrier. Here, the common RBs may be identified by an index of the RBs relative to the carrier's common reference point. PRBs may be defined and numbered within a BWP.

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

[0259] At least one of the configured BWPs may be active, and the UE does not need to assume that it will send or receive a given signal / channel outside of the active BWP. In this disclosure, terms such as "cell" and "carrier" may be read as "BWP".

[0260] The structures described above, such as wireless frames, subframes, slots, minislots, and symbols, are merely illustrative examples. For instance, the number of subframes included in a wireless frame, the number of slots per subframe or wireless frame, the number of minislots within a slot, the number of symbols and RBs included in a slot or minislot, the number of subcarriers included in an RB, and the number of symbols, symbol length, and cyclic prefix (CP) length within a TTI can be varied in various ways.

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

[0262] The names used for parameters and other elements in this disclosure are not restrictive in any way. Furthermore, mathematical formulas and other elements that use these parameters may differ from those expressly disclosed in this disclosure. Various channels (PUCCH, PDCCH, etc.) and information elements can be identified by any suitable name, and therefore, the various names assigned to these various channels and information elements are not restrictive in any way.

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

[0264] Furthermore, information, signals, etc., can be output from upper layers to lower layers and from lower layers to upper layers, or to at least one of the two. Information, signals, etc., may also be input and output via multiple network nodes.

[0265] Input and output information and signals may be stored in a specific location (e.g., memory) or managed using a management table. Input and output information and signals may be overwritten, updated, or appended to. Output information and signals may be deleted. Input information and signals may be transmitted to other devices.

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

[0267] Physical layer signaling may also be called Layer 1 / Layer 2 (L1 / L2) control information (L1 / L2 control signals), L1 control information (L1 control signals), etc. RRC signaling may also be called RRC messages, for example, RRC Connection Setup messages, RRC Connection Reconfiguration messages, etc. MAC signaling may also be communicated using, for example, MAC Control Element (CE).

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

[0269] The determination may be made based on a value represented by 1 bit (either 0 or 1), or based on a boolean value represented by true or false, or may be made by comparing numerical values (for example, comparison with a predetermined value).

[0270] Software should be broadly interpreted to mean instructions, instruction sets, code, code segments, program code, programs, subprograms, software modules, applications, software applications, software packages, routines, subroutines, objects, executable files, execution threads, procedures, functions, etc., whether called software, firmware, middleware, microcode, a hardware description language, or by some other name.

[0271] Also, software, instructions, information, etc. may be transmitted and received via a transmission medium. For example, when software is transmitted from a website, server, or other remote source using at least one of wired technologies (such as coaxial cable, fiber optic cable, twisted pair, Digital Subscriber Line (DSL), etc.) and wireless technologies (such as infrared, microwave, etc.), at least one of these wired and wireless technologies is included within the definition of the transmission medium.

[0272] The terms "system" and "network" used in this disclosure may be used interchangeably. "Network" may mean the devices (such as base stations) included in the network.

[0273] In this 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," and "panel" may be used interchangeably.

[0274] In this disclosure, terms such as "Base Station (BS)", "wireless 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", and "component carrier" may be used interchangeably. Base stations may also be referred to by terms such as macrocell, small cell, femtocell, and picocell.

[0275] A base station can house one or more (e.g., three) cells. If a base station houses multiple cells, the entire coverage area of ​​the base station can be divided into several smaller areas, each of which may also be provided with communication services by a base station subsystem (e.g., a small indoor base station (Remote Radio Head (RRH))). The terms “cell” or “sector” refer to part or all of the coverage area of ​​at least one of the base station and / or base station subsystems that provide communication services in that coverage.

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

[0277] A mobile station may also be called 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 appropriate term.

[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 body, the mobile body itself, etc. The mobile body may be a vehicle (e.g., a car, an airplane, etc.), an unmanned mobile body (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 be a device that does not necessarily move during communication operation. 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, the term "base station" in this disclosure may be interpreted as "user terminal." For example, the various aspects / embodiments of this 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), Vehicle-to-Everything (V2X)). In this case, the user terminal 20 may have the functions that the base station 10 has. Also, terms such as "uplink" and "downlink" may be interpreted as terms corresponding to terminal-to-terminal communication (for example, "sidelink"). For example, uplink channel and downlink channel may be interpreted as sidelink channel.

[0280] Similarly, the term "user terminal" in this disclosure may be replaced with "base station." In this case, the base station 10 may be configured to have the same functions as the user terminal 20 described above.

[0281] In this disclosure, operations performed by a base station may, in some cases, be performed by its upper node. In a network including one or more network nodes with base stations, it is clear that various operations performed for communication with terminals may be performed by the base station, one or more network nodes other than the base station (for example, a Mobility Management Entity (MME), a Serving Gateway (S-GW), etc., but not limited to these), or a combination thereof.

[0282] Each aspect / embodiment described in this disclosure may be used individually, in combination, or switched between during execution. Furthermore, the processing procedures, sequences, flowcharts, etc., of each aspect / embodiment described in this disclosure may be rearranged in order, provided they are consistent. For example, the methods described in this disclosure present various step elements in an exemplary order and are not limited to that specific order.

[0283] Each aspect / embodiment described in this disclosure includes 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 (where x is, for example, an integer or 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®), CDMA2000, Ultra Mobile Broadband (UMB), IEEE 802.11 (Wi-Fi®), IEEE 802.16 (WiMAX®), and IEEE This may be applied to systems utilizing 802.20, Ultra-WideBand (UWB), Bluetooth®, or other appropriate wireless communication methods, as well as next-generation systems that extend these. It may also be applied in combination with multiple systems (for example, a combination of LTE or LTE-A and 5G).

[0284] In this disclosure, the phrase "based on" does not mean "based solely on" unless otherwise specified. In other words, the phrase "based on" means both "based solely on" and "based at least on."

[0285] Any reference to elements using the designations “first,” “second,” etc., as used in this disclosure does not generally limit the quantity or order of those elements. These designations may be used in this disclosure as a convenient way to distinguish between two or more elements. Accordingly, the references to the first and second elements do not imply that only two elements may be employed or that the first element must precede the second element in any way.

[0286] The term “determining” as used in this disclosure may encompass a wide variety of actions. For example, “determining” may be considered to include judging, calculating, computing, processing, deriving, investigating, looking up, searching, inquiry (e.g., searching in tables, databases, or other data structures), ascertaining, etc.

[0287] Furthermore, "judgment (decision)" may be considered as "judging (deciding)" things like receiving (e.g., receiving information), transmitting (e.g., sending information), input, output, accessing (e.g., accessing data in memory).

[0288] Furthermore, "judgment (decision)" can be considered as "judging (deciding)" something like resolving, selecting, choosing, establishing, comparing, etc. In other words, "judgment (decision)" can be considered as "judging (deciding)" something about an action.

[0289] Also, "judgment (decision)" may be read as "assuming", "expecting", "considering", etc.

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

[0291] The terms "connected" and "coupled" used in the present disclosure, or any variations thereof, mean 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 "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 "accessed".

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

[0293] In the present disclosure, the term "A and B are different" may mean that "A and B are different from each other". Note that the term may also mean that "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] Where the terms “include,” “including,” and variations thereof are used in this disclosure, these terms are intended to be inclusive, as is the term “comprising.” Furthermore, the term “or” as used in this disclosure is not intended to mean exclusive OR.

[0295] In this disclosure, if articles are added by translation, such as a, an, and the in English, this disclosure may include the fact that the noun following these articles is plural.

[0296] Although the invention described herein has been explained in detail above, it will be clear to those skilled in the art that the invention described herein is not limited to the embodiments described herein. The invention described herein can be implemented in modified and altered forms without departing from the spirit and scope of the invention as defined by the claims. Therefore, the descriptions herein are for illustrative purposes only and do not imply any limitation on the invention described herein.

Claims

1. A receiving unit that receives any of the following signals: multiple downlink signals, a first uplink signal from another terminal, and a sidelink signal from the other terminal. A terminal having a control unit that reports the measurement results of the first uplink signal and controls the transmission of the uplink channel using the other terminal using the resources based on the report.

2. The aforementioned multiple downlink signals are associated with each of the multiple beams, The receiving unit receives the settings for measuring the plurality of downlink signals, and based on the settings, receives the plurality of downlink signals. The terminal according to claim 1, wherein the control unit reports a plurality of measurement results corresponding to each of the plurality of downlink signals.

3. The terminal according to claim 1, wherein the receiving unit receives information regarding the resources of the first uplink signal and the second uplink signal transmitted from its own terminal, and receives the first uplink signal based on the information.

4. The receiving unit receives the side link signal, The terminal according to claim 1, wherein the control unit reports the measurement result corresponding to the side link signal.

5. The steps include receiving one of the following signals: multiple downlink signals, a first uplink signal from another terminal, and a sidelink signal from the other terminal. A wireless communication method for a terminal, comprising the steps of: reporting the measurement results of the first uplink signal; and controlling the transmission of the uplink channel using the other terminal using the resources based on the report.

6. A system comprising a terminal and a base station, The aforementioned terminal is A receiving unit that receives any of the following signals: multiple downlink signals, a first uplink signal from another terminal, and a sidelink signal from the other terminal. The system includes a control unit that reports the measurement results of the first uplink signal and controls the transmission of the uplink channel using the other terminals using the resources based on the report, The base station is a system having a transmitting unit that transmits the plurality of downlink signals and transmits information regarding the resources of the first uplink signal and the second uplink signal.

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