Terminal, wireless communication method, and base station

Abstract

A terminal involved in one embodiment of the present disclosure includes: a control unit, which controls a first uplink channel so that, when a first uplink channel and a plurality of second uplink channels that have a lower priority than the first uplink channel and do not overlap in the time domain, at least one of the uplink control information corresponding to the plurality of second uplink channels is mapped to the first uplink channel; and a sending unit, which uses the first uplink channel to send at least one of the uplink control information corresponding to the plurality of second uplink channels.

Description

Technical Field

[0001] The present disclosure relates to a terminal, a wireless communication method, and a base station in a next-generation mobile communication system. Background Art

[0002] In the Universal Mobile Telecommunications System (UMTS) network, Long Term Evolution (LTE) has been standardized to achieve even higher data rates and lower latency (Non-Patent Document 1). Furthermore, LTE-Advanced (3GPP Rel. 10-14) has been standardized to further enhance the capacity and sophistication of LTE (Release (Rel.) 8 and 9) (Third Generation Partnership Project (3GPP)).

[0003] Successor systems to LTE (for example, also referred to as fifth-generation mobile communication system (5G), 5G+ (plus), New Radio (NR), 3GPP Rel. 15 and later, etc.) are also under study.

[0004] Prior art literature

[0005] Non-patent literature

[0006] Non-Patent Document 1: 3GPP TS 36.300 V8.12.0 “Evolved Universal Terrestrial Radio Access (E-UTRA) and Evolved Universal Terrestrial Radio Access Network (E-UTRAN); Overall description; Stage 2 (Release 8)”, April 2010 Summary of the Invention

[0007] Problems to be solved by the invention

[0008] In future wireless communication systems (e.g., 5G, NR, etc.), multiple services (also called use cases, communication types, etc.) with different communication requirements are envisioned to coexist, such as high speed and large capacity (e.g., enhanced Mobile Broad Band (eMBB)), a large number of terminals (e.g., massive Machine Type Communication (mMTC) and Internet of Things (IoT)), and ultra-reliable and low latency (e.g., Ultra Reliable and Low Latency Communications (URLLC)).

[0009] After Rel. 16, studies are underway to prioritize signals / channels and control communications based on the priorities assigned to each signal / channel. For example, if multiple signals / channels overlap, transmission and reception are controlled based on the priorities of each signal / channel.

[0010] On the other hand, even when multiple UL transmissions with different priorities overlap in the time domain, it is conceivable to allow the multiple UL transmissions according to the communication environment, communication conditions, and UE capabilities. However, in this case, how to control the UL transmissions has not yet been fully studied.

[0011] Therefore, one of the objects of the present disclosure is to provide a terminal, a wireless communication method, and a base station that can appropriately control one or more UL transmissions that support setting of priorities.

[0012] Means for solving problems

[0013] The terminal involved in one embodiment of the present invention is characterized in that it has: a control unit that controls a first uplink channel and a plurality of second uplink channels that have a lower priority than the first uplink channel and do not overlap in the time domain so that at least one of the uplink control information corresponding to the plurality of second uplink channels is mapped to the first uplink channel when the first uplink channel overlaps with the plurality of second uplink channels; and a sending unit that uses the first uplink channel to send at least one of the uplink control information corresponding to the plurality of second uplink channels.

[0014] Effects of the Invention

[0015] According to one embodiment of the present disclosure, it is possible to appropriately control one or more UL transmissions that support setting of priorities. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1A as well as Figure 1BThis is a diagram showing an example of UL transmission control based on priority.

[0017] Figure 2 This is a diagram showing another example of UL transmission control based on priority.

[0018] Figure 3 This is a diagram showing an example of a case where multiple HARQ-ACK codebooks are transmitted in a specific time slot.

[0019] Figure 4 This is a diagram showing an example of a case where multiple HARQ-ACK codebooks overlap in the time domain.

[0020] Figures 5A-5D This is a diagram showing an example of a case where a certain UL channel overlaps with a plurality of UL channels having different priorities.

[0021] Figure 6 This is a diagram showing an example of UL transmission control based on the rules of Rel.16.

[0022] Figure 7 This is a diagram showing an example of UL transmission control in the first example.

[0023] Figure 8 This is a diagram showing another example of UL transmission control in the first embodiment.

[0024] Figure 9 This is a diagram showing another example of UL transmission control in the first example.

[0025] Figure 10 This is a diagram showing an example of UL transmission control in the second example.

[0026] Figure 11 This is a diagram showing another example of UL transmission control in the second example.

[0027] Figures 12A-12C This is a diagram showing an example of UL transmission control in the third example.

[0028] Figures 13A-13C This is a diagram showing another example of UL transmission control in the third example.

[0029] Figure 14 This is a diagram showing an example of UL transmission control in the fourth example.

[0030] Figure 15 This is a diagram showing another example of UL transmission control in the fourth example.

[0031] Figure 16 This is a diagram showing an example of a schematic configuration of a wireless communication system according to one embodiment.

[0032] Figure 17 This is a diagram showing an example of the configuration of a base station according to one embodiment.

[0033] Figure 18 This is a diagram showing an example of the configuration of a user terminal according to one embodiment.

[0034] Figure 19 This is a diagram showing an example of the hardware configuration of a base station and a user terminal according to one embodiment. DETAILED DESCRIPTION

[0035] <Business Type>

[0036] Future wireless communication systems (e.g., NR) envision service types (also referred to as services, service types, communication types, use cases, etc.), including further advanced mobile broadband (e.g., enhanced mobile broadband (eMBB)), large-scale communications that enable a large number of simultaneous connections (e.g., massive machine type communications (mMTC) and the Internet of Things (IoT)), and ultra-reliable and low-latency communications (e.g., Ultra-Reliable and Low-Latency Communications (URLLC)). For example, URLLC requires lower latency and higher reliability than eMBB.

[0037] Regarding the service type, it can also be identified in the physical layer based on at least one of the following.

[0038] Logical channels with different priorities;

[0039] Modulation and Coding Scheme (MCS) table (MCS index table);

[0040] Channel Quality Indication (CQI) table;

[0041] DCI format;

[0042] The radio network temporary identifier (System Information - Radio Network Temporary Identifier (RNTI)) used for scrambling (masking) of the (additional) cyclic redundancy check (CRC) bits included in the DCI (DCI format);

[0043] RRC (Radio Resource Control) parameters;

[0044] Specific RNTI (e.g., RNTI for URLLC, MCS-C-RNTI, etc.);

[0045] Search space;

[0046] ·Specific fields within DCI (e.g., newly added fields or reuse of existing fields).

[0047] Specifically, the service type of HARQ-ACK for PDSCH may also be determined based on at least one of the following.

[0048] The MCS index table used to determine at least one of the modulation order, target coding rate, and transport block size (TBS) of the PDSCH (e.g., whether to use MCS index table 3).

[0049] RNTI used for CRC scrambling of the DCI used for scheduling the PDSCH (for example, whether CRC scrambling is performed using C-RNTI or MCS-C-RNTI).

[0050] In addition, the service type of the SR may also be determined based on a higher-layer parameter used as an SR identifier (SR-ID). The higher-layer parameter may also indicate whether the service type of the SR is eMBB or URLLC.

[0051] In addition, the service type of the CSI may also be determined based on the configuration information (CSIreportSetting) related to the CSI report, the DCI type used in the trigger, or the DCI transmission parameters. The configuration information, DCI type, etc. may also indicate whether the service type of the CSI is eMBB or URLLC. In addition, the configuration information may also be a higher-layer parameter.

[0052] In addition, the service type of PUSCH can also be determined based on at least one of the following.

[0053] The MCS index table used to determine at least one of the modulation order, target coding rate, and TBS of the PUSCH (e.g., whether to use MCS index table 3),

[0054] RNTI used for CRC scrambling of the DCI used for scheduling the PUSCH (for example, whether CRC scrambling is performed using C-RNTI or MCS-C-RNTI).

[0055] The service type may be associated with communication requirements (e.g., requirements and conditions such as delay and error rate), data type (e.g., voice, data), and the like.

[0056] The difference between the requirements of URLLC and eMBB is that the latency of URLLC is smaller than that of eMBB, or that the requirements of URLLC include reliability requirements.

[0057] For example, the requirements for the user (U) plane delay of eMBB may also include: the U-plane delay of the downlink is 4ms, and the U-plane delay of the uplink is 4ms. On the other hand, the requirements for the U-plane delay of URLLC may also include: the U-plane delay of the downlink is 0.5ms, and the U-plane delay of the uplink is 0.5ms. In addition, the requirements for the reliability of URLLC may also include: the error rate of 32 bytes in a U-plane delay of 1ms is 10 -5 .

[0058] Furthermore, enhanced Ultra Reliable and Low Latency Communications (eURLLC) is being researched to enhance the reliability of services used primarily for unicast data. Hereinafter, URLLC and eURLLC will be referred to simply as URLLC when no distinction is made between them.

[0059] <Priority Setting>

[0060] In NR versions after Rel.16, studies are underway to set multiple levels (e.g., two levels) of priority for specific signals or channels. For example, it is envisioned that different priorities could be assigned to each signal or channel corresponding to a different service type (also known as service, service type, communication type, use case, etc.) to control communications (e.g., transmission control in the event of a conflict). This would allow different priorities to be assigned to the same signal or channel based on service type, etc., to control communications.

[0061] Priority may be set for at least one of a signal (e.g., UCI such as HARQ-ACK, reference signals, etc.), a channel (e.g., PDSCH, PUSCH, PUCCH, etc.), a reference signal (e.g., channel state information (CSI), sounding reference signal (SRS), etc.), a scheduling request (SR), and a HARQ-ACK codebook. Furthermore, priority may be set separately for the PUCCH used for SR transmission, the PUCCH used for HARQ-ACK transmission, and the PUCCH used for CSI transmission.

[0062] The priority may be defined by a first priority (eg, high) and a second priority (eg, low) lower than the first priority. Alternatively, three or more priority levels may be set.

[0063] For example, priorities may be set for HARQ-ACK for dynamically scheduled PDSCHs, HARQ-ACK for semi-persistent PDSCHs (SPSPDSCHs), and HARQ-ACK for SPS PDSCH releases. Alternatively, priorities may be set for HARQ-ACK codebooks corresponding to these HARQ-ACKs. In addition, when setting priorities for PDSCHs, the priority of the PDSCH may be replaced with the priority of the HARQ-ACK for the PDSCH.

[0064] In addition, priority may be set for PUSCH based on dynamic grant, PUSCH based on set grant, and the like.

[0065] Information related to the priority can also be notified to the UE from the base station using at least one of the higher layer signaling and the DCI. For example, the priority of the scheduling request can also be set by a higher layer parameter (e.g., schedulingRequestPriority). The priority of the HARQ-ACK for the PDSCH (e.g., dynamic PDSCH) scheduled by DCI can also be notified by the DCI. The priority of the HARQ-ACK for the SPS PDSCH can also be set by a higher layer parameter (e.g., HARQ-ACK-Codebook-indicator-forSPS), or can be notified by a DCI for indicating the activation of the SPS PDSCH. A specific priority (e.g., low) can be set for the P-CSI / SP-CSI sent through the PUCCH. On the other hand, the priority of the A-CSI / SP-CSI sent through the PUSCH can also be notified by DCI (e.g., triggering DCI or activation DCI).

[0066] The priority of a PUSCH based on a dynamic grant can also be notified via the DCI used to schedule the PUSCH. The priority of a PUSCH based on a set grant can also be set via a higher-layer parameter (e.g., priority). A specific priority (e.g., low) can also be assigned to P-SRS / SP-SRS and A-SRS triggered by DCI (e.g., DCI format 0_1 / DCI format 2_3).

[0067] (Overlap of UL transmission)

[0068] In the case where multiple UL signals / UL channels overlap (or collide), the UE may also control UL transmission based on priority.

[0069] The so-called overlapping of multiple UL signals / UL channels can also refer to the situation where the time resources (or time resources and frequency resources) of multiple UL signals / UL channels overlap, or the situation where the transmission timing of multiple UL signals / UL channels overlaps. Time resources can also be replaced with time domain or time domain. Time resources can also be codewords, time slots, subslots, or subframe units.

[0070] Overlapping of multiple UL signals / UL channels within the same UE (e.g., intra-UE) may also mean overlapping of multiple UL signals / UL channels within at least the same time resource (e.g., symbol). Furthermore, collision of UL signals / UL channels between different UEs (e.g., inter-UE) may also mean overlapping of multiple UL signals / UL channels within the same time resource (e.g., symbol) and frequency resource (e.g., RB).

[0071] For example, when multiple UL signals / UL channels with the same priority overlap, the UE controls so that the multiple UL signals / UL channels are multiplexed into one UL channel for transmission (see Figure 1A ).

[0072] exist Figure 1A , a case where HARQ-ACK (or PUCCH for transmitting HARQ-ACK) with a first priority (high) is overlapped with UL data / UL-SCH (or PUSCH for transmitting UL data / UL-SCH) with a first priority (high) is shown. In this case, the UE multiplexes (or maps) the HARQ-ACK onto the PUSCH and transmits both the UL data and the HARQ-ACK.

[0073] In the case where multiple UL signals / UL channels with different priorities overlap, the UE may also perform control so that the UL transmission with a higher priority is performed (for example, the UL transmission with a higher priority is prioritized) and the UL transmission with a lower priority is not performed (for example, discarded) (see Figure 1B ).

[0074] exist Figure 1B , illustrates a situation where UL data / HARQ-ACK (or the UL channel for transmitting UL data / HARQ-ACK) assigned a first priority (high) overlaps with UL data / HARQ-ACK (or the UL channel for transmitting UL data / HARQ-ACK) assigned a second priority (low). In this case, the UE controls the UL data / HARQ-ACK with the lower priority to be discarded and prioritizes the transmission of the higher priority UL data / HARQ-ACK. Furthermore, the UE may also change the transmission timing of the lower priority UL transmission (e.g., by delaying or offsetting it).

[0075] In the case where more than two (or more than three) UL signals / UL channels overlap in the time domain, transmission can also be controlled in two steps (see Figure 2 ).

[0076] In step 1, one UL channel is selected for multiplexing UL signals transmitted in UL transmissions having the same priority. Figure 2 In the embodiment of the present invention, SR (or PUCCH for SR transmission) with a first priority (high) and HARQ-ACK (or PUCCH for HARQ-ACK transmission) may be multiplexed into a specific UL channel (here, PUCCH for HARQ-ACK transmission). Similarly, HARQ-ACK (or PUCCH for HARQ-ACK transmission) with a second priority (low) and data (or PUSCH for data / UL-SCH transmission) may be multiplexed into a specific UL channel (here, PUSCH).

[0077] In step 2, control may also be performed so that among UL transmissions with different priorities, the UL transmission with a higher priority is transmitted first and the UL transmission with a lower priority is discarded. Figure 2 Alternatively, the PUCCH for sending SR and HARQ-ACK with a first priority (high) may be sent preferentially, and the PUSCH for sending HARQ-ACK and data with a second priority (low) may be discarded.

[0078] In this way, the UE can resolve conflicts between multiple UL transmissions with the same priority through step 1, and resolve conflicts between multiple UL transmissions with different priorities through step 2.

[0079] (Multiple HARQ-ACK codebooks)

[0080] In Rel. 16 and later, a maximum of N HARQ-ACK codebooks may be configured in a specific time slot (e.g., 1 time slot). N may also be 2, for example. For example, when N is 2, the UE may configure two HARQ-ACK codebooks of different priorities (or codebooks corresponding to different priorities / different service types) in a specific time slot and feed back these codebooks.

[0081] The UE may also control the generation of the HARQ-ACK codebook (e.g., generation of HARQ-ACK bits within the HARQ-ACK codebook) based on the value of the priority notification field (e.g., priority indicator field) included in the DCI corresponding to each PDSCH. Figure 3 This figure shows an example of generating and feeding back two HARQ-ACK codebooks (here, CB#0 and CB#1) corresponding to different priorities in time slot #n. CB#0 corresponds to the second priority (low) or eMBB, and CB#1 corresponds to the first priority (high) or URLLC.

[0082] exist Figure 3 The DCI corresponding to the PDSCH transmitted in slot #n-5 notifies that the HARQ-ACK feedback timing is slot #n (K1=5) and the second priority (low). The DCI corresponding to the PDSCH transmitted in slot #n-3 notifies that the HARQ-ACK feedback timing is slot #n (K1=3) and the second priority (low).

[0083] exist Figure 3 In the example, the DCI corresponding to the PDSCH sent in time slot #n-2 (sub-time slots #n-4, #n-5) is used to notify that the feedback timing of HARQ-ACK is time slot #n (sub-time slot #n) (K1=5 sub-time slots) and is the first priority (high).

[0084] In this case, the UE may generate two HARQ-ACK codebooks (CB#0 and CB#1) in time slot #n and provide feedback.

[0085] On the other hand, it is also considered that the UL resources (eg, PUCCH / PUSCH) for CB#0 and the UL resources for CB#1 overlap in the time domain (see Figure 4 ). In this case, it is considered to control the transmission of HARQ-ACK based on the priority corresponding to HARQ-ACK (or CB). Specifically, CB with high priority is transmitted and CB with low priority is discarded.

[0086] As described above, studies are underway to control the UE so that, when a plurality of UL transmissions overlap in the time domain, only a high-priority UL transmission (or UL channel / UL signal) is transmitted.

[0087] On the other hand, even when multiple UL transmissions with different priorities overlap in the time domain, it is considered possible to allow these multiple UL transmissions based on the communication environment, communication conditions, and UE capabilities. Supporting these multiple UL transmissions is beneficial from the perspectives of reducing latency and spectral efficiency.

[0088] The communication environment / communication conditions / UE capabilities may also refer to the cells to which multiple UL transmissions are respectively transmitted, or the transmission / reception processing capabilities supported by the UE (e.g., RF circuitry included in the UE). For example, when multiple UL transmissions with different priorities are scheduled within a cell (intra-cell) or between cells (inter-cell) supported by different RFs, these multiple UL transmissions may be supported (e.g., simultaneous transmission).

[0089] However, when the transmission of a plurality of UL transmissions with different priorities is supported / permitted, how to control the UL transmission becomes a problem.

[0090] For example, as shown in the following cases 1 to 4, it is also assumed that a certain UL channel and multiple UL channels with different priorities from the UL channel overlap in the time domain. Cases 1 to 4 can be shown as Figure 2 The state after step 1 in (for example, situations 1 to 3) can also be shown, and the state before step 1 (for example, situation 4) can also be shown.

[0091] <Scenario 1>

[0092] Case 1 corresponds to a situation where a plurality of UL channels HP#1 and HP#2 corresponding to a first priority (e.g., high) overlap with a UL channel LP#3 corresponding to a second priority (e.g., low) lower than the first priority (see Figure 5A ). It is assumed that the multiple UL channels HP#1 and HP#2 of the first priority do not overlap in the time domain.

[0093] <Scenario 2>

[0094] Case 2 corresponds to a situation where the UL channel HP#2 corresponding to the first priority (e.g., high) and the multiple UL channels LP#3 and LP#4 corresponding to the second priority (e.g., low) overlap (see Figure 5B ). It is assumed that the multiple UL channels LP#3 and LP#4 of the second priority do not overlap in the time domain.

[0095] <Scenario 3>

[0096] Case 3 corresponds to a situation where multiple UL channels HP#1 and HP#2 corresponding to the first priority (e.g., high) overlap with the UL channel LP#3 corresponding to the second priority (e.g., low). In addition, it corresponds to a situation where the UL channel HP#2 corresponding to the first priority (e.g., high) overlaps with the other UL channel LP#4 corresponding to the second priority (e.g., low). (See Figure 5C ). It is assumed that the multiple UL channels HP#1 and HP#2 of the first priority do not overlap in the time domain. In addition, it is assumed that the multiple UL channels LP#3 and LP#4 of the second priority do not overlap in the time domain.

[0097] <Scenario 4>

[0098] Case 4 corresponds to a case where a plurality of UL channels HP#1 and HP#2 corresponding to the first priority (e.g., high) overlap with a UL channel LP#3 corresponding to the second priority (e.g., low). In addition, this corresponds to a case where a UL channel LP#3 corresponding to the second priority (e.g., high) overlaps with another UL channel LP#4 corresponding to the second priority (e.g., low). (See Figure 5D ). A scenario is envisioned where the multiple UL channels HP#1 and HP#2 of the first priority do not overlap in the time domain. Furthermore, a scenario is envisioned where the multiple UL channels LP#4 of the second priority do not overlap in the time domain with the multiple UL channels HP#1 and HP#2 of the first priority. Furthermore, scenario 4 may also include a scenario where only one of the UL channels HP#1 and HP#2 is configured.

[0099] Rel. 16 supports the transmission of multiple UL channels (e.g., PUCCH) of the same priority and non-overlapping within a time slot. In this case, if UL channels of different priorities overlap, the lower-priority UL channel (or the second-priority UCI / UL data assigned to (or corresponding to) that UL channel) is discarded.

[0100] For example, regarding case 4 ( Figure 5D ), when the collision handling of Rel.16 is applied, initially in step 1, one of UCI#3 corresponding to UL channel LP#3 and UCI#4 corresponding to UL channel LP#4 with the same priority is multiplexed to the other UL channel (refer to Figure 6 Here, UCI#4 is multiplexed onto the second UL channel LP#3. Subsequently, in step 2, because the second-priority (low) UL channel LP#3 overlaps with the first-priority (high) UL channel HP#1 (or HP#2), UL channel LP#3 is discarded. In this case, in the stage prior to step 1, the first-priority (high) UL channel LP#4, which does not overlap with HP#2, is also discarded.

[0101] Rel. 17 and later versions assume that, in cases 1 to 4, even when multiple UL transmissions with different priorities overlap in the time domain, the transmission of UL transmissions with different priorities (e.g., UCI, data, etc.) is supported / allowed. However, in this case, how to control UL transmissions becomes a problem.

[0102] Alternatively, in case 4, the following situation can be considered: control is performed so that the second priority UL transmission (e.g., LP#4) that does not overlap with the first priority UL transmission is not discarded before the application of contention resolution. However, in this case, how to control the UL transmission becomes a problem.

[0103] The inventors of the present invention focused on the situation where multiple UL channels that do not overlap in the time domain overlap with other UL channels with different priorities in the time domain, studied UL transmission control in this situation, and conceived of one aspect of the present embodiment.

[0104] Alternatively, the inventors of the present invention focused on a situation where, with respect to multiple UL channels (e.g., LP#3, LP#4) overlapping in the time domain, a UL channel (e.g., LP#1) having a higher priority than the multiple UL channels overlaps with only one of the multiple UL channels (e.g., situation 4), and studied the UL transmission control in this situation, thereby coming up with a method of the present embodiment.

[0105] Hereinafter, embodiments of the present disclosure will be described in detail with reference to the accompanying drawings. The structures described in each embodiment may be applied individually or in combination.

[0106] In addition, in the present disclosure, “A / B” can also be replaced by at least one of A and B, and “A / B / C” can also be replaced by at least one of A, B, and C.

[0107] In the following description, two levels of UL transmission priority, a first priority (high) and a second priority (low), are used as an example. However, the priority is not limited to two levels, and three or more levels of priority may be set.

[0108] In this disclosure, the terms "UL transmission," "UL channel," and "UL signal" may be used interchangeably. Furthermore, in this disclosure, the terms "carrier," "cell," "CC," "BWP," and "band" may be used interchangeably. Furthermore, in this disclosure, the term "transmitted" may be used interchangeably with "scheduled," "configured," or "allocated."

[0109] Furthermore, in the present disclosure, the term "time domain" may be replaced with "time domain," "time resource," or "code element." Furthermore, in the present disclosure, the term "overlap" may be replaced with "time collision" or "repetition." Furthermore, in the present disclosure, the term "discard" may be replaced with "truncation" or "deletion."

[0110] (First Method)

[0111] In the first embodiment, an example of UL transmission control is described in which a UL channel of the second priority (e.g., low) overlaps with multiple UL channels of the first priority (e.g., high) in the time domain (e.g., Case 1). Assume that multiple UL channels of the first priority do not overlap in the time domain.

[0112] In the present disclosure, the term "UL channel of first priority" may refer to a UL channel corresponding to UCI of first priority, or may refer to a UL channel used in the allocation / mapping / transmission of UCI of first priority. UCI of first priority may also refer to a UCI for which first priority is set / designated / defined. A UL channel of second priority may refer to a UL channel corresponding to UCI of second priority, or may refer to a UL channel used in the allocation / mapping / transmission of UCI of second priority. UCI of second priority may also refer to a UCI for which second priority is set / designated / defined.

[0113] In this embodiment, the case where the multiple first UL channels and the second UL channels are each an uplink control channel (PUCCH) is taken as an example, but the present invention is not limited to this. At least one of the multiple first UL channels may also be another UL channel (e.g., PUSCH), the second UL channel may also be another UL channel (e.g., PUSCH), and the multiple first UL channels and the second UL channels may also be another UL channel (e.g., PUSCH). In addition, UCI may also be replaced with UL data / UL-SCH.

[0114] In the following description, it is assumed that a plurality of first UL channels HP#1 and HP#2 of the first priority, which do not overlap in the time domain, and a second UL channel HP#3 of the second priority overlap (see Figure 5A ). Figure 5A It can also show the conflict resolution when UL channels of the same priority overlap (e.g. Figure 2 Alternatively, UCI#1 may correspond to (or be allocated to) the first UL channel HP#1, UCI#2 may correspond to the first UL channel HP#2, and UCI#3 may correspond to the second UL channel LP#3.

[0115] When specific conditions are met, the UE may also use at least one of the following options 1-1 to 1-3 to multiplex / map the second UCI corresponding to the second UL channel to the first UCI (or the first UL channel).

[0116] In this embodiment, the specific condition may be a required timeline for at least one of the first UCI / first UL channel and the second UCI / second UL channel. The specific condition may also be the maximum coding rate of the multiplexed UL channel resource (e.g., the first UL channel resource multiplexed with the second UCI). If the specific condition is not met (e.g., if a specific timeline is not met / if the maximum coding rate exceeds a specific value), the UE may control the second UCI (or second UL channel) to be discarded.

[0117] <Option 1-1>

[0118] The UE may also control the second UCI corresponding to the second UL channel to be mapped to a specific UL channel (e.g., one UL channel) among the multiple first UL channels. The specific UL channel may also be determined based on the transmission timing of the first UL channel. For example, the specific UL channel may be the first UL channel / UCI (e.g., the first PUCCH / first UCI) that is initially transmitted in the time domain among the multiple first UL channels / UCIs (see Figure 7 ).

[0119] The UE multiplexes / maps the first UCI #1 corresponding to the first UL channel #1 and the second UCI #3 corresponding to the second UL channel #3 onto the first UL channel HP#1. The UE may also control the second UL channel #3 not to be transmitted (e.g., discarded). The resources of the first UL channel HP#1 onto which the second UCI #3 is multiplexed / mapped may remain unchanged regardless of the multiplexing of the second UCI #3, or may be changed based on the multiplexing of the second UCI #3.

[0120] By using the first UL channel HP#1, which is transmitted first in the time domain, to transmit the second UCI#3, the delay of the second UCI#3 can be reduced. Furthermore, since the second UCI#3 is not mapped to the second and subsequent first UL channels HP#2 / UCI#2 in the time domain, the impact on the transmission of the second and subsequent first UL channels / UCI can be reduced.

[0121] Regarding the second UCI #3 mapped to the first UL channel #1, a portion may be discarded or bundled. For example, the UE may control the mapping method of the second UCI #3 for the first UL channel #1 based on the size / capacity of the first UL channel #1.

[0122] In addition, Figure 7 The case where the second UCI#3 is mapped to the first UL channel HP#1 / UCI#1 that is initially sent in the time domain is shown in the figure. However, the structure may also be such that the second UCI#3 is mapped to the first UL channel HP#2 / UCI#2 that is last sent in the time domain.

[0123] <Option 1-2>

[0124] The specific UL channel used to map the second UCI corresponding to the second UL channel may also be determined based on the size / capacity of the first UL channel, or the number of bits / bit size / payload capacity that can be transmitted. For example, the specific UL channel may be the first UL channel / UCI that can transmit more bits (see Figure 8 ).

[0125] The UE selects a first UL channel / UCI capable of transmitting more bits from a plurality of first UL channels, and multiplexes / maps the second UCI in the selected first UL channel / UCI. Figure 8 shows a case where the second UCI #3 corresponding to the second UL channel #3 is mapped to the first UL channel HP#2 with a larger size / capacity. Alternatively, control may be performed so that the second UL channel LP#3 is not transmitted (e.g., discarded). The resources of the first UL channel HP#2 onto which the second UCI #3 is multiplexed / mapped may remain unchanged regardless of the multiplexing of the second UCI #3, or may be changed depending on the multiplexing of the second UCI #3.

[0126] By using the larger first UL channel to transmit the second UCI, even when the first and second UCI are transmitted on the same UL channel, they can be properly transmitted. Furthermore, since the second UCI is not mapped to the smaller first UL channel / UCI, the impact on the transmission of the smaller first UL channel / UCI can be minimized.

[0127] Regarding the second UCI #3 mapped to the first UL channel HP#1, a portion may be discarded or bundled. For example, the UE may control the mapping method of the second UCI #3 for the first UL channel HP#1 based on the size / capacity of the first UL channel HP#1.

[0128] <Options 1-3>

[0129] The UE may also control the second UCI corresponding to the second UL channel to be mapped to multiple first UL channels / UCIs. The second UCI may also be split and multiplexed / mapped to multiple first UL channels / UCIs (see Figure 9 ).

[0130] Figure 9 It shows that the UE splits the second UCI#3, multiplexes / maps the split first part (first part) to the first UL channel HP#1 (or first UCI#1), and then multiplexes / maps the second part (second part) to the second UL channel HP#2 (or first UCI#2).

[0131] The splitting method of the second UCI may be pre-defined in the specification (for example, split into a specific ratio such as half-half), may be notified to the UE from the base station, or may be determined based on specific parameters (for example, UCI type).

[0132] Regarding the second UCI #3 mapped to each of the multiple first UL channels HP#1 and HP#2, a portion may be discarded or bundled. For example, the UE may control the mapping method of the second UCI #3 for the first UL channels HP#1 and HP#2 based on the size / capacity of the first UL channels HP#1 and HP#2. The discarding of a portion of the second UCI #3 or the bundling of the second UCI #3 may be performed either before or after the second UCI #3 is split.

[0133] By dividing the second UCI into a plurality of parts and distributively multiplexing the parts onto a plurality of first UL channels / UCIs, it is possible to suppress the influence on the first UL channels / UCIs.

[0134] in addition, Figure 9 , the second UCI is divided and mapped to multiple first UL channels / first UCIs, but the present invention is not limited thereto. For example, the second UCI may be mapped to multiple first UL channels / first UCIs without being divided.

[0135] (Second Method)

[0136] The second embodiment describes an example of UL transmission control when a UL channel of a first priority (e.g., high) and multiple UL channels of a second priority (e.g., low) overlap in the time domain (e.g., scenario 2). Assume that the multiple UL channels of the second priority do not overlap in the time domain.

[0137] In the following description, it is assumed that a plurality of second priority UL channels LP#3 and LP#4 that do not overlap in the time domain overlap with the first priority UL channel HP#2 (see Figure 5B ). Figure 5B It can also show conflict resolution in the case of overlap of the same priority (e.g., Figure 2 The state after step 1).

[0138] The UE may also multiplex / map at least one of the multiple second UCIs #3 and #4 corresponding to the second UL channels LP#3 and LP#4, respectively, to the first UCI #2 (or the first UL channel HP#2) by using at least one of the following options 2-1 to 2-2 if specific conditions are met.

[0139] <Option 2-1>

[0140] The UE may also control to combine the second UCIs corresponding to the plurality of second UL channels, and multiplex / map them to the first UL channel #1 (or the first UCI). For example, the UE may first combine the second UCI #3 corresponding to the second UL channel LP#3 and the second UCI #4 corresponding to the second UL channel LP#4, and then multiplex / map the combined second UCI to the first UL channel HP#2 (or the first UCI #2) (see Figure 10 ).

[0141] When both (or at least one) of the second UL channels LP#3 and LP#4 overlap with the first UL channel HP#2 (or the first UCI#2), the UE may first apply synthesis (or multiplexing / mapping) of multiple non-overlapping second UCIs (non-overlapping low-priority UCIs). Thereafter, the UE may multiplex / map the synthesized second UCI and the first UCI.

[0142] Regarding the second UCI #3 and #4 mapped in the first UL channel HP#2, a portion may be discarded or bundled. For example, the UE may control the mapping method of the second UCI based on the size / capacity of the first UL channel HP#2. Discarding a portion of the second UCI or bundling the second UCI may be performed either before or after the second UCI is synthesized.

[0143] <Option 2-2>

[0144] The UE may also control to multiplex / map specific second UCI (e.g., one second UCI) among the second UCIs #3 and #4 corresponding to the plurality of second UL channels LP#3 and LP#4, respectively, to the first UL channel HP#2 (or first UCI #2). In this case, the UE may also control not to transmit (e.g., discard) second UCIs other than the specific second UCI.

[0145] The specific second UCI transmitted using the first UL channel (or the second UCI to be discarded) may also be determined based on specific conditions / specific rules. The specific conditions / specific rules may also be defined in a specification or set / notified to the UE from the base station via higher layer signaling.

[0146] The specific condition / specific rule may be determined based on the type / content / category of the UCI, for example. In this case, different priorities may be set for the UCIs corresponding to the second priority.

[0147] For example, the priority of UCI#A (e.g., HARQ-ACK / SR) corresponding to the second priority may be set higher than that of UCI#B (e.g., CSI) corresponding to the second priority. In a case where UCI#A corresponds to the second UL channel LP#3 and UCI#B corresponds to the second UL channel LP#4, control may be performed so that UCI#A (UCI#3) is multiplexed / mapped to the first UL channel HP#2 and UCI#B (UCI#4) is not transmitted (e.g., discarded) (see Figure 11 ).

[0148] This can suppress an increase in the number of bits of the second UCI multiplexed / mapped in the first UL channel, thereby enabling appropriate transmission of the first UL channel. Furthermore, by controlling the transmission of a specific UCI with a high priority among multiple second-priority UCIs, degradation of communication quality can be suppressed.

[0149] (Third Method)

[0150] The third embodiment describes an example of UL transmission control in a case where multiple UL channels of a first priority (e.g., high) overlap with UL channels of a second priority (e.g., low), and at least one of the multiple UL channels of the first priority overlaps with another UL channel of the second priority (e.g., scenario 3). This assumes that the multiple UL channels of the first priority do not overlap with each other in the time domain, and the multiple UL channels of the second priority do not overlap with each other in the time domain.

[0151] In the following description, it is assumed that a plurality of UL channels HP#1 and HP#2 corresponding to a first priority (e.g., high) overlap with a UL channel LP#3 corresponding to a second priority (e.g., low) (see Figure 5C ). Furthermore, it is assumed that UL channel HP#2 corresponding to a first priority (e.g., high) overlaps with another UL channel LP#4 corresponding to a second priority (e.g., low). It is assumed that multiple UL channels HP#1 and HP#2 of the first priority do not overlap in the time domain. Furthermore, it is assumed that multiple UL channels LP#3 and LP#4 of the second priority do not overlap in the time domain. Figure 5C It can also show conflict resolution in the case of overlap of the same priority (e.g., Figure 2 The state after step 1).

[0152] If specific conditions are met, the UE may also use at least one of the following options 3-1 to 3-7 to multiplex / map at least one of the multiple second UCIs #3 and #4 corresponding to the second UL channels LP#3 and LP#4, respectively, to at least one of the first UCIs #1 and #2 (or the first UL channels HP#1 and HP#2).

[0153] <Option 3-1>

[0154] The UE may also control the UE to combine the second UCI corresponding to the plurality of second UL channels and map them to a specific UL channel (e.g., one UL channel) among the plurality of first UL channels. The specific UL channel may also be determined based on the transmission timing of the first UL channel. For example, the specific UL channel may be the first UL channel / UCI (e.g., the first PUCCH / first UCI) that is transmitted first in the time domain among the plurality of first UL channels / UCIs.

[0155] The UE may also first synthesize the second UCI #3 corresponding to the second UL channel LP #3 and the second UCI #4 corresponding to the second UL channel LP #4, and then multiplex / map the synthesized second UCI to the first UL channel HP #1 (or the first UCI #1) (refer to Figure 12A ).

[0156] The combination of the plurality of second UCIs can also be controlled in the same manner as in Option 2-1 of the second embodiment. Alternatively, Option 1-1 of the first embodiment and Option 2-1 of the second embodiment may be combined and applied.

[0157] <Option 3-2>

[0158] The specific UL channel to be mapped after synthesizing the second UCI corresponding to the plurality of second UL channels may also be determined based on the size / capacity of the first UL channel or the number of bits / bit size that can be transmitted. For example, the specific UL channel may be the first UL channel / UCI that can transmit more bits (see Figure 12B ).

[0159] The UE may also select a first UL channel / UCI capable of transmitting more bits from the multiple first UL channels, and multiplex / map the synthesized multiple second UCIs in the selected first UL channel / UCI. Figure 12B , second UCI #3 and #4 corresponding to second UL channels LP#3 and LP#4 are mapped to first UL channel HP#2 having a larger size / capacity. Alternatively, control may be performed so that second UL channels LP#3 and #4 are not transmitted (e.g., discarded).

[0160] Even when the second UCI is transmitted using the first UL channel with a large size / capacity, and the resulting multiple second UCIs are transmitted using the first UL channel, they can still be properly transmitted. Furthermore, since the second UCI is not mapped to the first UL channel / first UCI with a small size / capacity, the impact on the transmission of the first UL channel / first UCI with a small size / capacity can be suppressed.

[0161] The combination of the plurality of second UCIs can also be controlled in the same manner as in Option 2-1 of the second embodiment. Alternatively, Option 1-2 of the first embodiment and Option 2-1 of the second embodiment may be combined and applied.

[0162] <Option 3-3>

[0163] Alternatively, control may be performed such that after synthesizing the second UCIs corresponding to the plurality of second UL channels, the synthesized second UCIs are split and multiplexed / mapped to the plurality of first UL channels / UCIs (see Figure 12C ).

[0164] Figure 12C It shows that after the UE synthesizes multiple second UCI#3 and #4, it divides the synthesized second UCI, multiplexes / maps the divided first part (first part) to the first UL channel HP#1 (or first UCI#1), and then multiplexes / maps the second part (second part) to the second UL channel HP#2 (or first UCI#2).

[0165] The combination of multiple second UCIs can be controlled in the same manner as Option 2-1 of the second embodiment. The splitting method of the combined second UCI can be controlled in the same manner as Option 1-3 of the first embodiment. Alternatively, Option 1-3 of the first embodiment and Option 2-1 of the second embodiment can be combined and applied.

[0166] <Options 3-4>

[0167] The UE may also control to map a specific second UCI (e.g., one second UCI) among the second UCIs corresponding to the plurality of second UL channels to a specific UL channel (e.g., one UL channel) among the plurality of first UL channels. In this case, the UE may also control not to transmit (e.g., discard) second UCIs other than the specific second UCI.

[0168] The specific second UCI (or the second UCI to be discarded) may also be determined based on specific conditions / specific rules. These specific conditions / specific rules may be defined in a specification or set / notified to the UE from the base station via higher-layer signaling. For example, the specific conditions / specific rules may be determined based on the type / content / category of the UCI. In this case, different priorities may be further set for the UCI corresponding to the second priority.

[0169] The specific UL channel may also be determined based on the transmission timing of the first UL channel. For example, the specific UL channel may be the first UL channel / UCI (eg, the first PUCCH / first UCI) transmitted first in the time domain among multiple first UL channels / UCIs.

[0170] The UE first selects one of the second UCI #3 corresponding to the second UL channel LP #3 and the second UCI #4 corresponding to the second UL channel LP #4, and then multiplexes / maps the selected second UCI to the first UL channel HP #1 (or the first UCI #1) (see Figure 13A ).

[0171] For example, the UE may combine Option 1-1 of the first method and Option 2-2 of the second method and apply the combination.

[0172] <Options 3-5>

[0173] The specific UL channel used to map the specific second UCI may also be determined based on the size / capacity of the first UL channel or the number of bits / bit size that can be transmitted. For example, the specific UL channel may be the first UL channel / first UCI that can transmit more bits (see Figure 13B ).

[0174] The UE may also select a first UL channel / UCI capable of transmitting more bits from a plurality of first UL channels, and multiplex / map a specific second UCI in the selected first UL channel / UCI. Figure 13B FIG. 4 shows a case where the second UCI # 3 corresponding to the second UL channel LP # 3 is mapped to the first UL channel HP # 2 having a large size / capacity.

[0175] For example, the UE may combine Option 1-2 of the first method and Option 2-2 of the second method and apply the combination.

[0176] Even when the second UCI is transmitted using the first UL channel with a large size / capacity, and the resulting multiple second UCIs are transmitted using the first UL channel, they can still be properly transmitted. Furthermore, since the second UCI is not mapped to the first UL channel / first UCI with a small size / capacity, the impact on the transmission of the first UL channel / first UCI with a small size / capacity can be suppressed.

[0177] <Options 3-6>

[0178] Alternatively, control may be performed so that a specific second UCI is split and multiplexed / mapped to a plurality of first UL channels / first UCIs (see Figure 13C ).

[0179] Figure 13C It shows that after the UE selects a second UCI from multiple second UCIs #3 and #4, it splits the selected second UCI, multiplexes / maps the split first part (first part) to the first UL channel HP#1 (or first UCI#1), and then multiplexes / maps the second part (second part) to the second UL channel HP#2 (or first UCI#2).

[0180] The splitting method of the second UCI can be controlled in the same manner as in Option 1-3 of the first embodiment. Alternatively, Option 1-3 of the first embodiment and Option 2-2 of the second embodiment may be combined and applied.

[0181] <Options 3-7>

[0182] Control may also be performed so that the second UCIs corresponding to the plurality of second UL channels are multiplexed / mapped to separate first UL channels.

[0183] For example, the UE may also control so that the second UCI #3 corresponding to the second UL channel #3 is multiplexed / mapped to the first UL channel #1 (or first UCI #1), and the second UCI #4 corresponding to the second UL channel #4 is multiplexed / mapped to the first UL channel #2 (or first UCI #2).

[0184] This allows the plurality of second UCIs to be multiplexed and mapped to the first UL channel to be dispersed, thereby enabling appropriate transmission of the first UL channel.

[0185] (Fourth Method)

[0186] The fourth embodiment describes an example of UL transmission control in the case where a UL channel of second priority (e.g., low) that overlaps with a UL channel of first priority (e.g., high) in the time domain overlaps with other UL channels of the second priority. Furthermore, a case is assumed where the UL channel of first priority does not overlap with other UL channels of second priority in the time domain.

[0187] For example, UE is in situation 4 (refer to Figure 5D ), conflict resolution in the case of conflicts of the same priority (e.g. Figure 2 Before step 1), or when the first UL channels of the first priority conflict with each other, conflict resolution is performed. Subsequently, the UE may control the transmission of UCI#3 corresponding to the second UL channel LP#3 overlapping with the first UL channel and UCI#4 corresponding to the second UL channel LP#4 not overlapping with the first UL channel based on specific rules.

[0188] The UE may also control UL transmission using the following steps A1 to A3. In addition, it is assumed that the second UL channels LP#3 and LP#4 overlap in the time domain.

[0189] Figure 14It shows that the first UL channel HP#0 of the first priority overlaps with HP#1, the second UL channel LP#3 of the second priority overlaps with the first UL channels HP#0 and HP#1, and the second UL channel LP#4 of the second priority overlaps with the second UL channel LP#3 but does not overlap with the first UL channels HP#0 and HP#1.

[0190] Step 1

[0191] When UL channels / UCIs with the first priority overlap with each other, conflict resolution is performed between the UL channels / UCIs with the first priority. Figure 14 In the example, the UE controls to multiplex / map one of the first UL channel HP#0 / UCI#0 and the first UL channel HP#1 / UCI#1 to the other. Here, a case where UCI#0 is multiplexed / mapped to the first UL channel HP#1 / UCI#1 is shown.

[0192] <Step 2>

[0193] The plurality of second UL channels of the second priority may also be grouped. For example, the plurality of second UL channels may also be classified into a first portion (first portion) and a second portion (second portion). The first portion may also be referred to as a first group, a first PUCCH portion, or a first portion, and the second portion may also be referred to as a second group, a second PUCCH portion, or a second portion.

[0194] The grouping may also be performed based on specific rules. For example, the specific rules may also be based on whether there is overlap with the first UL channel in the time domain. As an example, the first UL channel ( Figure 14 One or more second UL channels / UCIs overlapping with the UL channel HP#1 in step 1 are classified as the first part (first part). In addition, the first UL channel ( Figure 14 One or more second UL channels / UCIs that do not overlap with the UL channel HP#1 in the UL channel are classified as the second part (second part).

[0195] Alternatively, when multiple second UL channels classified as the first part overlap in the time domain, conflict resolution may be performed between the multiple second UL channels / UCI. For example, a specific UL channel may be selected from the multiple second UL channels. In this case, control may be performed so that the second-priority UCI included in the first part is multiplexed / mapped to the specific UL channel.

[0196] Alternatively, when multiple second UL channels classified as the second part overlap in the time domain, conflict resolution may be performed between the multiple second UL channels / UCI. For example, a specific UL channel may be selected from the multiple second UL channels. In this case, control may be performed so that the second-priority UCI included in the second part is multiplexed / mapped to the specific UL channel.

[0197] Figure 14 , which shows a case where the second UL channel #3 is included in the first part / first group, and the second UL channel #4 is included in the second part / second group.

[0198] <Step 3>

[0199] After step 2, control can also be performed so that the second UL channel / UCI (e.g., the first group) overlapping with the first UL channel / UCI and at least the first group of UCIs in the second UL channel / UCI (e.g., the second group) that does not overlap with the first UL channel / UCI are multiplexed / mapped to the first UL channel / UCI.

[0200] For example, consider the following situation: after step 2, there is a first UL channel / UCI ( Figure 14 The second UL channel / UCI ( Figure 14 LP#3), and other second UL channels / UCIs overlapping with the second UL channel / UCI ( Figure 14 The second UL channel LP#4).

[0201] After step 1, if the number of first UL channels (e.g., the first UL channel overlapping with the second UL channel LP#3) is 1, the UE may also control the second UL channel / UCI of the first group to be multiplexed / mapped to the first UL channel. In this case, the second UL channel LP#3 may also be discarded.

[0202] After step 1, when the number of first UL channels (for example, the first UL channel overlapping with the second UL channel #3) is greater than 1 or greater than 2, the UE may also control so that the second UL channel #LP3 / UCI of the first group is multiplexed / mapped to multiple first UL channels. In addition, the UE may directly transmit the second UL channel LP#4 / UCI of the second group that does not overlap with the first UL channel, or may control so that multiplexing / mapping is performed on multiple first UL channels (see Figure 15 In this case, at least one of the options 3-1 to 3-7 in the third aspect may be used.

[0203] (UE capability information)

[0204] The UE may also report UE capability information on whether it supports multiplexing / mapping of UCI corresponding to the second-priority UL channel to the first UL channel when the first-priority UL channel and the second-priority UL channel overlap in the time domain.

[0205] In addition, the UE may also report the UE capability information of whether it supports multiplexing / mapping the second-priority UCI to the first-priority UL channel / UCI when one or more (for example, two) second-priority UL channels / UCIs conflict with one or more first-priority UL channels / UCIs.

[0206] The UE may also report UE capability information on whether bundling / discarding of UCI (eg, UCI of the second priority) is supported when multiplexing / mapping UL channels / UCI of different priorities.

[0207] Alternatively, before performing conflict resolution (or conflict resolution) for channels with the same priority, if the second-priority UL channel and the first-priority UL channel do not overlap (e.g., scenario 4), UE capability information may be reported indicating whether it supports the new multiplexing / prioritization methods of the first to fourth methods. If the UE does not support this UE capability, and the multiplexing result of conflict resolution for the second-priority UL channels results in a conflict with the first UL channel, the second-priority UL channel / UCI may be discarded, similar to existing systems.

[0208] The UE may also report whether it supports the UE capability information of conflict resolution (or conflict resolution) rules / actions (e.g., step 2 / step 3 of the fourth method) for multiple parts (e.g., 2 parts) of UL channels / UCI of the same priority. Figure 14 、 Figure 15 The second UL channel LP#3 that overlaps with the first-priority UL channel and the second UL channel LP#4 that does not overlap are each multiplexed / mapped to the first UL channel. If the UE does not support this UE capability information, the second UL channels #3 and #4 may be aggregated into a second UL channel and then multiplexed / mapped to the first UL channel.

[0209] In addition, the UE capability information (e.g., support for a specific operation) may also be notified / set to the UE by the base station using higher layer signaling. The base station may control whether to set a specific operation based on the UE capability information reported by the UE, or may control whether to set a specific operation without considering the UE capability information.

[0210] (Wireless Communication System)

[0211] The following describes the configuration of a wireless communication system according to an embodiment of the present disclosure. In this wireless communication system, communication is performed using one or a combination of the wireless communication methods according to the above-described embodiments of the present disclosure.

[0212] Figure 16 A diagram showing an example of a schematic configuration of a wireless communication system according to one embodiment. The wireless communication system 1 may also be a system that implements communication using Long Term Evolution (LTE) standardized by the Third Generation Partnership Project (3GPP) or the fifth generation mobile communication system New Radio (5G NR).

[0213] In addition, the wireless communication system 1 can also support dual connectivity (Multi-RAT Dual Connectivity (MR-DC)) between multiple radio access technologies (Radio Access Technology (RAT)). MR-DC can also 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 (NR-E-UTRA Dual Connectivity (NE-DC)), etc.

[0214] 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.

[0215] The wireless communication system 1 can also support dual connectivity between multiple base stations within the same RAT (for example, dual connectivity (NR-NR Dual Connectivity (NN-DC)) where both the MN and the SN are NR base stations (gNB)).

[0216] The wireless communication system 1 may also include a base station 11 that forms a macrocell C1 with relatively wide coverage, and base stations 12 (12a-12c) that are located within the macrocell C1 and form small cells C2 that are narrower than the macrocell C1. User terminals 20 may also be located within at least one of the cells. The arrangement and number of cells and user terminals 20 are not limited to those shown. Hereinafter, when not distinguishing between base stations 11 and 12, they are collectively referred to as base stations 10.

[0217] 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 (CCs) and dual connectivity (DC).

[0218] Each CC may also be included in at least one of the first frequency band (Frequency Range 1 (FR1)) and the second frequency band (Frequency Range 2 (FR2)). The macro cell C1 may also be included in FR1, and the small cell C2 may also be included in FR2. For example, FR1 may be a frequency band below 6 GHz (below 6 GHz (sub-6 GHz)), and FR2 may be a frequency band higher than 24 GHz (above 24 GHz (above-24 GHz)). In addition, the frequency bands and definitions of FR1 and FR2 are not limited to these. For example, FR1 may be equivalent to a frequency band higher than FR2.

[0219] Furthermore, the user terminal 20 may perform communication using at least one of time division duplex (TDD) and frequency division duplex (FDD) in each CC.

[0220] Multiple base stations 10 can also be connected by wired (for example, optical fiber compliant with the Common Public Radio Interface (CPRI), X2 interface, etc.) or wireless (for example, NR communication). For example, when NR communication between base stations 11 and 12 is used as a backhaul, the base station 11 equivalent to the upper station can also be called an integrated access backhaul (IAB) host, and the base station 12 equivalent to the relay station (relay) can also be called an IAB node.

[0221] The base station 10 may also be connected to the core network 30 via other base stations 10 or directly. The core network 30 may also include, for example, at least one of an Evolved Packet Core (EPC), a 5G Core Network (5GCN), and a Next Generation Core (NGC).

[0222] The user terminal 20 may also be a terminal that supports at least one of communication methods such as LTE, LTE-A, and 5G.

[0223] In the wireless communication system 1, a radio access scheme based on orthogonal frequency division multiplexing (OFDM) may be used. For example, in at least one of the downlink (DL) and uplink (UL), cyclic prefix OFDM (CP-OFDM), discrete Fourier transform spread OFDM (DFT-s-OFDM), orthogonal frequency division multiple access (OFDMA), or single carrier frequency division multiple access (SC-FDMA) may be used.

[0224] The radio access scheme may also be referred to as a waveform. In addition, in the wireless communication system 1, other radio access schemes (for example, other single-carrier transmission schemes, other multi-carrier transmission schemes) may be used as the radio access schemes for UL and DL.

[0225] As downlink channels, the wireless communication system 1 may use a downlink shared channel (Physical Downlink Shared Channel (PDSCH)) shared by each user terminal 20), a broadcast channel (Physical Broadcast Channel (PBCH)), a downlink control channel (Physical Downlink Control Channel (PDCCH)), etc.

[0226] In addition, as uplink channels, the wireless communication system 1 can also use an uplink shared channel (Physical Uplink Shared Channel (PUSCH)) shared by each user terminal 20), an uplink control channel (Physical Uplink Control Channel (PUCCH)), a random access channel (Physical Random Access Channel (PRACH)), etc.

[0227] User data, higher-layer control information, and system information blocks (SIBs) are transmitted via the PDSCH. User data, higher-layer control information, and the like can also be transmitted via the PUSCH. Furthermore, the Master Information Block (MIB) can also be transmitted via the PBCH.

[0228] The lower layer control information may also be transmitted via the PDCCH. The lower layer control information may also include, for example, downlink control information (Downlink Control Information (DCI)) including scheduling information for at least one of the PDSCH and the PUSCH.

[0229] In addition, the DCI that schedules the PDSCH may also be referred to as DL allocation, DL DCI, etc., and the DCI that schedules the PUSCH may also be referred to as UL grant, UL DCI, etc. In addition, PDSCH may also be replaced by DL data, and PUSCH may also be replaced by UL data.

[0230] PDCCH detection can also utilize a control resource set (CORESET) and a search space. A CORESET corresponds to the resources for searching for DCI. A search space corresponds to the search area and search method for PDCCH candidates. A CORESET can also be associated with one or more search spaces. Based on the search space settings, the UE can also monitor the CORESET associated with a search space.

[0231] A search space may also correspond to PDCCH candidates corresponding to one or more aggregation levels. One or more search spaces may also be referred to as a search space set. Furthermore, the terms "search space," "search space set," "search space setting," "search space set setting," "CORESET," and "CORESET setting" in this disclosure may be used interchangeably.

[0232] Uplink control information (uplink control information (UCI)) including at least one of channel state information (CSI), delivery confirmation information (e.g., also known as hybrid automatic repeat request confirmation (HARQ-ACK), ACK / NACK, etc.), and scheduling request (SR) can also be transmitted via the PUCCH. The random access preamble used to establish a connection with a cell can also be transmitted via the PRACH.

[0233] In the present disclosure, downlink, uplink, etc. may be expressed without adding "link." Furthermore, various channels may be expressed without adding "Physical" at the beginning.

[0234] In the wireless communication system 1, a synchronization signal (Synchronization Signal (SS)), a downlink reference signal (Downlink Reference Signal (DL-RS)), etc. may also be transmitted. In the wireless communication system 1, as DL-RS, a cell-specific reference signal (Cell-specific Reference Signal (CRS)), a channel state information reference signal (Channel State Information Reference Signal (CSI-RS)), a demodulation reference signal (DeModulation Reference Signal (DMRS)), a positioning reference signal (Positioning Reference Signal (PRS)), a phase tracking reference signal (Phase Tracking Reference Signal (PTRS)), etc. may also be transmitted.

[0235] A 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 also be referred to as an SS / PBCH block, SS Block (SSB), etc. Furthermore, SS and SSB may also be referred to as reference signals.

[0236] In addition, in the wireless communication system 1, a sounding reference signal (SRS), a demodulation reference signal (DMRS), etc. may also be transmitted as an uplink reference signal (UL-RS). In addition, DMRS may also be called a user terminal specific reference signal (UE-specific Reference Signal).

[0237] (Base Station)

[0238] Figure 17 This figure shows an example of the configuration of a base station according to one embodiment. The base station 10 includes a control unit 110, a transmitting / receiving unit 120, a transmitting / receiving antenna 130, and a transmission line interface 140. Furthermore, more than one of each of the control unit 110, the transmitting / receiving unit 120, the transmitting / receiving antenna 130, and the transmission line interface 140 may be provided.

[0239] In this example, the functional blocks of the characteristic parts of this embodiment are mainly shown, but it is also assumed that the base station 10 also has other functional blocks required for wireless communication. Part of the processing of each unit described below may also be omitted.

[0240] The control unit 110 controls the entire base station 10. The control unit 110 can be composed of a controller, a control circuit, and the like that are described based on common knowledge in the technical field to which this disclosure relates.

[0241] The control unit 110 may also control signal generation, scheduling (e.g., resource allocation, mapping), etc. The control unit 110 may also control transmission, reception, measurement, etc. using the transmitting and receiving unit 120, the transmitting and receiving antennas 130, and the transmission path interface 140. The control unit 110 may also generate data, control information, sequences, etc. to be transmitted as signals and forward them to the transmitting and receiving unit 120. The control unit 110 may also perform call processing (setting up, releasing, etc.) of communication channels, manage the status of the base station 10, manage radio resources, etc.

[0242] The transceiver unit 120 may also include a baseband unit 121, a radio frequency (RF) unit 122, and a measurement unit 123. The baseband unit 121 may also include a transmission processing unit 1211 and a reception processing unit 1212. The transceiver unit 120 may include a transmitter / receiver, an RF circuit, a baseband circuit, a filter, a phase shifter, a measurement circuit, a transceiver circuit, and the like, which are described based on common knowledge in the technical fields involved in this disclosure.

[0243] The transmitting and receiving unit 120 may be configured as an integrated transmitting and receiving unit or may be configured as a transmitting unit and a receiving unit. The transmitting unit may also be configured as a transmitting processing unit 1211 and an RF unit 122. The receiving unit may also be configured as a receiving processing unit 1212, an RF unit 122, and a measuring unit 123.

[0244] The transmitting and receiving antenna 130 can be formed of an antenna described based on common knowledge in the technical field to which this disclosure relates, such as an array antenna.

[0245] The transmitting and receiving unit 120 may also transmit the aforementioned downlink channel, synchronization signal, downlink reference signal, etc. The transmitting and receiving unit 120 may also receive the aforementioned uplink channel, uplink reference signal, etc.

[0246] The transmitting and receiving unit 120 may also form at least one of a transmitting beam and a receiving beam using digital beamforming (eg, precoding), analog beamforming (eg, phase rotation), or the like.

[0247] The sending and receiving unit 120 (sending processing unit 1211) can also perform processing on the data and control information obtained from the control unit 110, such as the Packet Data Convergence Protocol (PDCP) layer, the Radio Link Control (RLC) layer (for example, RLC retransmission control), and the Medium Access Control (MAC) layer (for example, HARQ retransmission control), to generate a bit string to be sent.

[0248] The transmitting and receiving unit 120 (transmitting processing unit 1211) can also perform channel coding (which may also include error correction coding), modulation, mapping, filter processing, discrete Fourier transform (DFT) processing (as needed), inverse fast Fourier transform (IFFT) processing), precoding, digital-to-analog conversion and other transmission processing on the bit string to be sent, and output a baseband signal.

[0249] The transmitting and receiving unit 120 (RF unit 122 ) may also perform modulation, filter processing, amplification, etc. on the baseband signal to a radio frequency band, and transmit the signal in the radio frequency band via the transmitting and receiving antenna 130 .

[0250] On the other hand, the transmitting and receiving unit 120 (RF unit 122 ) may also perform amplification, filter processing, and demodulation into a baseband signal on the radio frequency band signal received by the transmitting and receiving antenna 130 .

[0251] The transmitting and receiving unit 120 (receiving processing unit 1212) can also apply analog-to-digital conversion, fast Fourier transform (FFT) processing, inverse discrete Fourier transform (IDFT)) processing (as needed), filter processing, demapping, demodulation, decoding (which may also include error correction decoding), MAC layer processing, RLC layer processing, and PDCP layer processing to the obtained baseband signal to obtain user data, etc.

[0252] The transmitting and receiving unit 120 (measuring unit 123) may also perform measurements related to the received signal. For example, the measuring unit 123 may also perform radio resource management (RRM) measurements, channel state information (CSI) measurements, etc. based on the received signal. The measuring unit 123 may also measure received power (e.g., Reference Signal Received Power (RSRP)), received quality (e.g., Reference Signal Received Quality (RSRQ)), signal to interference plus noise ratio (SINR), signal to noise ratio (SNR)), signal strength (e.g., received signal strength indicator (RSSI)), propagation path information (e.g., CSI), etc. The measurement results may also be output to the control unit 110.

[0253] The transmission path interface 140 may also transmit and receive signals (backhaul signaling) between devices included in the core network 30 and other base stations 10 , and acquire and transmit user data (user plane data) and control plane data for the user terminal 20 .

[0254] In addition, the transmitting unit and the receiving unit of the base station 10 in the present disclosure may also be composed of at least one of the transmitting and receiving unit 120 , the transmitting and receiving antenna 130 , and the transmission path interface 140 .

[0255] Alternatively, when a plurality of first uplink channels that do not overlap in the time domain overlap with a second uplink channel, the transmitting and receiving unit 120 receives the first uplink channel to which the uplink control information corresponding to the second uplink channel is mapped.

[0256] Alternatively, when the first uplink channel overlaps with multiple second uplink channels that do not overlap in the time domain, the transmitting and receiving unit 120 receives at least one mapped first uplink channel of uplink control information corresponding to each of the multiple second uplink channels.

[0257] The control unit 110 may also control allocation of the first uplink channel and a second uplink channel having a lower priority than the first uplink channel.

[0258] (User Terminal)

[0259] Figure 18 This figure 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. Furthermore, the control unit 210, the transmitting / receiving unit 220, and the transmitting / receiving antenna 230 may each be provided in one or more units.

[0260] In addition, in this example, the functional blocks of the characteristic parts of this embodiment are mainly shown, and the user terminal 20 may also be assumed to have other functional blocks required for wireless communication. Part of the processing of each unit described below may also be omitted.

[0261] The control unit 210 controls the entire user terminal 20. The control unit 210 can be composed of a controller, a control circuit, and the like that are described based on common knowledge in the technical field to which this disclosure relates.

[0262] The control unit 210 may also control signal generation, mapping, etc. The control unit 210 may also control transmission, reception, measurement, etc. using the transmitting and receiving unit 220 and the transmitting and receiving antenna 230. The control unit 210 may also generate data, control information, sequences, etc. to be transmitted as signals and forward them to the transmitting and receiving unit 220.

[0263] The transceiver unit 220 may also include a baseband unit 221, an RF unit 222, and a measurement unit 223. The baseband unit 221 may also include a transmission processing unit 2211 and a reception processing unit 2212. The transceiver unit 220 may include a transmitter / receiver, an RF circuit, a baseband circuit, a filter, a phase shifter, a measurement circuit, a transceiver circuit, and the like, which are described based on common knowledge in the technical fields involved in this disclosure.

[0264] The transmitting and receiving unit 220 may be configured as an integrated transmitting and receiving unit or may be composed of a transmitting unit and a receiving unit. The transmitting unit may also be composed of a transmitting processing unit 2211 and an RF unit 222. The receiving unit may also be composed of a receiving processing unit 2212, an RF unit 222, and a measuring unit 223.

[0265] The transmitting and receiving antenna 230 can be formed of an antenna described based on common knowledge in the technical field involved in the present disclosure, such as a matrix antenna.

[0266] The transmitting and receiving unit 220 may also receive the aforementioned downlink channel, synchronization signal, downlink reference signal, etc. The transmitting and receiving unit 220 may also transmit the aforementioned uplink channel, uplink reference signal, etc.

[0267] The transmitting and receiving unit 220 may also use digital beamforming (eg, precoding), analog beamforming (eg, phase rotation), etc. to form at least one of a transmitting beam and a receiving beam.

[0268] The sending and receiving unit 220 (sending processing unit 2211) can also perform PDCP layer processing, RLC layer processing (for example, RLC retransmission control), MAC layer processing (for example, HARQ retransmission control), etc. on the data and control information obtained from the control unit 210 to generate a bit string to be sent.

[0269] The transmitting and receiving unit 220 (transmitting processing unit 2211) can also perform channel coding (which may also include error correction coding), modulation, mapping, filter processing, DFT processing (as needed), IFFT processing, precoding, digital-to-analog conversion and other transmission processing on the bit string to be sent, and output a baseband signal.

[0270] In addition, whether or not to apply DFT processing may also be based on the transform precoding setting. When transform precoding is enabled for a certain channel (e.g., PUSCH), the transmitting / receiving unit 220 (transmitting processing unit 2211) may perform DFT processing as the above-mentioned transmission processing in order to transmit the channel using a DFT-s-OFDM waveform. Otherwise, DFT processing is not performed as the above-mentioned transmission processing.

[0271] The transmitting and receiving unit 220 (RF unit 222 ) may also perform modulation, filter processing, amplification, etc. on the baseband signal to a radio frequency band, and transmit the signal in the radio frequency band via the transmitting and receiving antenna 230 .

[0272] On the other hand, the transmitting and receiving unit 220 (RF unit 222 ) may also perform amplification, filter processing, and demodulation into a baseband signal on the radio frequency band signal received by the transmitting and receiving antenna 230 .

[0273] The transmitting and receiving unit 220 (receiving processing unit 2212) may also apply receiving processing such as analog-to-digital conversion, FFT processing, IDFT processing (as needed), filter processing, demapping, demodulation, decoding (which may also include error correction decoding), MAC layer processing, RLC layer processing, and PDCP layer processing to the obtained baseband signal to obtain user data, etc.

[0274] The transmitting and receiving unit 220 (measuring unit 223) may also perform measurements related to received signals. For example, the measuring unit 223 may also perform RRM measurements, CSI measurements, etc. based on the received signals. 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 also be output to the control unit 210.

[0275] In addition, the transmitting unit and the receiving unit of the user terminal 20 in the present disclosure may also be composed of at least one of the transmitting and receiving unit 220 and the transmitting and receiving antenna 230 .

[0276] Alternatively, the transmitting and receiving unit 220 uses the first uplink channel to send the uplink control information.

[0277] Alternatively, when multiple first uplink channels that do not overlap in the time domain overlap with a second uplink channel having a lower priority than the first uplink channel, the control unit 210 controls so that the uplink control information corresponding to the second uplink channel is mapped to at least one of the multiple first uplink channels. Alternatively, the control unit 210 determines the first uplink channel to be used in transmitting the uplink control information based on at least one of the transmission timing and size of each of the multiple first uplink channels. Alternatively, the control unit 210 divides the uplink control information and maps it to the multiple first uplink channels. Alternatively, when the second uplink channel overlaps with other second uplink channels that do not overlap with the multiple first uplink channels, the control unit 210 controls so that the uplink control information corresponding to the other second uplink channels is transmitted using the other second uplink channels or the multiple first uplink channels.

[0278] Alternatively, when the first uplink channel overlaps with multiple second uplink channels that have a lower priority than the first uplink channel and do not overlap in the time domain, the control unit 210 controls so that at least one of the uplink control information corresponding to the multiple second uplink channels is mapped to the first uplink channel. Alternatively, the control unit 210 combines the uplink control information corresponding to the multiple second uplink channels and then maps the combined uplink control information to the first uplink channel. Alternatively, the control unit 210 determines the uplink control information to be mapped to the first uplink channel based on at least one of the type and priority of the uplink control information corresponding to the multiple second uplink channels. Alternatively, when one of the multiple second uplink channels overlaps with another second uplink channel that does not overlap with the first uplink channel, the control unit 210 controls so that the uplink control information corresponding to the other second uplink channels is transmitted using the other second uplink channels or the first uplink channel.

[0279] (Hardware Structure)

[0280] In addition, the block diagrams used for the description of the above-mentioned embodiments represent blocks of functional units. These functional blocks (structural units) are implemented by any combination of at least one of hardware and software. In addition, the implementation method of each functional block is not particularly limited. That is, each functional block can be implemented using a physically or logically combined device, or two or more physically or logically separated devices can be directly or indirectly (for example, using wired, wireless, etc.) connected and implemented using these multiple devices. The functional block can also be implemented by combining software for the above-mentioned one device or the above-mentioned multiple devices.

[0281] Here, the term "function" includes, but is not limited to, judging, determining, calculating, calculating, processing, deriving, investigating, searching, confirming, receiving, sending, outputting, accessing, resolving, selecting, choosing, establishing, comparing, assuming, expecting, considering, broadcasting, notifying, communicating, forwarding, configuring, reconfiguring, allocating, mapping, and assigning. For example, a functional block (structural unit) that performs a transmitting function may also be referred to as a transmitting unit, a transmitter, or the like. As described above, the implementation method is not particularly limited.

[0282] For example, a base station, a user terminal, etc. in one embodiment of the present disclosure may also function as a computer that performs processing of the wireless communication method of the present disclosure. Figure 19 This figure shows an example of the hardware configuration of a base station and a user terminal according to one embodiment. The base station 10 and user terminal 20 described above may also be physically configured as a computer device including a processor 1001, a memory 1002, a storage 1003, a communication device 1004, an input device 1005, an output device 1006, a bus 1007, and the like.

[0283] In addition, in this disclosure, the terms "apparatus," "circuit," "device," "section," and "unit" are interchangeable. The hardware structure of the base station 10 and the user terminal 20 may include one or more of the illustrated apparatuses, or may exclude some of the apparatuses.

[0284] For example, only one processor 1001 is shown, but multiple processors may be provided. Furthermore, a process may be performed by a single processor, or by two or more processors simultaneously, sequentially, or using other methods. Furthermore, the processor 1001 may be implemented using one or more chips.

[0285] The various functions in the base station 10 and the user terminal 20 are realized, for example, by reading specific software (program) into hardware such as the processor 1001 and the memory 1002, so that the processor 1001 performs calculations, controls the communication via the communication device 1004, or controls at least one of the reading and writing of data in the memory 1002 and the storage 1003.

[0286] The processor 1001 controls the entire computer by, for example, operating an operating system. The processor 1001 may also be configured as a central processing unit (CPU) including interfaces with peripheral devices, a control device, a computing device, registers, and the like. For example, at least a portion of the aforementioned control unit 110 (210) and the transceiver unit 120 (220) may also be implemented by the processor 1001.

[0287] In addition, the processor 1001 reads a program (program code), a software module, data, etc. from at least one of the storage 1003 and the communication device 1004 into the memory 1002 and performs various processes according to the program. As a program, a program that causes the computer to execute at least a part of the operations described in the above embodiments is used. For example, the control unit 110 (210) can also be implemented by a control program stored in the memory 1002 and operated by the processor 1001, and the same can be achieved for other functional blocks.

[0288] The memory 1002 is a computer-readable recording medium and may be composed of, for example, at least one of a read-only memory (ROM), an erasable programmable ROM (EPROM), an electrically EPROM (EEPROM), a random access memory (RAM), or other appropriate storage media. The memory 1002 may also be referred to as a register, a cache, a main memory (main storage device), etc. The memory 1002 can store executable programs (program code), software modules, etc. for implementing the wireless communication method according to an embodiment of the present disclosure.

[0289] Storage 1003 is a computer-readable recording medium and may be composed of, for example, at least one of a flexible disk, a floppy disk, an optical disk (e.g., a compact disk (Compact Disc ROM (CD-ROM)), a digital versatile disk, a Blu-ray disk), a removable disk, a hard disk drive, a smart card, a flash memory device (e.g., a card, a stick, a key drive), a magnetic stripe, a database, a server, and other appropriate storage media. Storage 1003 may also be referred to as an auxiliary storage device.

[0290] The communication device 1004 is hardware (a transmitting and 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, a network controller, a network card, a communication module, etc. To implement at least one of frequency division duplex (FDD) and time division duplex (TDD), the communication device 1004 may include, for example, a high-frequency switch, a duplexer, a filter, a frequency synthesizer, etc. For example, the aforementioned transmitting and receiving unit 120 (220), the transmitting and receiving antenna 130 (230), etc. may also be implemented by the communication device 1004. The transmitting and receiving unit 120 (220) may also implement physical or logical separation of the transmitting unit 120a (220a) and the receiving unit 120b (220b).

[0291] The input device 1005 is an input device that receives input from the outside (e.g., a keyboard, mouse, microphone, switch, button, sensor, etc.). The output device 1006 is an output device that outputs to the outside (e.g., a display, speaker, light emitting diode (LED) lamp, etc.). Alternatively, the input device 1005 and the output device 1006 may be integrated (e.g., a touch panel).

[0292] Furthermore, the processor 1001, memory 1002, and other devices are connected via a bus 1007 for communicating information. The bus 1007 may be configured using a single bus or different buses between the devices.

[0293] Furthermore, the base station 10 and the user terminal 20 may also be configured to include hardware such as a microprocessor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a programmable logic device (PLD), or a field programmable gate array (FPGA), and may use such hardware to implement part or all of each functional block. For example, the processor 1001 may also be implemented using at least one of these hardware components.

[0294] (Variation)

[0295] In addition, the terms described in this disclosure and the terms required for understanding this disclosure may also be replaced with terms having the same or similar meanings. For example, channel, code element, and signal (signal or signaling) may also be replaced with each other. In addition, a signal may also be a message. A reference signal (RS) may also be referred to as a reference signal, or may be referred to as a pilot signal, a pilot signal, etc. depending on the applied standard. In addition, a component carrier (CC) may also be referred to as a cell, a frequency carrier, a carrier frequency, etc.

[0296] A radio frame can also be composed of one or more periods (frames) in the time domain. Each period (frame) of the one or more periods (frames) that constitute a radio frame can also be called a subframe. Furthermore, a subframe can also be composed of one or more time slots in the time domain. A subframe can also be a fixed time length (for example, 1ms) that is independent of the parameter set (numerology).

[0297] Here, a parameter set (numerology) may also be a communication parameter applied to at least one of the transmission and reception of a certain signal or channel. For example, a parameter set (numerology) may also represent at least one of subcarrier spacing (SCS), bandwidth, symbol length, cyclic prefix length, transmission time interval (TTI), number of symbols per TTI, radio frame structure, specific filtering processing performed by the transmitter and receiver in the frequency domain, specific windowing processing performed by the transmitter and receiver in the time domain, etc.

[0298] A time slot may also be composed of one or more symbols (Orthogonal Frequency Division Multiplexing (OFDM) symbols, Single Carrier Frequency Division Multiple Access (SC-FDMA) symbols, etc.) in the time domain. In addition, a time slot may also be a time unit based on a parameter set.

[0299] A time slot may also contain multiple mini-slots. Each mini-slot may also be composed of one or more symbols in the time domain. Furthermore, a mini-slot may also be referred to as a sub-slot. A mini-slot may also be composed of fewer symbols than a time slot. A PDSCH (or PUSCH) transmitted in a time unit larger than a mini-slot may also be referred to as PDSCH (PUSCH) mapping type A. A PDSCH (or PUSCH) transmitted using a mini-slot may also be referred to as PDSCH (PUSCH) mapping type B.

[0300] Radio frames, subframes, time slots, mini-slots, and symbols all represent time units used for signal transmission. Radio frames, subframes, time slots, mini-slots, and symbols may also be referred to by their respective names. Furthermore, the terms frame, subframe, time slot, mini-slot, and symbol may be used interchangeably in this disclosure.

[0301] For example, a subframe can also be called a TTI, multiple consecutive subframes can also be called a TTI, and a time slot or a mini-time slot can also be called a TTI. In other words, at least one of a subframe and a TTI can be a subframe (1ms) in existing LTE, a period shorter than 1ms (for example, 1-13 symbols), or a period longer than 1ms. In addition, the unit representing a TTI can also be called a time slot, a mini-time slot, etc. instead of a subframe.

[0302] Here, TTI refers to, for example, the minimum time unit for scheduling in wireless communications. For example, in the LTE system, a base station schedules each user terminal by allocating radio resources (such as the available frequency bandwidth and transmit power) in TTI units. The definition of TTI is not limited to this.

[0303] The TTI can be a unit of time for transmitting data packets (transport blocks), code blocks, code words, etc. after channel coding, and can also be a unit of processing for scheduling, link adaptation, etc. Furthermore, when a TTI is given, the time interval (e.g., the number of symbols) to which the transport blocks, code blocks, code words, etc. are actually mapped may be shorter than the TTI.

[0304] Furthermore, while one time slot or one mini-slot is referred to as a TTI, one or more TTIs (i.e., one or more time slots or one or more mini-slots) can also be the minimum time unit for scheduling. Furthermore, the number of time slots (mini-slots) that constitute this minimum time unit for scheduling can also be controlled.

[0305] A TTI having a time length of 1 ms may also be referred to as a normal TTI (TTI in 3GPP Rel. 8-12), a standard TTI, a long TTI, a normal subframe, a standard subframe, a long subframe, a time slot, etc. A TTI shorter than a normal TTI may also be referred to as a shortened TTI, a short TTI, a partial TTI (partial or fractional TTI), a shortened subframe, a short subframe, a mini-slot, a subslot, a time slot, etc.

[0306] In addition, long TTI (for example, normal TTI, subframe, etc.) can also be replaced by TTI with a time length exceeding 1ms, and short TTI (for example, shortened TTI, etc.) can also be replaced by TTI with a TTI length smaller than long TTI and longer than 1ms.

[0307] A resource block (RB) is a unit of resource allocation in the time and frequency domains. In the frequency domain, it may include one or more consecutive subcarriers (subcarriers). The number of subcarriers included in an RB may be the same regardless of the numerology, for example, 12. The number of subcarriers included in an RB may also be determined based on the numerology.

[0308] Furthermore, in the time domain, an RB may also include one or more symbols, and may be the length of one slot, one mini-slot, one subframe, or one TTI. A TTI, a subframe, etc. may also be composed of one or more resource blocks.

[0309] In addition, one or more RBs may also be referred to as a physical resource block (Physical RB (PRB)), a sub-carrier group (Sub-Carrier Group (SCG)), a resource element group (Resource Element Group (REG)), a PRB pair, an RB pair, etc.

[0310] Furthermore, a resource block may be composed of one or more resource elements (REs). For example, one RE may be a radio resource region of one subcarrier and one symbol.

[0311] A Bandwidth Part (BWP) (also referred to as a fractional bandwidth) can also represent a subset of contiguous common resource blocks (RBs) used for a numerology within a carrier. Common RBs can also be identified by their index relative to the common reference point of the carrier. PRBs can also be defined within a BWP and assigned a sequence number within that BWP.

[0312] The BWP may include a UL BWP (BWP for UL) and a DL BWP (BWP for DL). For a UE, one or more BWPs may be configured within one carrier.

[0313] At least one of the configured BWPs may be activated, and the UE may not assume that it will transmit or receive specific signals / channels outside of the activated BWP. In addition, "cell", "carrier", etc. in this disclosure may also be replaced with "BWP".

[0314] The structures of radio frames, subframes, slots, mini-slots, and symbols described above are merely examples. For example, various modifications may be made to the number of subframes in a radio frame, the number of slots per subframe or radio frame, the number of mini-slots within a slot, the number of symbols and RBs within a slot or mini-slot, the number of subcarriers within an RB, the number of symbols within a TTI, the symbol length, and the cyclic prefix (CP) length.

[0315] In addition, the information, parameters, etc. described in this disclosure may be expressed using absolute values, relative values ​​relative to a specific value, or other corresponding information. For example, wireless resources may also be indicated by a specific index.

[0316] The names used for parameters, etc. in this disclosure are not intended to be limiting in any way. Furthermore, the formulas and the like using these parameters may differ from those explicitly disclosed in this disclosure. Various channels (PUCCH, PDCCH, etc.) and information elements can be identified by any suitable names, and therefore the names assigned to these channels and information elements are not intended to be limiting in any way.

[0317] Information, signals, and the like described in this disclosure may also be represented using any of a variety of different technologies. For example, data, instructions, commands, information, signals, bits, symbols, chips, and the like referred to throughout the foregoing description may also be represented by voltages, currents, electromagnetic waves, magnetic fields or magnetic particles, light fields or photons, or any combination thereof.

[0318] Furthermore, information, signals, etc. can be output in at least one of the following directions: from a higher layer (upper layer) to a lower layer (lower layer), and from a lower layer to a higher layer. Information, signals, etc. can also be input and output via multiple network nodes.

[0319] Input and output information, signals, etc. can be stored in a specific location (e.g., memory) or managed using a management table. Input and output information, signals, etc. can be overwritten, updated, or appended. Output information, signals, etc. can also be deleted. Input information, signals, etc. can also be sent to other devices.

[0320] The notification of information is not limited to the methods / implementations described in the present disclosure, and other methods may also be used. For example, the notification of information in the present disclosure may also be implemented through physical layer signaling (e.g., downlink control information (downlink control information: Downlink Control Information (DCI)), uplink control information (uplink control information: UplinkControl Information (UCI))), high-layer signaling (e.g., Radio Resource Control (RRC)) signaling, broadcast information (Master Information Block (MIB)), System Information Block (SIB), etc.), Medium Access Control (MAC) signaling), other signals, or a combination thereof.

[0321] In addition, physical layer signaling may also be referred to as Layer 1 / Layer 2 (L1 / L2) control information (L1 / L2 control signal), L1 control information (L1 control signal), etc. In addition, RRC signaling may also be referred to as RRC message, for example, RRC Connection Setup message, RRC Connection Reconfiguration message, etc. In addition, MAC signaling may also be notified using MAC Control Element (CE), for example.

[0322] Furthermore, notification of specific information (eg, notification of “it is X”) is not limited to explicit notification, but may be performed implicitly (eg, by not notifying the specific information or by notifying other information).

[0323] The judgment can be made by a value represented by 1 bit (0 or 1), a true or false value (Boolean value) represented by true (true) or false (false), or by comparing numerical values ​​(for example, comparison with a specific value).

[0324] Whether software is referred to as software, firmware, middleware, microcode, hardware description language, or otherwise, it shall be interpreted broadly to mean instructions, instruction sets, code, code segments, program code, programs, subroutines, software modules, applications, software applications, software packages, routines, subroutines, objects, executables, threads of execution, procedures, functions, or the like.

[0325] In addition, software, instructions, information, etc. may also be transmitted and received via a transmission medium. For example, if the software is transmitted from a website, server, or other remote source using at least one of a wired technology (coaxial cable, fiber optic cable, twisted pair, Digital Subscriber Line (DSL), etc.) and a wireless technology (infrared, microwave, etc.), at least one of these wired technologies and wireless technologies is included in the definition of a transmission medium.

[0326] The terms "system" and "network" used in this disclosure are interchangeable. "Network" may also refer to devices included in the network (eg, base stations).

[0327] In the present disclosure, terms such as "precoding", "precoder", "weight (precoding weight)", "Quasi-Co-Location (QCL)" "Transmission Configuration Indication state (TCI state)", "spatial relation", "spatial domain filter", "transmission 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" can be used interchangeably.

[0328] 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” are used interchangeably. A base station is also sometimes referred to as a macro cell, a small cell, a femto cell, or a pico cell.

[0329] A base station can accommodate one or more (for example, three) cells. When a base station accommodates multiple cells, the overall coverage area of ​​the base station can be divided into multiple smaller areas, each of which can also be provided with communication services by a base station subsystem (for example, a small base station for indoor use (Remote Radio Head (RRH))). Terms such as "cell" or "sector" refer to a portion or the entire coverage area of ​​at least one of the base station and base station subsystem that provide communication services within the coverage area.

[0330] In the present disclosure, terms such as “mobile station (MS)”, “user terminal”, “user device (User Equipment (UE))”, and “terminal” can be used interchangeably.

[0331] A mobile station is also sometimes 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, hand set, user agent, mobile client, client or some other appropriate terminology.

[0332] At least one of the base station and the mobile station may also be referred to as a transmitting device, a receiving device, a wireless communication device, etc. Furthermore, at least one of the base station and the mobile station may also be a device mounted on a mobile object, the mobile object itself, etc. The mobile object may be a vehicle (e.g., a car, an airplane, etc.), a mobile object that moves unmanned (e.g., a drone, an autonomous vehicle, etc.), or a robot (manned or unmanned). Furthermore, at least one of the base station and the mobile station also includes a device that does not necessarily move during communication operations. For example, at least one of the base station and the mobile station may also be an Internet of Things (IoT) device such as a sensor.

[0333] In addition, the base station in the present disclosure can also be replaced by a user terminal. For example, the various methods / implementations of the present disclosure can also be applied to a structure in which the communication between a base station and a user terminal is replaced by communication between multiple user terminals (for example, which can also be called device-to-device (D2D)), vehicle-to-everything (V2X), etc.). In this case, it is also possible to set the structure in which the user terminal 20 has the functions of the above-mentioned base station 10. In addition, the language such as "uplink" and "downlink" can also be replaced by the language corresponding to the communication between terminals (for example, "side"). For example, the uplink channel, downlink channel, etc. can also be replaced by the side channel.

[0334] Likewise, the user terminal in the present disclosure may be replaced by a base station. In this case, the base station 10 may have the functions of the user terminal 20 described above.

[0335] In this disclosure, operations performed by a base station may also be performed by its upper node depending on the situation. In a network including one or more network nodes including a base station, various operations performed for communication with a terminal may obviously be performed by the base station, one or more network nodes other than the base station (for example, but not limited to, a Mobility Management Entity (MME) and a Serving-Gateway (S-GW)), or a combination thereof.

[0336] The various methods / implementations described in this disclosure may be used individually, in combination, or switched as they are executed. Furthermore, the processing procedures, sequences, flow charts, and the like of the various methods / implementations described in this disclosure may be swapped in order, as long as there is no conflict. For example, the methods described in this disclosure use an illustrative order to present various step elements, and are not limited to the specific order presented.

[0337] The various modes and embodiments described in the present disclosure may also be applied to Long Term Evolution (LTE), LTE-Advanced (LTE-A), LTE-Beyond (LTE-B), SUPER 3G, IMT-Advanced, 4th generation mobile communication system (4G), 5th generation mobile communication system (5G), 6th generation mobile communication system (6G), xth generation mobile communication system (xG)) (xG (x is, for example, an integer or a decimal)), Future Radio Access (FRA), New Radio Access Technology (RAT), New Radio (NR), New Radio Access (NX), Future Generation Radio Access (FX), Global System for Mobile Communications (GSM (registered trademark)), CDMA2000, Ultra Mobile Broadband (Ultra Mobile Broadband) MobileBroadband (UMB)), IEEE 802.11 (Wi-Fi (registered trademark)), IEEE 802.16 (WiMAX (registered trademark)), IEEE 802.20, Ultra-WideBand (UWB)), Bluetooth (Bluetooth (registered trademark)), systems using other appropriate wireless communication methods, and next-generation systems based on these systems. In addition, a combination of multiple systems (for example, a combination of LTE or LTE-A with 5G, etc.) may also be applied.

[0338] The phrase “based on” used in this disclosure does not mean “based only on” unless otherwise explicitly stated. In other words, the phrase “based on” means both “based only on” and “based at least on.”

[0339] Any reference to an element using the designations "first," "second," etc., as used in this disclosure, does not necessarily define the quantity or order of these elements. These designations can be used in this disclosure as a convenient way to distinguish between two or more elements. Thus, reference to a first and a second element does not imply that only two elements can be used or that the first element must precede the second element in some form.

[0340] As used in this disclosure, the term "determining" sometimes encompasses a variety of actions. For example, "determining" can also be considered as "judging," calculating, computing, processing, deriving, investigating, searching (e.g., searching a table, database, or other data structure), ascertaining, etc.

[0341] In addition, "judgment (decision)" can also be regarded as a situation of "judgment (decision)" on receiving (for example, receiving information), transmitting (for example, sending information), input (input), output (output), accessing (for example, accessing data in a memory), etc.

[0342] Furthermore, "judgment (decision)" can also be seen as "judgment (decision)" on resolving, selecting, choosing, establishing, comparing, etc. In other words, "judgment (decision)" can also be seen as "judgment (decision)" on certain actions.

[0343] In addition, “judgment (decision)” can also be replaced by “assuming (assuming)”, “expecting (expecting)”, “considering (considering)”, etc.

[0344] The “maximum transmit power” recorded in the present disclosure may refer to the maximum value of the transmit power, the nominal maximum transmit power (the nominal UE maximum transmit power), or the rated maximum transmit power (the rated UE maximum transmit power).

[0345] As used in this disclosure, the terms "connected," "coupled," and any variations thereof mean any direct or indirect connection or coupling between two or more elements, including the presence of one or more intermediate elements between the two "connected" or "coupled" elements. The coupling or connection between elements may be physical, logical, or a combination thereof. For example, "connected" may be replaced by "connected."

[0346] In the present disclosure, when connecting two elements, it is possible to consider using one or more wires, cables, printed electrical connections, etc., and as some non-limiting and non-inclusive examples, using electromagnetic energy with wavelengths in the wireless frequency domain, microwave domain, light (visible light and invisible light) domain, etc., the two elements are "connected" or "combined" with each other.

[0347] In the present disclosure, the term "A is different from B" may also mean "A and B are different from each other." Alternatively, the term may also mean "A and B are each different from C." Terms such as "separate" and "bound" may also be interpreted in the same manner as "different."

[0348] When the terms "include," "including," and variations thereof are used in this disclosure, these terms, like the term "comprising," are inclusive. Furthermore, the term "or" used in this disclosure does not mean exclusive or.

[0349] In the present disclosure, when an article is added by translation, such as a, an, and the in English, the present disclosure may also include the case where the noun following the article is in a plural form.

[0350] While the invention disclosed herein has been described in detail above, it will be apparent to those skilled in the art that the invention disclosed herein is not limited to the embodiments described herein. The invention disclosed 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 description herein is for illustrative purposes only and is not intended to limit the invention disclosed herein in any way.

Claims

1. A terminal comprising: a control unit, when first uplink control information (i.e., first UCI) of a first priority overlaps with a plurality of second UCIs of a second priority lower than the first priority, and the plurality of second UCIs respectively correspond to different types, determining, based on the types of the plurality of second UCIs, at least one of the plurality of second UCIs to be multiplexed on a first uplink control channel (i.e., a first PUCCH) corresponding to the first UCI; and a sending unit, using the first PUCCH, to send at least one of the determined plurality of second UCIs, The plurality of second UCIs are included in a second PUCCH.

2. The terminal according to claim 1, wherein The control unit controls to multiplex second UCIs whose UCI type is hybrid automatic repeat request acknowledgement HARQ-ACK among the multiple second UCIs into the first PUCCH, and to discard second UCIs whose UCI type is channel state information CSI.

3. A wireless communication method for a terminal, comprising: a step of determining, based on the types of the plurality of second UCIs, at least one of the plurality of second UCIs to be multiplexed on a first uplink control channel (i.e., a first PUCCH) corresponding to the first UCI, when first uplink control information of a first priority overlaps with a plurality of second UCIs of a second priority lower than the first priority, and the plurality of second UCIs respectively correspond to different types; and The step of transmitting at least one of the determined plurality of second UCIs by using the first PUCCH, The plurality of second UCIs are included in a second PUCCH.

4. A base station comprising: a control unit, when first uplink control information (i.e., first UCI) of a first priority overlaps with multiple second UCIs of a second priority lower than the first priority, and the multiple second UCIs respectively correspond to different types, determining, based on the types of the multiple second UCIs, at least one of the multiple second UCIs to be multiplexed by the terminal on a first uplink control channel (i.e., a first PUCCH) corresponding to the first UCI; and A receiving unit receives at least one of the determined plurality of second UCIs using the first PUCCH, The plurality of second UCIs are included in a second PUCCH.

5. A system having a terminal and a base station, The terminal has: a control unit, when first uplink control information (i.e., first UCI) of a first priority overlaps with a plurality of second UCIs of a second priority lower than the first priority, and the plurality of second UCIs respectively correspond to different types, determining, based on the types of the plurality of second UCIs, at least one of the plurality of second UCIs to be multiplexed on a first uplink control channel (i.e., a first PUCCH) corresponding to the first UCI; and a sending unit, using the first PUCCH, to send at least one of the determined plurality of second UCIs, The plurality of second UCIs are included in a second PUCCH, The base station has: A receiving unit receives the first PUCCH.

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