JP2022099999A - Base station and user apparatus - Google Patents

Abstract

To enable controlling the transmission timing of non-periodic channel state information in a physical uplink control channel (PUCCH).SOLUTION: A base station includes a transmission processing unit which transmits a radio resource control (RRC) message to a user apparatus. The transmission processing unit transmits downlink control information (DCI), which is used for the scheduling of a physical downlink shared channel (PDSCH) to trigger the transmission of non-periodic channel state information in a physical uplink control channel (PUCCH) to the user apparatus through a physical downlink control channel (PDCCH). The RRC message or the DCI includes timing information which indicates the transmission timing of the non-periodic channel state information in the PUCCH.SELECTED DRAWING: Figure 9

Description

The present disclosure relates to base stations and user equipment.

Mobile communication technology has been proposed in the 3GPP (3rd Generation Partnership Project) and standardized as a technical specification (TS). In particular, at present, 5G (5th Generation) technology has been proposed and standardized.

For example, as described in Non-Patent Document 1, enhancement of IIoT (Industrial Internet of Things) and URLLC (Ultra-Reliable and Low Latency Communication) has been studied. As an example, strengthening channel state information (CSI) feedback to meet the requirements of URLLC is mentioned as an item to be examined. Further, for example, in Non-Patent Document 2, as an enhancement of CSI feedback, a non-periodic channel state in the physical uplink control channel (PUCCH) is provided by downlink control information (DCI). It is described that it triggers the transmission of information (aperiodic channel state information: A-CSI).

3GPP TSG RAN Meeting # 88e, Electronic meeting, June 29 – July 3, 2020, RP-201310, Revision of RP-193233, Nokia, Nokia Shanghai Bell, “Revised WID: Enhanced Industrial Internet of Things (IoT) and ultra-reliable and low latency communication (URLLC) support for NR ” 3GPP TSG-RAN WG1 Meeting # 103-e, Online, October 26th – November 13th 2020, Tdoc R1-2007708, Ericsson, “CSI Feedback Enhancements for IIoT / URLLC”

The inventor has found that there is no mechanism for controlling the timing of A-CSI transmission in PUCCH, and therefore it is not possible to determine when A-CSI is transmitted in PUCCH.

An object of the present disclosure is to provide a base station and user equipment capable of controlling the timing of transmission of A-CSI in PUCCH.

The base station according to one aspect of the present disclosure includes a transmission processing unit that transmits a radio resource control (RRC) message to a user device, and the transmission processing unit is a physical downlink shared channel (PDSCH). The downlink control information (DCI) used for scheduling, which triggers the transmission of aperiodic channel state information in the physical uplink control channel (PUCCH), is the physical downlink control channel. : PDCCH) to transmit to the above user equipment. The RRC message or the DCI contains timing information indicating the timing of the transmission of the aperiodic channel state information in the PUCCH.

The user equipment according to one aspect of the present disclosure includes a reception processing unit that receives a radio resource control (RRC) message, and the reception processing unit is a downlink control used for scheduling a physical downlink shared channel (PDSCH). The DCI, which is information (DCI) and triggers the transmission of aperiodic channel state information on the physical uplink control channel (PUCCH), is received on the physical downlink control channel (PDCCH). The RRC message or the DCI contains timing information indicating the timing of the transmission of the aperiodic channel state information in the PUCCH. The user equipment further includes a transmission processing unit that transmits aperiodic channel state information in the PUCCH based on the timing information according to the DCI.

According to the present disclosure, it becomes possible to control the timing of transmission of A-CSI in PUCCH. It should be noted that, according to the present disclosure, other effects may be produced in place of or in combination with the effect.

It is explanatory drawing which shows an example of the schematic structure of the system which concerns on embodiment of this disclosure. It is a block diagram which shows the example of the schematic functional structure of the base station which concerns on embodiment of this disclosure. It is a block diagram which shows the example of the schematic hardware composition of the base station which concerns on embodiment of this disclosure. It is a block diagram which shows the example of the schematic functional structure of the user equipment which concerns on embodiment of this disclosure. It is a block diagram which shows the example of the schematic hardware structure of the user equipment which concerns on embodiment of this disclosure. It is explanatory drawing for demonstrating the example of the timing information and the candidate timing which concerns on embodiment of this disclosure. It is explanatory drawing for demonstrating the example of DCI and radio resource control (RRC) message which concerns on embodiment of this disclosure. It is explanatory drawing for demonstrating the example of the timing shown by the timing information which concerns on embodiment of this disclosure. It is a sequence diagram for demonstrating the example of the schematic flow of the process which concerns on embodiment of this disclosure. It is explanatory drawing for demonstrating the example of DCI and RRC message which concerns on 1st modification of embodiment of this disclosure. It is explanatory drawing for demonstrating the example of DCI and RRC message which concerns on the 2nd modification of embodiment of this disclosure. It is explanatory drawing for demonstrating the example of DCI and RRC message which concerns on 4th modification of embodiment of this disclosure. It is explanatory drawing for demonstrating the example of DCI and RRC message which concerns on 5th modification of embodiment of this disclosure. It is explanatory drawing for demonstrating the example of DCI and RRC message which concerns on 6th modification of embodiment of this disclosure. It is explanatory drawing for demonstrating the example of DCI and the predetermined candidate timing which concerns on 8th modification of the Embodiment of this disclosure. It is explanatory drawing for demonstrating 1st example of the timing shown by the timing information which concerns on the 10th modification of embodiment of this disclosure. It is explanatory drawing for demonstrating the 2nd example of the timing shown by the timing information which concerns on the 10th modification of the embodiment of this disclosure.

Hereinafter, embodiments of the present disclosure will be described in detail with reference to the accompanying drawings. In the present specification and the drawings, the same reference numerals may be given to elements that can be similarly described, so that duplicate description may be omitted.

The explanations are given in the following order.
1. 1. System configuration 2. Base station configuration 3. User device configuration 4. Operation example 5. Modification example

<1. System configuration>
An example of the configuration of the system 1 according to the embodiment of the present disclosure will be described with reference to FIG. Referring to FIG. 1, the system 1 includes a base station 100 and a user equipment (UE) 200.

For example, the system 1 is a system compliant with the technical specification (TS) of 3GPP (Third Generation Partnership Project). More specifically, for example, the system 1 is a 5G or NR (New Radio) TS compliant system. Of course, system 1 is not limited to this example.

(1) Base station 100
The base station 100 is a node of a radio access network (RAN) and communicates with a UE (for example, UE 200) located in the coverage area 10 of the base station 100.

For example, base station 100 uses the RAN protocol stack to communicate with a UE (eg, UE 200). For example, the protocol stack includes an RRC (Radio Resource Control) layer, a SDAP (Service Data Adaptation Protocol) layer, a PDCP (Packet Data Convergence Protocol) layer, an RLC (Radio Link Control) layer, a MAC (Medium Access Control) layer, and physical. Includes (Physical: PHY) layer. Alternatively, the protocol stack may not include all of these layers, but may include some of these layers.

For example, the base station 100 is a gNB (next Generation NodeB). The gNB is a node that provides the NR user plane and control plane protocol terminations towards the UE and is connected to the 5GC (5G Core Network) via the NG interface. Alternatively, the base station 100 may be an en-gNB.

The base station 100 may include a plurality of nodes. The plurality of nodes may include a first node that hosts a higher layer included in the protocol stack and a second node that hosts a lower layer included in the protocol stack. good. The upper layer may include an RRC layer, a SDAP layer and a PDCP layer, and the lower layer may include an RLC layer, a MAC layer and a PHY layer. The first node may be a CU (central unit), and the second node may be a DU (Distributed Unit). The plurality of nodes may include a third node that performs processing lower than the PHY layer, and the second node may perform processing higher than the PHY layer. The third node may be a RU (Radio Unit).

Alternatively, the base station 100 may be one of the plurality of nodes, or may be connected to another unit of the plurality of nodes.

Base station 100 may be an IAB (Integrated Access and Backhaul) donor or an IAB node.

(2) UE200
The UE 200 communicates with the base station. For example, the UE 200 communicates with the base station 100 when it is located within the coverage area 10 of the base station 100.

For example, the UE 200 communicates with a base station (eg, base station 100) using the protocol stack.

<2. Base station configuration>
An example of the configuration of the base station 100 according to the embodiment of the present disclosure will be described with reference to FIGS. 2 and 3.

(1) Functional Configuration First, an example of the functional configuration of the base station 100 according to the embodiment of the present disclosure will be described with reference to FIG. Referring to FIG. 2, the base station 100 includes a wireless communication unit 110, a network communication unit 120, a storage unit 130, and a processing unit 140.

The wireless communication unit 110 wirelessly transmits and receives signals. For example, the wireless communication unit 110 receives a signal from the UE and transmits a signal to the UE.

The network communication unit 120 receives a signal from the network and transmits the signal to the network.

The storage unit 130 stores various information.

The processing unit 140 provides various functions of the base station 100. The processing unit 140 includes a transmission processing unit 141 and a reception processing unit 143. The processing unit 140 may further include other components other than these components. That is, the processing unit 140 may perform operations other than the operations of these components. The specific operations of the transmission processing unit 141 and the reception processing unit 143 will be described in detail later.

For example, the processing unit 140 (transmission processing unit 141 and reception processing unit 143) communicates with the UE (for example, UE 200) via the wireless communication unit 110. For example, the processing unit 140 communicates with another node (for example, a core network node or another base station) via the network communication unit 120.

(2) Hardware Configuration Next, an example of the hardware configuration of the base station 100 according to the embodiment of the present disclosure will be described with reference to FIG. Referring to FIG. 3, the base station 100 includes an antenna 181, an RF circuit 183, a network interface 185, a processor 187, a memory 189 and a storage 191.

The antenna 181 converts the signal into a radio wave and radiates the radio wave into space. Further, the antenna 181 receives a radio wave in space and converts the radio wave into a signal. The antenna 181 may include a transmitting antenna and a receiving antenna, or may be a single antenna for transmission and reception. The antenna 181 may be a directional antenna or may include a plurality of antenna elements.

The RF circuit 183 performs analog processing of signals transmitted and received via the antenna 181. The RF circuit 183 may include a high frequency filter, an amplifier, a modulator, a low pass filter and the like.

The network interface 185 is, for example, a network adapter, which transmits a signal to and receives a signal from the network.

The processor 187 digitally processes signals transmitted and received via the antenna 181 and the RF circuit 183. The digital processing includes processing of the RAN protocol stack. The processor 187 also processes signals transmitted and received via the network interface 185. The processor 187 may include a plurality of processors or may be a single processor. The plurality of processors may include a baseband processor that performs the digital processing and one or more processors that perform other processing.

The memory 189 stores a program executed by the processor 187, parameters related to the program, and data related to the program. The memory 189 may include at least one of a ROM (Read Only Memory), an EPROM (Erasable Programmable Read Only Memory), an EEPROM (Electrically Erasable Programmable Read Only Memory), a RAM (Random Access Memory), and a flash memory. All or part of the memory 189 may be contained within the processor 187.

The storage 191 stores various information. The storage 191 may include at least one of an SSD (Solid State Drive) and an HDD (Hard Disc Drive).

The wireless communication unit 110 may be mounted by the antenna 181 and the RF circuit 183. The network communication unit 120 may be implemented by the network interface 185. The storage unit 130 may be implemented by the storage 191. The processing unit 140 may be implemented by the processor 187 and the memory 189.

A part or all of the processing unit 140 may be virtualized. In other words, a part or all of the processing unit 140 may be implemented as a virtual machine. In this case, a part or all of the processing unit 140 may operate as a virtual machine on a physical machine (that is, hardware) including a processor, a memory, and the like and a hypervisor.

Considering the above hardware configuration, the base station 100 may include a memory for storing a program (that is, memory 189) and one or more processors (that is, a processor 187) capable of executing the program. The one or more processors may execute the above program to operate the processing unit 140. The above program may be a program for causing the processor to execute the operation of the processing unit 140.

<3. User device configuration>
An example of the configuration of the UE 200 according to the embodiment of the present disclosure will be described with reference to FIGS. 4 and 5.

(1) Functional Configuration First, an example of the functional configuration of the UE 200 according to the embodiment of the present disclosure will be described with reference to FIG. Referring to FIG. 4, the UE 200 includes a wireless communication unit 210, a storage unit 220, and a processing unit 230.

The wireless communication unit 210 wirelessly transmits and receives signals. For example, the wireless communication unit 210 receives a signal from the base station and transmits a signal to the base station. For example, the wireless communication unit 210 receives a signal from another UE and transmits a signal to the other UE.

The storage unit 220 stores various information.

The processing unit 230 provides various functions of the UE 200. The processing unit 230 includes a reception processing unit 231 and a transmission processing unit 233. The processing unit 230 may further include other components other than these components. That is, the processing unit 230 may perform operations other than the operations of these components. The specific operations of the reception processing unit 231 and the transmission processing unit 233 will be described in detail later.

For example, the processing unit 230 (reception processing unit 231 and transmission processing unit 233) communicates with a base station (for example, base station 100) or another UE via the wireless communication unit 210.

(2) Hardware Configuration Next, an example of the hardware configuration of the UE 200 according to the embodiment of the present disclosure will be described with reference to FIG. Referring to FIG. 5, the UE 200 includes an antenna 281, an RF circuit 283, a processor 285, a memory 287 and a storage 289.

The antenna 281 converts the signal into a radio wave and radiates the radio wave into space. Further, the antenna 281 receives a radio wave in space and converts the radio wave into a signal. The antenna 281 may include a transmitting antenna and a receiving antenna, or may be a single antenna for transmission and reception. The antenna 281 may be a directional antenna or may include a plurality of antenna elements.

The RF circuit 283 performs analog processing of signals transmitted and received via the antenna 281. The RF circuit 283 may include a high frequency filter, an amplifier, a modulator, a low pass filter and the like.

The processor 285 digitally processes signals transmitted and received via the antenna 281 and the RF circuit 283. The digital processing includes processing of the RAN protocol stack. The processor 285 may include a plurality of processors or may be a single processor. The plurality of processors may include a baseband processor that performs the digital processing and one or more processors that perform other processing.

The memory 287 stores a program executed by the processor 285, parameters related to the program, and data related to the program. The memory 287 may include at least one of ROM, EPROM, EEPROM, RAM and flash memory. All or part of the memory 287 may be contained within the processor 285.

The storage 289 stores various information. The storage 289 may include at least one of SSD and HDD.

The wireless communication unit 210 may be mounted by the antenna 281 and the RF circuit 283. The storage unit 220 may be implemented by the storage 289. The processing unit 230 may be implemented by the processor 285 and the memory 287.

The processing unit 230 may be implemented by a SoC (System on Chip) including a processor 285 and a memory 287. The SoC may include an RF circuit 283, and the wireless communication unit 210 may also be implemented by the SoC.

Considering the above hardware configuration, the UE 200 may include a memory for storing a program (that is, memory 287) and one or more processors (that is, a processor 285) capable of executing the program. One or more processors may execute the above program to operate the processing unit 230. The above program may be a program for causing the processor to execute the operation of the processing unit 230.

<4. Operation example>
An example of the operation of the base station 100 and the UE 200 according to the embodiment of the present disclosure will be described with reference to FIGS. 6 to 9.

(1) Transmission / reception of RRC message The base station 100 (transmission processing unit 141) transmits a radio resource control (RRC) message to the UE 200. The UE 200 (reception processing unit 231) receives the RRC message.

For example, the above RRC message is an RRC Reconnection message. Alternatively, the RRC message may be an RRClapse message, an RRCSetup message or another message.

(2) Transmission / reception of DCI The base station 100 (transmission processing unit 141) transmits DCI used for scheduling the physical downlink shared channel (PDSCH) to the UE 200 on the physical downlink control channel (PDCCH). The UE 200 (reception processing unit 231) receives the DCI on the PUCCH.

Particularly in the embodiments of the present disclosure, the DCI triggers the transmission of aperiodic channel state information (A-CSI) in the PUCCH.

-DCI format For example, the DCI format is DCI format 1_1, DCI format 1-11, or DCI format 1-22.

-Resource allocation information For example, the above DCI includes resource allocation information of PDSCH. For example, the resource allocation information includes frequency domain resource allocation information and time domain resource allocation information.

-Trigger information For example, the DCI includes trigger information that triggers the transmission of A-CSI in PUCCH. As an example, the trigger information is 1-bit information indicating whether or not to transmit A-CSI in PUCCH. The 1-bit information may be a CSI request. This enables, for example, the transmission of A-CSI in response to the reception of DCI.

-PUCCH resource information For example, the DCI includes PUCCH resource information indicating a PUCCH resource. For example, the PUCCH resource information indicates a PUCCH resource for A-CSI and a PUCCH resource for HARQ-ACK (hybrid automatic repeat request acknowledge). As an example, the PUCCH resource information includes a first PUCCH resource indicator indicating a PUCCH resource for HARQ-ACK and a second PUCCH resource indicator indicating a PUCCH resource for A-CSI.

For example, the RRC message (or other RRC message) contains an information element indicating two or more PUCCH resource candidates. The PUCCH resource information included in the DCI indicates one of the two or more PUCCH resource candidates as the PUCCH resource for A-CSI, and the two PUCCH resources for HARQ-ACK. One of the above PUCCH resource candidates is shown.

(3) Timing Information In particular, in the embodiment of the present disclosure, the RRC message or the DCI includes timing information indicating the timing of the transmission of the A-CSI in the PUCCH. This allows, for example, the network (particularly the base station 100) to control the timing of A-CSI transmission in the PUCCH.

-DCI (timing information) + RRC message (candidate timing)
For example, the DCI contains the timing information. Further, the RRC message indicates two or more candidate timings. In this case, the timing information indicates one of the two or more candidate timings as the timing of the transmission of the A-CSI in the PUCCH.

For example, the timing information has one value among two or more candidate values mapped to each of the two or more candidate timings. As an example, the timing information is 3-bit information, has one of eight candidate values of 0 to 7 (that is, 000 to 111), and the eight candidate values are mapped to eight candidate timings, respectively. Will be done.

Referring to the example of FIG. 6, the timing information 40 included in the DCI 20 indicates one of two or more candidate timings 51 indicated by the RRC message 30. More specifically, for example, two or more candidate values of the timing information 40 are mapped to each of the two or more candidate timings 51. The timing information 40 has one value among the two or more candidate values, and the one value is mapped to one candidate timing 51. Therefore, the timing information 40 indicates the one candidate timing 51 as the timing of transmission of A-CSI in PUCCH.

Thereby, for example, the candidate timing can be flexibly configured by the RRC message, and the timing of the transmission of A-CSI in the PUCCH can be dynamically controlled by the DCI. From another point of view, for example, a small number of bits of DCI can indicate the timing of transmission of A-CSI in PUCCH in a wide range.

The number of bits of the timing information and the number of candidate timings included in the two or more candidate timings may be variable. In this case, the number of bits of the timing information may be configured by the RRC message (or another RRC message). As an example, the number of bits of the timing information may be 0, 1, 2 or 3.

-Timing information For example, the timing information indicates both the timing of the transmission of A-CSI in the PUCCH and the timing of the transmission of HARQ-ACK in the PUCCH. In other words, the timing information is common information between A-CSI and HARQ-ACK.

As an example, the timing information is a PDSCH-to-HARQ feedback timing indicator.

Thereby, for example, it is possible to control the transmission of A-CSI in PUCCH while avoiding an increase in the number of bits of DCI.

-Candidate timing For example, the two or more candidate timings are two or more candidate timings for A-CSI, and the RRC message is the two or more candidate timings for A-CSI and HARQ. -Indicates two or more candidate timings for ACK.

In this case, the timing information indicates one of the two or more candidate timings for the A-CSI as the timing of the transmission of the A-CSI in the PUCCH, and the transmission of the HARQ-ACK in the PUCCH. As the above timing, one of the above two or more candidate timings for HARQ-ACK is shown. That is, the timing information is common information between A-CSI and HARQ-ACK, but indicates the timing of A-CSI transmission in PUCCH and the timing of HARQ-ACK transmission in PUCCH, respectively.

This allows, for example, to indicate different timings for HARQ-ACK and A-CSI while avoiding an increase in the number of bits in DCI.

As an example, the RRC message is a first information element indicating the two or more candidate timings for HARQ-ACK and a second information element indicating the two or more candidate timings for A-CSI. And include. For example, the first information element is DL-DataToUL-ACK in the PUCCH-Config included in the RRC message, and the second information element is DL-DataToACSI in the PUCCH-Config.

Referring to the example of FIG. 7, the RRC message 30 indicates a first information element 31 indicating two or more candidate timings 53 for HARQ and a second or more candidate timings 51 for A-CSI. The information element 33 of 2 is included. The timing information 40 included in the DCI 20 is one of the two or more candidate timings 53 indicated by the first information element 31 and the two or more candidate timings 51 indicated by the second information element 33. Shows one.

More specifically, for example, two or more candidate values of the timing information 40 are mapped to two or more candidate timings 51 for A-CSI, respectively, and two or more candidate values for HARQ-ACK. Each is mapped to the candidate timing 53. The timing information 40 has one of the above two or more candidate values, and the one value is one candidate timing 53 for HARQ-ACK and one candidate timing for A-CSI. It is mapped to 51. Therefore, the timing information 40 indicates the above-mentioned one candidate timing 53 as the timing of the transmission of HARQ-ACK in the PUCCH, and the above-mentioned one candidate timing 51 as the timing of the transmission of the A-CSI in the PUCCH.

Thereby, for example, the candidate timing of HARQ-ACK and the candidate timing of A-CSI can be configured more flexibly.

-Timing --- Period For example, the timing information indicates a period from the timing of receiving the PDSCH to the timing of the transmission of the A-CSI in the PUCCH as the timing of the transmission of the A-CSI in the PUCCH.

Referring to the example of FIG. 8, for example, the UE 200 receives the DCI on the PDCCH at the timing 61. Further, the UE 200 receives data in the PDSCH at the timing 63. Further, the UE 200 transmits A-CSI on the PUCCH at the timing 65. The timing information included in the DCI indicates a period 71 from timing 63 to timing 65 as the timing of transmission of A-CSI in PUCCH.

Thereby, for example, the range of the period indicated by the timing information can be narrowed. As a result, the number of bits can be saved.

In this case, the two or more candidate timings for A-CSI can be said to be a candidate period from the timing of receiving PDSCH to the timing of transmitting A-CSI in PUCCH.

--Slot For example, the timing information indicates the number of slots as the period. Further, each of the two or more candidate timings is also the number of candidate slots. As an example, the number of candidate slots is any one of 0 to 15.

(4) Generation of A-CSI The UE 200 (reception processing unit 231) generates A-CSI according to the DCI.

For example, the UE 200 (reception processing unit 231) may use a channel state information reference signal (CSI-RS) and a synchronization signal / physical broadcast channel (synchronization signal) transmitted by the base station 100 (transmission processing unit 141). / physical broadcast channel: SS / PBCH) Make measurements based on at least one of the blocks and generate A-CSI as a result of the measurements.

For example, the A-CSI includes a channel quality indicator (CQI), a rank indicator (RI), a precoding matrix indicator (PMI), and an SS / PBCH block resource indicator (SS / PBCH block). resource indicator (SSBRI), CSI-RS resource indicator (CSI), layer indicator (LI), and layer 1 reference signal received power (L1-RSRP) Including one or more of them.

(5) Transmission / reception of A-CSI The UE 200 (transmission processing unit 233) transmits A-CSI on the PUCCH based on the timing information according to the DCI. That is, the UE 200 (transmission processing unit 233) transmits A-CSI in the PUCCH at the timing indicated by the timing information according to the DCI.

The base station 100 (reception processing unit 143) receives the A-CSI transmitted on the PUCCH by the UE 200.

This allows, for example, the network (particularly the base station 100) to control the timing of A-CSI transmission in the PUCCH.

(6) Process Flow An example of the process according to the embodiment of the present disclosure will be described with reference to FIG.

The base station 100 transmits an RRC message to the UE 200 (S310). The UE 200 receives the RRC message.

Base station 100 transmits DCI used for scheduling PDSCH to UE 200 in PDCCH (S320). Further, the base station 100 transmits data in the PDSCH (S330). The UE 200 receives the DCI in the PDCCH, and receives the data in the PDSCH based on the DCI.

In particular, the DCI triggers the transmission of A-CSI on the PUCCH. Further, the DCI includes timing information indicating the timing of the transmission of the A-CSI in the PUCCH.

The UE 200 transmits HARQ-ACK in response to the reception of the data in the PDSCH (S340).

The UE 200 generates the A-CSI according to the DCI, and transmits the A-CSI to the base station 100 in the PUCCH based on the timing information (S350). The base station 100 receives the A-CSI in the PUCCH.

In addition, steps S320 to S350 may be repeated.

<< 5. Modification example >>
The first to eleventh modifications of the embodiment of the present disclosure will be described with reference to FIGS. 10 to 17. As long as there is no contradiction, two or more of these modifications may be combined.

(1) First Modification Example: Candidate Timing As described above with reference to the example of FIG. 7, for example, the above RRC message is the first information indicating the above two or more candidate timings for HARQ-ACK. It includes an element and a second information element indicating the two or more candidate timings for A-CSI. However, the embodiments of the present disclosure are not limited to this example.

As a first modification of the embodiments of the present disclosure, the RRC message is between the first information element indicating the two or more candidate timings for HARQ-ACK and between HARQ-ACK and A-CSI. It may include a second information element indicating the timing offset of. The two or more candidate timings for A-CSI may be indicated by the first information element and the second information element. That is, the two or more candidate timings for A-CSI may be indicated by the two or more candidate timings for HARQ-ACK and the timing offset.

Referring to the example of FIG. 10, the RRC message 30 indicates a first information element 31 indicating two or more candidate timings 53 for HARQ and a timing offset 55 between HARQ-ACK and A-CSI. A second information element 35 may be included. The two or more candidate timings 51 for A-CSI described with reference to FIG. 6 may be indicated by the two or more candidate timings 53 and the timing offset 55. For example, the result of adding the timing offset 55 to the candidate timing 53 may be the candidate timing 51. Therefore, the timing information 40 included in the DCI 20 may indicate one candidate timing 53 as the timing of the transmission of HARQ-ACK in the PUCCH, and the one candidate timing 53 as the timing of the transmission of the A-CSI in the PUCCH. And the result of adding the timing offset 55 (= candidate timing 51) may be shown.

The timing offset may be applied only to a part of the two or more candidate timings for HARQ-ACK. As an example, the timing offset may be applied to candidate timings of less than 2 slots or may not be applied to candidate timings of 2 or more slots.

Further, the second information element may indicate at least two timing offsets between HARQ-ACK and A-CSI, and each offset may be applied to different candidate timings. As an example, the first timing offset may be applied to candidate timings that are less than 2 slots, and the second timing offset may be applied to candidate timings that are 2 slots or more and less than 4 slots.

This allows, for example, to reduce the amount of information added to the RRC message.

(2) Second variant example: candidate timing As described above with reference to the example of FIG. 7, for example, the above RRC message is the first information indicating the above two or more candidate timings for HARQ-ACK. It includes an element and a second information element indicating the two or more candidate timings for A-CSI. However, the embodiments of the present disclosure are not limited to this example.

As a second modification of the embodiments of the present disclosure, the RRC message may include an information element indicating two or more combinations of candidate timing for HARQ-ACK and candidate timing for A-CSI. .. The timing information may indicate one of the two or more combinations as the timing of the transmission of HARQ-ACK on the PUCCH and the timing of the transmission of the A-CSI on the PUCCH.

Referring to the example of FIG. 11, the RRC message 30 may include an information element 37 indicating two or more combinations 57 of candidate timing 53 for HARQ and candidate timing 51 for A-CSI. The timing information 40 included in the DCI 20 may indicate one of the two or more combinations 57.

More specifically, for example, two or more candidate values of the timing information 40 may be mapped to each of the two or more combinations 57. The timing information 40 has one value among the two or more candidate values, and the one value may be mapped to one combination 57. Therefore, the timing information 40 may indicate the above-mentioned one combination 57 as the timing of the transmission of HARQ-ACK in the PUCCH and the timing of the transmission of the A-CSI in the PUCCH.

As a result, for example, the relationship between the candidate timing of HARQ-ACK and the candidate timing of A-CSI becomes clearer.

The timing information may be 4 bits or more. Thereby, for example, the timing information can indicate more combinations.

(3) Third Modification Example: Candidate Timing As described above with reference to the example of FIG. 7, for example, the above RRC message is the first information indicating the above two or more candidate timings for HARQ-ACK. It includes an element and a second information element indicating the two or more candidate timings for A-CSI. Here, it is assumed that the first information element and the second information element indicate the same number of candidate timings. However, the embodiments of the present disclosure are not limited to this example.

As a third modification of the embodiment of the present disclosure, the first information element and the second information element may indicate different numbers of candidate timings. In this case, the number of bits of the timing information corresponds to the larger of the number of candidate timings indicated by the first information element and the number of candidate timings indicated by the second information element. You may decide.

For example, the number of candidate timings indicated by the first information element may be 4, and the number of candidate timings indicated by the second information element may be 8. In this case, the number of bits of the timing information may be three.

Thereby, for example, the candidate timing for HARQ-ACK and the candidate timing for A-CSI can be configured more flexibly.

As described above, one of the first information element and the second information element indicates less candidate timing, and the other of the first information element and the second information element indicates less candidate timing. More candidate timings may be shown. In this case, some of all the bits of the timing information may indicate one of the lesser candidate timings than the above, and all the bits of the timing information may indicate one of the more candidate timings than the above. May be shown. As an example, the lower 2 bits of the 3 bits of the timing information may indicate one of the 4 candidate timings indicated by the first information element, and the 3 bits of the timing information may be used. , One of the eight candidate timings indicated by the second information element may be indicated.

(4) Fourth Modification Example: Candidate Timing As described above as an example of the embodiment of the present disclosure, for example, the above RRC message includes the above two or more candidate timings for A-CSI and HARQ-ACK. Two or more candidate timings for. However, the embodiments of the present disclosure are not limited to this example.

As a fourth modification of the embodiments of the present disclosure, the RRC message may indicate two or more candidate timings common to A-CSI and HARQ-ACK. The timing information may indicate one of the two or more candidate timings as a common timing between the transmission of A-CSI in PUCCH and the transmission of HARQ-ACK in PUCCH.

Referring to the example of FIG. 12, the RRC message 30 may include an information element 39 indicating two or more candidate timings 51 common to A-CSI and HARQ. The timing information 40 included in the DCI 20 may indicate one of the two or more candidate timings 51 as a common timing between the transmission of A-CSI in the PUCCH and the transmission of HARQ-ACK in the PUCCH.

Thereby, for example, the timing of transmission of A-CSI in PUCCH can be indicated without adding new information to the DCI and RRC messages.

(5) Fifth Modification Example: Timing Information As described above as an example of the embodiment of the present disclosure, for example, the timing information includes the timing of the transmission of A-CSI in PUCCH and HARQ-ACK in PUCCH. Shows both the timing of transmission. However, the embodiments of the present disclosure are not limited to this example.

As a fifth modification of the embodiment of the present disclosure, the DCI has the timing information indicating the timing of the transmission of A-CSI in the PUCCH and other timing information indicating the timing of the transmission of HARQ-ACK in the PUCCH. And may be included.

The other timing information may be a PDSCH-to-HARQ feedback timing indicator.

Thereby, for example, the timing of transmission of HARQ-ACK in PUCCH and the candidate timing of A-CSI in PUCCH can be shown more flexibly.

Further, the two or more candidate timings indicated by the RRC message may be two or more candidate timings common to A-CSI and HARQ-ACK. In this case, the timing information may indicate one of the two or more candidate timings as the timing of the transmission of the A-CSI in the PUCCH. Further, the other timing information may indicate one of the two or more candidate timings as the timing of the transmission of HARQ-ACK in the PUCCH.

Referring to the example of FIG. 13, the RRC message 30 may include an information element 39 indicating two or more candidate timings 51 common to A-CSI and HARQ. The DCI 20 may include timing information 40 indicating the timing of transmission of A-CSI in the PUCCH and other timing information 45 indicating the timing of transmission of HARQ-ACK in the PUCCH. The timing information 40 included in the DCI 20 may indicate one of the two or more candidate timings 51, and the other timing information 45 may also indicate one of the two or more candidate timings 51. You may.

More specifically, two or more candidate values of the timing information 40 and the other timing information 45 may be mapped to the two or more candidate timings 51, respectively. Each of the timing information 40 and the other timing information 45 may have one value among the two or more candidate values, and the one value may be mapped to one candidate timing 51. Therefore, the timing information 40 may indicate one candidate timing 51 as the timing of transmission of A-CSI in PUCCH, and the other timing information 45 may also indicate one candidate timing of transmission of HARQ-ACK in PUCCH. Timing 51 may be indicated.

Thereby, for example, the timing of transmission of A-CSI in PUCCH can be flexibly indicated without adding new information to the RRC message.

(6) Sixth Modification Example: Timing Information In the fifth modification described above, the two or more candidate timings indicated by the RRC message are two or more common to A-CSI and HARQ-ACK. It may be a candidate timing. However, the embodiments of the present disclosure are not limited to this example.

As a sixth modification of the embodiment of the present disclosure, the two or more candidate timings may be two or more candidate timings for A-CSI. The RRC message may include a first information element indicating two or more candidate timings for HARQ-ACK and a second information element indicating the two or more candidate timings for A-CSI. good. In this case, the timing information may indicate one of the two or more candidate timings for the A-CSI as the timing of the transmission of the A-CSI in the PUCCH. Further, the other timing information may indicate one of the two or more candidate timings for the HARQ-ACK as the timing of the transmission of the HARQ-ACK in the PUCCH.

Referring to the example of FIG. 14, the RRC message 30 indicates a first information element 31 indicating two or more candidate timings 53 for HARQ and a second or more candidate timings 51 for A-CSI. The information element 33 of 2 may be included. The timing information 40 included in the DCI 20 may indicate one of the two or more candidate timings 51 indicated by the second information element 33. The other timing information 45 included in the DCI 20 may indicate one of the two or more candidate timings 53 indicated by the first information element 31.

More specifically, for example, two or more candidate values of the timing information 40 may be mapped to two or more candidate timings 51 for A-CSI, respectively. The timing information 40 has one of the two or more candidate values, and the one value may be mapped to one candidate timing 51 for A-CSI. Therefore, the timing information 40 may indicate the above-mentioned one candidate timing 51 as the timing of transmission of A-CSI in PUCCH.

Similarly, two or more candidate values of the other timing information 45 may be mapped to two or more candidate timings 53 for HARQ-ACK, respectively. The other timing information 45 has one of the two or more candidate values, and the one value may be mapped to one candidate timing 53 for HARQ-ACK. Therefore, the other timing information 45 may indicate the above-mentioned one candidate timing 53 as the timing of transmitting the HARQ-ACK in the PUCCH.

Thereby, for example, the timing of transmission of A-CSI in PUCCH and the timing of transmission of HARQ-ACK in PUCCH can be shown very flexibly.

(7) Seventh Modification: DCI Format As a seventh modification of the embodiment of the present disclosure, the DCI format may be one DCI format among a plurality of DCI formats, and the RRC message may be used. May indicate two or more candidate timings for each of the plurality of DCI formats. The timing information may indicate one of the two or more candidate timings for the one DCI format as the timing of the transmission of the A-CSI in the PUCCH.

For example, the DCI format is DCI format 1-11 or DCI format 1_2, and the RRC message indicates two or more candidate timings for DCI format 1-11 and two or more candidate timings for DCI format 1-42. You may. When the DCI format is DCI format 1-11, the timing information may indicate one of the two or more candidate timings for DCI format 1-1.1. When the DCI format is DCI format 1_2, the timing information may indicate one of the two or more candidate timings for DCI format 1_2.

This makes it possible to switch the timing of A-CSI transmission in the PUCCH, for example, according to the DCI format.

(8) Eighth Modification Example: DCI (Timing Information) Only As described above as an example of the embodiment of the present disclosure, for example, the DCI includes the timing information, and the RRC message is two or more candidates. Indicates the timing. In this case, the timing information indicates one of the two or more candidate timings as the timing of the transmission of the A-CSI in the PUCCH. However, the embodiments of the present disclosure are not limited to this example.

As an eighth modification of the embodiment of the present disclosure, the DCI may include the timing information, and the timing information may be two or more predetermined as the timing of the transmission of the A-CSI in the PUCCH. You may indicate one of the candidate timings of. That is, the two or more candidate timings may be predetermined instead of being indicated by the above RRC message.

With reference to the example of FIG. 15, two or more candidate timings 59 may be predetermined. The timing information 40 included in the DCI 20 may indicate one of the two or more candidate timings 59. More specifically, for example, two or more candidate values of the timing information 40 may be mapped to each of the two or more candidate timings 59. The timing information 40 may have one value among the two or more candidate values, and may indicate one candidate timing 59 to which the one value is mapped. Therefore, the timing information 40 may indicate the one candidate timing 59 as the timing of the transmission of the A-CSI in the PUCCH.

Thereby, for example, the timing of transmission of A-CSI in PUCCH can be indicated without using the RRC message.

The timing information may indicate only the timing of the transmission of the A-CSI in the PUCCH. Alternatively, the timing information may indicate both the timing of the transmission of A-CSI in the PUCCH and the timing of the transmission of HARQ-ACK in the PUCCH.

The eighth modification may be applied when the DCI format is DCI format 1_0. That is, when the DCI format is DCI format 1_0, the timing information included in the DCI may indicate one of two or more predetermined candidate timings.

(9) Ninth Modification Example: Only RRC Message (Timing Information) As described above as an example of the embodiment of the present disclosure, for example, the DCI includes the timing information. However, the embodiments of the present disclosure are not limited to this example.

As a ninth modification of the embodiment of the present disclosure, the DCI may not include the timing information, and the RRC message may include the timing information. In this case, the timing information may indicate one of two or more predetermined candidate timings.

As an example, the timing information may be an information element in PUCCH-Config included in the RRC message. The information element may be DL-DataToACSI, or may indicate one candidate timing. This makes it possible to flexibly indicate, for example, the timing of transmission of A-CSI in PUCCH.

As another example, the timing information may be the minimum value of k2 in the PUSCH-TimeDomainResourceAllocationList contained in the RRC message. Thereby, for example, the time required for the generation of A-CSI can be secured before the transmission of A-CSI. Further, since the existing information is reused, it is possible to indicate the timing of transmission of A-CSI in the PUCCH without adding new information to the RRC message.

The DCI format may be one of a plurality of DCI formats, and the RRC message sets the timing of transmission of A-CSI in the PUCCH for each format included in the plurality of DCI formats. May be shown.

For example, the DCI format may be DCI format 1_1 or DCI format 1_2. The RRC message may indicate the timing of transmission of A-CSI in PUCCH for DCI format 1-11, and the timing of transmission of A-CSI in PUCCH for DCI format 1_1. The UE 200 may select one of the two transmission timings according to the DCI format.

This makes it possible to switch the timing of A-CSI transmission in the PUCCH, for example, according to the DCI format.

(10) Tenth Modification Example: Timing As described above as an example of the embodiment of the present disclosure, for example, the timing information is obtained from the timing of receiving the PDSCH as the timing of the transmission of the A-CSI in the PUCCH. The period until the timing of the transmission of A-CSI in PUCCH is shown. However, the embodiments of the present disclosure are not limited to this example.

--PDCCH
In the tenth modification of the embodiment of the present disclosure, as a first example, the timing information is the timing of the transmission of the A-CSI in the PUCCH, from the timing of the reception of the PDCCH to the timing of the A-CSI in the PUCCH. The period until the timing of the transmission may be shown.

Referring to the example of FIG. 16, for example, the UE 200 receives the DCI on the PDCCH at the timing 61. Further, the UE 200 receives data in the PDSCH at the timing 63. Further, the UE 200 transmits A-CSI on the PUCCH at the timing 65. The timing information included in the DCI (or RRC message) may indicate a period 73 from timing 61 to timing 65 as the timing of transmission of A-CSI in PUCCH.

Thereby, for example, the timing of transmission of A-CSI in PUCCH can be indicated regardless of the presence or absence of data transmission in PDSCH.

In this case, the two or more candidate timings for A-CSI may be a candidate period from the timing of receiving PDCCH to the timing of transmitting A-CSI in PUCCH.

--HARQ-ACK
In the tenth modification of the embodiment of the present disclosure, as a second example, the timing information is the timing of the transmission of the A-CSI in the PUCCH, from the timing of the transmission of HARQ-ACK in the PUCCH to the A in the PUCCH. -The period up to the timing of the transmission of the CSI may be indicated.

Referring to the example of FIG. 17, for example, the UE 200 receives the DCI on the PDCCH at the timing 61. Further, the UE 200 receives data in the PDSCH at the timing 63. Further, the UE 200 transmits HARQ-ACK on the PUCCH at the timing 67, and transmits A-CSI on the PUCCH at the timing 65. The timing information included in the DCI (or RRC message) may indicate a period 75 from timing 67 to timing 65 as the timing of transmission of A-CSI in PUCCH.

Thereby, for example, the range of the period indicated by the timing information can be further narrowed. As a result, the number of bits can be saved.

In this case, the two or more candidate timings for A-CSI may be a candidate period from the timing of HARQ-ACK transmission in PUCCH to the timing of A-CSI transmission in PUCCH.

(11) Eleventh Modification Example: System In the above-mentioned example of the embodiment of the present disclosure, the system 1 is a system compliant with TS of 5G or NR (New Radio). However, the system 1 according to the embodiment of the present disclosure is not limited to this example.

As an eleventh modification of the embodiment of the present disclosure, the system 1 may be a system compliant with another TS of 3GPP. As an example, the system 1 may be an LTE (Long Term Evolution), LTE-A (LTE Advanced) or 4G TS compliant system, and the base station 100 may be an eNB (evolved Node B). good. As another example, the system 1 may be a 3G TS-compliant system, and the base station 100 may be a NodeB. As yet another example, the system 1 may be a next-generation (eg, 6G) TS-compliant system.

Alternatively, the system 1 may be a TS-compliant system of another standards body for mobile communication.

Although the embodiments of the present disclosure have been described above, the present disclosure is not limited to the embodiments. It will be appreciated by those skilled in the art that the embodiments are merely exemplary and that various modifications are possible without departing from the scope and spirit of the present disclosure.

For example, the steps in the processes described herein do not necessarily have to be performed in chronological order in the order described in the flow chart or sequence diagram. For example, the steps in the process may be executed in a different order from the order described in the flowchart or the sequence diagram, or may be executed in parallel. In addition, some of the steps in the process may be deleted, and additional steps may be added to the process.

For example, a method may be provided that includes the operation of one or more components of the apparatus described herein, or a program for causing a computer to perform the operation of the components may be provided. Further, a non-transitional substantive recording medium that can be read by the computer on which the program is recorded may be provided. Of course, such methods, programs, and non-transitory tangible computer-readable storage media are also included in the present disclosure.

For example, in the present disclosure, a user device (UE) is a mobile station, a mobile terminal, a mobile device, a mobile unit, a subscriber station, a subscriber terminal, a subscriber device, a subscriber unit, wireless. It may be referred to by another name such as a station, a wireless terminal, a wireless device, a wireless unit, a remote station, a remote terminal, a remote device, or a remote unit.

For example, in the present disclosure, "transmit" may mean processing at least one layer in the protocol stack used for transmission, or the signal may be physically transmitted wirelessly or by wire. It may mean to send to. Alternatively, "transmitting" may mean a combination of processing the at least one layer and physically transmitting the signal wirelessly or by wire. Similarly, "receive" may mean processing at least one layer in the protocol stack used for reception, or physically receive the signal wirelessly or by wire. It may mean that. Alternatively, "receive" may mean a combination of performing the processing of at least one layer and physically receiving the signal wirelessly or by wire.

For example, in the present disclosure, "obtain / acquire" may mean to acquire information from stored information, and to acquire information from information received from another node. It may mean that the information is acquired, or it may mean that the information is acquired by generating the information.

For example, in the present disclosure, "include" and "comprise" do not mean to include only the items to be listed, and may include only the items to be listed, or the items to be listed. It means that additional items may be included in addition to.

For example, in the present disclosure, "or (or)" does not mean exclusive OR, but means OR.

The technical features included in the above-described embodiment may be expressed as the following features. Of course, the present disclosure is not limited to the following features.

(Feature 1)
Transmission processing unit (141) that transmits a wireless resource control (RRC) message (30) to a user device (200).
Equipped with
The transmission processing unit is the downlink control information (DCI) (20) used for scheduling the physical downlink shared channel (PDSCH), and is the aperiodic channel state information in the physical uplink control channel (PUCCH). The DCI that triggers transmission is transmitted to the user device on the physical downlink control channel (PDCCH).
The RRC message or the DCI comprises timing information (40) indicating the timing of the transmission of the aperiodic channel state information in the PUCCH.
Base station (100).

(Feature 2)
The DCI contains the timing information.
The RRC message indicates two or more candidate timings (51).
The timing information indicates one of the two or more candidate timings as the timing of the transmission of the aperiodic channel state information in the PUCCH.
The base station according to feature 1.

(Feature 3)
The base station according to feature 2, wherein the timing information has one of two or more candidate values mapped to each of the two or more candidate timings.

(Feature 4)
The timing information according to feature 2 or 3, wherein the timing information indicates both the timing of the transmission of the aperiodic channel state information in the PUCCH and the timing of the transmission of HARQ-ACK (hybrid automatic repeat request acknowledge) in the PUCCH. base station.

(Feature 5)
The base station according to feature 4, wherein the timing information is a PDSCH-to-HARQ feedback timing indicator.

(Feature 6)
The two or more candidate timings are two or more candidate timings for aperiodic channel state information.
The RRC message indicates the two or more candidate timings for aperiodic channel state information and the two or more candidate timings (53) for HARQ-ACK.
The timing information is
As the timing of the transmission of the aperiodic channel state information in the PUCCH, one of the two or more candidate timings for the aperiodic channel state information is shown.
As the timing of transmission of HARQ-ACK in PUCCH, one of the two or more candidate timings for HARQ-ACK is shown.
The base station according to feature 4 or 5.

(Feature 7)
The RRC message is
The first information element (31) indicating the two or more candidate timings for HARQ-ACK, and
A second information element (33) indicating the two or more candidate timings for aperiodic channel state information, and
6. The base station according to feature 6.

(Feature 8)
The first information element and the second information element indicate different numbers of candidate timings.
The number of bits of the timing information is determined according to the larger of the number of candidate timings indicated by the first information element and the number of candidate timings indicated by the second information element.
The base station according to feature 7.

(Feature 9)
The RRC message is
The first information element (31) indicating the two or more candidate timings for HARQ-ACK, and
A second information element (35) indicating a timing offset (55) between HARQ-ACK and aperiodic channel state information,
Including
The two or more candidate timings for aperiodic channel state information are indicated by the first information element and the second information element.
The base station according to feature 6.

(Feature 10)
The RRC message includes an information element (37) indicating two or more combinations (57) of candidate timing (53) for HARQ-ACK and candidate timing (51) for aperiodic channel state information. ,
The timing information indicates one of the two or more combinations as the timing of the transmission of HARQ-ACK in the PUCCH and the timing of the transmission of the aperiodic channel state information in the PUCCH.
The base station according to feature 6.

(Feature 11)
The base station according to feature 10, wherein the timing information is information of 4 bits or more.

(Feature 12)
The two or more candidate timings are two or more candidate timings common to the aperiodic channel state information and HARQ-ACK.
The timing information indicates one of the two or more candidate timings as a common timing between the transmission of the aperiodic channel state information in the PUCCH and the transmission of the HARQ-ACK in the PUCCH.
The base station according to feature 4 or 5.

(Feature 13)
The base station according to feature 2 or 3, wherein the DCI further comprises other timing information (45) indicating the timing of the transmission of HARQ-ACK in the PUCCH.

(Feature 14)
The base station according to feature 13, wherein the other timing information is a PDSCH-to-HARQ feedback timing indicator.

(Feature 15)
The two or more candidate timings are two or more candidate timings common to the aperiodic channel state information and HARQ-ACK.
The other timing information indicates one of the two or more candidate timings as the timing of the transmission of the HARQ-ACK in the PUCCH.
The base station according to feature 13 or 14.

(Feature 16)
The two or more candidate timings are two or more candidate timings for aperiodic channel state information.
The RRC message is
A first information element (31) indicating two or more candidate timings (53) for HARQ-ACK, and
A second information element (33) indicating the two or more candidate timings for aperiodic channel state information, and
Including
The other timing information indicates one of the two or more candidate timings for the HARQ-ACK as the timing of the transmission of the HARQ-ACK in the PUCCH.
The base station according to feature 13 or 14.

(Feature 17)
The base station according to feature 7, 8, 9 or 16, wherein the first information element is DL-DataToUL-ACK in PUCCH-Config included in the RRC message.

(Feature 18)
The DCI format is one DCI format among a plurality of DCI formats.
The RRC message indicates two or more candidate timings for each of the plurality of DCI formats.
The timing information indicates one of the two or more candidate timings for the one DCI format as the timing of the transmission of the aperiodic channel state information in the PUCCH.
The base station according to any one of the features 2 to 17.

(Feature 19)
The DCI contains the timing information.
The timing information indicates one of two or more predetermined candidate timings (59) as the timing of the transmission of the aperiodic channel state information in the PUCCH.
The base station according to feature 1.

(Feature 20)
The RRC message contains the timing information.
The timing information indicates one of two or more predetermined candidate timings.
The base station according to feature 1.

(Feature 21)
The base station according to feature 20, wherein the timing information is an information element in PUCCH-Config included in the RRC message.

(Feature 22)
The base station according to feature 20, wherein the timing information is the minimum value of k2 in the PUSCH-TimeDomainResourceAllocationList contained in the RRC message.

(Feature 23)
The DCI format is one of a plurality of DCI formats.
The RRC message indicates the timing of transmission of aperiodic channel state information in the PUCCH for each format included in the plurality of DCI formats.
The base station according to any one of the features 20 to 22.

(Feature 24)
The timing information is from the timing of receiving the PDSCH (63) to the timing of the transmission of the aperiodic channel state information in the PUCCH (65) as the timing of the transmission of the aperiodic channel state information in the PUCCH. The base station according to any one of features 1 to 23, which indicates the period (71).

(Feature 25)
The timing information is from the timing of receiving the PDCCH (61) to the timing of the transmission of the aperiodic channel state information in the PUCCH (65) as the timing of the transmission of the aperiodic channel state information in the PUCCH. The base station according to any one of features 1 to 23, which indicates the period (73).

(Feature 26)
The timing information is the timing of the transmission of the aperiodic channel state information in the PUCCH, from the timing of the transmission of HARQ-ACK in the PUCCH (67) to the timing of the transmission of the aperiodic channel state information in the PUCCH (65). The base station according to any one of the features 1 to 23, which indicates the period (75) up to (75).

(Feature 27)
The base station according to any one of features 24 to 26, wherein the timing information indicates the number of slots as the period.

(Feature 28)
The base station according to any one of features 1 to 27, further comprising a reception processing unit (143) for receiving aperiodic channel state information transmitted by the user equipment in PUCCH.

(Feature 29)
Reception processing unit (231) that receives the radio resource control (RRC) message (30)
Equipped with
The reception processing unit is the downlink control information (DCI) (20) used for scheduling the physical downlink shared channel (PDSCH), and is the aperiodic channel state information in the physical uplink control channel (PUCCH). The DCI that triggers transmission is received on the physical downlink control channel (PDCCH) and received.
The RRC message or the DCI includes timing information (40) indicating the timing of the transmission of the aperiodic channel state information in the PUCCH.
A transmission processing unit (233) that transmits aperiodic channel state information in the PUCCH based on the timing information according to the DCI.
A user device (200) further comprising.

(Feature 30)
This is a method performed by the base station (100).
Sending a radio resource control (RRC) message (30) to a user device (200),
The downlink control information (DCI) (20) used for scheduling the physical uplink shared channel (PDSCH), which triggers the transmission of aperiodic channel state information on the physical uplink control channel (PUCCH). To the user equipment on the physical downlink control channel (PDCCH).
Including
The RRC message or the DCI comprises timing information (40) indicating the timing of the transmission of the aperiodic channel state information in the PUCCH.
Method.

(Feature 31)
It is a method performed by the user device (200).
Receiving a radio resource control (RRC) message (30) and
The downlink control information (DCI) (20) used for scheduling the physical uplink shared channel (PDSCH), which triggers the transmission of aperiodic channel state information on the physical uplink control channel (PUCCH). Is received on the physical downlink control channel (PDCCH),
Including
The RRC message or the DCI includes timing information (40) indicating the timing of the transmission of the aperiodic channel state information in the PUCCH.
A method further comprising transmitting aperiodic channel state information in the PUCCH based on the timing information in response to the DCI.

(Feature 32)
Sending a radio resource control (RRC) message (30) to a user device (200),
The downlink control information (DCI) (20) used for scheduling the physical uplink shared channel (PDSCH), which triggers the transmission of aperiodic channel state information on the physical uplink control channel (PUCCH). To the user equipment on the physical downlink control channel (PDCCH).
Is a program that causes a computer to execute
The RRC message or the DCI comprises timing information (40) indicating the timing of the transmission of the aperiodic channel state information in the PUCCH.
program.

(Feature 33)
Receiving a radio resource control (RRC) message (30) and
The downlink control information (DCI) (20) used for scheduling the physical uplink shared channel (PDSCH), which triggers the transmission of aperiodic channel state information on the physical uplink control channel (PUCCH). Is received on the physical downlink control channel (PDCCH),
Is a program that causes a computer to execute
The RRC message or the DCI includes timing information (40) indicating the timing of the transmission of the aperiodic channel state information in the PUCCH.
A program that causes a computer to transmit aperiodic channel state information in PUCCH based on the timing information according to the DCI.

(Feature 34)
Sending a radio resource control (RRC) message (30) to a user device (200),
The downlink control information (DCI) (20) used for scheduling the physical uplink shared channel (PDSCH), which triggers the transmission of aperiodic channel state information on the physical uplink control channel (PUCCH). To the user equipment on the physical downlink control channel (PDCCH).
Is a non-transitional substantive recording medium that can be read by a computer that records a program that causes the computer to execute.
The RRC message or the DCI comprises timing information (40) indicating the timing of the transmission of the aperiodic channel state information in the PUCCH.
A non-transitional substantive recording medium that can be read by a computer.

(Feature 35)
Receiving a radio resource control (RRC) message (30) and
The downlink control information (DCI) (20) used for scheduling the physical uplink shared channel (PDSCH), which triggers the transmission of aperiodic channel state information on the physical uplink control channel (PUCCH). Is received on the physical downlink control channel (PDCCH),
Is a non-transitional substantive recording medium that can be read by a computer that records a program that causes the computer to execute.
The RRC message or the DCI includes timing information (40) indicating the timing of the transmission of the aperiodic channel state information in the PUCCH.
A non-transitional substantive recording medium that can be read by a computer that records a program that causes the computer to execute aperiodic channel state information in PUCCH based on the timing information according to the DCI.

1 system 20 DCI
30 RRC message 31 1st information element 33, 35 2nd information element 37, 39 Information element 40 Timing information 45 Other timing information 51, 53, 59 Candidate timing 55 Timing offset 57 Combination 61, 63, 65, 67 Timing 71, 73, 75 Period 100 Base station 141 Transmission processing unit 143 Reception processing unit 200 User equipment 231 Reception processing unit 233 Transmission processing unit

Claims (15)

Transmission processing unit (141) that transmits a wireless resource control (RRC) message (30) to a user device (200).
Equipped with
The transmission processing unit is the downlink control information (DCI) (20) used for scheduling the physical downlink shared channel (PDSCH), and is the aperiodic channel state information in the physical uplink control channel (PUCCH). The DCI that triggers transmission is transmitted to the user device on the physical downlink control channel (PDCCH).
The RRC message or the DCI comprises timing information (40) indicating the timing of the transmission of the aperiodic channel state information in the PUCCH.
Base station (100). The DCI contains the timing information.
The RRC message indicates two or more candidate timings (51).
The timing information indicates one of the two or more candidate timings as the timing of the transmission of the aperiodic channel state information in the PUCCH.
The base station according to claim 1. The base station according to claim 2, wherein the timing information has one of two or more candidate values mapped to each of the two or more candidate timings. The timing information according to claim 2 or 3, indicating both the timing of the transmission of the aperiodic channel state information in the PUCCH and the timing of the transmission of HARQ-ACK (hybrid automatic repeat request acknowledge) in the PUCCH. Base station. The two or more candidate timings are two or more candidate timings for aperiodic channel state information.
The RRC message indicates the two or more candidate timings for aperiodic channel state information and the two or more candidate timings (53) for HARQ-ACK.
The timing information is
As the timing of the transmission of the aperiodic channel state information in the PUCCH, one of the two or more candidate timings for the aperiodic channel state information is shown.
As the timing of transmission of HARQ-ACK in PUCCH, one of the two or more candidate timings for HARQ-ACK is shown.
The base station according to claim 4. The RRC message is
The first information element (31) indicating the two or more candidate timings for HARQ-ACK, and
A second information element (33) indicating the two or more candidate timings for aperiodic channel state information, and
5. The base station according to claim 5. The first information element and the second information element indicate different numbers of candidate timings.
The number of bits of the timing information is determined according to the larger of the number of candidate timings indicated by the first information element and the number of candidate timings indicated by the second information element.
The base station according to claim 6. The RRC message is
The first information element (31) indicating the two or more candidate timings for HARQ-ACK, and
A second information element (35) indicating a timing offset (55) between HARQ-ACK and aperiodic channel state information,
Including
The two or more candidate timings for aperiodic channel state information are indicated by the first information element and the second information element.
The base station according to claim 5. The RRC message includes an information element (37) indicating two or more combinations (57) of candidate timing (53) for HARQ-ACK and candidate timing (51) for aperiodic channel state information. ,
The timing information indicates one of the two or more combinations as the timing of the transmission of HARQ-ACK in the PUCCH and the timing of the transmission of the aperiodic channel state information in the PUCCH.
The base station according to claim 5. The base station according to claim 9, wherein the timing information is information of 4 bits or more. The two or more candidate timings are two or more candidate timings common to the aperiodic channel state information and HARQ-ACK.
The timing information indicates one of the two or more candidate timings as a common timing between the transmission of the aperiodic channel state information in the PUCCH and the transmission of the HARQ-ACK in the PUCCH.
The base station according to claim 4. The base station according to claim 2 or 3, wherein the DCI further includes other timing information (45) indicating the timing of transmission of HARQ-ACK in PUCCH. The two or more candidate timings are two or more candidate timings common to the aperiodic channel state information and HARQ-ACK.
The other timing information indicates one of the two or more candidate timings as the timing of the transmission of the HARQ-ACK in the PUCCH.
The base station according to claim 12. The two or more candidate timings are two or more candidate timings for aperiodic channel state information.
The RRC message is
A first information element (31) indicating two or more candidate timings (53) for HARQ-ACK, and
A second information element (33) indicating the two or more candidate timings for aperiodic channel state information, and
Including
The other timing information indicates one of the two or more candidate timings for the HARQ-ACK as the timing of the transmission of the HARQ-ACK in the PUCCH.
The base station according to claim 12. Reception processing unit (231) that receives the radio resource control (RRC) message (30),
Equipped with
The reception processing unit is the downlink control information (DCI) (20) used for scheduling the physical downlink shared channel (PDSCH), and is the aperiodic channel state information in the physical uplink control channel (PUCCH). The DCI that triggers transmission is received on the physical downlink control channel (PDCCH) and received.
The RRC message or the DCI includes timing information (40) indicating the timing of the transmission of the aperiodic channel state information in the PUCCH.
A transmission processing unit (233) that transmits aperiodic channel state information in the PUCCH based on the timing information according to the DCI.
A user device (200) further comprising.

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