WO2019242526A1

WO2019242526A1 - Method for sending uplink control information, terminal device, and network side device

Info

Publication number: WO2019242526A1
Application number: PCT/CN2019/090655
Authority: WO
Inventors: 鲁智; 潘学明; 孙鹏
Original assignee: 维沃移动通信有限公司
Priority date: 2018-06-21
Filing date: 2019-06-11
Publication date: 2019-12-26
Also published as: CN110635869B; CN110635869A

Abstract

Provided are a method for sending uplink control information, a terminal device, and a network side device, the method comprising: receiving downlink control information (DCI), the DCI being used to indicate uplink control information (UCI) that is fed back by a terminal device and that corresponds to historical downlink transmission, wherein the UCI that corresponds to historical downlink transmission is not fed back or fails to be fed back; and sending the UCI.

Description

Method for transmitting uplink control information, terminal equipment and network side equipment

Cross-reference to related applications

This application claims the priority of Chinese Patent Application No. 201810643473.1 filed in China on June 21, 2018, the entire contents of which are hereby incorporated by reference.

Technical field

The present disclosure relates to the field of communications, and in particular, to an uplink control information sending method, a terminal device, and a network-side device.

Background technique

In the fifth generation (Fifth Generation) (5G) mobile communication system New Radio (NR), the unlicensed frequency band (unlicensed band) can be used as a supplement to the licensed frequency band (licensed band) to help operators perform services. Expansion. Because the unlicensed frequency band is shared by multiple technologies, for example, Wireless-Fidelity (WiFi), radar, Long-Term Evolution-License Assisted Access (LTE-LAA), etc. Therefore, when using unlicensed frequency bands, the listen-before-talk (LTB) rule must be met, that is, channel monitoring is performed before sending data, and data transmission can be performed only when the monitoring result is that the channel is idle, to ensure that All devices can use the unlicensed band resources fairly.

When a terminal device (User Equipment) feeds back uplink control information (Uplink Control Information (UCI)) to the base station, if the channel interception result is that the channel is busy, the UE cannot send UCI in time, so that the base station needs to perform previous scheduling Data retransmission makes resource utilization low.

Summary of the Invention

The purpose of the embodiments of the present disclosure is to provide an uplink control information sending method, a terminal device, and a network-side device to solve the problem of resource utilization.

In a first aspect, an embodiment of the present disclosure provides a method for sending uplink control information, which is applied to a terminal device. The method includes:

Receiving downlink control information DCI, where the DCI is used to instruct the terminal device to feed back uplink control information UCI corresponding to historical downlink transmission, wherein the UCI corresponding to the historical downlink transmission is not feedback or feedback fails;

The UCI is sent.

In a second aspect, an embodiment of the present disclosure further provides a method for sending uplink control information, which is applied to a network-side device. The method includes:

A DCI is sent, where the DCI is used to instruct the terminal device to feedback the UCI corresponding to the historical downlink transmission, and the UCI corresponding to the historical downlink transmission is not fed back or the feedback fails.

In a third aspect, an embodiment of the present disclosure further provides a terminal device, including:

A receiving module for receiving DCI, wherein the DCI is used to instruct the terminal device to feed back UCI corresponding to historical downlink transmission, wherein the UCI corresponding to the historical downlink transmission is not feedback or feedback fails;

A sending module, configured to send the UCI.

According to a fourth aspect, an embodiment of the present disclosure provides a terminal device. The terminal device includes a processor, a memory, and a computer program stored on the memory and executable on the processor. The steps of implementing the uplink control information sending method according to the first aspect when the processor is executed are described.

In a fifth aspect, an embodiment of the present disclosure further provides a computer-readable storage medium, where the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the uplink control according to the first aspect is implemented Steps in the method of sending information.

According to a sixth aspect, an embodiment of the present disclosure further provides a network-side device, including:

A sending module is configured to send a DCI, where the DCI is used to instruct a terminal device to feedback a UCI corresponding to historical downlink transmission, wherein the UCI corresponding to the historical downlink transmission is not feedback or feedback fails.

In a seventh aspect, an embodiment of the present disclosure further provides a network-side device. The network-side device includes a processor, a memory, and a computer program stored on the memory and executable on the processor. The computer When the program is executed by the processor, the steps of the method for sending uplink control information according to the second aspect are implemented.

According to an eighth aspect, an embodiment of the present disclosure further provides a computer-readable storage medium. The computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the uplink control according to the second aspect is implemented. Steps in the method of sending information.

In the embodiment of the present disclosure, by receiving a DCI for instructing the terminal device to feedback the UCI corresponding to the historical downlink transmission, wherein the UCI corresponding to the historical downlink transmission is not feedback or the feedback fails, so that the terminal device sends the non-feedback or feedback failure in a timely manner. UCI can prevent data retransmission from network-side equipment and effectively improve resource utilization.

BRIEF DESCRIPTION OF THE DRAWINGS

The drawings described herein are used to provide a further understanding of the present disclosure and constitute a part of the present disclosure. The exemplary embodiments of the present disclosure and the description thereof are used to explain the present disclosure, and do not constitute an improper limitation on the present disclosure. In the drawings:

FIG. 1 is a schematic diagram of a network architecture according to an embodiment of the present disclosure;

2 is a schematic flowchart of an uplink control information sending method according to an embodiment of the present disclosure;

3 is a schematic diagram of PDSCH scheduling provided by an embodiment of the present disclosure;

4 is another schematic diagram of PDSCH scheduling provided by an embodiment of the present disclosure;

5 is a schematic diagram of bit number binding provided by an embodiment of the present disclosure;

FIG. 6 is another schematic flowchart of an uplink control information sending method according to an embodiment of the present disclosure.

7 is a schematic structural diagram of a terminal device according to an embodiment of the present disclosure;

8 is a schematic structural diagram of a network-side device according to an embodiment of the present disclosure;

FIG. 9 is another schematic structural diagram of a terminal device according to an embodiment of the present disclosure; FIG.

FIG. 10 is another schematic structural diagram of a network-side device according to an embodiment of the present disclosure.

detailed description

The technical solutions in the embodiments of the present disclosure will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, but not all of the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by a person of ordinary skill in the art without creative efforts shall fall within the protection scope of the present disclosure.

Referring to FIG. 1, FIG. 1 is a schematic diagram of a network architecture according to an embodiment of the present disclosure. As shown in FIG. 1, the system includes a user terminal 11 and a base station 12. The user terminal 11 may be a user equipment (UE), for example, a mobile phone, a tablet computer (Computer), and a laptop computer (Laptop). Computer), personal digital assistant (PDA), mobile Internet device (MID) or wearable device (Wearable Device) and other terminal-side devices, it should be noted that in the embodiment of the present disclosure and The specific type of the user terminal 11 is not limited. The above base station 12 may be a base station of 5G and later versions (for example, gNB, 5G, NR, and NB), or a base station in another communication system, or referred to as a Node B. It should be noted that in the embodiment of the present disclosure, only 5G is used The base station is taken as an example, but the specific type of the base station 12 is not limited.

It should be noted that the specific functions of the user terminal 11 and the base station 12 will be described in detail through the following embodiments.

FIG. 2 is a schematic flowchart of an uplink control information sending method according to an embodiment of the present disclosure. The method is applied to a terminal device, and the method may be as follows.

Step S210: Receive downlink control information (DCI) from a network-side device, where the DCI is used to instruct a terminal device to feedback a UCI corresponding to a historical downlink transmission, and the UCI corresponding to the historical downlink transmission is not fed back or the feedback fails.

Step S220: Send the UCI corresponding to the historical downlink transmission without feedback or feedback failure to the network-side device.

For historical downlink transmission, the terminal device needs to perform channel monitoring before feeding back the UCI corresponding to the historical downlink transmission. If the channel monitoring result is that the channel is busy, the UCI corresponding to the historical downlink transmission cannot be fed back or the feedback fails.

In order to enable the UCI corresponding to the historical downlink transmission without feedback or feedback failure to timely feedback to the network-side device, receive the DCI that instructs the terminal device to feedback the UCI corresponding to the historical downlink transmission, and then the terminal device sends the history of the non-feedback or feedback failure. The UCI corresponding to the downlink transmission enables the network-side device to receive feedback in a timely manner.

According to the different UCI that needs to be fed back, the sending process of the UCI is described in detail below.

The first type: UCI is ACK / NACK corresponding to PDSCH.

In the embodiment of the present disclosure, DCI is used to schedule a first Physical Downlink Shared Channel (PDSCH) group, where the first PDSCH group is associated with a first Physical Uplink Control Channel (PUCCH) PDSCH set; historical downlink transmission is the second PDSCH group, where the second PDSCH group is the PDSCH set associated with the second PUCCH, the sending time of the second PUCCH is earlier than the sending time of the first PUCCH; UCI corresponds to the second PDSCH group Acknowledgement (ACK) / Negative Acknowledgement (NACK).

FIG. 3 is a schematic diagram of PDSCH scheduling provided by an embodiment of the present disclosure.

As shown in FIG. 3, the network-side device is configured with two groups of PDSCHs, that is, a maximum of two groups of PDSCH ACK / NACK information is fed back on one PUCCH resource. PDSCH group 1 is a PDSCH set associated with PUCCH1, PDSCH group 1 includes three PDSCHs; PDSCH group 2 is a PDSCH set associated with PUCCH2, and PDSCH group 2 includes three PDSCHs.

The network-side device schedules PDSCH group 2 and PDSCH group 1 in order.

When the network-side device schedules downlink transmission of PDSCH group 2, the terminal device needs to feed back ACK / NACK corresponding to PDSCH group 2 at the sending time of PUCCH2.

However, if the channel monitoring result of the terminal device at the transmission time of PUCCH2 is that the channel is busy, the ACK / NACK corresponding to the PDSCH group 2 cannot be fed back. At this time, PDSCH group 2 becomes the historical downlink transmission second PDSCH group, PUCCH2 becomes the second PUCCH associated with the historical downlink transmission second PDSCH group (PDSCH group 2), and the ACK / NACK corresponding to the non-feedback PDSCH group 2 becomes the historical downlink. UCI corresponding to the second PDSCH group (PDSCH group 2) is transmitted.

In order to feedback the historical downlink transmission ACK / NACK corresponding to the second PDSCH group (PDSCH group 2) in time, when the network-side device schedules the downlink transmission of PDSCH group 1, that is, PDSCH group 1 becomes the first PDSCH group of the current downlink transmission, and PUCCH1 becomes the same as the current downlink. A first PUCCH associated with the first PDSCH group (PDSCH group 1) is transmitted. The terminal device receives a DCI that schedules the current downlink transmission of the first PDSCH group (PDSCH group 1), where the DCI is used to indicate that the terminal device feedbacks the historical downlink transmission corresponding to the second PDSCH group (PDSCH group 2) that has not previously been feedback or failed to feedback. ACK / NACK.

Furthermore, the terminal device sends the ACK / NACK corresponding to the historical downlink transmission second PDSCH group (PDSCH group 2) and the current downlink transmission number on the first PUCCH (PUCCH1) associated with the current downlink transmission first PDSCH group (PDSCH group 1). ACK / NACK corresponding to one PDSCH group (PDSCH group 1).

In the embodiment of the present disclosure, whether to send the ACK / NACK corresponding to the historical downlink transmission can be configured by displaying an indication or a hidden indication, which are respectively described in detail below.

A: Display instructions.

In the embodiment of the present disclosure, sending UCI corresponding to historical downlink transmission includes:

If the DCI includes the hybrid automatic repeat request confirmation information (Hybrid ARQ, Hybrid ARQ, HARQ-ACK) indication field of the second PDSCH group, the ACK / NACK and ACK / NACK corresponding to the first PDSCH group.

In the DCI scheduling the current downlink transmission of the first PDSCH group, the HARQ-ACK indication field of the historical downlink transmission of the second PDSCH group is added.

After the terminal device receives the DCI scheduling the current downlink transmission of the first PDSCH group, if the HARQ-ACK indicator field of the historical downlink transmission of the second PDSCH group included in the DCI is active, the terminal device communicates with the current downlink transmission first. The historical downlink transmission ACK / NACK corresponding to the second PDSCH group and the current downlink transmission ACK / NACK corresponding to the first PDSCH group are transmitted on the first PUCCH associated with the PDSCH group, which can prevent the network side device from receiving the historical downlink transmission second PDSCH. Group corresponding ACK / NACK for data retransmission;

If the HARQ-ACK indicator field of the historical downlink transmission second PDSCH group included in the DCI is inactive, the terminal device sends the current downlink transmission first PDSCH group on the first PUCCH associated with the current downlink transmission first PDSCH group. Corresponding ACK / NACK.

ACK / NACK corresponding to different PDSCH groups can be sent after joint coding or independent coding.

In the embodiment of the present disclosure, the second PDSCH group includes at least one PDSCH group; the DCI includes multiple HARQ-ACK indication fields, and different HARQ-ACK indication fields correspond to different PDSCH groups in the second PDSCH group.

If there are multiple PDSCH groups in the historical downlink transmission second PDSCH group that have no ACK / NACK feedback or feedback failure, the DCI scheduling the current downlink transmission first PDSCH group may include each PDSCH in the historical downlink transmission second PDSCH group. The HARQ-ACK indication field of the group.

The network side device configures the group identification ID of the PDSCH group, so that in the DCI scheduling the current downlink transmission of the first PDSCH group, a group ID count field is added, where the group ID count field is used to indicate which group of PDSCHs are currently scheduled and auxiliary The HARQ-ACK indicator field of the historical downlink transmission second PDSCH group is used to determine which PDSCH group corresponding to the historical downlink transmission second PDSCH group corresponds to the ACK / NACK.

FIG. 4 is another schematic diagram of PDSCH scheduling provided by an embodiment of the present disclosure.

As shown in FIG. 4, the network-side device is configured with three groups of PDSCHs, that is, a maximum of three groups of PDSCH ACK / NACK information is fed back on one PUCCH resource. PDSCH group 3 is a PDSCH set associated with PUCCH3, PDSCH group 3 includes three PDSCHs; PDSCH group 2 is a PDSCH set associated with PUCCH2, PDSCH group 2 includes three PDSCHs; PDSCH group 1 is a PDSCH set associated with PUCCH1, and PDSCH Group 1 includes three PDSCHs.

Because the network-side device is configured with three groups of PDSCH, the number of bits in the group ID count field is 2 bits, and the number of bits in the HARQ-ACK feedback indication field in the DCI scheduling PDSCH is 3 bits.

The network side schedules PDSCH group 3, PDSCH group 2 and PDSCH group 1 in order.

When the network-side device schedules downlink transmission of PDSCH group 3, that is, PDSCH group 3 becomes the first PDSCH group of the current downlink transmission, and PUCCH3 becomes the first PUCCH associated with the current downlink transmission first PDSCH group (PDSCH group 3).

At this time, the group ID count field in the DCI scheduling the current downlink transmission of the first PDSCH group (PDSCH group 3) is 00. If the HARQ-ACK feedback indication field in the DCI is 000 or 100, then on the first PUCCH (PUCCH3) associated with the current downlink transmission first PDSCH group (PDSCH group 3), the current downlink transmission first PDSCH group ( PDSCH group 3) corresponding ACK / NACK.

When the network-side device schedules downlink transmission of PDSCH group 2, that is, PDSCH group 2 becomes the first PDSCH group of the current downlink transmission, and PUCCH2 becomes the first PUCCH and PDSCH group 3 associated with the current downlink transmission first PDSCH group (PDSCH group 2) becomes history. Downlink transmission of the second PDSCH group, and PUCCH3 becomes the second PUCCH associated with the historical downlink transmission second PDSCH group (PDSCH group 3).

At this time, the group ID count field in the DCI scheduling the first downlink transmission PDSCH group (PDSCH group 2) is 01. If the HARQ-ACK feedback indication field in the DCI is 000 or 010, then on the first PUCCH (PUCCH2) associated with the current downlink transmission first PDSCH group (PDSCH group 2), the current downlink transmission first PDSCH group ( PDSCH group 2) corresponding ACK / NACK;

If the HARQ-ACK feedback indication field in the DCI is 100 or 110, the historical downlink transmission second PDSCH group is sent on the first PUCCH (PUCCH2) associated with the current downlink transmission first PDSCH group (PDSCH group 2) ( The ACK / NACK corresponding to the PDSCH group 3) and the ACK / NACK corresponding to the first PDSCH group (PDSCH group 2) in the current downlink transmission.

When the network-side device schedules downlink transmission of PDSCH group 1, that is, PDSCH group 1 becomes the first PDSCH group of the current downlink transmission, and PUCCH1 becomes the first PUCCH, PDSCH group 3, and PDSCH associated with the current downlink transmission first PDSCH group (PDSCH group 1). Group 2 becomes the historical downlink transmission second PDSCH group, and PUCCH3 and PUCCH2 become the second PUCCH associated with the historical downlink transmission second PDSCH group (PDSCH group 3 and PDSCH group 2).

At this time, the group ID count field in the DCI scheduling the first downlink transmission PDSCH group (PDSCH group 3) is 10.

If the HARQ-ACK feedback indication field in the DCI is 000 or 001, then on the first PUCCH (PUCCH1) associated with the current downlink transmission first PDSCH group (PDSCH group 1), the current downlink transmission first PDSCH group ( PDSCH group 1) corresponding ACK / NACK;

If the HARQ-ACK feedback indication field in the DCI is 010 or 011, the historical downlink transmission second PDSCH group is sent on the first PUCCH (PUCCH1) associated with the current downlink transmission first PDSCH group (PDSCH group 1) ( PDSCH group 2) corresponding ACK / NACK and current downlink transmission ACK / NACK corresponding to first PDSCH group (PDSCH group 1);

If the HARQ-ACK indicator field in the scheduling DCI is 110 or 111, the historical downlink transmission second PDSCH group is sent on the first PUCCH (PUCCH1) associated with the current downlink transmission first PDSCH group (PDSCH group 1) ( The ACK / NACK corresponding to the PDSCH group 3 and the PDSCH group 2) and the ACK / NACK corresponding to the first PDSCH group (PDSCH group 1) in the current downlink transmission.

The network-side device may also add a DAI total identifier to the DCI of the scheduled downlink transmission PDSCH group, which is used to indicate the total number of PDSCHs included in the currently scheduled downlink transmission PDSCH group.

B: Hiding instructions.

If the preset information corresponding to the DCI conforms to the preset sending rule, on the first PUCCH, an ACK / NACK corresponding to the second PDSCH group and an ACK / NACK corresponding to the first PDSCH group are transmitted.

The network-side device determines a preset sending rule for sending ACK / NACK corresponding to historical downlink transmission, and configures the preset sending rule to the terminal device through high-level signaling, so that when the terminal device receives the DCI that schedules the current downlink transmission of the first PDSCH group When the preset information corresponding to the DCI meets the preset transmission rule, the terminal device sends the ACK / NACK corresponding to the historical downlink transmission second PDSCH group and the current downlink on the first PUCCH associated with the current downlink transmission first PDSCH group. Transmitting the ACK / NACK corresponding to the first PDSCH group can avoid data retransmission because the network-side device cannot receive the historical downlink transmission ACK / NACK corresponding to the second PDSCH group.

The concealed indication modes may include the following.

(1) The CORESET corresponding to the physical downlink control channel (Physical Downlink Control Channel, PDCCH) carrying the DCI is the target CORESET.

For example, the preset sending rule is determined according to a CORESET corresponding to a PDCCH that bears the current downlink transmission of the DCI of the first PDSCH group.

If the CORESET ID corresponding to the PDCCH bearing the DCI of the current downlink transmission of the first PDSCH group is an even number, the ACK corresponding to the current downlink transmission of the first PDSCH group is sent on the first PUCCH associated with the current downlink transmission of the first PDSCH group. NACK;

If the CORESET ID corresponding to the PDCCH carrying the DCI of the first downlink transmission PDSCH group is an odd number, the ACK corresponding to the historical downlink transmission second PDSCH group is sent on the first PUCCH associated with the first downlink transmission PDSCH group. The NACK and the current downlink transmission of the ACK / NACK corresponding to the first PDSCH group.

The number of PDSCH groups in the historical downlink transmission second PDSCH group that need to feed back ACK / NACK is configured by the network, for example, 1, 2, 3, 4 and other values.

(2) The search space corresponding to the PDCCH carrying DCI is the target search space.

For example, a preset sending rule is determined according to a search space corresponding to a PDCCH carrying a current downlink transmission DCI of a first PDSCH group.

If the search space ID corresponding to the PDCCH carrying the DCI of the first downlink transmission PDSCH group is even, the ACK corresponding to the first downlink transmission PDSCH group is sent on the first PUCCH associated with the first downlink transmission PDSCH group. / NACK;

If the search space ID corresponding to the PDCCH carrying the DCI of the first downlink PDSCH group is scheduled to be an odd number, the ACK corresponding to the historical downlink transmission second PDSCH group is sent on the first PUCCH associated with the first downlink PDSCH group. / NACK and ACK / NACK corresponding to the first PDSCH group in the current downlink transmission.

(3) The control information element (Control Channel Element, CCE) corresponding to the PDCCH carrying DCI is the target CCE.

For example, a preset sending rule is determined according to a CCE corresponding to a PDCCH that bears the current downlink transmission of the DCI of the first PDSCH group.

If the starting CCE ID corresponding to the PDCCH bearing the DCI of the current downlink transmission of the first PDSCH group is an even number, then the corresponding downlink current transmission of the first PDSCH group is sent on the first PUCCH associated with the current downlink transmission of the first PDSCH group. ACK / NACK;

If the starting CCE ID corresponding to the PDCCH carrying the DCI of the first downlink transmission PDSCH group is an odd number, the historical downlink transmission corresponding to the second PDSCH group is sent on the first PUCCH associated with the current downlink transmission first PDSCH group. The ACK / NACK and the ACK / NACK corresponding to the first PDSCH group of the current downlink transmission.

(4) ACK / NACK Resource Indexes (ARI) in DCI are the target ARI.

For example, a preset sending rule is determined according to the ARI in the DCI that schedules the current downlink transmission of the first PDSCH group.

If the ARI in the DCI of the first downlink transmission PDSCH group is scheduled to use the second half of the total number of configured ARI resources, then the corresponding one of the current downlink transmission first PDSCH group is sent on the first PUCCH associated with the current downlink transmission first PDSCH group. ACK / NACK;

If the ARI in the DCI of the first downlink PDSCH group is scheduled to use the first half of the total number of configured ARI resources, an ACK corresponding to the historical downlink transmission second PDSCH group is sent on the first PUCCH associated with the first downlink PDSCH group. / NACK and ACK / NACK corresponding to the first PDSCH group in the current downlink transmission.

(5) The transmission power control (Transmit Power Control, TPC) in DCI is the target TPC.

For example, the preset sending rule is determined according to the TPC in the DCI that schedules the current downlink transmission of the first PDSCH group.

For example, if the TPC indication 1 or 3 in the DCI of the current downlink transmission first PDSCH group is scheduled, then an ACK / NACK corresponding to the current downlink transmission first PDSCH group is sent on the first PUCCH associated with the current downlink transmission first PDSCH group. ;

If the TPC in the DCI of the first PDSCH group for the current downlink transmission is scheduled to indicate 0 or 2, the ACK / NACK corresponding to the historical downlink transmission for the second PDSCH group and the current PDSCH group are sent on the first PUCCH associated with the current downlink transmission for the first PDSCH group. Downlink transmits the ACK / NACK corresponding to the first PDSCH group.

(6) Cyclic Redundancy Check (CRC) in DCI is the target CRC.

In the related art, the CRC length in the DCI is 24 bits, and the radio network temporary coding (RNTI) of the terminal equipment scrambles 16 of the bits, and the remaining 8 bits can be used. In the embodiment of the present disclosure, an 8-bit sequence is designed, for example, a ZC sequence, a Walsh sequence, or the like, scrambles the 8-bit CRC, and assists to indicate whether to feedback the ACK / NACK corresponding to the historical downlink transmission.

For example, if the scramble code corresponding to the CRC in the DCI scheduling the current downlink transmission of the first PDSCH group is [1,1,1,1,1], then the current downlink is sent on the first PUCCH associated with the first PDSCH group of the current downlink transmission. Transmitting an ACK / NACK corresponding to the first PDSCH group;

If the scramble code corresponding to the CRC in the DCI of the current first downlink transmission PDSCH group is scheduled to be [1, -1, -1, 1, 1, -1], it is sent on the first PUCCH associated with the first PDSCH group for current downlink transmission. The current downlink transmission of the ACK / NACK corresponding to the first PDSCH group and the most recent historical downlink transmission of the ACK / NACK corresponding to the second PDSCH group;

If the scramble code corresponding to the CRC in the DCI of the first PDSCH group scheduled for the current downlink transmission is [1, 1, 1, -1, -1], it is sent on the first PUCCH associated with the first PDSCH group for the current downlink transmission. The current downlink transmission of the ACK / NACK corresponding to the first PDSCH group and the latest two historical downlink transmissions of the ACK / NACK corresponding to the second PDSCH group;

If the scramble code corresponding to the CRC in the DCI that schedules the current downlink transmission of the first PDSCH group is [1-1, -1, -1, -1, -1], it is sent on the first PUCCH associated with the first PDSCH group of the current downlink transmission The current downlink transmission of the ACK / NACK corresponding to the first PDSCH group and the latest three historical downlink transmissions of the ACK / NACK corresponding to the second PDSCH group.

In the embodiment of the present disclosure, sending the ACK / NACK corresponding to the second PDSCH group and the ACK / NACK corresponding to the first PDSCH group on the first PUCCH includes: if the number of bits of the ACK / NACK corresponding to the second PDSCH group is greater than the pre- If the number of bits is set, the number of bits is bound to the ACK / NACK corresponding to the second PDSCH group according to the preset number of bits to obtain the bound ACK / NACK corresponding to the second PDSCH group, where the preset number of bits indicates the second The maximum number of transmission bits of the ACK / NACK corresponding to the PDSCH group; on the first PUCCH, a post-binding ACK / NACK corresponding to the second PDSCH group and an ACK / NACK corresponding to the first PDSCH group are sent.

When ACK / NACK corresponding to multiple PDSCH groups are fed back on one PUCCH, if feedback is performed according to a semi-static codebook, that is, ACK / NACK is fed back according to the number of PDSCHs that may be received, and the feedback efficiency is low; if performed according to a dynamic codebook Feedback, that is, ACK / NACK is fed back according to the number of PDSCHs actually received. When the scheduling authorization of the last PDSCH is lost, the ACK / NACK payload size will be confused, causing the network-side device to fail to decode the received ACK / NACK. .

In order to avoid confusion of the size of the ACK / NACK payload, if one or more ACK / NACKs corresponding to the PDSCH group are transmitted on the first PUCCH associated with the first PDSCH group in the current downlink transmission, the ACK / NACK corresponding to each PDSCH group The maximum number of transmitted bits is configured.

FIG. 5 is a schematic diagram of bit number binding provided by an embodiment of the present disclosure.

In FIG. 5, in the historical downlink transmission of the second PDSCH group (PDSCH group 3 and PDSCH group 2), PDSCH group 3 includes six PDSCHs corresponding to PDSCH: DAI = 1-6, and PDSCH group 2 includes six PDSCHs: DAI = PDSCH corresponding to 1-6.

The network-side device is configured with a preset number of 4 bits, that is, the maximum number of transmission bits of ACK / NACK corresponding to each PDSCH group in the historical downlink transmission second PDSCH group (PDSCH group 3 and PDSCH group 2) is 4 bits.

Since the historical downlink transmission second PDSCH group (PDSCH group 3) includes 6 PDSCH, if the number of bits is not bound, the number of ACK / NACK bits corresponding to the historical downlink transmission second PDSCH group (PDSCH group 3) is at least 6 bits , 4bit greater than the preset number of bits. Therefore, the number of bits of ACK / NACK corresponding to the second PDSCH group (PDSCH group 3) of historical downlink transmission is bound: for PDSCH with DAI = 1 to 3, corresponding to 1bit ACK / NACK respectively; for DAI = 4-6 PDSCH corresponds to 1-bit ACK / NACK in total. At this time, the number of bits of the ACK / NACK corresponding to the second PDSCH group (PDSCH group 3) in the historical downlink transmission is 4 bits.

Since the historical downlink transmission second PDSCH group (PDSCH group 2) includes 6 PDSCH, if the number of bits is not bound, the number of ACK / NACK bits corresponding to the historical downlink transmission second PDSCH group (PDSCH group 2) is at least 6 bits , 4bit greater than the preset number of bits. Therefore, the number of bits of the ACK / NACK corresponding to the second PDSCH group (PDSCH group 2) of historical downlink transmission is bound: for PDSCH with DAI = 1 to 3, corresponding to 1bit ACK / NACK respectively; for DAI = 4-6 PDSCH corresponds to 1-bit ACK / NACK in total. At this time, the number of bits of ACK / NACK corresponding to the second PDSCH group (PDSCH group 2) in historical downlink transmission is 4 bits.

By performing bit number binding, the ACK / NACK payload corresponding to each PDSCH group in the second downlink PDSCH group in historical downlink transmission is a certain number of bits, and the load size will not be confused due to the loss of authorization.

In addition, for the PDSCH corresponding to the 1-bit ACK / NACK obtained by the binding operation shown in FIG. 5, that is, the PDSCH with DAI = 4-6, the network-side device can limit the number of PDSCHs to be scheduled. For example, only one DAI = 4 is scheduled. PDSCH to address potential loss of authorization.

It should be noted that if the number of ACK / NACK bits corresponding to a PDSCH group in the second PDSCH group during historical downlink transmission is less than the preset number of bits, a NACK is added to the ACK / NACK corresponding to the PDSCH group so that the preset value is reached The number of bits.

By configuring the DCI to schedule the current downlink transmission of the first PDSCH group, the DCI is used to instruct the terminal device to feedback the historical downlink transmission of the ACK / NACK corresponding to the second PDCSH group, which can prevent the network-side equipment from receiving the historical downlink transmission of the second PDSCH. Retransmission of data corresponding to ACK / NACK of a group effectively improves resource utilization.

The second type: UCI is an aperiodic channel state information (CSI, Channel State Information) report.

In the embodiment of the present disclosure, the historical downlink transmission is used to trigger the terminal device to feedback the target aperiodic CSI report at the first preset sending time;

UCI is the target aperiodic CSI report without feedback or feedback failure;

The first preset sending time is earlier than the receiving time of the DCI.

The network-side device sends a reference signal (RS) to the terminal device, so that the terminal device calculates the target aperiodic CSI report according to the RS, and feeds back the target aperiodic CSI report at the first preset sending time.

However, if the channel monitoring result of the terminal device is that the channel is busy at the first preset sending time, the target aperiodic CSI report cannot be fed back. At this time, the target aperiodic CSI report becomes the target aperiodic CSI report corresponding to the historical downlink transmission.

In order to timely feedback the target aperiodic CSI report corresponding to the historical downlink transmission, the network-side device is configured to instruct the feedback of the target aperiodic CSI report DCI corresponding to the historical downlink transmission, so that the terminal device sends the historical downlink transmission response after receiving the current DCI. Target aperiodic CSI report.

In the embodiment of the present disclosure, sending UCI includes:

If the DCI includes an indication field that triggers the reporting of the target aperiodic CSI report, the target aperiodic CSI report is sent at the second preset sending time indicated by the DCI.

The network-side device configures an indication field of the target aperiodic CSI report that is not fed back or fails to feedback in the current DCI, so that after receiving the current DCI, the terminal device sends the target aperiodic CSI at the second preset sending time indicated by the DCI. Report, without the need for the network-side device to resend the RS, and the terminal device does not need to recalculate the aperiodic CSI report, that is, report the historical CSI report.

Because the terminal device does not need to recalculate the aperiodic CSI report, the time interval between the current DCI and the second preset transmission time may be less than the historical DCI and the first pre-trigger that trigger the terminal device to send the target aperiodic CSI report at the first preset transmission time. Set the time interval between sending moments.

In the embodiment of the present disclosure, sending the target aperiodic CSI report includes:

If the time difference between the first preset sending time and the receiving time of the DCI is not greater than the preset valid duration, or the time difference between the second preset sending time and the first preset sending time is not greater than the preset valid duration, then Send target aperiodic CSI report.

The network-side device can configure a preset effective duration for the terminal device through high-level signaling, that is, the CSI report valid window, which indicates that the terminal device calculates the target aperiodic CSI report based on an RS without feedback or feedback failure. The duration of the CSI report.

After receiving the current DCI for the target aperiodic CSI report that indicates no feedback or feedback failure before the feedback, according to the first preset sending time of the target aperiodic CSI report that has no feedback or feedback failure, and the receiving time of the current DCI The time difference between the two, or the time difference between the first preset sending time and the second preset sending time indicated by the current DCI, to determine whether the target non-periodic CSI report that has not been feedback or failed to be feedback is valid.

If the time difference is not greater than the preset effective duration, that is, the target non-periodic CSI report with no feedback or feedback failure is valid, the terminal device sends the target non-periodic CSI report with no feedback or feedback failure at the second preset sending time;

If the time difference is greater than a preset valid duration, that is, the target aperiodic CSI report that has not been feedback or failed to feedback is invalid, the terminal device sends a preset value at a second preset sending time, for example, Out of Range (OOR).

By configuring the current DCI to indicate the target aperiodic CSI report that has not been feedback or failed before, the terminal device can avoid resending the RS because the network-side device cannot receive the target aperiodic CSI report that is not feedback or the feedback fails. Improved resource utilization.

The terminal device does not need to recalculate the aperiodic CSI report based on the RS, which is beneficial to energy saving. At the same time, the current receiving time of the DCI and the second preset sending time may adopt a smaller time interval to achieve the purpose of rapid reporting.

According to the technical solution described in the embodiment of the present disclosure, by receiving a DCI for instructing a terminal device to feedback a UCI corresponding to historical downlink transmission, wherein the UCI corresponding to the historical downlink transmission is not feedback or the feedback fails, the terminal device sends the non-feedback or Feedback UCI can prevent network side equipment from retransmitting data and effectively improve resource utilization.

FIG. 6 is another schematic flowchart of an uplink control information sending method according to an embodiment of the present disclosure. The method is applied to a network-side device, and the method may be as follows.

In step S610, a DCI is sent, where the DCI is used to instruct the terminal device to feedback the UCI corresponding to the historical downlink transmission, wherein the UCI corresponding to the historical downlink transmission is not fed back or the feedback fails.

In order to enable the UCI corresponding to the historical downlink transmission that has not been feedback or failed to feedback to the network side device in time, the network side device sends the DCI for instructing the terminal device to feedback the UCI corresponding to the historical downlink transmission, so that the terminal device receives the DCI After that, the UCI corresponding to the historical downlink transmission that has not been feedback before or has failed to feedback, enables the network-side device to receive the feedback in a timely manner.

Depending on the UCI that needs to be fed back, the DCI sent by the network-side device is different.

The first type: UCI is ACK / NACK corresponding to PDSCH.

In the embodiment of the present disclosure, DCI is used to schedule a first PDSCH group, wherein the first PDSCH group is a PDSCH set associated with the first PUCCH; historical downlink transmission is a second PDSCH group, wherein the second PDSCH group is related to the second PDSCH group. The PDSCH set associated with the PUCCH, the sending time of the second PUCCH is earlier than the sending time of the first PUCCH; UCI is the ACK / NACK corresponding to the second PDSCH group.

In order to timely report the historical downlink transmission of the ACK / NACK corresponding to the second PDSCH group, when the network-side device schedules the downlink transmission of the first PDSCH group, that is, the first PDSCH group is the current downlink transmission, and the network-side device sends the current downlink transmission to schedule the first PDSCH group. DCI, where the DCI is used to indicate that the terminal device has not previously reported or failed to feedback the historical downlink transmission of the ACK / NACK corresponding to the second PDSCH group, so that the terminal device transmits the first PUCCH associated with the first PDSCH group to the current downlink transmission. , The historical downlink transmission of the ACK / NACK corresponding to the second PDSCH group and the current downlink transmission of the ACK / NACK corresponding to the first PDSCH group.

In the embodiment of the present disclosure, whether the current DCI sent by the network-side device instructs the terminal device to send the ACK / NACK corresponding to the historical downlink transmission can be configured by displaying an indication or a hidden indication, which are described in detail below respectively.

A. Display instructions.

In the embodiment of the present disclosure, the DCI includes the HARQ-ACK indication field of the second PDSCH group, wherein the HARQ-ACK indication field of the second PDSCH group is used to instruct the terminal device to send, on the first PUCCH, a message corresponding to the second PDSCH group. ACK / NACK.

The HARQ-ACK indication field of the historical downlink transmission of the second PDSCH group is added to the DCI scheduled by the network-side device for the current downlink transmission of the first PDSCH group, so that after the terminal device receives the DCI, if the historical downlink transmission included in the DCI If the HARQ-ACK indicator field of the second PDSCH group is active, the historical downlink transmission ACK / NACK corresponding to the second PDSCH group and the first downlink transmission first PDSCH are sent on the first PUCCH associated with the current downlink transmission of the first PDSCH group. The ACK / NACK corresponding to the group can avoid data retransmission because the network-side device cannot receive the ACK / NACK corresponding to the second PDSCH group in the historical downlink transmission.

If there are multiple PDSCH groups with no ACK / NACK feedback or feedback failure in the second PDSCH group of historical downlink transmission, the DCI sent by the network-side device to schedule the current downlink transmission of the first PDSCH group may include the second downlink PDSCH group of historical downlink transmission HARQ-ACK indication field of each PDSCH group in the.

The network-side device may add a group ID count field to the DCI that is sent to schedule the current downlink transmission of the first PDSCH group, where the group ID count field is used to indicate which group of PDSCHs are currently scheduled and to assist historical downlink transmission of the second PDSCH The HARQ-ACK indication field of the group determines which feedback PDSCH group corresponds to the ACK / NACK of the second PDSCH group in the history downlink transmission.

B: Hiding instructions.

In the embodiment of the present disclosure, the preset information corresponding to the DCI complies with a preset sending rule.

The network-side device determines a preset sending rule of the ACK / NACK corresponding to the historical downlink transmission, and configures the preset sending rule to the terminal device through high-level signaling. The preset information corresponding to the DCI that schedules the current downlink transmission of the first PDSCH group sent by the network-side device conforms to the preset transmission rule. After receiving the DCI, the terminal device sends it on the first PUCCH associated with the current downlink transmission of the first PDSCH group. The ACK / NACK corresponding to the second PDSCH group in historical downlink transmission and the ACK / NACK corresponding to the first PDSCH group in current downlink transmission can prevent data from being transmitted because the network-side device cannot receive the ACK / NACK corresponding to the second PDSCH group in historical downlink transmission. Retransmission.

The concealed indication modes may include the following.

(1) The CORESET corresponding to the PDCCH carrying DCI is the target CORESET;

(2) The search space corresponding to the PDCCH carrying DCI is the target search space;

(3) The CCE corresponding to the PDCCH carrying DCI is the target CCE;

(4) The ARI in DCI is the target ARI;

(5) The TPC in DCI is the target TPC;

(6) The CRC in DCI is the target CRC.

In the embodiment of the present disclosure, the uplink control information sending method further includes: configuring a preset number of bits for the terminal device through high-level signaling, where the preset number of bits is used to indicate a bit of the ACK / NACK corresponding to the second PDSCH group. If the number is greater than the preset number of bits, the terminal device binds the number of bits of the ACK / NACK corresponding to the second PDSCH group according to the preset number of bits, to obtain the bound ACK / NACK corresponding to the second PDSCH group, and On the PUCCH, a bound ACK / NACK corresponding to the second PDSCH group and an ACK / NACK corresponding to the first PDSCH group are sent; the preset number of bits indicates the maximum number of transmission bits of the ACK / NACK corresponding to the second PDSCH group.

In order to avoid confusion of the size of the ACK / NACK payload, the network-side device configures a preset number of bits for the terminal device through high-level signaling, that is, the maximum number of transmission bits of ACK / NACK corresponding to each PDSCH group in the historical downlink transmission of the second PDSCH group. According to the preset number of bits, the terminal device binds the number of bits of the ACK / NACK corresponding to each PDSCH group in the historical downlink transmission second PDSCH group to obtain the bound ACK / NACK corresponding to the second PDSCH group, and On the first PUCCH, a post-bundling ACK / NACK corresponding to the second PDSCH group in historical downlink transmission and an ACK / NACK corresponding to the first PDSCH group in current downlink transmission are sent.

By setting the preset number of bits, the ACK / NACK payload corresponding to each PDSCH group in the historical downlink transmission second PDSCH group is a certain number of bits, and the size of the payload will not be confused due to loss of authorization.

By sending a DCI that schedules the current downlink transmission of the first PDSCH group, the DCI is used to instruct the terminal device to feedback the ACK / NACK corresponding to the historical downlink transmission of the second PDCSH group, which can avoid that the network-side device cannot receive the historical downlink transmission of the second PDSCH group. Data retransmission corresponding to ACK / NACK effectively improves resource utilization.

Second: UCI is a non-periodic CSI report.

The historical downlink transmission is used to trigger the terminal device to feedback the target aperiodic CSI report at the first preset sending time; UCI is the target aperiodic CSI report that has no feedback or feedback failure; wherein the first preset sending time is earlier than the receiving time of DCI .

The network side device configures a reference signal (Reference Symbol, RS) for the terminal device, so that the terminal device calculates a target aperiodic CSI report according to the RS, and feeds back the target aperiodic CSI report at a first preset sending time.

In order to timely feedback the target aperiodic CSI report corresponding to the historical downlink transmission, the network-side device sends a DCI indicating the target aperiodic CSI report corresponding to the historical downlink transmission, so that after the terminal device receives the current DCI, there is no feedback or feedback before the feedback. Failed target aperiodic CSI report.

In the embodiment of the present disclosure, the DCI includes an indication field for triggering target aperiodic CSI report reporting, wherein the indication field for triggering target aperiodic CSI report reporting is used to instruct the terminal device to send the target aperiodic CSI report at a second preset sending time. .

The network-side device configures an indication field of the target aperiodic CSI report that is not feedback or feedback failure in the current DCI sent, so that the terminal device sends the DCI at the second preset sending time indicated by the DCI after receiving the current DCI. Target aperiodic CSI report without the need for the network-side device to resend the RS, and the terminal device does not need to recalculate the aperiodic CSI report.

In the embodiment of the present disclosure, the method for sending uplink control information further includes:

Configure a preset valid duration for the terminal device through high-level signaling, where the preset valid duration is used to indicate that if the time difference between the first preset sending time and the receiving time of the DCI is not greater than the preset valid duration, or the second preset Assuming that the time difference between the sending time and the first preset sending time is not greater than the preset valid duration, the terminal device sends the target aperiodic CSI report.

After the network-side device sends the DCI indicating the target aperiodic CSI report that has not been feedback or failed before the feedback, the terminal device can set a first preset of the target aperiodic CSI report that has not been feedback or failed to feedback according to the current DCI receiving time The time difference between the sending times or, based on the time difference between the first preset sending time and the second preset sending time indicated by the current DCI, it is judged whether the target aperiodic CSI report that has not been feedback or has failed to feedback is valid.

If the time difference is greater than a preset valid duration, that is, the target aperiodic CSI report that has not been feedback or failed to feedback is invalid, the terminal device sends a preset value, such as OOR, at a second preset sending time.

By sending the DCI indicating the target aperiodic CSI report that the terminal device has not feedback or failed before, the terminal device can send the target aperiodic CSI report that has not been feedback or the feedback failed in a timely manner. Resending the target aperiodic CSI report without feedback or failed feedback effectively improves resource utilization.

The technical solution described in the embodiment of the present disclosure sends a DCI for instructing the terminal device to feedback the UCI corresponding to the historical downlink transmission, wherein the UCI corresponding to the historical downlink transmission is not feedback or the feedback fails, so that the terminal device sends the non-feedback or Feedback UCI can prevent network side equipment from retransmitting data and effectively improve resource utilization.

It should be noted that the “first PDSCH group” mentioned in the embodiments of the present disclosure indicates current downlink transmission, and the “second PDSCH group” indicates historical downlink transmission.

The “first PUCCH” mentioned in the embodiment of the present disclosure indicates a PUCCH associated with the first PDSCH group of the current downlink transmission, and the “second PUCCH” indicates a PUCCH associated with the second PDSCH group of the historical downlink transmission.

FIG. 7 is a schematic structural diagram of a terminal device according to an embodiment of the present disclosure. The terminal device 700 described in FIG. 7 includes:

The receiving module 701 is configured to receive DCI, where the DCI is used to instruct the terminal device 700 to feed back UCI corresponding to historical downlink transmission, wherein UCI corresponding to historical downlink transmission is not fed back or feedback fails;

The sending module 702 is configured to send UCI.

Optionally, the DCI is used to schedule a first PDSCH group, where the first PDSCH group is a PDSCH set associated with the first PUCCH;

The historical downlink transmission is a second PDSCH group, where the second PDSCH group is a PDSCH set associated with the second PUCCH, and the sending time of the second PUCCH is earlier than the sending time of the first PUCCH;

UCI is the ACK / NACK corresponding to the second PDSCH group.

Optionally, the sending module 702 is further configured to:

If the HARQ-ACK indication field of the second PDSCH group is included in the DCI, the ACK / NACK corresponding to the second PDSCH group and the ACK / NACK corresponding to the first PDSCH group are sent on the first PUCCH.

Optionally, the second PDSCH group includes at least one PDSCH group;

The DCI includes multiple HARQ-ACK indication fields, and different HARQ-ACK indication fields correspond to different PDSCH groups in the second PDSCH group.

Optionally, the sending module 702 is further configured to:

Optionally, the preset information corresponding to the DCI complies with a preset sending rule, including one of the following:

The CORESET corresponding to the PDCCH carrying DCI is the target CORESET;

The search space corresponding to the PDCCH carrying DCI is the target search space;

The CCE corresponding to the PDCCH carrying DCI is the target CCE;

The ARI in DCI is the target ARI;

TPC in DCI is the target TPC;

The CRC in DCI is the target CRC.

Optionally, the sending module 702 is further configured to:

If the number of bits of the ACK / NACK corresponding to the second PDSCH group is greater than the preset number of bits, according to the preset number of bits, the number of bits of the ACK / NACK corresponding to the second PDSCH group is bound to obtain the binding corresponding to the second PDSCH group ACK / NACK after determination, where the preset number of bits indicates the maximum number of transmission bits of ACK / NACK corresponding to the second PDSCH group;

On the first PUCCH, a post-binding ACK / NACK corresponding to the second PDSCH group and an ACK / NACK corresponding to the first PDSCH group are sent.

Optionally, the historical downlink transmission is used to trigger the terminal device to feedback the target aperiodic CSI report at the first preset sending time;

UCI is the target aperiodic CSI report without feedback or feedback failure;

The first preset sending time is earlier than the receiving time of the DCI.

Optionally, the sending module 702 is further configured to:

If the time difference between the first preset sending time and the receiving time of the DCI is not greater than the preset valid duration, or the time difference between the second preset sending time and the first preset sending time is not greater than the preset valid duration, then Send the target aperiodic CSI report at the second preset sending time.

The terminal device 700 provided in the embodiment of the present disclosure can implement the processes implemented by the terminal device in the method embodiment in FIG. 2. To avoid repetition, details are not described herein again.

FIG. 8 is a schematic structural diagram of a network-side device according to an embodiment of the present disclosure. The network-side device 800 shown in FIG. 8 includes:

The sending module 801 is configured to send DCI, where the DCI is used to instruct the terminal device to feed back the UCI corresponding to the historical downlink transmission, wherein the UCI corresponding to the historical downlink transmission is not fed back or the feedback fails.

UCI is the ACK / NACK corresponding to the second PDSCH group.

Optionally, the DCI includes a HARQ-ACK indication field of the second PDSCH group, where the HARQ-ACK indication field of the second PDSCH group is used to instruct the terminal device to send an ACK / corresponding to the second PDSCH group on the first PUCCH / NACK and ACK / NACK corresponding to the first PDSCH group.

Optionally, the second PDSCH group includes at least one PDSCH group;

Optionally, the network-side device 800 further includes:

The first configuration module is configured to configure a preset number of bits for the terminal device through high-level signaling, where the preset number of bits is used to indicate that if the number of ACK / NACK bits corresponding to the second PDSCH group is greater than the preset number of bits, the terminal The device performs bit number binding on the ACK / NACK corresponding to the second PDSCH group according to a preset number of bits, obtains the bound ACK / NACK corresponding to the second PDSCH group, and sends the second PDSCH group corresponding on the first PUCCH ACK / NACK after binding and ACK / NACK corresponding to the first PDSCH group;

The preset number of bits indicates the maximum number of transmission bits of the ACK / NACK corresponding to the second PDSCH group.

Optionally, the preset information corresponding to the DCI conforms to a preset sending rule.

The CORESET corresponding to the PDCCH carrying DCI is the target CORESET;

The CCE corresponding to the PDCCH carrying DCI is the target CCE;

The ARI in DCI is the target ARI;

TPC in DCI is the target TPC;

The CRC in DCI is the target CRC.

UCI is the target aperiodic CSI report without feedback or feedback failure;

The first preset sending time is earlier than the receiving time of the DCI.

Optionally, the DCI includes an indication field for triggering target aperiodic CSI report reporting, wherein the indication field for triggering target aperiodic CSI report reporting is used to instruct the terminal device to send the target aperiodic CSI report at a second preset sending time.

Optionally, the network-side device 800 further includes:

The second configuration module is configured to configure a preset valid duration for the terminal device through high-level signaling, where the preset valid duration is used to indicate that if a time difference between the first preset sending time and the receiving time of the DCI is not greater than the preset valid time The duration, or if the time difference between the second preset sending time and the first preset sending time is not greater than the preset valid duration, the terminal device sends the target aperiodic CSI report.

The network-side device 800 provided in the embodiment of the present disclosure can implement the processes implemented by the network-side device in the method embodiment in FIG. 6. To avoid repetition, details are not described herein again.

FIG. 9 is another schematic structural diagram of a terminal device according to an embodiment of the present disclosure. The terminal device 900 shown in FIG. 9 includes: at least one processor 901, a memory 902, at least one network interface 904, and a user interface 903. The various components in the terminal device 900 are coupled together via a bus system 905. It can be understood that the bus system 905 is used to implement connection and communication between these components. The bus system 905 includes a power bus, a control bus, and a status signal bus in addition to the data bus. However, for the sake of clarity, various buses are marked as the bus system 905 in FIG. 9.

The user interface 903 may include a display, a keyboard, or a pointing device (for example, a mouse, a trackball, a touchpad, or a touch screen).

It can be understood that the memory 902 in the embodiment of the present disclosure may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory. Among them, the non-volatile memory may be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), and an electronic memory. Erase programmable read-only memory (EPROM, EEPROM) or flash memory. The volatile memory may be Random Access Memory (RAM), which is used as an external cache. By way of example but not limitation, many forms of RAM are available, such as Static Random Access Memory (SRAM), Dynamic Random Access Memory (DRAM), Synchronous Dynamic Random Access Memory (Synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (Double Data Rate SDRAM, DDRSDRAM), enhanced synchronous dynamic random access memory (Enhanced SDRAM, ESDRAM), synchronous connection dynamic random access memory (Synch link DRAM, SLDRAM ) And direct memory bus random access memory (Direct Rambus RAM, DRRAM). The memory 902 of the systems and methods described in embodiments of the present disclosure is intended to include, but is not limited to, these and any other suitable types of memory.

In some implementations, the memory 902 stores the following elements, executable modules or data structures, or a subset of them, or their extended set: an operating system 9021 and an application program 9022.

Among them, the operating system 9021 includes various system programs, such as a framework layer, a core library layer, and a driver layer, etc., for implementing various basic services and processing hardware-based tasks. The application program 9022 includes various application programs, such as a media player (Player), a browser (Browser), and the like, and is used to implement various application services. A program for implementing the method of the embodiment of the present disclosure may be contained in the application program 9022.

In the embodiment of the present disclosure, the terminal device 900 further includes: a computer program stored on the memory 902 and executable on the processor 901. When the computer program is executed by the processor 901, the following steps are implemented:

Receive DCI, where DCI is used to instruct the terminal device to feedback UCI corresponding to historical downlink transmission, wherein UCI corresponding to historical downlink transmission is not feedback or feedback fails; UCI is sent.

The methods disclosed in the foregoing embodiments of the present disclosure may be applied to the processor 901, or implemented by the processor 901. The processor 901 may be an integrated circuit chip and has a signal processing capability. In the implementation process, each step of the above method may be completed by using hardware integrated logic circuits or instructions in the form of software in the processor 901. The above-mentioned processor 901 may be a general-purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (Field Programmable Gate Array, FPGA), or other Programmable logic devices, discrete gate or transistor logic devices, discrete hardware components. Various methods, steps, and logical block diagrams disclosed in the embodiments of the present disclosure may be implemented or executed. A general-purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in combination with the embodiments of the present disclosure may be directly embodied as completion of execution by a hardware decoding processor, or may be performed by using a combination of hardware and software modules in the decoding processor. The software module may be located in a mature computer-readable storage medium such as a random access memory, a flash memory, a read-only memory, a programmable read-only memory, or an electrically erasable programmable memory, a register, and the like in the art. The computer-readable storage medium is located in the memory 902, and the processor 901 reads the information in the memory 902 and completes the steps of the foregoing method in combination with its hardware. Specifically, a computer program is stored on the computer-readable storage medium, and when the computer program is executed by the processor 901, each step of the method embodiment in FIG. 2 is implemented.

It can be understood that the embodiments described in the embodiments of the present disclosure may be implemented by hardware, software, firmware, middleware, microcode, or a combination thereof. For hardware implementation, the processing unit can be implemented in one or more Application Specific Integrated Circuits (ASICs), Digital Signal Processors (DSPs), Digital Signal Processing Devices (DSPD), programmable Programmable Logic Device (PLD), Field-Programmable Gate Array (FPGA), general purpose processor, controller, microcontroller, microprocessor, other for performing functions described in this disclosure Electronic unit or combination thereof.

For software implementation, the technology described in the embodiments of the present disclosure may be implemented by modules (for example, procedures, functions, etc.) that perform the functions described in the embodiments of the present disclosure. Software codes may be stored in a memory and executed by a processor. The memory may be implemented in the processor or external to the processor.

The terminal device 900 can implement the processes implemented by the terminal device in the foregoing method embodiment in FIG. 2. To avoid repetition, details are not described herein again.

An embodiment of the present disclosure also provides a computer-readable storage medium. A computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, each process of the method embodiment in FIG. 2 is implemented, and the same Technical effects. To avoid repetition, we will not repeat them here. The computer-readable storage medium is, for example, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

FIG. 10 is another schematic structural diagram of a network-side device according to an embodiment of the present disclosure. The network-side device 1000 shown in FIG. 10 can implement the details of the method embodiment of FIG. 6 and achieve the same effect. As shown in FIG. 10, the network-side device 1000 includes: a processor 1001, a transceiver 1002, a memory 1003, a user interface 1004, and a bus interface, where:

In the embodiment of the present disclosure, the network-side device 1000 further includes: a computer program stored in the memory 1003 and executable on the processor 1001. When the computer program is executed by the processor 1001, the following steps are implemented:

A DCI is sent, where the DCI is used to instruct the terminal device to feed back the UCI corresponding to the historical downlink transmission, wherein the UCI corresponding to the historical downlink transmission is not fed back or the feedback fails.

In FIG. 10, the bus architecture may include any number of interconnected buses and bridges, and one or more processors specifically represented by the processor 1001 and various circuits of the memory represented by the memory 1003 are linked together. The bus architecture can also link various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art, so they are not described further herein. The bus interface provides an interface. The transceiver 1002 may be a plurality of elements, including a transmitter and a receiver, providing a unit for communicating with various other devices on a transmission medium. For different user equipments, the user interface 1004 may also be an interface capable of externally connecting internally required equipment, and the connected equipment includes, but is not limited to, a keypad, a display, a speaker, a microphone, a joystick, and the like.

The processor 1001 is responsible for managing the bus architecture and general processing, and the memory 1003 can store data used by the processor 1001 when performing operations.

The network-side device 1000 can implement the processes implemented by the network-side device in the foregoing method embodiment in FIG. 6. To avoid repetition, details are not described herein again.

An embodiment of the present disclosure further provides a computer-readable storage medium. A computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, each process of the method embodiment in FIG. 6 is implemented, and the same Technical effects. To avoid repetition, we will not repeat them here. The computer-readable storage medium is, for example, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

It should be noted that, in this article, the terms "including", "including" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, It also includes other elements not explicitly listed, or elements inherent to such a process, method, article, or device. Without more restrictions, an element limited by the sentence "including a ..." does not exclude that there are other identical elements in the process, method, article, or device that includes the element.

Through the description of the above embodiments, those skilled in the art can clearly understand that the methods in the above embodiments can be implemented by means of software plus a necessary universal hardware platform, and of course, also by hardware, but in many cases the former is better. Implementation. Based on such an understanding, the technical solution of the present disclosure that is essentially or contributes to related technologies can be embodied in the form of a software product, which is stored in a storage medium (such as ROM / RAM, magnetic disk, and optical disk) ) Includes several instructions for causing a terminal (which may be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) to execute the methods described in the embodiments of the present disclosure.

The embodiments of the present disclosure have been described above with reference to the accompanying drawings, but the present disclosure is not limited to the specific implementations described above, and the specific implementations described above are only schematic and not restrictive. Those of ordinary skill in the art at Under the inspiration of this disclosure, many forms can be made without departing from the scope of the present disclosure and the scope of protection of the claims, all of which fall into the protection of this disclosure.

Claims

A method for sending uplink control information, which is applied to a terminal device, includes:

Receiving downlink control information DCI, where the DCI is used to instruct the terminal device to feed back uplink control information UCI corresponding to historical downlink transmission, wherein the UCI corresponding to the historical downlink transmission is not feedback or feedback fails;

The UCI is sent.
The method according to claim 1, wherein the DCI is used to schedule a first physical downlink shared channel PDSCH group, wherein the first PDSCH group is a PDSCH set associated with a first physical uplink control channel PUCCH;

The historical downlink transmission is a second PDSCH group, where the second PDSCH group is a PDSCH set associated with a second PUCCH, and the sending time of the second PUCCH is earlier than the sending time of the first PUCCH;

The UCI is acknowledgement response information ACK / negative response information NACK corresponding to the second PDSCH group.
The method of claim 2, wherein sending the UCI comprises:

If the DCI includes the HARQ-ACK indication field of the hybrid automatic repeat request confirmation information of the second PDSCH group, sending, on the first PUCCH, the ACK / NACK corresponding to the second PDSCH group and the ACK / NACK corresponding to the first PDSCH group.
The method of claim 3, wherein the second PDSCH group includes at least one PDSCH group;

The DCI includes multiple HARQ-ACK indication fields, and different HARQ-ACK indication fields correspond to different PDSCH groups in the second PDSCH group.
The method of claim 2, wherein sending the UCI comprises:

If the preset information corresponding to the DCI complies with a preset sending rule, sending an ACK / NACK corresponding to the second PDSCH group and an ACK / NACK corresponding to the first PDSCH group on the first PUCCH.
The method according to claim 5, wherein the preset information corresponding to the DCI complies with a preset sending rule, including one of the following:

The control resource set CORESET corresponding to the physical downlink control channel PDCCH carrying the DCI is the target CORESET;

The search space search space corresponding to the PDCCH carrying the DCI is the target search space;

A control information unit CCE corresponding to the PDCCH carrying the DCI is a target CCE;

The ACK / NACK resource index ARI in the DCI is the target ARI;

The transmission power control TPC in the DCI is a target TPC;

The cyclic redundancy check CRC in the DCI is a target CRC.
The method according to claim 3 or 5, wherein sending, on the first PUCCH, an ACK / NACK corresponding to the second PDSCH group and an ACK / NACK corresponding to the first PDSCH group comprises:

If the number of bits of the ACK / NACK corresponding to the second PDSCH group is greater than a preset number of bits, according to the preset number of bits, bit number binding is performed on the ACK / NACK corresponding to the second PDSCH group to obtain The post-bundling ACK / NACK corresponding to the second PDSCH group, wherein the preset number of bits indicates a maximum number of transmission bits of the ACK / NACK corresponding to the second PDSCH group;

Sending, on the first PUCCH, a post-binding ACK / NACK corresponding to the second PDSCH group and an ACK / NACK corresponding to the first PDSCH group.
The method according to claim 1, wherein the historical downlink transmission is used to trigger the terminal device to feedback a target aperiodic channel state information CSI report at a first preset sending time;

The UCI is the target aperiodic CSI report that has not been feedback or has failed to feedback;

The first preset sending time is earlier than the receiving time of the DCI.
The method of claim 8, wherein sending the UCI comprises:

If the DCI includes an indication field that triggers the reporting of the target aperiodic CSI report, sending the target aperiodic CSI report at a second preset sending time indicated by the DCI.
The method according to claim 9, wherein sending the target aperiodic CSI report at a second preset sending time indicated by the DCI comprises:

If the time difference between the first preset sending time and the receiving time of the DCI is not greater than a preset valid duration, or if the second preset sending time and the first preset sending time If the time difference between the two is not greater than the preset effective duration, the target aperiodic CSI report is sent at the second preset sending time.
A method for sending uplink control information, which is applied to a network-side device, includes:

A DCI is sent, where the DCI is used to instruct the terminal device to feedback the UCI corresponding to the historical downlink transmission, and the UCI corresponding to the historical downlink transmission is not fed back or the feedback fails.
The method according to claim 11, wherein the DCI is used to schedule a first PDSCH group, wherein the first PDSCH group is a PDSCH set associated with a first PUCCH;

The historical downlink transmission is a second PDSCH group, where the second PDSCH group is a PDSCH set associated with a second PUCCH, and the sending time of the second PUCCH is earlier than the sending time of the first PUCCH;

The UCI is an ACK / NACK corresponding to the second PDSCH group.
The method according to claim 12, wherein the DCI includes a HARQ-ACK indication field of the second PDSCH group, and wherein the HARQ-ACK indication field of the second PDSCH group is used to indicate the terminal device Sending an ACK / NACK corresponding to the second PDSCH group on the first PUCCH.
The method according to claim 13, wherein the second PDSCH group includes at least one PDSCH group;

The DCI includes multiple HARQ-ACK indication fields, and different HARQ-ACK indication fields correspond to different PDSCH groups in the second PDSCH group.
The method of claim 12, further comprising:

Configure a preset number of bits for the terminal device through high-level signaling, where the preset number of bits is used to indicate that if the number of ACK / NACK bits corresponding to the second PDSCH group is greater than the preset number of bits, The terminal device performs bit number binding on the ACK / NACK corresponding to the second PDSCH group according to the preset number of bits, to obtain the post-binding ACK / NACK corresponding to the second PDSCH group, and Sending, on the first PUCCH, the post-binding ACK / NACK corresponding to the second PDSCH group and the ACK / NACK corresponding to the first PDSCH group;

The preset number of bits indicates a maximum number of ACK / NACK transmission bits corresponding to the second PDSCH group.
The method according to claim 11, wherein the preset information corresponding to the DCI complies with a preset sending rule.
The method according to claim 16, wherein the preset information corresponding to the DCI complies with a preset sending rule, including one of the following:

The CORESET corresponding to the PDCCH carrying the DCI is the target CORESET;

The search space corresponding to the PDCCH carrying the DCI is the target search space;

A CCE corresponding to the PDCCH carrying the DCI is a target CCE;

The ARI in the DCI is a target ARI;

The TPC in the DCI is a target TPC;

The CRC in the DCI is a target CRC.
The method according to claim 11, wherein the historical downlink transmission is used to trigger the terminal device to feedback a target aperiodic CSI report at a first preset sending time;

The UCI is the target aperiodic CSI report that has not been feedback or has failed to feedback;

The first preset sending time is earlier than the receiving time of the DCI.
The method of claim 18, wherein the DCI includes an indication field that triggers the reporting of the target aperiodic CSI report, and wherein the indication field that triggers the reporting of the target aperiodic CSI report is used to indicate the The terminal device sends the target aperiodic CSI report at a second preset sending time.
The method of claim 19, further comprising:

Configure a preset valid duration for the terminal device through high-level signaling, where the preset valid duration is used to indicate that if a time difference between the first preset sending time and the receiving time of the DCI is not greater than The preset valid duration, or if the time difference between the second preset sending time and the first preset sending time is not greater than the preset valid duration, the terminal device is in the second Sending the target aperiodic CSI report at a preset sending time.
A terminal device includes:

A receiving module for receiving DCI, wherein the DCI is used to instruct the terminal device to feed back UCI corresponding to historical downlink transmission, wherein the UCI corresponding to the historical downlink transmission is not feedback or feedback fails;

A sending module, configured to send the UCI.
A terminal device includes: a memory, a processor, and a computer program stored on the memory and executable on the processor. The computer program is implemented in claims 1 to 10 when executed by the processor. Steps of the method for sending uplink control information according to any one.
A computer-readable storage medium stores a computer program that, when executed by a processor, implements the steps of the method for sending uplink control information according to any one of claims 1 to 10.
A network-side device includes:

A sending module is configured to send a DCI, where the DCI is used to instruct a terminal device to feedback a UCI corresponding to historical downlink transmission, wherein the UCI corresponding to the historical downlink transmission is not feedback or feedback fails.
A network-side device includes: a memory, a processor, and a computer program stored on the memory and executable on the processor. When the computer program is executed by the processor, claims 11 to 20 are implemented. The steps of the method for sending uplink control information according to any one of the preceding claims.
A computer-readable storage medium stores a computer program that, when executed by a processor, implements the steps of the uplink control information sending method according to any one of claims 11 to 20.