WO2022151599A1 - Feedback information sending method and apparatus, and feedback information receiving method and apparatus - Google Patents

Abstract

Embodiments of the present application relate to the technical field of communications, and the present application provides a feedback information sending method and apparatus, and a feedback information receiving method and apparatus. By means of the method provided in the embodiments of the present application, when a first uplink resource for transmitting first feedback information comprises a downlink symbol or a flexible symbol configured for downlink transmission, the first feedback information is switched onto a second uplink resource of a target carrier for sending, such that the feedback delay is reduced and the reliability is improved.

Description

Feedback information sending method, feedback information receiving method and device

This application claims the priority of the PCT patent application submitted to the State Intellectual Property Office on January 15, 2021, the application number is PCT/CN2021/072322, and the application name is "feedback information sending method, feedback information receiving method and device", which The entire contents of this application are incorporated by reference.

technical field

The present application relates to the field of communications, and in particular, to a method for sending feedback information, a method and apparatus for receiving feedback information.

Background technique

Hybrid automatic repeat request (HARQ) is a combination of forward error correction (forward error correction, EFC) technology and automatic repeat request (automatic repeat request, ARQ) technology, used for error control, Thereby, a communication method that ensures communication quality.

Take the receiving end as a user equipment (user equipment, UE) and the sending end as a network device as an example. The network device may indicate a time unit and a physical uplink control channel (PUCCH) resource for sending feedback information. Specifically, the network device may send downlink control information (downlink control information, DCI) to the terminal device, and the DCI includes time slot offset and resource indication information. The terminal device may determine the PUCCH resource from the PUCCH resource set on the primary cell or the PUCCH cell according to the time slot offset and the resource indication information.

However, in a carrier aggregation (CA) scenario, each cell has a corresponding carrier. In a cell group (cell group, CG), in addition to the primary cell that can be used to send feedback information, a PUCCH cell can also be configured. The primary cell may be used to transmit feedback information on the primary cell, and may also be used to transmit feedback information of other cells in the CG. The PUCCH cell may be used to transmit feedback information on the PUCCH cell, and may also be used to transmit feedback information of other cells in the CG. Wherein, all cells that transmit feedback information through the primary cell form one PUCCH group, and all cells that transmit feedback information through the PUCCH cells form another PUCCH group. If the PUCCH resource used for transmitting feedback information on the primary cell or the PUCCH cell is unavailable, such as the PUCCH resource has been configured to transmit downlink symbols, or there is a flexible symbol configured for downlink transmission on the PUCCH resource, the PUCCH resource cannot be used. It is used to transmit feedback information, causing the network device to instruct to send the feedback information on the resource after the PUCCH resource, thereby increasing the feedback delay, or not sending the feedback information, resulting in low communication reliability.

SUMMARY OF THE INVENTION

The embodiments of the present application provide a method for sending feedback information, a method and apparatus for receiving feedback information, which can send feedback information on cells other than PCell or PUCCH SCell according to the conditions of PUCCH resources configured on PCell or PUCCH SCell, thereby Reduce feedback delay and improve communication reliability.

To achieve the above object, the application adopts the following technical solutions:

In a first aspect, a method for sending feedback information is provided, and the method for sending feedback information can be applied to a terminal device. The method for sending feedback information may include: the terminal device determines the first uplink resource on the first carrier. The first uplink resource is used to carry the first feedback information of the downlink data channel. If the time-domain symbols occupied by the first uplink resources include downlink symbols, and/or the time-domain symbols occupied by the first uplink resources are configured as flexible symbols for downlink transmission, the terminal device is on the second uplink resource of the target carrier. Send first feedback information. The target carrier is different from the first carrier, the target carrier is one of multiple candidate carriers, the time domain symbols occupied by the second uplink resources are uplink symbols, and/or are not configured as flexible symbols for downlink transmission.

Based on the feedback information sending method provided in the first aspect, when the first uplink resource cannot be used to transmit feedback information, it is possible to switch to a carrier other than the first carrier to transmit feedback information, so that feedback information can be transmitted in time, thereby reducing the feedback time. extension. By switching the carrier to transmit the feedback information, the feedback information can be transmitted on the carrier with uplink resources, thereby improving the reliability of communication.

In addition, by switching the carrier to transmit the feedback information, the feedback information can be transmitted on a non-designated carrier, which can improve the flexibility of transmitting the feedback information, reduce the number of times the network device retransmits the same data, thereby improving the efficiency, reducing resource overhead and power consumption.

In a possible design, the terminal device receives the first indication information. The first indication information indicates the mapping relationship between the slot index of the first carrier and the target carrier index. In this way, the target carrier can be determined according to the mapping relationship, and the calculation process of determining the target carrier can be reduced, thereby simplifying the operation and further reducing the feedback delay.

In a possible design, the target carrier may be the carrier with the smallest absolute value of the difference between the subcarrier spacings of the first carrier and the multiple candidate carriers.

In a possible design, determining the first uplink resource on the first carrier includes: determining a first time unit according to timing indication information and timing configuration information, where the first time unit is a time unit on the first carrier, and the timing unit is The configuration information is used to configure a timing relationship set, the timing relationship set includes at least one timing relationship, and each timing relationship in the timing relationship set is used to determine: the time unit where the downlink data channel on the first carrier is located, and the time unit used for sending downlink data. The timing relationship between the time units of the feedback information corresponding to the data channel, and the timing indication information is used to indicate: a timing relationship in the timing relationship set configured by the timing configuration information. The first uplink resource on the first carrier is determined in the first time unit according to the first resource indication information and the second resource configuration information. The second resource configuration information is used to indicate an uplink resource set on the first carrier. The first resource indication information is used to indicate: uplink resources in the uplink resource set indicated by the resource configuration information on the first carrier.

Optionally, the terminal device determines the second uplink resource according to the first resource configuration information and the first resource indication information. The first resource configuration information is used to indicate an uplink resource set of the target carrier, and the first resource indication information indicates an uplink resource in the uplink resource set that is used to carry the first feedback information. In this way, when the target carrier has the first resource configuration information, the second uplink resource can be determined from the target carrier to carry the first feedback information, and the target carrier can be selected according to the resource configuration to ensure that there are enough resources on the target carrier. Uplink resources carry feedback information, thereby further improving transmission reliability and efficiency.

Optionally, the second uplink resource and the first uplink resource have the same starting position in the time domain, and the second uplink resource and the first uplink resource have the same starting position in the frequency domain. In this way, when the target carrier does not have PUCCH resource configuration information, the second uplink resource can be determined from the target carrier to carry the first feedback information, and the target carrier can be selected according to the resource configuration to ensure that there are enough resources on the target carrier. Uplink resources carry feedback information, thereby further improving transmission reliability and efficiency.

In a possible design, if the first feedback information and the second feedback information are fed back in the same time unit of the target carrier, or if the third uplink resource on the target carrier and the fourth uplink resource on the target carrier are in the time domain The method for sending feedback information provided by the first aspect may further include: the terminal device determines, according to the first resource configuration information and the second resource indication information, the second uplink resource to be used for carrying the first feedback information and the second feedback information . The third uplink resource is used to carry the first feedback information, and the fourth uplink resource is used to carry the second feedback information. The first resource configuration information is used to indicate an uplink resource set of the target carrier, and the second resource indication information indicates an uplink resource in the uplink resource set that is used to carry the second feedback information.

In a possible design, the terminal device determines, among the multiple candidate carriers, the carrier that has the scheduled uplink data channel in the first time unit as the target carrier. The terminal device sends the first feedback information on the second uplink resource of the target carrier through the uplink data channel.

In a possible design, the time domain positions of the time unit where the first uplink resource is located and the time domain location where the second uplink resource is located overlap.

The time unit where the first uplink resource is located is the first time unit, and the first time unit corresponds to a plurality of second time units on the target carrier; the time unit where the second uplink resource is located is the target time unit, and the target time unit is a plurality of first time units. One of two time units.

Optionally, the target time unit is a second time unit with the highest time domain among the plurality of second time units, the second time unit includes a candidate uplink resource, and the second uplink resource is a candidate uplink resource in the target time unit. The second time unit satisfies the following conditions: the number of time domain symbols spaced between the time domain start symbol of the candidate uplink resource of the second time unit and the time domain end symbol of the downlink data channel is greater than the first threshold, and the first threshold It is related to the processing capability of the terminal device; and, the time domain symbols occupied by the second uplink resources are uplink symbols, and/or are not configured as flexible symbols for downlink transmission; wherein, the candidate uplink resources are indicated by the first resource indication information , the resources in the first resource configuration information; the first resource configuration information is used to indicate the uplink resource set of the target carrier, and the first resource indication information indicates the uplink resources in the uplink resource set used to carry the first feedback information.

In a possible design, the second uplink resource is located at the first time domain location, and the number of time domain symbols spaced between the time domain location where the downlink data channel is located and the first time domain location satisfies the processing capability of the terminal device. In other words, the number of time domain symbols spaced between the time domain end symbol of the downlink data channel and the time domain start symbol of the second uplink resource is greater than the first threshold, which is related to the processing capability of the terminal device.

In a possible design, the terminal device receives the second indication information. Wherein, the second indication information indicates: if the time domain symbols occupied by the first uplink resources include downlink symbols, and/or are configured as flexible symbols for downlink transmission, the target carrier is determined among the multiple candidate carriers. Or, the second indication information indicates: if the time domain symbols occupied by the first uplink resources include downlink symbols, and/or are configured as flexible symbols for downlink transmission, the first feedback information is not sent. In this way, the terminal device can select whether to switch the carrier or whether to send the feedback information according to the second indication information, so as to further improve the flexibility of sending the feedback information.

In a second aspect, a method for receiving feedback information is provided, and the method for receiving feedback information can be applied to a network device. The method for receiving feedback information may include: determining a first uplink resource on a first carrier. The first uplink resource is used to carry the first feedback information of the downlink data channel. If the time-domain symbols occupied by the first uplink resources include downlink symbols, and/or the time-domain symbols occupied by the first uplink resources are configured as flexible symbols for downlink transmission, the network device on the second uplink resource of the target carrier Receive first feedback information. The target carrier is different from the first carrier, the target carrier is one of multiple candidate carriers, the time domain symbols occupied by the second uplink resources are uplink symbols, and/or are not configured as flexible symbols for downlink transmission.

In a possible design, the method for receiving feedback information provided by the second aspect may further include: the network device sends the first indication information. Wherein, the first indication information indicates the mapping relationship between the time slot index of the first carrier and the target carrier index.

In a possible design, the target carrier may be the carrier with the smallest absolute value of the difference between the subcarrier spacings of the first carrier and the multiple candidate carriers.

In a possible design, the method for receiving feedback information provided by the second aspect may further include: the network device determining the second uplink resource according to the first resource configuration information and the first resource indication information. The first resource configuration information is used to indicate an uplink resource set of the target carrier, and the first resource indication information indicates an uplink resource in the uplink resource set that is used to carry the first feedback information.

In a possible design, the second uplink resource and the first uplink resource have the same starting position in the time domain, and the second uplink resource and the first uplink resource have the same starting position in the frequency domain.

Further, the time unit where the first uplink resource is located is the first time unit, and the first time unit is the same as the time unit corresponding to the timing relationship indicated by the timing indication information in the timing configuration information; the timing configuration information is used to configure a timing relationship set. , the timing relationship set includes at least one timing relationship, and each timing relationship in the timing relationship set is used to determine: the time unit where the downlink data channel on the first carrier is located, and the feedback corresponding to the first carrier for sending the downlink data channel The timing relationship between the time units of the information; the timing indication information is used to indicate: a timing relationship in the timing relationship set configured by the timing configuration information. The first uplink resource is consistent with the resource indicated by the first resource indication information in the uplink resource set on the first carrier; the first resource indication information is used to indicate that: in the uplink resource set indicated by the resource configuration information on the first carrier upstream resources.

In a possible design, if the first feedback information and the second feedback information are fed back in the same time unit of the target carrier, or if the third uplink resource on the target carrier and the fourth uplink resource on the target carrier are in the time domain If the above overlaps, the method for receiving feedback information provided in the second aspect may further include: the network device determining, according to the first resource configuration information and the second resource indication information, the second uplink resource to be used for carrying the first feedback information and the second feedback information . The third uplink resource is used to carry the first feedback information, and the fourth uplink resource is used to carry the second feedback information. The first resource configuration information is used to indicate an uplink resource set of the target carrier, and the second resource indication information indicates an uplink resource in the uplink resource set that is used to carry the second feedback information.

In a possible design, the time unit where the first uplink resource is located is the first time unit, and the method for receiving feedback information provided in the second aspect may further include: the network device assigns the multiple candidate carriers that exist in the first time unit to The carrier of the scheduled uplink data channel is determined as the target carrier. Correspondingly, the network device receiving the first feedback information on the second uplink resource of the target carrier includes: the network device receiving the first feedback information through the uplink data channel on the second uplink resource of the target carrier.

In a possible design, the time domain positions of the time unit where the first uplink resource is located and the time domain location where the second uplink resource is located overlap.

In a possible design, the time unit where the first uplink resource is located is the first time unit, and the first time unit corresponds to multiple second time units on the target carrier; the time unit where the second uplink resource is located is the target time unit, The target time unit is one of the plurality of second time units.

Exemplarily, the subcarrier spacing of the target carrier is greater than the subcarrier spacing of the first carrier.

Optionally, the target time unit is a second time unit with the highest time domain among the plurality of second time units, the second time unit includes a candidate uplink resource, and the second uplink resource is a candidate uplink resource in the target time unit. The second time unit satisfies the following conditions: the number of time domain symbols spaced between the time domain start symbol of the candidate uplink resource of the second time unit and the time domain end symbol of the downlink data channel is greater than the first threshold, and the first threshold It is related to the processing capability of the terminal device; and, the time domain symbols occupied by the second uplink resources are uplink symbols, and/or are not configured as flexible symbols for downlink transmission. The candidate uplink resources are resources in the first resource configuration information indicated by the first resource indication information; the first resource configuration information is used to indicate the uplink resource set of the target carrier, and the first resource indication information indicates that the uplink resource set uses for the uplink resource carrying the first feedback information.

In a possible design, the second uplink resource is located at the first time domain location, and the number of time domain symbols spaced between the time domain location where the downlink data channel is located and the first time domain location satisfies the processing capability of the terminal device.

Optionally, the time domain starting position of the second uplink resource may be: the time domain symbol with the most forward time domain position in the first time domain symbol. The first time-domain symbol is a time-domain symbol satisfying the processing capability of the terminal device.

In a possible design, the method for receiving feedback information provided by the second aspect may further include: the network device sending second indication information. Wherein, the second indication information indicates: if the time domain symbols occupied by the first uplink resources include downlink symbols, and/or are configured as flexible symbols for downlink transmission, the target carrier is determined among the multiple candidate carriers. Or, the second indication information indicates: if the time domain symbols occupied by the first uplink resources include downlink symbols, and/or are configured as flexible symbols for downlink transmission, the first feedback information is not received.

In addition, for the technical effect of the feedback information receiving method described in the second aspect, reference may be made to the technical effect of the feedback information sending method described in the first aspect, which will not be repeated here.

In a third aspect, a communication apparatus is provided, including a module for performing the method described in any one of the implementation manners of the first aspect.

In a fourth aspect, a communication apparatus is provided, including a module for performing the method described in any one of the implementation manners of the second aspect.

In a fifth aspect, a communication device is provided. The communication apparatus includes: a processor coupled to the memory, the processor is configured to execute a computer program stored in the memory, so that the communication apparatus executes the method described in any possible implementation manner of the first aspect.

In a sixth aspect, a communication device is provided. The communication apparatus includes: a processor coupled to the memory, the processor is configured to execute a computer program stored in the memory, so that the communication apparatus executes the method described in any one of the possible implementations of the second aspect.

In a seventh aspect, a communication device is provided, comprising a processor and an interface circuit, wherein the interface circuit is configured to receive signals from other devices other than the communication device and transmit to the processor or send signals from the processor to outside the communication device For other devices, the processor is used to implement the method described in any possible implementation manner of the first aspect through logic circuits or executing code instructions.

In an eighth aspect, a communication device is provided, comprising a processor and an interface circuit, wherein the interface circuit is configured to receive signals from other devices other than the communication device and transmit to the processor or send signals from the processor to the outside of the communication device For other devices, the processor is used to implement the method described in any one of the possible implementation manners of the second aspect through logic circuits or executing code instructions.

In a ninth aspect, a communication device is provided, including a processor and a transceiver, the transceiver is used for information interaction between the communication device and other devices, and the processor executes program instructions to execute the first aspect. Any one of the possible implementations of the method described.

A tenth aspect provides a communication device, including a processor and a transceiver, the transceiver is used for information interaction between the communication device and other devices, and the processor executes program instructions to execute the second aspect. Any one of the possible implementations of the method described.

In an eleventh aspect, a computer-readable storage medium is provided, comprising: a computer program or instruction; when the computer program or instruction is run on a computer, the computer is made to perform any one of the first aspect or the second aspect. implement the method described.

A twelfth aspect provides a computer program product, including a computer program or instructions, which, when the computer program or instructions are run on a computer, cause the computer to execute any one of the possible implementations of the first aspect or the second aspect. method described.

A thirteenth aspect provides a communication system, including the communication device described in any one of the third aspect, the fifth aspect, the seventh aspect, and the ninth aspect, as well as the fourth aspect, the sixth aspect, the eighth aspect, The communication device of any one of the tenth aspect.

Description of drawings

1 is a schematic diagram of a PUCCH group provided by an embodiment of the present application;

FIG. 2 is a schematic structural diagram of a communication system provided by an embodiment of the present application;

3 is a schematic flowchart of a method for sending and receiving feedback information according to an embodiment of the present application;

4 is a schematic diagram of a positional relationship between a first uplink resource and a time slot;

5 is a schematic diagram of the relationship between a target carrier and a time unit provided by an embodiment of the present application;

FIG. 6 is a schematic diagram of the relationship of the subcarrier spacing between each carrier;

7 is a schematic diagram of the relationship between a target carrier and an uplink data channel;

Fig. 8 is the distribution schematic diagram of BWP;

9 is a schematic diagram of the location of candidate uplink resources;

10 is a schematic diagram of resource configuration of a first carrier and a second carrier;

11 is a schematic diagram 1 of the time-domain symbol relationship between the first carrier and the target carrier;

12 is a schematic diagram 2 of the time-domain symbol relationship between the first carrier and the target carrier;

13 is a schematic diagram of a time domain location of a second uplink resource;

FIG. 14 is a schematic diagram 1 of the time-frequency position of the second uplink resource;

15 is a second schematic diagram of the time-frequency position of the second uplink resource;

16 is a schematic diagram of the relationship between resources and carriers that carry different feedback information;

17 is a schematic diagram 1 of the relationship between the third uplink resource and the fourth uplink resource;

18 is a second schematic diagram of the relationship between the third uplink resource and the fourth uplink resource;

FIG. 19 is a schematic structural diagram 1 of a communication device provided by an embodiment of the present application;

FIG. 20 is a second schematic structural diagram of a communication apparatus provided by an embodiment of the present application.

Detailed ways

The following first introduces the technical terms of the embodiments of the present application.

1. Feedback information: After receiving the data sent by the network device, such as the data sent by the network device through the physical downlink shared channel (PDSCH), the terminal device can send feedback information to the network device. The feedback information is used to indicate whether the data is decoded successfully. For example, if the data is successfully decoded, the feedback information is an acknowledgement (ACK). If the data decoding fails, the feedback information is a negative acknowledgement (NACK). In the HARQ mechanism, ACK and NACK are collectively referred to as HARQ-ACK information.

2. Time domain symbol (symbol), which can also be referred to as symbol. In the embodiments of the present application, the time-domain symbols may be orthogonal frequency division multiplexing (orthogonal frequency division multiplexing, OFDM) symbols, or may be discrete Fourier transform-spread-OFDM (discrete fourier transform-spread-OFDM, DFT- s-OFDM) symbols. Unless otherwise specified, the symbols in the embodiments of the present application all refer to time-domain symbols.

3. Time slot (slot): In this embodiment of the present application, the number of OFDM symbols included in a time slot is 14 or 12, and the symbol numbers thereof may be 0 to 13 or 0 to 11. where, in the time domain, these symbols are continuous.

4. Time unit: A time unit may include one or more time slots, or one or more time domain symbols. Under different sub-carrier spacing (SCS), the time length of a time slot is different. The larger the subcarrier spacing is, the smaller the time length of the time slot; the smaller the subcarrier spacing is, the larger the time length of the time slot.

The relationship between the subcarrier spacing and the time slot is shown in Table 1. The following description is combined with Table 1. For example, if the subcarrier spacing is 15 kilohertz (kilohertz, kHz), the length of one time slot is 1 millisecond (millisecond, ms). If the subcarrier spacing is 30kHZ, the length of one time slot is 0.5ms. If the subcarrier spacing is 60kHZ, the length of one time slot is 0.25ms. All in all, the subcarrier spacing of carrier a is 2 ^u of the subcarrier spacing of carrier b, the time slot length of carrier a is 1/2 ^u of the time slot length of carrier b, and u is an integer greater than or equal to 0. For ease of understanding, in the following embodiments, one time unit includes one time slot as an example for description.

Table 1

SCS	time slot
15kHZ	1ms
30kHZ	0.5ms
60kHZ	0.25ms

5. Cell group, MCG, SCG, PCell, SCell, PUCCH SCell, PUCCH group.

A cell group (CG) refers to a collection of multiple cells (cells) managed by the same network device and communicating with the same terminal device.

In the dual connectivity (DC) technology, the CG can be further divided into a primary cell group (master cell group, MCG) and a secondary cell group (secondary cell group, SCG).

In the MCG, the cell used to initiate initial access is called a primary cell (PCell), and other cells other than the primary cell are called a secondary cell (secondary cell, SCell). Similarly, in the SCG, the cell used for initiating initial access is called a primary secondary cell (PSCell), and other cells other than the primary and secondary cells are called secondary cells. The PUCCH resource may be configured on the PCell of the MCG, and the PUCCH resource may also be configured on the SCell. A PUCCH resource can be configured on the PSCell of the SCG, and a PUCCH resource can also be configured on the SCell. On the MCG or SCG, the SCell configured with PUCCH resources is called a PUCCH SCell.

One or more PUCCH cells may be configured in the same CG for transmitting feedback information. For example, in an MCG, a cell configured with PUCCH resources may include one or more of the following: PCell, or an SCell configured with PUCCH resources. For another example, in an SCG, a cell configured with PUCCH resources may include one or more of the following: PSCell, or SCell configured with PUCCH resources. Exemplarily, a cell configured with PUCCH resources, such as a PCell or a PUCCH SCell, may transmit feedback information of the cell configured with PUCCH resources, and may also transmit feedback information of one or more other SCells.

A PUCCH cell and an SCell that sends feedback information on the PUCCH cell are called a PUCCH group. FIG. 1 is a schematic diagram of a PUCCH group. As shown in FIG. 1 , taking the MCG as an example, the MCG includes one PCell, one PUCCH SCell and multiple SCells (SCell1-SCell4). If the PUCCH group 1 includes: SCell1, SCell2 and PCell, the feedback information of PCell, SCell1 and SCell2 is transmitted on PCell. Specifically, if PDSCH0 is located in time slot 2n of PCell, PDSCH1 is located in time slot 2n+1 of SCell1, and PDSCH2 is located in time slot 2(n+1) of SCell2, the K1 values corresponding to PDSCH0, PDSCH1 and PDSCH2 in turn are: 3, 2, 1. The K1 set of PUCCH group 1 is {1, 2, 3}, then the feedback information of PDSCH0, PDSCH1 and PDSCH2 are all transmitted on time slot 2(n+1)+1 of PCell. If PUCCH group 2 includes: SCell3, SCell4 and PUCCH SCell, the respective feedback information of PUCCH SCell, SCell3 and SCell4 is transmitted on PUCCH SCell. Specifically, if PDSCH3 is located in time slot 2n+1 of PUCCH SCell, PDSCH4 is located in time slot 2(n+1) of SCell3, and PDSCH5 is located in time slot 2n+1 of SCell4, the K1 value corresponding to PDSCH3, PDSCH4 and PDSCH5 in turn is: 1 , 1, 1, then the K1 set of PUCCH group 2 is {1, 2}, the feedback information of PDSCH3 and PDSCH5 is transmitted on 2(n+1) of PUCCH SCell, and the feedback information of PDSCH4 is in time slot 2 of PUCCH SCell (n+1)+1 transmission.

It should be noted that, in this embodiment of the present application, the working bandwidth of each cell may include one or more bandwidth parts (bandwidth parts, BWP). In the following embodiments, unless otherwise specified, the resources on one carrier may be resources corresponding to one or more bandwidth parts in one cell.

The technical solutions in the present application will be described below with reference to the accompanying drawings.

The technical solutions in the embodiments of the present application can be applied to various communication systems, for example, a 4th generation (4G) mobile communication system, such as a long term evolution (LTE) system, a worldwide interoperability for microwave access, WiMAX) communication system, fifth generation (5th generation, 5G) mobile communication system, such as new radio (new radio, NR) system, and future communication system, such as sixth generation (6th generation, 6G) mobile communication system, etc.

This application will present various aspects, embodiments, or features around a system that may include a plurality of devices, components, modules, and the like. It is to be understood and appreciated that the various systems may include additional devices, components, modules, etc., and/or may not include all of the devices, components, modules, etc. discussed in connection with the figures. In addition, combinations of these schemes can also be used.

In addition, in the embodiments of the present application, words such as "exemplarily" and "for example" are used to represent examples, illustrations or illustrations. Any embodiment or design described in this application as "exemplary" should not be construed as preferred or advantageous over other embodiments or designs. Rather, the use of the word example is intended to present a concept in a concrete way.

In the embodiments of the present application, "information", "signal", "message", "channel", and "signaling" may sometimes be used interchangeably. It should be noted that, When not emphasizing their differences, their intended meanings are the same. "of", "corresponding, relevant" and "corresponding" can sometimes be used interchangeably. It should be pointed out that when the difference is not emphasized, the meanings they intend to express are the same.

In the embodiments of the present application, sometimes _a subscript such as W1 may be mistakenly written in a non-subscript form such as W1. When the difference is not emphasized, the meaning to be expressed is the same.

The network architecture and service scenarios described in the embodiments of the present application are for the purpose of illustrating the technical solutions of the embodiments of the present application more clearly, and do not constitute a limitation on the technical solutions provided by the embodiments of the present application. The evolution of the architecture and the emergence of new business scenarios, the technical solutions provided in the embodiments of the present application are also applicable to similar technical problems.

FIG. 2 is a schematic diagram of an architecture 100 of a communication system to which an embodiment of the present application is applied. As shown in FIG. 2 , the communication system includes a network device 110 and a core network 120. Optionally, the communication system 100 may further include the Internet 130. The network device 110 may include at least one wireless access network device (eg, 111a and 111b in FIG. 2 ), and may also include at least one terminal device (eg, 112a-112j in FIG. 2 ). The terminal device is wirelessly connected to the wireless access network device, and the wireless access network device is wirelessly or wiredly connected to the core network. The core network device and the radio access network device can be independent and different physical devices, or the functions of the core network device and the logical functions of the radio access network device can be integrated on the same physical device, or they can be one physical device. It integrates the functions of some core network equipment and some functions of the wireless access network equipment. Terminal devices and terminal devices and between wireless access network devices and wireless access network devices may be connected to each other in a wired or wireless manner. FIG. 2 is only a schematic diagram, and the communication system may also include other network devices, such as wireless relay devices and wireless backhaul devices, which are not shown in FIG. 2 .

The radio access network equipment can be a base station (base station), an evolved base station (evolved NodeB, eNodeB), a transmission reception point (transmission reception point, TRP), the next generation in the fifth generation (5th generation, 5G) mobile communication system Base station (next generation NodeB, gNB), the next generation base station in the sixth generation (6th generation, 6G) mobile communication system, the base station in the future mobile communication system or the access node in the WiFi system, etc.; it can also complete the base station part A functional module or unit, for example, may be a centralized unit (central unit, CU) or a distributed unit (distributed unit, DU). The radio access network device may be a macro base station (111a in FIG. 2), a micro base station or an indoor station (111b in FIG. 2), or a relay node or a donor node. The embodiments of the present application do not limit the specific technology and specific device form adopted by the wireless access network device. For the convenience of description, the following description takes a base station as an example of a radio access network device.

A terminal device may also be referred to as a terminal, user equipment (UE), a mobile station, a mobile terminal, and the like. Terminal devices can be widely used in various scenarios, such as device-to-device (D2D), vehicle-to-everything (V2X) communication, machine-type communication (MTC), IoT (internet of things, IOT), virtual reality, augmented reality, industrial control, autonomous driving, telemedicine, smart grid, smart furniture, smart office, smart wear, smart transportation, smart city, etc. Terminal devices can be mobile phones, tablet computers, computers with wireless transceiver functions, wearable devices, vehicles, drones, helicopters, airplanes, ships, robots, robotic arms, smart home devices, etc. The embodiments of the present application do not limit the specific technology and specific device form adopted by the terminal device.

Base stations and terminal devices can be fixed or mobile. Base stations and terminal equipment can be deployed on land, including indoor or outdoor, handheld or vehicle; can also be deployed on water; can also be deployed in the air on aircraft, balloons and satellites. The embodiments of the present application do not limit the application scenarios of the base station and the terminal device.

The roles of base stations and end devices may be relative, for example, helicopter or drone 112i in FIG. 2 may be configured as a mobile base station, for those end devices 112j that access network device 110 through 112i, end device 112i It is a base station; but for the base station 111a, 112i is a terminal device, that is, communication between 111a and 112i is performed through a wireless air interface protocol. Of course, communication between 111a and 112i may also be performed through an interface protocol between the base station and the base station. In this case, compared to 111a, 112i is also a base station. Therefore, both the base station and the terminal equipment may be collectively referred to as communication apparatuses, 111a and 111b in FIG. 2 may be referred to as communication apparatuses with base station functions, and 112a-112j in FIG. 2 may be referred to as communication apparatuses with terminal equipment functions.

Communication between base stations and terminal equipment, between base stations and base stations, and between terminal equipment and terminal equipment can be carried out through licensed spectrum, unlicensed spectrum, or both licensed spectrum and unlicensed spectrum at the same time; Communication is performed through a spectrum below 6 GHz (gigahertz, GHz), communication can also be performed through a spectrum above 6 GHz, and communication can be performed using a spectrum below 6 GHz and a spectrum above 6 GHz at the same time. The embodiments of the present application do not limit the spectrum resources used for wireless communication.

In the embodiment of the present application, the function of the base station may also be performed by a module (eg, a chip) in the base station, or may be performed by a control subsystem including the function of the base station. The control subsystem including the base station function here may be the control center in the application scenarios of the above-mentioned terminal equipment such as smart grid, industrial control, intelligent transportation, and smart city. The functions of the terminal equipment can also be performed by a module (such as a chip or a modem) in the terminal equipment, and can also be performed by a device including the functions of the terminal equipment.

In this application, the base station sends downlink signals or downlink information to the terminal equipment, and the downlink information is carried on the downlink channel; the terminal equipment sends uplink signals or uplink information to the base station, and the uplink information is carried on the uplink channel. In order to communicate with a base station, a terminal device needs to establish a wireless connection with a cell controlled by the base station. The cell that has established a wireless connection with the terminal equipment is called the serving cell of the terminal equipment. When the terminal equipment communicates with the serving cell, it will also be interfered by signals from neighboring cells.

In the embodiments of the present application, the time domain symbols may be orthogonal frequency division multiplexing (orthogonal frequency division multiplexing, OFDM) symbols, or may be discrete Fourier transform spread spectrum OFDM (Discrete Fourier Transform-spread-OFDM, DFT) symbols -s-OFDM) symbols. Unless otherwise specified, the symbols in the embodiments of the present application all refer to time-domain symbols.

It can be understood that, in the embodiments of this application, PDSCH and PUSCH are only used as examples of downlink data channels and uplink data channels. In different systems and different scenarios, data channels and control channels may have different names. The embodiments of the application do not limit this.

The methods for sending and receiving feedback information provided by the embodiments of the present application will be described in detail below with reference to FIG. 3 to FIG. 13 .

Exemplarily, FIG. 3 is a schematic flowchart of a method for sending and receiving feedback information according to an embodiment of the present application. The method for sending and receiving feedback information can be applied to the communication between the terminal device and the network device shown in FIG. 2 .

As shown in Figure 3, the method for sending and receiving feedback information includes the following steps:

S301, a terminal device determines a first uplink resource on a first carrier. Correspondingly, the network device may also determine the first uplink resource on the first carrier.

Exemplarily, the first carrier may be a carrier or cell in the PUCCH group for sending feedback information, such as PCell or PUCCH SCell. For example, in PUCCH group 1 shown in FIG. 1 , the first carrier corresponding to PDSCH0, PDSCH1 and PDSCH2 is PCell. In PUCCH group 2 shown in FIG. 1 , the first carrier corresponding to PDSCH3, PDSCH4 and PDSCH5 is PUCCH SCell.

The first uplink resource is used to carry the first feedback information of the downlink data channel.

Exemplarily, in step S301, determining the first uplink resource on the first carrier may include: determining the first time unit according to timing configuration information and timing indication information. Then, the first uplink resource is determined in the first time unit of the first carrier according to the first resource indication information and the resource configuration information of the first carrier (the following second resource configuration information).

The timing configuration information is used to configure a timing relationship set, the timing relationship set includes at least one timing relationship, and each timing relationship in the timing relationship set defines a time unit where the downlink data channel on the first carrier is located, and is used for The timing relationship between the time units for sending the HARQ feedback information corresponding to the downlink data channel. The timing indication information is used to indicate a timing relationship in the timing relationship set configured by the timing configuration information. The timing relationship may be the number of time units in the interval between the time unit where the first uplink resource is located and the time unit where the downlink data channel is located. For example, the timing configuration information is the dl-DataToUL-ACK information element in the radio resource control (radio resource control, RRC) signaling, and the timing indication information is the timing indication (PDSCH-to- HARQ_feedback timing indicator) field.

The resource configuration information of the first carrier is used to indicate an uplink resource set on the first carrier. The first resource indication information is used to indicate uplink resources in the uplink resource set indicated by the resource configuration information of the first carrier.

It should be noted that, in this embodiment of the present application, the set of timing relationships configured by the timing configuration information may be referred to as the K1 set, and the timing indication information may be mapped to a time slot offset, and the time slot offset may be a set of K1 sets. A value, which can be represented by K1. Step S301 will be described in detail below.

It should be noted that when the network device determines the first uplink resource on the first carrier, it can also directly determine the first uplink resource, and the first uplink resource determined by the network device and the first uplink resource determined by the terminal device may be consistent. of. Unless otherwise specified below, the time slot offset or the K1 value refers to the value of the time slot indication information mapped to the K1 set.

In a possible design, in step S301, determining the first uplink resource on the first carrier may include: determining the first uplink resource according to the DCI corresponding to the PDSCH and resource configuration information of the first carrier. The DCI includes a time slot offset K1 and a physical uplink control channel resource indicator (PUCCH resource indicator, PRI). The time slot offset K1 is used to indicate: the offset of the time unit where the first feedback information is sent relative to the time unit where the PDSCH is located. In this application, a time unit may be a slot or a subslot. The PRI is used to indicate: the PUCCH resource used for sending the first feedback information in the PUCCH resource set. Specifically, the time slot where the first uplink resource is located may be determined according to the time domain position of the PDSCH and the time slot offset K1. The first uplink resource is located in the K1th time slot after the time slot where the PDSCH is located. The PUCCH resource set in the time slot where the first uplink resource is located is determined according to the size of the first feedback information and the resource configuration information of the first carrier. Then, the first uplink resource is determined from the PUCCH resource set according to the PRI. The following description is made with reference to FIG. 4 .

FIG. 4 is a schematic diagram showing the positional relationship between the first uplink resource and the time slot. As shown in FIG. 4, PUCCH group 1 includes: carrier CC0, carrier CC1 and carrier CC2. The carrier CC0 corresponds to a cell configured with PUCCH resources, such as PCell. The PUCCH group 2 includes: carrier CC3, carrier CC4 and carrier CC5. The carrier CC3 corresponds to a cell configured with PUCCH resources, such as a PUCCH SCell. The K1 set (set) of PUCCH group 1 is {1, 2, 3}, and the K1 set of PUCCH group 2 is {1, 2}. If PDSCH0 is located on time slot 2n of carrier CC0, the value of K1 corresponding to PDSCH0 is 3, and the first uplink resource PUCCH10 corresponding to PDSCH0 is located on time slot 2(n+1)+1 of carrier CC0. If the PUCCH resource set of carrier CC0 includes PUCCH resources corresponding to resource index 1 to resource index 10, and the resource index indicated by the PRI corresponding to PDSCH0 is 3, the first uplink resource is the PUCCH resource corresponding to resource index 3. In other words, the first uplink resource is the resource at the time-frequency position where the resource index 3 is located.

Similarly, if PDSCH1 is located on time slot 2n+1 of carrier CC1, and the value of K1 corresponding to PDSCH1 is 2, then the first uplink resource PUCCH11 (not shown in FIG. 4 ) corresponding to PDSCH1 is located in time slot 2 (n) of carrier CC0. +1) +1 on. If PDSCH2 is located on time slot 2 (n+1) of carrier CC2, and the value of K1 corresponding to PDSCH2 is 1, then the first uplink resource PUCCH12 (not shown in FIG. 4 ) corresponding to PDSCH2 is located in time slot 2 (n+1) of carrier CC0 +1) +1 on. If PDSCH3 is located on time slot 2n+1 of carrier CC3, and the value of K1 corresponding to PDSCH3 is 1, the feedback information corresponding to PDSCH3 is sent on time slot 2(n+1) of carrier CC3, in other words, the first uplink corresponding to PDSCH3 Resource PUCCH13 is located on slot 2(n+1) of carrier CC3. If PDSCH4 is located on time slot 2(n+1) of carrier CC4, and the value of K1 corresponding to PDSCH4 is 1, the feedback information corresponding to PDSCH4 is sent on time slot 2(n+1)+1 of carrier CC3, in other words, PDSCH4 The corresponding first uplink resource PUCCH14 is located on time slot 2(n+1)+1 of carrier CC3. If PDSCH5 is located on time slot 2n+1 of carrier CC5, and the value of K1 corresponding to PDSCH5 is 1, the feedback information corresponding to PDSCH5 is sent on time slot 2(n+1) of carrier CC3. In other words, the first uplink resource PUCCH15 (not shown in FIG. 4 ) corresponding to the PDSCH5 is located on the time slot 2(n+1) of the carrier CC3.

In the embodiment of the present application, for the implementation of determining the first uplink resource corresponding to any one of PDSCH1-PDSCH5, reference may be made to the implementation manner of determining the first uplink resource of PDSCH0, which will not be repeated here.

S302: If the time domain symbols occupied by the first uplink resources include downlink symbols and/or are configured as flexible symbols for downlink transmission, the terminal device sends the first feedback information on the second uplink resources of the target carrier. Correspondingly, the network device receives the first feedback information on the second uplink resource of the target carrier. Here, the downlink symbol or the flexible symbol configured for downlink transmission may be understood as a symbol that cannot be used for uplink transmission.

The target carrier is different from the first carrier, the target carrier is one of multiple candidate carriers, the time domain symbols occupied by the second uplink resources are uplink symbols, and/or are not configured as flexible symbols for downlink transmission.

Exemplarily, any one or more of the time domain symbols occupied by the first uplink resource is any one of the following items: downlink symbols, or flexible symbols configured for downlink transmission.

The downlink symbol may be a time domain symbol configured by the DCI for uplink transmission. The flexible symbols configured for downlink transmission may be flexible symbols configured for downlink transmission by time slot format indication information or DCI.

The candidate carriers may include other carriers except the first carrier in the PUCCH group where the first carrier is located. The candidate carriers may also include carriers in other PUCCH groups in the CG where the first carrier is located, such as carriers corresponding to PCell or carriers corresponding to PUCCH SCells. It can be understood that, in this embodiment of the present application, the first carrier in one PUCCH group may also be a candidate carrier of another PUCCH group. The following is still described with reference to FIG. 4 .

As shown in FIG. 4 , taking any one of PDSCH0, PDSCH1 or PDSCH2 as an example, if carrier CC0 is the first carrier, the candidate carrier may include one or more of the following: carrier CC1, carrier CC2 and carrier CC3. Taking any one of PDSCH3, PDSCH4 or PDSCH5 as an example, if carrier CC3 is the first carrier, the candidate carrier may include one or more of the following: carrier CC0, carrier CC4 and carrier CC5.

The target carrier may be selected from candidate carriers when the time domain symbols occupied by the first uplink resources include downlink symbols, and/or are configured as flexible symbols for downlink transmission, and are used to carry the first feedback information carrier.

Exemplarily, the target carrier may be selected according to one or more of the following conditions: the mapping relationship between the slot index and the target carrier index, the subcarrier spacing, the physical uplink shared channel (PUSCH), or other feedback information. The selection process of the target carrier is described below with reference to an example.

Manner 1: The target carrier is determined based on the mapping relationship between the slot index of the first carrier and the target carrier index.

FIG. 5 is a schematic diagram of a relationship between a target carrier and a time slot according to an embodiment of the present application. As shown in FIG. 5 , the subcarrier intervals of the carrier CC0, the carrier CC1 and the carrier CC2 are all 30 kHz, and the time slot lengths of the respective carriers are the same. As shown in Table 1, the mapping relationship between the time slot index of the first carrier and the target carrier index is as follows: time slot 2n corresponds to carrier CC1, time slot 2n+1 corresponds to carrier CC3, and time slot 2(n+1) corresponds to Carrier CC1, time slot 2(n+1)+1 corresponds to carrier CC0.

Table 2

slot index		time slot 2n	time slot 2n+1	Slot 2(n+1)	Slot 2(n+1)+1
target carrier index	CC1	CC3	CC1	CC0

If the value of K1 corresponding to PDSCH0 is 1, the first uplink resource PUCCH0 corresponding to PDSCH0 is located in time slot 2n+1 of carrier CC0. Since the carrier index corresponding to time slot 2n+1 of carrier CC0 is "CC3", the target carrier corresponding to PDSCH0 is carrier CC3. Similarly, the value of K1 corresponding to PDSCH1 is 1, and the first uplink resource PUCCH11 corresponding to PDSCH1 is located in time slot 2(n+1) of carrier CC0. Since the index of the target carrier corresponding to time slot 2(n+1) is "CC1", the target carrier corresponding to PDSCH1 is carrier CC1.

Specifically, the method for sending and receiving feedback information provided in FIG. 3 may further include: the network device sends the first indication information to the terminal device. Correspondingly, the terminal device receives the first indication information. Wherein, the first indication information indicates the mapping relationship between the time slot index and the target carrier index.

The terminal device may determine the target carrier according to the first indication information. Correspondingly, the network device may determine the target carrier according to the first indication information. For an implementation manner of determining the target carrier according to the first indication information, reference may be made to the implementation manner of the foregoing manner 1, and details are not described herein again.

In this way, the target carrier can be determined according to the mapping relationship between the time slot index and the target carrier index, and the calculation process of determining the target carrier can be reduced, thereby simplifying the operation and further reducing the feedback delay.

In a second manner, the target carrier is determined based on the subcarrier spacing.

Optionally, the target carrier may be the carrier with the smallest absolute value of the difference between the subcarrier spacing of the first carrier and the plurality of candidate carriers. That is, the subcarrier spacing of the target carrier satisfies one or more of the following conditions:

|Δfo-Δfg|=min(|Δfo-Δfi|), or,

|Δμo−Δμg|=min(|Δμo−Δμj|).

Among them, Δfo is the subcarrier spacing of the first carrier, Δfg is the subcarrier spacing of the target carrier, Δfi is the subcarrier spacing of the ith carrier in the candidate carrier, i is a positive integer; μo is the subcarrier spacing configuration of the first carrier , μg is the subcarrier spacing configuration of the target carrier, μj is the subcarrier spacing configuration of the jth carrier in the multiple candidate carriers, and j is a positive integer. The following description is made with reference to FIG. 6 .

FIG. 6 is a schematic diagram showing the relationship between the subcarrier spacings between the respective carriers. As shown in FIG. 6 , the PUCCH group includes: carrier CC0, carrier CC1, carrier CC6 and carrier CC7. The sub-carrier spacing of carrier CC0 and the sub-carrier spacing of carrier CC1 are 30 kHz, the sub-carrier spacing of carrier CC6 is 60 kHz, and the sub-carrier spacing of carrier CC7 is 15 kHz. PDSCH0 is located on time slot 2n of carrier CC0. If the value of K1 corresponding to PDSCH0 is 2, then time slot 2 (n+1) on carrier CC0 is used to carry the feedback information of PDSCH0. In other words, the first uplink resource PUCCH10 corresponding to PDSCH0 On slot 2(n+1)+1 on carrier CC0. Time slot 2(n+1) of carrier CC1, time slot 4(n+1) of carrier CC6, time slot 4(n+1)+1 of carrier CC6 and time slot n+1 of carrier CC7 are all uplink time gap. If time slot 2(n+1) on carrier CC0 is a downlink time slot, the target carrier may be carrier CC1.

The uplink time slot is a time slot that can be used to transmit feedback information, and the time domain symbols of the uplink time slot may include one or more of the following: uplink symbols, unconfigured flexible symbols, or flexible symbols configured for uplink transmission.

Downlink time slots are time slots that are not available for transmitting feedback information. For example, a downlink time slot may include one or more of the following: downlink symbols, or flexible symbols configured for downlink transmission.

In this way, the candidate carrier with the closest subcarrier spacing to the first carrier may be selected as the target carrier. For example, a candidate carrier with the same subcarrier interval as the first carrier may be selected as the target carrier, so that the conversion operation of the carrier index can be simplified, and the feedback delay can be further reduced.

Manner 3: Determine the target carrier based on the PUSCH.

Specifically, the time unit where the first uplink resource is located is the first time unit, and the method for sending and receiving feedback information provided in FIG. 3 may further include: the terminal device assigns, among the multiple candidate carriers, the scheduled ones in the first time unit The carrier of the uplink data channel is determined as the target carrier. Correspondingly, the network device determines, among the multiple candidate carriers, the carrier that has the scheduled uplink data channel in the first time unit as the target carrier.

Still taking the PUCCH group shown in FIG. 6 as an example, if the time slot 2(n+1) of the carrier CC2 is configured with a PUSCH, the carrier CC2 is the target carrier. For another example, as shown in FIG. 7 , the subcarrier intervals of the carrier CC0 to the carrier CC3 are equal. The value of K1 of PDSCH2 is 1, and the first uplink resource PUCCH12 corresponding to PDSCH2 is located in time slot 2(n+1)+1 of carrier CC0. Time slot 2(n+1)+1 of carrier CC0 is a downlink time slot and no feedback information can be sent. Time slot 2(n+1)+1 of carrier CC1 and time slot 2(n+1)+1 of carrier CC2 Both are uplink time slots. If the carrier CC1 has a scheduled PUSCH on slot 2(n+1)+1, the target carrier is the carrier CC1.

Manner 4: Determine the target carrier based on other feedback information.

As shown in FIG. 6 , if there is other feedback information on the time slot n+1 of the carrier CC7, the carrier CC7 is the target carrier.

Manner 5: Determine the target carrier based on various conditions.

(1) Exemplarily, the target carrier may be determined according to the mapping relationship between the slot index and the target carrier index, the subcarrier spacing, the PUSCH, or the respective priorities of other feedback information. As shown in FIG. 6 , if the conditions for determining the target carrier include: other feedback information and subcarrier spacing, and the priority of other feedback information is higher than that of the subcarrier spacing, the target carrier is CC7.

(2) Exemplarily, candidate carriers that satisfy multiple conditions at the same time may also be determined as target carriers. For example, various conditions include: the subcarrier spacing of the candidate carrier is the same as the subcarrier spacing of the first carrier, and the time slot of the candidate carrier corresponding to the time slot where the first feedback information is located is configured with PUSCH. As shown in FIG. 6 , the time slot 2(n+1) of the carrier CC2 is configured with PUSCH. If the priority of the PUSCH is higher than the priority of the subcarrier interval, the carrier CC2 is the target carrier. For another example, the various conditions also include the priority of the carrier. If PUSCH is configured on time slot 2(n+1) of carrier CC1 and time slot 2(n+1) of carrier CC2, the priority corresponding to carrier CC2 is higher than the priority corresponding to carrier CC1, then carrier CC2 is the target carrier.

For another example, the target carrier may be determined according to the subcarrier spacing and the carrier index of the carrier. If there are two or more candidate carriers with the closest subcarrier spacing to the first carrier, the target carrier is the one with the smallest carrier index among the candidate carriers closest to the subcarriers of the first carrier.

In the embodiments of the present application, the listed conditions for selecting the target carrier are only used as examples, and the conditions for determining the target carrier are not specifically limited. It can be understood that, in a specific implementation manner, the target carrier may also be determined according to other conditions, or the target carrier may be determined according to other combinations of conditions, which will not be repeated in this embodiment of the present application.

In this way, according to the carrier index of each candidate carrier, the priority of each candidate carrier, or the PUSCH configuration of the time slot where the first uplink resource is located, the target carrier is determined from the candidate carriers with the closest subcarrier spacing to simplify the operation and improve the efficiency.

In this embodiment of the present application, the first carrier and the candidate carrier may be different BWPs in the same cell, and the cell may be PCell or SCell. For example, the first carrier is BWP1 on PCell, and the candidate carrier is BWP2 on PCell.

It can be understood that the first carrier or candidate carrier may be a part of the frequency resources already configured in the cell, such as different BWPs of the same cell or different subbands (subbands) of the same BWP. The BWP may be a part of the frequency resources that have been configured in the cell, and the frequency resources occupied by the sub-bands may be a part of the frequency resources of one BWP. The following description is made with reference to FIG. 8 .

FIG. 8 is a schematic diagram of the distribution of BWP. As shown in Figure 8, if the BWP of a cell includes BWP1-BWP4, and BWP1 includes sub-band 1 and sub-band 2, the first carrier can be any BWP in BWP1-BWP4, and the candidate carrier can be BWP1-BWP4 except the first carrier BWP beyond one carrier. The target carrier may be a BWP other than the first carrier among BWP1-BWP4. Alternatively, the first carrier can be any one of the sub-bands of a BWP1, such as sub-band 1, the candidate carrier can be other sub-bands in BWP1 except the first carrier, such as sub-band 2, and the target carrier can be other sub-bands One of the frequency bands, such as subband 2.

It should be noted that, in this embodiment of the present application, different cells or different BWPs in the same cell, or different subbands in the same BWP in the same cell may have different time domain configurations. FIG. 10 is a schematic diagram of resource configuration of the first carrier and the second carrier. As shown in FIG. 10 , the time domain resource configuration of each time unit in carrier CC0 may be sequentially: downlink, downlink, uplink, and uplink, and the time domain resource configuration of each time unit in carrier CC1 may be sequentially: downlink, uplink , down, up.

It can be understood that, in this embodiment of the present application, the time unit may be a time slot, or a sub-slot (sub-slot), or an OFDM symbol.

It can be understood that the target carrier and the first carrier may belong to the same PUCCH group, or may belong to different PUCCH groups. The first carrier has corresponding PUCCH resource configuration information, and the target carrier may have corresponding PUCCH resource configuration information. The following description is based on the fact that the target carrier and the first carrier belong to the same PUCCH group in FIG. 9 .

FIG. 9 is a schematic diagram of configuration information corresponding to a first carrier and a target carrier. As shown in FIG. 9 , in PUCCH group 1, the first carrier is CC0, the target carrier is CC1, the subcarrier interval between the first carrier and the target carrier is the same, and the target carrier may have corresponding resource configuration information, such as the first resource configuration information . The first carrier has corresponding timing configuration information and resource configuration information (second resource configuration information). For example, the timing configuration information corresponding to the first carrier may be a K1 set, and the K1 set is a set {1, 2, 3}. The timing indication information may be a bit field indicating a timing relationship in the DCI of the scheduling PDSCH0, and the information may be mapped to a K1 value. For example, if the timing indication information is 00, the value mapped to the K1 set is 1, that is, the value of K1 is 1. The resource configuration information corresponding to the first carrier may be the second resource configuration information. In this way, according to the K1 set corresponding to the carrier CC0 and the K1 value mapped from the timing indication information in the DCI scheduling PDSCH0, it can be determined that the first time unit is the time unit corresponding to the time slot 2n+1 on the carrier CC0. According to the first resource indication information and the second resource configuration information, the first uplink resource PUCCH10 may be determined in a time unit corresponding to time slot 2n+1 on CC0. It can be understood that when the second uplink resource PUCCH20 is determined on the target carrier, it can also be obtained by mapping the first resource configuration information, the first resource indication information, the K1 set corresponding to the carrier CC1, and the timing indication information in the DCI for scheduling downlink data. The value of K1 determines the second uplink resource.

Exemplarily, each of the time domain symbols occupied by the second uplink resource is one of the following items: an uplink symbol, or a flexible symbol that is not configured for downlink transmission.

The flexible symbols that are not configured for downlink transmission include: flexible symbols that are not configured for uplink transmission, or flexible symbols that are configured for uplink transmission.

The uplink symbol may be a time domain symbol configured by the DCI for uplink transmission. The flexible symbols configured for uplink transmission may be flexible symbols configured for uplink transmission by time slot format indication information or DCI. The unconfigured flexible symbol may be a flexible symbol that is not configured for downlink transmission or uplink transmission without time slot format indication information or DCI.

In a possible design, the method for sending and receiving feedback information shown in FIG. 3 may further include: the terminal device determines the time unit where the second uplink resource is located. Correspondingly, the network device may also determine the time unit where the second uplink resource is located.

Exemplarily, if the subcarrier spacing of the first carrier and the target carrier is the same, and one time unit includes one time slot, the time slot index of the time slot where the second uplink resource is located is the same as the time slot index of the time slot where the first uplink resource is located. . For example, the subcarrier spacing of carrier CC0 and carrier CC2 shown in FIG. 6 are the same. If CC2 is the target carrier, the first uplink resource is on time slot 2(n+1) of carrier CC0, and the second uplink resource is on carrier CC2. on time slot 2(n+1).

Exemplarily, the time unit where the first uplink resource is located is the first time unit, and the first time unit may include multiple second time units on the target carrier. The time unit where the second uplink resource is located is the target time unit, and the target time unit may be one of multiple second time units. For example, if the subcarrier spacing of the target carrier is greater than the subcarrier spacing of the first carrier, or the number of time domain symbols occupied by the second time unit on the target carrier is smaller than the number of time domain symbols occupied by the first time unit on the first carrier, If the first time unit is a time slot and the second time unit is a sub-slot (sub-slot), the first time unit corresponds to a plurality of second time units.

The subcarrier spacing of the target carrier is greater than the subcarrier spacing of the first carrier, which can be a time unit of the target carrier and a time unit of the first carrier, and the number of time domain symbols included is the same, and each time domain symbol of the target carrier contains the same number of time domain symbols. The duration of time is less than the duration of each time-domain symbol of the first carrier. The following description is made with reference to FIG. 11 .

FIG. 11 is a schematic diagram 1 of the time-domain symbol relationship between the first carrier and the target carrier. As shown in FIG. 11 , the first carrier is carrier CC0, and the target carrier is carrier CC1. If a time unit contains 1 time slot, and 1 time slot contains 14 time domain symbols, such as time domain symbol 0-time domain symbol 13, the subcarrier spacing of the first carrier is 15kHz, and the subcarrier spacing of carrier CC1 is 30kHz , the duration of 1 time-domain symbol on carrier CC0 is half the time-domain duration of 1 time-domain symbol on carrier CC0, then 1 time slot on carrier CC0 corresponds to 2 time slots on carrier CC1, the first The time unit corresponds to a plurality of second time units.

The number of time-domain symbols occupied by the second time unit on the target carrier is smaller than the number of time-domain symbols occupied by the first time unit on the first carrier, and the subcarrier spacing of the target carrier may be the same as the subcarrier spacing of the first carrier. The number of time-domain symbols occupied by the first time unit on a carrier is the number of time-domain symbols of a time slot, and the number of time-domain symbols occupied by the second time unit on the target carrier is: the time-domain symbols occupied by a sub-slot number or a time domain symbol. The following description is made with reference to FIG. 12 .

FIG. 12 is a second schematic diagram showing the relationship between the time domain symbols of the first carrier and the target carrier. As shown in FIG. 12 , the first carrier is carrier CC0, and the target carrier is carrier CC1. The subcarrier spacing of carrier CC0 and the subcarrier spacing of carrier CC1 are both 15 kHz. The first time unit on carrier CC0 occupies 14 time-domain symbols (time-domain symbol 0-time-domain symbol 13), and the second time unit on carrier CC1 occupies 7 time-domain symbols (time-domain symbol 0-time-domain symbol 6, or Time domain symbol 7-time domain symbol 13), is 1 sub-slot. One first time unit on the carrier CC0 corresponds to two second time units on the carrier CC1.

It can be understood that, in this embodiment of the present application, the number of time domain symbols occupied by the subslots is not limited to 7 time domain symbols. For example, the number of time-domain symbols occupied by a sub-slot may be two. The second time unit is a sub-slot, so 14 time-domain symbols correspond to 7 sub-slots. At this time, one first time unit on the first carrier corresponds to seven second time units. Regarding the number of time domain symbols included in the time unit, reference may be made to an existing implementation manner of time domain symbols of subslots, and details are not described herein again.

It should be noted that, in this embodiment of the present application, the time domain symbol may be an OFDM symbol.

Specifically, if the subcarrier spacing of the target carrier is greater than the subcarrier spacing of the first carrier, the second uplink resource is one of the time slots of the target carrier corresponding to the time slot where the first uplink resource is located. For example, as shown in Figure 6, when the target carrier is carrier CC6, the subcarrier spacing of carrier CC6 is twice the subcarrier spacing of carrier CC0, and the time slot length of carrier CC6 is 1/2 of the time slot length of carrier CC0 . The first uplink resource is located on time slot 2(n+1) of carrier CC0, and the time slots corresponding to time slot 2(n+1) of carrier CC0 on carrier CC6 are: time slot 4(n+1) and time slot 4(n+1) 4(n+1)+1, therefore, the second uplink resource is located on time slot 4(n+1) of carrier CC6 or time slot 4(n+1)+1 of carrier CC6.

Optionally, the target time unit is the second time unit with the highest time domain among the plurality of second time units, the second time unit includes a candidate uplink resource, the second uplink resource is a candidate uplink resource in the target time unit, and the second time unit is a candidate uplink resource. The second time unit satisfies the following conditions 1 and 2:

Condition 1: The number of time-domain symbols spaced between the time-domain start symbol of the candidate uplink resource of the second time unit and the time-domain end symbol of the downlink data channel is greater than the first threshold, which is related to the processing capability of the terminal device .

Condition 2, in the second time unit, the time domain symbols occupied by the candidate uplink resources are uplink symbols, and/or are not configured as flexible symbols for downlink transmission.

The candidate uplink resources are the resources in the first resource configuration information indicated by the first resource indication information; the first resource configuration information is used to indicate the uplink resource set of the target carrier, and the first resource indication information indicates the uplink resource set The uplink resource used to carry the first feedback information in . The following describes how to determine candidate uplink resources in a second time unit.

Specifically, in the second time unit, the PUCCH resource set in the second time unit is determined according to the size of the first feedback information and the first resource configuration information. Then, according to the first resource indication information, a candidate uplink resource is determined in the PUCCH set determined in the second time unit. Regarding the implementation of the candidate uplink resources, reference may be made to the implementation manner of the first uplink resources.

The following describes how to determine a candidate uplink resource by taking the target carrier and the first carrier in the same PUCCH group as an example.

As shown in FIG. 6 , if the first carrier is carrier CC0, the target carrier is carrier CC6, carrier CC0 and carrier CC6 are located in the same PUCCH group, carrier CC6 has corresponding first resource configuration information, and the timing configuration information corresponding to carrier CC0 is The K1 set, such as the set {1, 2, 3}, the timing indication information in the DCI scheduling PDSCH0 takes the value 00, and is mapped to the K1 set, so that the K1 value is 1.

When determining the candidate uplink resources, first, according to the K1 value and the K1 set, it is determined that the first uplink resource PUCCH10 is located in the time unit corresponding to the time slot 2n+1 of the carrier CC0, that is to say, the first time unit is the time when the carrier CC0 The time unit corresponding to slot 2n+1. Next, a second time unit is determined according to the first time unit. The time unit corresponding to the first time unit on the carrier CC6 is the second time unit, and the second time unit is the time unit corresponding to the time slot 4n+2 and the time slot 4n+3 on the carrier CC6 respectively.

Then, according to the size of the first feedback information and the first resource configuration information, from the two second time units in CC6, determine the PUCCH resource set, and then determine each PUCCH resource set from the PUCCH resource set according to the first resource indication information. Candidate uplink resources in the second time unit. Wherein, for the implementation of respectively determining the candidate uplink resources in each second time unit from the PUCCH resource set according to the first resource indication information, reference may be made to the implementation of the first uplink resources, which will not be repeated here.

When the target carrier and the first carrier are located in different PUCCH groups, the implementation of determining the candidate uplink resources is similar to when the target carrier and the first carrier are located in the same PUCCH group, and details are not repeated here.

The second time unit satisfies the condition 1 and the condition 2 will be described below with reference to FIG. 6 .

As shown in Figure 6, if one time slot on the carrier corresponds to one time unit, time slot 2(n+1) on the carrier CC0 corresponds to the first time unit 2(n+1), and time slot 4(n+1) on the carrier CC6 ) and time slot 4(n+1)+1 correspond to the second time unit 4(n+1), the second time unit 4(n+1)+1 in turn, the first time unit 2(n+1) on the carrier CC0 1) The second time unit 4(n+1) and the second time unit 4(n+1)+1 corresponding to the carrier CC6. Candidate uplink resources exist on the second time unit 4(n+1) and 4(n+1)+1 respectively, and the terminal device receives the downlink data channel PDSCH0 on the time unit 2n on the carrier CC0.

Condition 1 may be that the number of time-domain symbols between the time-domain start symbol of the candidate uplink resource and the time-domain end symbol of the downlink data channel, such as the number of time-domain symbols corresponding to the subcarrier interval of the target carrier, needs to meet the requirements of the terminal equipment. Data processing capability on the target carrier. For example, on the second time unit 4(n+1), the time domain symbols occupied by the candidate uplink resources are time domain symbol 10-time domain symbol 11. On the first carrier, the time domain end symbol of the downlink data channel is the time domain symbol 10 on the time unit 2n, and the number of time domain symbols between the time domain start symbol of the candidate uplink resource and the time domain end symbol of the downlink data channel is 14. The processing capability of the terminal device needs to be met.

Condition 2 may be that each of the time domain symbols occupied by the candidate uplink resources is an uplink symbol or one of the flexible symbols not configured for downlink transmission. For example, the time-domain symbols occupied by the candidate uplink resources are time-domain symbol 10-time-domain symbol 11, then time-domain symbol 10 is an uplink symbol, and time-domain symbol 11 is a flexible symbol not configured for downlink transmission. Alternatively, the time-domain symbol 10 is a flexible symbol for downlink transmission, and the time-domain symbol 11 is not configured as an uplink symbol. Alternatively, the time-domain symbol 10 is an uplink symbol, and the time-domain symbol 11 is not configured as an uplink symbol. Alternatively, the time-domain symbol 10 is a flexible symbol for downlink transmission, and the time-domain symbol 11 is a flexible symbol that is not configured for downlink transmission.

It can be understood that, in this embodiment of the present application, if the candidate uplink resources of multiple time units all satisfy both condition 1 and condition 2, it can be determined that among the multiple second time units that satisfy both condition 1 and condition 2, the time domain The first second time unit is the time unit where the second uplink resource is located.

In this embodiment of the present application, the second time unit where the second uplink resource is located may also satisfy other conditions.

Or, optionally, the target time unit may be: among the plurality of second time units, a time unit whose time domain position is the last.

Still taking the first time unit 2(n+1) on the carrier CC0 in FIG. 6 corresponding to the second time unit 4(n+1) and the second time unit 4(n+1)+1 of the carrier CC6 as an example, then The time unit where the second uplink resource is located is the second time unit 4(n+1)+1.

Or, optionally, the target time unit may be: a time unit including the time domain end symbol of the first uplink resource.

Still taking the first time unit 2(n+1) on the carrier CC0 in FIG. 6 corresponding to the second time unit 4(n+1) and the second time unit 4(n+1)+1 of the carrier CC6 as an example, if The time domain end symbol of the first uplink resource on the carrier CC0 is the fifth time domain symbol in the first time unit, and the duration of the fifth time domain symbol in the first time unit is located in the second time unit 4 (n +1) within the duration of all time domain symbols, the target time unit includes the time domain end symbol of the first uplink resource, and the time unit where the second uplink resource is located is the second time unit 4(n+1).

Exemplarily, if the subcarrier spacing of the target carrier is smaller than the subcarrier spacing of the first carrier, the second uplink resource is: on the target carrier, the time domain position includes the time slot of the time domain position where the first uplink resource is located. For example, as shown in Figure 6, if the target carrier is carrier CC7, the subcarrier spacing of carrier CC7 is 1/2 of the subcarrier spacing of carrier CC0, and the time slot length of carrier CC7 is twice the time slot length of carrier CC0, The first uplink resource is located on the time slot 2(n+1) of the carrier CC0. Since the time slot 2(n+1) of the carrier CC0 includes the first seven time domain symbols of the time slot n+1 of the carrier CC7, therefore, The second uplink resource is located on time slot n+1 of carrier CC7.

In a possible design, the second uplink resource and the first uplink resource have the same starting position in the time domain, and the second uplink resource and the first uplink resource have the same starting position in the frequency domain.

FIG. 13 is a schematic diagram of the time domain location of the second uplink resource. As shown in FIG. 13 , taking the time domain starting positions of carrier CC0 and carrier CC1 with a subcarrier interval of 30 kHz as an example, the first uplink resource PUCCH10 and the time slot of carrier CC0 are determined according to the K1 value 3 corresponding to PDSCH0 and the corresponding PRI. 2(n+1)+1 is the downlink time slot, and the time slot 2(n+1)+1 of the carrier CC1 is the uplink time slot. If the time domain starting position of the first uplink resource PUCCH10 is the time domain position corresponding to time ts, the time domain starting position of the second uplink resource PUCCH20 corresponding to PDSCH0 is the time domain position corresponding to time ts on CC0. If the frequency domain starting position of the first uplink resource PUCCH10 is the frequency domain position corresponding to the fs frequency point, the frequency domain starting position of the second uplink resource PUCCH20 is the frequency domain position corresponding to the fs frequency point on CC1.

If the subcarrier intervals of the first carrier and the target carrier are the same, the time domain end position of the second uplink resource may also be the same as the time domain end position of the first uplink resource. In other words, the time domain position of the first uplink resource coincides with the time domain position of the second uplink resource.

As shown in the carrier shown in Figure 4 above, if the subcarrier spacing between carrier CC0 and carrier CC2 is 30 kHz, time slot 2(n+1)+1 of carrier CC0 is a downlink time slot, and time slot 2(n+1) of carrier CC2 is a downlink time slot. +1)+1 is an uplink time slot, then the second uplink resource PUCCH20 corresponding to PDSCH0 may be located in time slot 2(n+1)+1 of carrier CC2.

For another example, in the carrier shown in FIG. 5 above, if the subcarrier intervals of carrier CC0, carrier CC1 and carrier CC2 are all 30 kHz, the time slot 2n+1 of the carrier CC0 is a downlink time slot, and the time slot 2(n) of the carrier CC0 is a downlink time slot. +1) is the downlink time slot, the time slot 2(n+1) of the carrier CC1 is the uplink time slot, and the time slot 2n+1 of the carrier CC2 is the uplink time slot, then the second uplink resource PUCCH20 corresponding to PDSCH0 is located in the carrier CC2 In time slot 2n+1. Alternatively, the second uplink resource PUCCH21 corresponding to the PDSCH1 is located in the time slot 2(n+1) of the carrier CC2.

FIG. 14 is a schematic diagram 1 of the time-frequency position of the second uplink resource. As shown in FIG. 14 , a carrier CC0 with a subcarrier spacing of 30 kHz and a carrier CC1 with a subcarrier spacing of 30 kHz are used as examples. The first uplink resource PUCCH10 corresponding to PDSCH0 is located on the time slot 2(n+1) of the carrier CC0, the time slot 2(n+1) of the carrier CC0 is the downlink time slot, and the time slot 2(n+1) of the carrier CC1 For the uplink time slot, the second uplink resource PUCCH20 corresponding to the PDSCH0 may be located on the time slot 2(n+1) on the carrier CC1. If the first uplink resource PUCCH10 includes a resource block corresponding to subcarrier RE0 and time domain symbol 2-time domain symbol 7 on time slot 2(n+1) of carrier CC0, then the second uplink resource PUCCH20 includes the time slot of carrier CC1 On 2(n+1), the subcarrier RE0 is the resource block corresponding to the time-domain symbol 2-time-domain symbol 7. That is to say, if the resources corresponding to the subcarrier RE0 and the time-domain symbol 2-time-domain symbol 7 on the time slot 2(n+1) of the carrier CC0 are the feedback resources for transmitting feedback information, then the time slot 2(n+1) of the carrier CC1 +1) The resources corresponding to the upper subcarrier RE0 and the time-domain symbol 2-time-domain symbol 7 are feedback resources for transmitting feedback information.

FIG. 15 is a second schematic diagram of the time-frequency position of the second uplink resource. As shown in FIG. 15 , a carrier CC0 with a subcarrier spacing of 30 kHz and a carrier CC6 with a subcarrier spacing of 60 kHz are used as examples. The first uplink resource PUCCH10 corresponding to PDSCH0 is located on the time slot 2(n+1) of the carrier CC0, the time slot 2(n+1) of the carrier CC0 is the downlink time slot, and the time slot 4(n+1) of the carrier CC6 +1 is an uplink time slot, then the second uplink resource PUCCH20 corresponding to PDSCH0 may be located on time slot 4(n+1)+1 on carrier CC6. If the first uplink resource PUCCH10 includes a resource block corresponding to subcarrier RE0 and time domain symbol 2-time domain symbol 7 on time slot 2(n+1) of carrier CC0, then the second uplink resource PUCCH20 includes the time slot of carrier CC6 Resource blocks corresponding to subcarrier RE0 and time-domain symbol 2-time-domain symbol 7 on 4(n+1)+1, and resource blocks corresponding to sub-carrier RE1 and time-domain symbol 2-symbol 7. That is to say, if the resources corresponding to the subcarrier RE0 and the time-domain symbol 2-time-domain symbol 7 on the time slot 2(n+1) of the carrier CC0 are the feedback resources for transmitting feedback information, then the time slot 4(n+1) of the carrier CC6 +1) Resource blocks corresponding to subcarrier RE0 and time domain symbol 2-time domain symbol 7 on +1, and resource blocks corresponding to subcarrier RE1 and time domain symbol 2-symbol 7 are feedback resources for transmitting feedback information.

For example, if the duration required by the terminal device to process the PDSCH is the duration corresponding to x time domain symbols on the target carrier, then when the time domain start position of the first uplink resource is the same as the time domain start position of the second uplink resource, It can be ensured that the feedback information is sent after the last x-th time-domain symbol of the PDSCH.

In this way, the feedback information is transmitted after the time domain position of the first uplink resource, so that the resource for transmitting the feedback information can meet the processing capability requirement of the terminal device, thereby improving the transmission reliability.

In a possible design, the method for sending and receiving feedback information provided in FIG. 3 may further include: the terminal device determines the second uplink resource according to the first resource configuration information and the first resource indication information. Correspondingly, the network device determines the second uplink resource according to the first resource configuration information and the first resource indication information.

The first resource configuration information is used to indicate an uplink resource set of the target carrier, and the first resource indication information indicates an uplink resource in the uplink resource set that is used to carry the first feedback information. The following description is made with reference to FIG. 16 .

FIG. 16 is a schematic diagram illustrating the relationship between resources carrying different feedback information and carriers. As shown in FIG. 16, PUCCH group 1 includes: carrier CC0-carrier CC2, wherein carrier CC0 is the first carrier. PUCCH group 2 includes: carrier CC3-carrier CC5, wherein carrier CC3 has PUCCH resource configuration information. If the target carrier corresponding to the PDSCH0 is the carrier CC3, the first resource configuration information is the PUCCH resource configuration information of the carrier CC3, and the first resource indication information is the PRI corresponding to the PDSCH0.

Exemplarily, determining the second uplink resource according to the first resource configuration information and the first resource indication information may include: determining the second uplink resource from the PUCCH resource set of the target carrier according to the first resource indication information.

For example, according to the size of the first feedback information and the first resource configuration information, among all the PUCCH resources of the target carrier, determine the PUCCH resource set on the second time unit (such as a time slot) where the second uplink resource is located, and then according to The first resource indication information determines the second uplink resource from the PUCCH resource set.

It should be noted that the target carrier and the first carrier may be located in the same PUCCH group, and the target carrier has corresponding PUCCH resource configuration information. Alternatively, the target carrier is a PCell or PUCCH SCell in the PUCCH group, and the target carrier has corresponding PUCCH resource configuration information.

For the implementation of determining the second uplink resource according to the PRI corresponding to PDSCH0, reference may be made to the implementation manner of determining the first uplink resource, which will not be repeated here.

In this way, when there is no PUCCH resource configuration information on the first carrier, the second uplink resource can be determined from the target carrier to carry the first feedback information, and the target carrier can be selected according to the resource configuration to ensure that enough resources exist on the target carrier. The uplink resources carry feedback information, thereby further improving transmission reliability and efficiency.

In a possible design, if the first feedback information and the second feedback information are fed back in the same time unit of the target carrier, or if the third uplink resource on the target carrier and the fourth uplink resource on the target carrier are in the time domain The method for sending and receiving feedback information provided in FIG. 3 may further include: the terminal device determines, according to the first resource configuration information and the second resource indication information, the second uplink resource to be used for carrying the first feedback information and the second feedback information. Correspondingly, the network device determines, according to the first resource configuration information and the second resource indication information, that the second uplink resource is used to carry the first feedback information and the second feedback information.

The third uplink resource is used to carry the first feedback information, and the fourth uplink resource is used to carry the second feedback information. The first resource configuration information is used to indicate an uplink resource set of the target carrier, and the second resource indication information indicates an uplink resource in the uplink resource set that is used to carry the second feedback information.

In this embodiment of the present application, the third uplink resource may be determined according to the first resource configuration information and the first resource indication information, or the third uplink resource may also be determined according to the second resource configuration information and the second resource indication information on the first carrier Sure. The fourth uplink resource may be determined according to the third resource configuration information and the third resource indication information, or the fourth uplink resource may be determined according to the fourth resource configuration information and the fourth resource indication information. In a word, the third uplink resource and the fourth uplink resource may be determined in the manner of determining the second uplink resource. For the implementation of the solution of determining the third uplink resource or the fourth uplink resource, reference may be made to the implementation manner of determining the second uplink resource, which will not be repeated here.

The following is still described with reference to FIG. 16 .

FIG. 16 is a schematic diagram illustrating the relationship between resources carrying different feedback information and carriers. As shown in FIG. 16 , taking the first feedback information as PDSCH0 and the second feedback information as PDSCH3 as an example, the PUCCH resource configuration information on carrier CC3 is the first resource configuration information, and PDSCH3 on time slot 2n+1 of carrier CC3 corresponds to The PRI in the DCI is the second resource indication information. If the second feedback information is feedback information corresponding to PDSCH3, the second resource indication information may be PRI in DCI corresponding to PDSCH3. The third uplink resource PUCCH30 corresponding to PDSCH0 is the PUCCH resource determined according to the K1 value 3 corresponding to PDSCH0 and the PRI corresponding to PDSCH0. If time slot 2(n+1)+1 on carrier CC0 is a downlink time slot, the time slot of carrier CC3 Slot 2(n+1)+1 is an uplink time slot, and the fourth uplink resource PUCCH40 corresponding to PDSCH3 is an uplink resource determined according to the K1 value 2 corresponding to PDSCH3 and the PRI corresponding to PDSCH3. Taking the first feedback information as PDSCH0 and the second feedback information as PDSCH4 as an example, the second resource indicates that if time slot 2(n+1)+1 on carrier CC0 is a downlink time slot, time slot 2(n+ 1) +1 is the uplink time slot, then the PUCCH resource configuration information on the carrier CC3 is the first resource configuration information, and the PRI in the DCI corresponding to the PDSCH4 on the time slot 2 (n+1) of the carrier CC4 is the second resource indication information. At this time, the fourth uplink resource may be a PUCCH resource determined according to a K1 value of 1 of PDSCH4 and a PRI corresponding to PDSCH4. It can be understood that, if the second feedback information is feedback information corresponding to PDSCH4, the second resource indication information may be PRI in DCI corresponding to PDSCH4.

FIG. 17 is a schematic diagram 1 of the relationship between the third uplink resource and the fourth uplink resource. As shown in Figure 17, taking the target carrier as carrier CC3 as an example, if the time slot 2n-time slot 2(n+1) of the carrier CC3 is a downlink time slot, then the time slot 2(n+1)+ 1 is the uplink time slot, then the first feedback information and the second feedback information are fed back in the same time unit of the target carrier, which may be the third uplink resource PUCCH30 corresponding to the first feedback information in the time slot 2 (n+1) of the carrier CC3 )+1, the fourth uplink resource PUCCH40 corresponding to the second feedback information is also in the time slot 2(n+1)+1 of the carrier CC3.

FIG. 18 is a second schematic diagram of the relationship between the third uplink resource and the fourth uplink resource. As shown in Figure 18, if time slot 2n-time slot 2(n+1) of carrier CC3 is a downlink time slot, then time slot 2(n+1)+1 of carrier CC3 is an uplink time slot, then carrier CC3 On the time slot 2(n+1)+1 of , the third uplink resource PUCCH30 overlaps with the fourth uplink resource PUCCH40 on the target carrier in the time domain, which can be in the time domain symbol occupied by the third uplink resource PUCCH30, There are one or more time-domain symbols that are the same as the fourth uplink resource PUCCH40.

It can be understood that the situation that the first feedback information and the second feedback information are fed back within the same time unit of the target carrier may also include that the third uplink resource on the target carrier and the fourth uplink resource on the target carrier are in the time domain. overlapping situation.

In this way, when two pieces of feedback information exist in the same time unit, or when two pieces of feedback information overlap, two pieces of feedback information are transmitted on the second uplink resource, and two pieces of feedback information can be transmitted at one time, thereby further reducing feedback delay.

It can be understood that, in this embodiment of the present application, the network device may also directly determine the second uplink resource. In other words, the network device may determine the second uplink resource independently of the first resource configuration information and the first resource indication information, or other resource configuration information and resource indication information in the cell group where the first carrier is located.

If the target carrier is a carrier determined according to the PUSCH, the second uplink resource may include time domain symbols occupied by the PUSCH. Sending the first feedback information by the terminal device on the second uplink resource of the target carrier may include: the terminal device sending the first feedback information on the second uplink resource of the target carrier through an uplink data channel. Correspondingly, the network device receiving the first feedback information on the second uplink resource of the target carrier may include: the network device receiving the first feedback information through the uplink data channel on the second uplink resource of the target carrier.

In this way, the first feedback information is sent on the uplink data channel. When the uplink data channel is sent, the first feedback information is sent, which can reduce the number of times of information transmission, thereby further reducing the feedback delay and reducing power consumption.

In a possible design, the time domain positions of the time unit where the first uplink resource is located and the time domain location where the second uplink resource is located overlap.

Exemplarily, in the time domain symbol of the first uplink resource and the time domain symbol of the second uplink resource, there are time domain symbols with the same duration.

In this way, the number of time domain symbols in the interval between the second uplink resource and the start time domain of the first uplink resource can be reduced, and the feedback delay can be further reduced.

In a possible design, the second uplink resource is located at the first time domain location, and the number of time domain symbols spaced between the time domain location where the downlink data channel is located and the first time domain location satisfies the processing capability of the terminal device. In other words, the number of time domain symbols spaced between the time domain end symbol of the downlink data channel and the time domain start symbol of the second uplink resource is greater than the first threshold, which is related to the processing capability of the terminal device.

The first time domain position may be a time domain resource occupied by a time domain symbol of the second uplink resource.

Regarding the processing capability of the terminal device, reference may be made to an existing implementation manner of the processing capability of the terminal device, which will not be repeated here.

In this way, the time domain position of the second uplink resource is determined according to the processing capability of the terminal device, which can take into account the delay and the processing capability of the terminal device, avoid resource idling, and reduce resource waste.

Optionally, the time domain starting position of the second uplink resource may be: the time domain symbol with the most forward time domain position in the first time domain symbol. The first time-domain symbol is a time-domain symbol satisfying the processing capability of the terminal device.

In this way, the most forward-positioned time-domain symbol in the first time-domain symbol is determined as the starting position of the second uplink resource, so that feedback information can be sent as early as possible to further reduce the feedback delay.

In a possible design, the method for sending and receiving feedback information provided in FIG. 3 may further include: the network device sends second indication information. Correspondingly, the terminal device receives the second indication information.

Wherein, the second indication information indicates: if the time domain symbols occupied by the first uplink resources include downlink symbols, and/or are configured as flexible symbols for downlink transmission, the target carrier is determined among the multiple candidate carriers. Or, the second indication information indicates: if the time domain symbols occupied by the first uplink resources include downlink symbols, and/or are configured as flexible symbols for downlink transmission, the first feedback information is not sent. Or, the second indication information indicates: if the time domain symbols occupied by the first uplink resources include downlink symbols, and/or are configured as flexible symbols for downlink transmission, the first feedback information is not received.

Exemplarily, if the time-domain symbols occupied by the first uplink resource include downlink symbols, and/or are configured as flexible symbols for downlink transmission, the terminal device determines the target carrier among the multiple candidate carriers. Correspondingly, the network device may also determine the target carrier from among the multiple candidate carriers. If the time domain symbols occupied by the first uplink resources include downlink symbols, and/or are configured as flexible symbols for downlink transmission, the terminal device may not send the first feedback information. Correspondingly, the network device may not receive the first feedback information.

The second indication information may be implemented in the form of switches, or in the form of parameters, or in the form of a combination of parameters and numerical values. For example, if the second indication information is an on signal indicating "on", the time domain symbols occupied by the first uplink resource of the terminal device include downlink symbols, and/or, when configured as flexible symbols for downlink transmission, when multiple The target carrier is determined from among the candidate carriers. Or, the second indication information is a shutdown signal indicating "off", then the terminal device does not send the first time domain symbol occupied by the first uplink resource includes downlink symbols, and/or when it is configured as a flexible symbol for downlink transmission. a feedback.

In this way, the terminal device can select whether to switch the carrier or whether to send the feedback information according to the second indication information, so as to further improve the flexibility of sending the feedback information.

In this embodiment of the present application, the implementation manner of the second indication information is not specifically limited.

Based on the method for sending and receiving feedback information provided in FIG. 3 , when the first uplink resource cannot be used to transmit feedback information, it can switch to a target carrier other than the first carrier to transmit feedback information, so that feedback information can be transmitted in time, thereby reducing feedback delay. By switching the carrier to transmit the feedback information, the feedback information can be transmitted on the carrier with uplink resources, thereby improving the reliability of the feedback information transmission.

In addition, by switching the carrier to transmit the feedback information, the feedback information can be transmitted on a non-designated carrier, which improves the flexibility of transmitting the feedback information and reduces the number of times the base station retransmits the same data, thereby improving the efficiency, reducing resource overhead and power consumption. The feedback information transmission method provided by the embodiments of the present application has been described in detail above with reference to FIG. 3 to FIG. 18 . A communication apparatus for executing the feedback information sending method provided by the embodiments of the present application will be described in detail below with reference to FIG. 19 to FIG. 20 .

FIG. 19 and FIG. 20 are schematic structural diagrams of possible communication apparatuses provided by embodiments of the present application. These communication apparatuses can be used to implement the functions of the terminal equipment or the network equipment in the above method embodiments, and thus can also achieve the beneficial effects possessed by the above method embodiments. In the embodiment of the present application, the communication apparatus may be a terminal device or a network device as shown in FIG. 2 , and may also be a module (eg, a chip) applied to the terminal device or the network device.

As shown in FIG. 19 , the communication apparatus 1900 includes: a processing module 1901 and a transceiver module 1902 . The communication apparatus 1900 is configured to implement the functions of the terminal device or the network device in the method embodiment shown in FIG. 3 above.

When the communication apparatus 1900 is used to implement the functions of the terminal equipment in the method embodiment shown in FIG. 3 : the processing module 1901 is used to perform the data processing and logical judgment functions of the terminal equipment in FIG. 3 ; the transceiver module 1902 is used to perform the functions of the terminal equipment in FIG. 3 . The information sending and receiving function of terminal equipment.

When the communication apparatus 1900 is used to implement the function of the network device in the method embodiment shown in FIG. 3 : the processing module 1901 is used to perform the data processing and logical judgment functions of the network device in FIG. 3 ; the transceiver module 1902 is used to perform the function of FIG. 3 The information sending and receiving function of the network equipment.

More detailed descriptions about the above-mentioned processing module 1901 and the transceiver module 1902 can be obtained directly by referring to the relevant descriptions in the method embodiment shown in FIG. 3 , and details are not repeated here.

As shown in FIG. 20 , the communication apparatus 2000 includes a processor 2001 and an interface circuit 2002 . The processor 1501 and the interface circuit 2002 are coupled to each other. It can be understood that the interface circuit 2002 can be a transceiver or an input-output interface. Optionally, the communication apparatus 2000 may further include a memory 2003 for storing instructions executed by the processor 2001 or input data required by the processor 2001 to run the instructions or data generated after the processor 2001 runs the instructions.

When the communication apparatus 2000 is used to implement the method shown in FIG. 3 , the processor 2001 is used to implement the function of the above-mentioned processing module 1901 , and the interface circuit 2002 is used to implement the function of the above-mentioned transceiver module 1902 .

When the above communication device is a chip applied to a terminal device, the terminal device chip implements the functions of the terminal device in the above method embodiments. The terminal device chip receives information from other modules (such as a radio frequency module or an antenna) in the terminal device, and the information is sent by the network device to the terminal device; or, the terminal device chip sends information to other modules (such as a radio frequency module or an antenna) in the terminal device antenna) to send information, the information is sent by the terminal equipment to the network equipment.

When the above communication device is a chip applied to a network device, the network device chip implements the functions of the network device in the above method embodiments. The network device chip receives information from other modules (such as a radio frequency module or an antenna) in the network device, and the information is sent by the terminal device to the network device; or, the network device chip sends information to other modules in the network device (such as a radio frequency module or an antenna). antenna) to send information, the information is sent by the network equipment to the terminal equipment.

It can be understood that the processor in the embodiments of the present application may be a central processing unit (Central Processing Unit, CPU), and may also be other general-purpose processors, digital signal processors (Digital Signal Processor, DSP), application-specific integrated circuits (Application Specific Integrated Circuit, ASIC), Field Programmable Gate Array (Field Programmable Gate Array, FPGA) or other programmable logic devices, transistor logic devices, hardware components or any combination thereof. A general-purpose processor may be a microprocessor or any conventional processor.

The method steps in the embodiments of the present application may be implemented in a hardware manner, or may be implemented in a manner in which a processor executes software instructions. Software instructions may be composed of corresponding software modules, and software modules may be stored in random access memory, flash memory, read-only memory, programmable read-only memory, erasable programmable read-only memory, electrically erasable programmable read-only memory memory, registers, hard disk, removable hard disk, CD-ROM or any other form of storage medium known in the art. An exemplary storage medium is coupled to the processor, such that the processor can read information from, and write information to, the storage medium. Of course, the storage medium can also be an integral part of the processor. The processor and storage medium may reside in an ASIC. Alternatively, the ASIC may be located in a network device or in an end device. Of course, the processor and the storage medium may also exist in the network device or the terminal device as discrete components.

In the above-mentioned embodiments, it may be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented in software, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer programs or instructions. When the computer program or instructions are loaded and executed on a computer, the processes or functions described in the embodiments of the present application are executed in whole or in part. The computer may be a general purpose computer, a special purpose computer, a computer network, network equipment, user equipment, or other programmable apparatus. The computer program or instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer program or instructions may be downloaded from a website, computer, A server or data center transmits by wire or wireless to another website site, computer, server or data center. The computer-readable storage medium may be any available medium that can be accessed by a computer, or a data storage device such as a server, data center, or the like that integrates one or more available media. The usable media may be magnetic media, such as floppy disks, hard disks, magnetic tapes; optical media, such as digital video discs; and semiconductor media, such as solid-state drives. The computer-readable storage medium may be a volatile or non-volatile storage medium, or may include both types of storage media, volatile and non-volatile.

In the various embodiments of the present application, if there is no special description or logical conflict, the terms and/or descriptions between different embodiments are consistent and can be referred to each other, and the technical features in different embodiments are based on their inherent Logical relationships can be combined to form new embodiments.

In this application, "at least one" means one or more, and "plurality" means two or more. "And/or", which describes the relationship of the associated objects, indicates that there can be three kinds of relationships, for example, A and/or B, it can indicate that A exists alone, A and B exist at the same time, and B exists alone, where A, B can be singular or plural. In the text description of this application, the character "/" generally indicates that the related objects are a kind of "or" relationship; in the formula of this application, the character "/" indicates that the related objects are a kind of "division" Relationship.

It can be understood that, the various numbers and numbers involved in the embodiments of the present application are only for the convenience of description, and are not used to limit the scope of the embodiments of the present application. The size of the sequence numbers of the above processes does not imply the sequence of execution, and the execution sequence of each process should be determined by its function and internal logic.

Claims (43)

1. A method for sending feedback information, characterized in that it is applied to a terminal device, the method comprising:

   determining the first uplink resource on the first carrier, where the first uplink resource is used to carry the first feedback information of the downlink data channel;

   If the time-domain symbols occupied by the first uplink resources include downlink symbols, and/or the time-domain symbols occupied by the first uplink resources are configured as flexible symbols for downlink transmission, the second uplink of the target carrier The first feedback information is sent on the resource, wherein the target carrier is different from the first carrier, the target carrier is one of multiple candidate carriers, and the time domain symbol occupied by the second uplink resource is Uplink symbols, and/or flexible symbols that are not configured for downlink transmission.
2. The method according to claim 1, wherein the method further comprises:

   Receive first indication information, where the first indication information indicates: the mapping relationship between the slot index of the first carrier and the target carrier index.
3. The method according to claim 1, wherein the target carrier is the carrier with the smallest absolute value of the difference between the sub-carrier spacing of the first carrier and the plurality of candidate carriers.
4. The method according to any one of claims 1-3, wherein the determining the first uplink resource on the first carrier comprises:

   A first time unit is determined according to timing indication information and timing configuration information; wherein, the first time unit is a time unit on the first carrier, and the timing configuration information is used to configure a timing relationship set, the timing relationship The set includes at least one timing relationship, and each timing relationship in the set of timing relationships is used to determine: the time unit where the downlink data channel on the first carrier is located corresponds to the time unit used for sending the downlink data channel. The timing relationship between the time units of the feedback information; the timing indication information is used to indicate: a timing relationship in the timing relationship set configured by the timing configuration information;

   According to the first resource indication information and the second resource configuration information, the first uplink resource on the first carrier is determined in the first time unit; wherein, the second resource configuration information is used to indicate the first uplink resource on the first carrier The first resource indication information is used to indicate: the uplink resources in the uplink resource set indicated by the resource configuration information on the first carrier.
5. The method according to claim 4, wherein the method further comprises:

   determining the second uplink resource according to the first resource configuration information and the first resource indication information;

   The first resource configuration information is used to indicate an uplink resource set of the target carrier, and the first resource indication information indicates an uplink resource in the uplink resource set that is used to carry the first feedback information.
6. The method according to claim 4, wherein the start position of the second uplink resource and the first uplink resource is the same in the time domain, and the second uplink resource and the first uplink resource are in the frequency domain The starting position is the same.
7. The method according to any one of claims 1-4, wherein if the first feedback information and the second feedback information are fed back within the same time unit of the target carrier; or, if the target carrier is fed back The third uplink resource on the target carrier overlaps with the fourth uplink resource on the target carrier in the time domain, wherein the third uplink resource is used to carry the first feedback information, and the fourth uplink resource is used to carry the first feedback information. Bearing the second feedback information; the method further includes:

   According to the first resource configuration information and the second resource indication information, determine that the second uplink resource is used to carry the first feedback information and the second feedback information;

   The first resource configuration information is used to indicate an uplink resource set of the target carrier, and the second resource indication information indicates an uplink resource in the uplink resource set that is used to carry the second feedback information.
8. The method according to claim 1, wherein the time unit where the first uplink resource is located is the first time unit, and the method further comprises:

   Determining, among the plurality of candidate carriers, the carrier of the scheduled uplink data channel in the first time unit as the target carrier;

   The sending the first feedback information on the second uplink resource of the target carrier includes:

   The first feedback information is sent through the uplink data channel on the second uplink resource of the target carrier.
9. The method according to any one of claims 1-8, wherein the time unit where the first uplink resource is located overlaps with the time domain location of the time unit where the second uplink resource is located.
10. The method according to claim 1, wherein the time unit where the first uplink resource is located is a first time unit, and the first time unit corresponds to a plurality of second time units on the target carrier; the The time unit where the second uplink resource is located is a target time unit, and the target time unit is one of the plurality of second time units.
11. The method according to claim 10, wherein the target time unit is a second time unit with the highest time domain among the plurality of second time units, and the second time unit includes a candidate uplink resource, The second uplink resource is a candidate uplink resource in the target time unit; the second time unit satisfies the following multiple conditions:

    The number of time-domain symbols spaced between the time-domain start symbol of the candidate uplink resource on the second time unit and the time-domain end symbol of the downlink data channel is greater than a first threshold, and the first threshold is equal to The processing capability of the terminal device is related; and,

    The time domain symbols occupied by the second uplink resources are uplink symbols, and/or are not configured as flexible symbols for downlink transmission;

    Wherein, the candidate uplink resources are resources in the first resource configuration information indicated by the first resource indication information; the first resource configuration information is used to indicate the uplink resource set of the target carrier, the first resource The indication information indicates an uplink resource in the uplink resource set that is used to carry the first feedback information.
12. The method according to claim 10, wherein the subcarrier spacing of the target carrier is greater than the subcarrier spacing of the first carrier.
13. The method according to any one of claims 1-10, wherein the second uplink resource is located at a first time domain position, and the time domain position where the downlink data channel is located is the same as the first time domain position The number of time-domain symbols spaced therebetween satisfies the processing capability of the terminal device.
14. The method according to claim 13, wherein the time domain starting position of the second uplink resource is: the time domain symbol with the most forward time domain position in the first time domain symbol;

    Wherein, the first time-domain symbol is a time-domain symbol satisfying the processing capability of the terminal device.
15. The method according to any one of claims 1-14, wherein the method further comprises:

    Receive second indication information, where the second indication information indicates that: if the time domain symbols occupied by the first uplink resources include downlink symbols, and/or are configured as flexible symbols for downlink transmission, then in the The target carrier is determined from among multiple candidate carriers; or,

    The second indication information indicates that: if the time domain symbols occupied by the first uplink resources include downlink symbols, and/or are configured as flexible symbols for downlink transmission, the first feedback information is not sent.
16. A method for receiving feedback information, characterized in that it is applied to a network device, the method comprising:

    determining the first uplink resource on the first carrier, where the first uplink resource is used to carry the first feedback information of the downlink data channel;

    If the time-domain symbols occupied by the first uplink resources include downlink symbols, and/or the time-domain symbols occupied by the first uplink resources are configured as flexible symbols for downlink transmission, then on the second uplink resource of the target carrier Receive the first feedback information, wherein the target carrier is different from the first carrier, the target carrier is one of multiple candidate carriers, and the time domain symbol occupied by the second uplink resource is an uplink symbol , and/or flexible symbols that are not configured for downlink transmission.
17. The method of claim 16, wherein the method further comprises:

    Send first indication information, where the first indication information indicates: the mapping relationship between the time slot index of the first carrier and the target carrier index.
18. The method according to claim 16, wherein the target carrier is a carrier with the smallest absolute value of the difference between the subcarrier spacing of the first carrier and the plurality of candidate carriers.
19. The method according to any one of claims 16-18, wherein the method further comprises:

    determining the second uplink resource according to the first resource configuration information and the first resource indication information;

    The first resource configuration information is used to indicate an uplink resource set of the target carrier, and the first resource indication information indicates an uplink resource in the uplink resource set that is used to carry the first feedback information.
20. The method according to any one of claims 16-18, wherein the second uplink resource and the first uplink resource have the same time domain starting position, and the second uplink resource is the same as the first uplink resource. The starting positions of an uplink resource in the frequency domain are the same.
21. The method according to claim 16, wherein the time unit where the first uplink resource is located is a first time unit, and the first time unit corresponds to a timing relationship indicated by the timing indication information in the timing configuration information The time units are the same; the timing configuration information is used to configure a timing relationship set, the timing relationship set includes at least one timing relationship, and each timing relationship in the timing relationship set is used to determine: The timing relationship between the time unit where the downlink data channel is located and the time unit used for sending the feedback information corresponding to the downlink data channel; the timing indication information is used to indicate: in the timing relationship set configured by the timing configuration information a temporal relationship of ;

    The first uplink resource is consistent with the resource indicated by the first resource indication information in the uplink resource set on the first carrier; the first resource indication information is used to indicate: the resource configuration on the first carrier The uplink resource in the uplink resource set indicated by the information.
22. The method according to any one of claims 16-18, wherein, if the first feedback information and the second feedback information are fed back within the same time unit of the target carrier; or,

    If the third uplink resource on the target carrier and the fourth uplink resource on the target carrier overlap in the time domain, where the third uplink resource is used to carry the first feedback information, the Four uplink resources are used to carry the second feedback information; the method further includes:

    determining, according to the first resource configuration information and the second resource indication information, that the second uplink resource is used to carry the first feedback information and the second feedback information;

    The first resource configuration information is used to indicate an uplink resource set of the target carrier, and the second resource indication information indicates an uplink resource in the uplink resource set that is used to carry the second feedback information.
23. The method according to claim 16, wherein the time unit where the first uplink resource is located is the first time unit, and the method further comprises:

    Determining, among the plurality of candidate carriers, the carrier of the scheduled uplink data channel in the first time unit as the target carrier;

    The receiving the first feedback information on the second uplink resource of the target carrier includes:

    The first feedback information is received through the uplink data channel on the second uplink resource of the target carrier.
24. The method according to any one of claims 16-23, wherein the time domain position of the time unit where the first uplink resource is located overlaps with the time domain location of the time unit where the second uplink resource is located.
25. The method according to claim 16, wherein the time unit where the first uplink resource is located is a first time unit, and the first time unit corresponds to a plurality of second time units on the target carrier; the The time unit where the second uplink resource is located is a target time unit, and the target time unit is one of the plurality of second time units.
26. The method according to claim 25, wherein the target time unit is a second time unit with the highest time domain among the plurality of second time units, and the second time unit includes a candidate uplink resource, The second uplink resource is a candidate uplink resource in the target time unit; the second time unit satisfies the following multiple conditions:

    The number of time-domain symbols in the interval between the time-domain start symbol of the candidate uplink resource and the time-domain end symbol of the downlink data channel on the second time unit is greater than a first threshold, the first threshold and the terminal related to the processing power of the device; and,

    The time domain symbols occupied by the second uplink resources are uplink symbols, and/or are not configured as flexible symbols for downlink transmission;

    Wherein, the candidate uplink resources are resources in the first resource configuration information indicated by the first resource indication information; the first resource configuration information is used to indicate the uplink resource set of the target carrier, the first resource The indication information indicates an uplink resource in the uplink resource set that is used to carry the first feedback information.
27. The method according to any one of claims 25-26, wherein the subcarrier spacing of the target carrier is greater than the subcarrier spacing of the first carrier.
28. The method according to claim 16, wherein the second uplink resource is located in a first time domain position, and the time domain position of the time domain where the downlink data channel is located is in the time domain of the interval between the first time domain position The number of symbols satisfies the processing capability of the terminal device.
29. The method according to claim 28, wherein the time domain starting position of the second uplink resource is: the time domain symbol with the most forward time domain position in the first time domain symbol;

    Wherein, the first time-domain symbol is a time-domain symbol satisfying the processing capability of the terminal device.
30. The method according to any one of claims 16-29, wherein the method further comprises:

    Sending second indication information, where the second indication information indicates that: if the time domain symbols occupied by the first uplink resources include downlink symbols, and/or are configured as flexible symbols for downlink transmission, then in the The target carrier is determined from among multiple candidate carriers; or,

    The second indication information indicates that: if the time domain symbols occupied by the first uplink resources include downlink symbols, and/or are configured as flexible symbols for downlink transmission, the first feedback information is not received.
31. A communication device, characterized by comprising a module for performing the method according to any one of claims 1-15.
32. A communication device, characterized by comprising means for performing the method of any one of claims 16-30.
33. A communication device, comprising: a processor coupled to a memory;

    The processor for executing a computer program stored in the memory to cause the apparatus to perform the method of any one of claims 1-15.
34. A communication device, comprising: a processor coupled to a memory;

    The processor for executing a computer program stored in the memory to cause the apparatus to perform the method of any one of claims 16-30.
35. A communication device is characterized by comprising a processor and an interface circuit, the interface circuit is used to receive signals from other devices other than the communication device and transmit to the processor or transfer signals from the processor The signal is sent to a device other than the communication device, and the processor is configured to implement the method of any one of claims 1-15 by means of a logic circuit or executing code instructions.
36. A communication device is characterized in that it includes a processor and an interface circuit, the interface circuit is used to receive signals from other devices other than the communication device and transmit to the processor or transfer signals from the processor. The signal is sent to a device other than the communication device, and the processor implements the method of any one of claims 16-30 by means of logic circuits or executing code instructions.
37. A communication device, characterized in that it includes a processor and a transceiver, the transceiver is used for information interaction between the communication device and other devices, and the processor executes program instructions to execute the method according to claim 1- The method of any one of 15.
38. A communication device, characterized in that it includes a processor and a transceiver, the transceiver is used for information interaction between the communication device and other devices, and the processor executes program instructions to execute the method according to claim 16- The method of any one of 30.
39. A computer-readable storage medium, characterized in that, a computer program or instruction is stored in the storage medium, and when the computer program or instruction is executed by a communication device, any one of claims 1-15 is implemented. Methods.
40. A computer-readable storage medium, characterized in that a computer program or instruction is stored in the storage medium, and when the computer program or instruction is executed by a communication device, any one of claims 16-30 is implemented. Methods.
41. A computer program product, characterized in that the computer program product comprises: a computer program or instruction, when the computer program or instruction is run on a computer, the computer is made to execute any one of claims 1-15 the method described.
42. A computer program product, characterized in that the computer program product comprises: a computer program or instruction, when the computer program or instruction is run on a computer, the computer is made to perform any one of claims 16-30 the method described.
43. A communication system comprising the communication device of any one of claims 32, 34, 36, or 38, and the communication device of any one of claims 31, 33, 35, or 37.

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