CN118101141A

CN118101141A - Method and device for sending and receiving feedback information

Info

Publication number: CN118101141A
Application number: CN202310175502.7A
Authority: CN
Inventors: 何泓利; 李雪茹
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2022-11-28
Filing date: 2023-02-17
Publication date: 2024-05-28
Also published as: WO2024114412A1

Abstract

The embodiment of the application provides a method for sending and receiving feedback information, which comprises the following steps: the first device transmits first information to the second device, the first information including information of the first transmission resource and information of the first feedback resource. The first transmission resource is associated with a first feedback resource. Wherein the first transmission resource is used for the first device to receive the first data of the second device. The first device sends feedback information to the second device on the first feedback resource, the feedback information indicating whether the first device successfully received the first data. According to the method and the device for transmitting the feedback information, the first transmission resource and the first feedback resource between the first device and the second device are indicated through the first information, so that the resource positions used for transmitting the feedback information between the first device and the second device are more flexible.

Description

Method and device for sending and receiving feedback information

Technical Field

The embodiment of the application relates to the field of communication, in particular to a method and a device for sending feedback information and a method and a device for receiving the feedback information.

Background

The sidelink (Sidelink abbreviated SL) is an important technology in a communication system that enables device-to-device (D2D) direct communication not through a base station, and for example, the communication system may be a long term evolution (long term evolution, LTE) system or a fifth generation mobile communication new radio (the fifth generation new radio,5G NR) system, etc. Since the transmissions between devices do not need to be forwarded by the base station, sidelink can achieve shorter delays, higher spatial multiplexing efficiency and lower core network loading. The method has great effect in scenes with high local communication requirements such as vehicle-to-vehicle everything (vehicle to everything, V2X), smart home, short-distance transmission, virtual/augmented reality (VR/AR), smart factories and the like.

During SL communication, the device may be configured with a resource pool including configuration information of a physical sidelink feedback channel (PHYSICAL SIDELINK feedback channel, PSFCH) in the configuration information of the resource pool, PSFCH may be configured to carry sidelink feedback control information, including a sidelink hybrid automatic repeat request (hybrid automatic repeat request, HARQ).

The configuration information of the resource pool further includes a period PSFCH, that is, a time slot containing PSFCH resources occurs every how many time slots. After the device receives the physical side uplink shared channel (PHYSICAL SIDELINK SHARED CHANNEL, PSSCH), the device uses the configuration information of the resource pool to determine PSFCH resources to send feedback information. Specifically, for example, the device first detects a physical side-link control channel (PSCCH), and receives a PSCCH according to side-control information (Sidelink control information, SCI) in the PSCCH. When the device receives the PSSCH, a slot corresponding to the PSSCH and physical resource blocks (physical resource block, PRBs) corresponding to one or more sub-channels may be determined according to configuration information of the resource pool to determine PSFCH resources for transmitting feedback information.

In the prior art, PSFCH resources for transmitting feedback information are configured through a system, that is, a time slot and PSFCH resources for transmitting feedback information corresponding to a subchannel are configured in advance on a resource pool. If the device sends feedback information of the PSSCH according to PSFCH resources corresponding to the PSSCH configured by the system, the flexibility of the resource configuration is poor.

Disclosure of Invention

The embodiment of the application provides a method for sending and receiving feedback information, which can enable feedback resources occupied by sending and receiving the feedback information to be more flexible.

In a first aspect, a method for transmitting feedback information is provided, the method comprising: the method comprises the steps that first equipment sends first information to second equipment, the first information comprises information of first transmission resources and information of first feedback resources, the first transmission resources are associated with the first feedback resources, a first feedback resource set comprises the first feedback resources, configuration information of a first resource pool comprises configuration information of the first feedback resource set, the first resource pool is a resource pool configured for the first equipment and the second equipment, and the first transmission resources are used for the first equipment to receive first data of the second equipment; the first device sends feedback information to the second device on the first feedback resource, the feedback information being used to indicate whether the first device successfully received the first data.

The configuration information of the first resource pool includes information of the first feedback resource, which may be further understood that the first feedback resource set is configured for the first resource pool, or the first feedback resource set is related to the configuration information of the first resource pool. It is also understood that the first set of feedback resources may be determined by configuration information of the first resource pool. For example, the configuration information of the first resource pool includes a period PSFCH, and assuming that the period of PSFCH is configured as four slots (e.g., 0,4,8, 12), the corresponding slots 0,4,8,12 include resources for transmission PSFCH; for another example, the configuration information of the first resource pool includes PSFCH configuration information of a set of transmission resource blocks, and the set of resource blocks includes one or more physical resource blocks (physical resource block, PRB) for transmission PSFCH.

It should be understood that the first resource pool is configured for the first device and the second device, where the first resource pool may also be configured for other devices (such as the third device), which is not specifically limited to the present application. In addition, the first device may include one or more devices, and the second device may include one or more devices, which is not particularly limited in this regard.

According to the method for sending feedback information provided by the application, the first equipment can configure the feedback resource corresponding to the first transmission resource for the second equipment, rather than determining the feedback resource according to the mapping relation between the default transmission resource and the feedback resource in the prior art, so that the flexibility of the feedback resource is improved. In addition, the first feedback resource still belongs to the feedback resource set configured by the first resource pool, so that the frame structure of the existing side uplink can be kept unchanged.

With reference to the first aspect, in some possible implementations, the method further includes: the first device sends second information to the third device, the second information comprising information of a second transmission resource and information of a first feedback resource, the second transmission resource being used by the first device to receive second data from the third device, the second transmission resource being associated with the first feedback resource;

The first device sending feedback information to the second device on a first feedback resource, the feedback information being used to indicate whether the first device successfully received the first data, comprising:

The first device sends feedback information to the second device and the third device on the first feedback resource, the feedback information being used to indicate whether the first device successfully receives the first data and the second data.

Based on the technical scheme, the first device sends second information to the third device, wherein the second information comprises information of a second transmission resource and information of a first feedback resource, and the second transmission resource is associated with the first feedback resource. It can be seen that when a first device receives first data from a second device on a first transmission resource and the first device receives second data from a third device on a second transmission resource, the first device sends feedback information on the same feedback resource, e.g., the first device sends feedback information on the same feedback resource (e.g., the first feedback resource). That is, the first device can feedback data transmitted from a plurality of different devices through a plurality of different transmission resources on one feedback resource, so that the amount of feedback information sent by the first device is reduced, and the reliability of feedback and the resource utilization rate are improved.

It should be understood that the third device may be one or more devices, and when the third device is a plurality of devices, the second data sent by the third device includes a plurality of data, where feedback information sent by the first device on the first feedback resource is used to indicate whether the first device successfully receives the first data and the second data.

With reference to the first aspect, in some possible implementations, the first information includes information of a first periodic transmission resource and information of a first periodic feedback resource, the first periodic transmission resource includes the first transmission resource, and the first periodic feedback resource includes the first feedback resource.

In one possible implementation, the at least one transmission resource included in the first periodic transmission resource is in one-to-one association with the at least one feedback resource included in the first periodic feedback resource.

Based on the technical scheme, the method and the device can flexibly indicate the corresponding feedback resources of the transmission resources of the periodic service, and further improve the overall performance of the network.

With reference to the first aspect, in some possible implementations, the information of the first feedback resource includes information of a third transmission resource, the first feedback resource is a feedback resource corresponding to the third transmission resource according to a first mapping relationship, and the first mapping relationship is a mapping relationship between transmission resources in the first resource pool and the feedback resource.

It should be understood that the information of the first feedback resource includes information of the third transmission resource, and the first feedback resource is a feedback resource corresponding to the third transmission resource according to the first mapping relationship in the first feedback resource set. The first mapping relation is the mapping relation between transmission resources and feedback resources in the first resource pool.

Based on the above technical solution, the information of the first feedback resource includes information of a third transmission resource, and the first feedback resource for sending the feedback information is determined through the third transmission resource and the first mapping relation. And determining that the feedback resource corresponding to the third transmission resource is the first feedback resource from the first feedback resource set through the first mapping relation.

With reference to the first aspect, in some possible implementations, the information of the first periodic feedback resource includes information of a third periodic transmission resource, the third periodic transmission resource includes a third transmission resource, the first periodic feedback resource is a periodic feedback resource corresponding to the third periodic transmission resource according to a first mapping relationship in the first periodic feedback resource set, and the first periodic feedback resource set is configured by the first resource pool.

Based on the technical scheme, the transmission resource of the periodic service can be flexibly indicated to the corresponding feedback resource, and the overall performance of the network is further improved.

With reference to the first aspect, in some possible implementations, the method further includes:

The first device receiving third data of the fourth device on a third transmission resource;

The first device sends feedback information to the fourth device on a first feedback resource, wherein the first feedback resource is determined according to a first mapping relation and a third transmission resource, the first mapping relation is a mapping relation between the transmission resource in the first resource pool and the feedback resource, and the feedback information is used for indicating whether the first device successfully receives the first data, the second data and the third data.

It should be understood that the third transmission resource is a transmission resource having a first mapping relation with the first feedback resource.

Based on the technical scheme, the first device receives third data of the fourth device on the third transmission resource, and the first device sends feedback information to the fourth device on the first feedback resource. The first device sends feedback information to a different device on a first feedback resource. The first feedback resource is a feedback resource having a mapping relation with the third transmission resource, which is determined according to the first mapping relation, so if other devices (for example, the fifth device and the sixth device) still determine the feedback resource corresponding to the transmission resource according to the first mapping relation, the first device sends feedback information on the first feedback resource without occupying the feedback resource corresponding to the other transmission resource, that is, without generating resource conflict with the feedback resource of the other devices.

With reference to the first aspect, in some possible implementations, the first device sends feedback information to the second device and the third device on a first feedback resource, where the feedback information is used to indicate whether the first device successfully receives the first data and the second data, including:

the first device transmits NACK information to the second device and the third device on the first feedback resource when at least one of the following conditions is satisfied, wherein the conditions include:

When the first device does not receive or successfully decode the first data on the first transmission resource;

When the first device does not receive or successfully decode the second data on the second transmission resource.

Based on the above scheme, the first device sends feedback information on the first feedback resource, and when the first device determines that the data (first data and second data) received by the first transmission resource and the second transmission resource associated with the first feedback resource are both successfully received and successfully decoded, the feedback information sent by the first device to the second device and the third device on the first feedback resource is ACK information; the first device determines that at least one data (first data and second data) received by the first transmission resource and the second transmission resource associated with the first feedback resource is not received or fails to be decoded, and feedback information sent by the first device to the second device and the third device on the first feedback resource is NACK information.

It should be understood that the present application can be further extended to a scenario where there are multiple (e.g., three or more) transmission resources associated with the first feedback resource, and when the first device successfully receives and successfully decodes data on the multiple transmission resources, the feedback information sent by the first device is ACK information. When the first device fails to receive or decode one or more data on the plurality of transmission resources, the feedback information sent by the first device is NACK information, so that the quantity of the sent feedback information is further reduced, the feedback reliability is improved, and the resource utilization rate is improved.

With reference to the first aspect, in some possible implementations, the second information includes information of a second periodic transmission resource and information of a first periodic feedback resource, and the second periodic transmission resource includes the second transmission resource.

The first device receives first indication information of the second device on a first transmission resource, the first indication information being used for indicating whether the first data is invalid data, the first indication information being associated with the first data.

Based on the above scheme, when the second device does not have a transmission requirement on the first transmission resource, in order to avoid the problem that the first device considers that the second device does not receive the data on the first transmission resource and sends NACK information on the first feedback resource, other devices associated with the first feedback resource retransmit the data, and waste resources. When the second device does not have data transmission on the first transmission resource, the second device can send first indication information to the first device on the first transmission resource, where the first indication information is used to indicate that the first data of the second device on the first transmission resource is invalid data or null packet indication, so that when the first device determines feedback information according to data receiving results on multiple transmission resources associated with the first feedback resource, the receiving results of the first data on the first transmission resource can be eliminated, and ACK information or NACK information is determined to be sent only according to whether data is received and successfully decoded on other transmission resources, thereby improving accuracy of the feedback information of the first device on determining the first feedback resource, and avoiding resource waste.

The first device sends activation information or deactivation information to the second device, the activation information or deactivation information is associated with the first transmission resource, the activation information is used for indicating the first device to send feedback information of first data to the second device on the first feedback resource, the deactivation information is used for indicating the first device to send feedback information of the first data to the second device on the second feedback resource, the second feedback resource is a feedback resource corresponding to the first transmission resource according to a first mapping relation in the first feedback resource set, and the first mapping relation is a mapping relation between the transmission resource and the feedback resource in the first resource pool.

It should be understood that the first device sends activation information or deactivation information to the second device, where the activation information is used to instruct feedback of the first data between the first device and the second device through a first feedback resource configured by the first device, and the deactivation information is used to instruct feedback of the first data between the first device and the second device through a second feedback resource configured by the resource pool and corresponding to the first transmission resource.

It should also be appreciated that the activation information or deactivation information includes indication information of one or more transmission resources. The activation information or deactivation information can further activate or deactivate the different transmission resources.

In one possible implementation, when a first device determines that the first transmission resource is occupied by another device, the first device sends deactivation information to a second device. Or when the second device does not perform data transmission on the first transmission resource or performs resource reselection, the first device transmits deactivation information to the second device.

Based on the technical scheme, the mode of determining the feedback resource between the devices can be flexibly adjusted according to the interference condition and the load condition through the activation information and the deactivation information, and the reliability of the feedback information transmission is improved.

With reference to the first aspect, in some possible implementations, the activation information or the deactivation information is associated with a first periodic transmission resource, where the first periodic transmission resource includes a first transmission resource.

With reference to the first aspect, in some possible implementations, the activation information includes a bit map, the deactivation information includes a bit map, a first bit in the bit map corresponds to the first transmission resource,

When the first bit takes a first value, the first bit is used to instruct the first device to send feedback information to the second device on the first feedback resource,

When the first bit takes the second value, the first bit is used to instruct the first device to send feedback information to the second device on the second feedback resource.

Based on the technical scheme, the concrete expression forms of the activation information and the deactivation information can be indicated through the values of the bits in the bit map. Wherein bits in the bit map correspond to the transmission resources, e.g., a first bit corresponds to the first transmission resource, the first bit takes a first value, and the first bit is used to instruct the first device to transmit feedback information on the first feedback resource; when the first bit takes the second value, the first bit is used to instruct the first device to transmit feedback information on the second feedback resource.

With reference to the first aspect, in some possible implementations, the activation information and the deactivation information are included in media intervention control (medium control access, MAC) control element information.

The first device receives first request information of the second device, wherein the first request information is used for requesting the first device to send activation information or deactivation information to the second device.

Based on the above technical solution, for example, in the case where feedback information is transmitted between the first device and the second device through the first feedback resource, when the second device does not have a need to transmit data on the first transmission resource/the first periodic transmission resource, the second device may transmit first request information to the first device, where the first request information is used to request the first device to transmit deactivation information to the second device, so that processing complexity of the first device may be reduced.

In a second aspect, there is provided a method of receiving feedback information, the method comprising:

the second device receives first information of the first device, the first information comprises information of first transmission resources and information of first feedback resources, the first transmission resources are associated with the first feedback resources, the first feedback resource set comprises the first feedback resources, configuration information of a first resource pool comprises configuration information of the first feedback resource set, the first resource pool is a resource pool configured for the first device and the second device, and the first transmission resources are used for the second device to send first data to the first device;

the second device receives feedback information of the first device on the first feedback resource, wherein the feedback information is used for indicating whether the first device successfully receives the first data.

According to the method for receiving feedback information provided by the application, on one hand, the second equipment receives the feedback resource corresponding to the first transmission resource configured by the first equipment, and the feedback resource is determined not according to the mapping relation between the default transmission resource and the feedback resource in the prior art, so that the flexibility of the feedback resource is improved. On the other hand, the first feedback resource still belongs to the feedback resource set configured by the first resource pool, so that the frame structure of the existing side uplink is ensured to be unchanged.

With reference to the second aspect, in some possible implementations, the first information includes information of a first periodic transmission resource and information of a first periodic feedback resource, the first periodic transmission resource includes the first transmission resource, and the first periodic feedback resource includes the first feedback resource.

In one possible implementation, at least one transmission resource included in the first periodic transmission resource is in one-to-one association with at least one feedback resource included in the first periodic feedback resource.

With reference to the second aspect, in some possible implementations of the method, the information of the first feedback resource includes information of a third transmission resource, the first feedback resource is a feedback resource corresponding to the third transmission resource according to a first mapping relationship, and the first mapping relationship is a mapping relationship between transmission resources in the first resource pool and the feedback resource.

With reference to the second aspect, in some possible implementations of the method, the information of the first periodic feedback resource includes information of a third periodic transmission resource, the third periodic transmission resource includes a third transmission resource, the first periodic feedback resource is a periodic feedback resource corresponding to the third periodic transmission resource according to a first mapping relationship in the first periodic feedback resource set, and the first periodic feedback resource set is configured by the first resource pool.

With reference to the second aspect, in some possible implementations, the second device sends first indication information to the first device on the first transmission resource, where the first indication information is used to indicate whether the first data is invalid data.

Based on the above scheme, when the second device does not have a transmission requirement on the first transmission resource, in order to avoid the problem that the first device considers that the second device does not receive the data on the first transmission resource, NACK information is sent on the first feedback resource, so that other devices associated with the first feedback resource retransmit the data, and waste resources. When the second device does not have data transmission on the first transmission resource, the second device can send first indication information to the first device on the first transmission resource, where the first indication information is used to indicate that the first data of the second device on the first transmission resource is invalid data or null packet indication, so that when the first device determines feedback information according to data receiving results on multiple transmission resources associated with the first feedback resource, the receiving results of the first data on the first transmission resource can be eliminated, and ACK information or NACK information is determined to be sent only according to whether data is received and successfully decoded on other transmission resources, thereby improving accuracy of the feedback information of the first device on determining the first feedback resource, and avoiding resource waste.

With reference to the second aspect, in some possible implementations, the second device receives activation information or deactivation information of the first device, where the activation information or deactivation information is associated with a first transmission resource, the activation information is used to instruct the second device to receive feedback information from the first device on a first feedback resource, and the deactivation information is used to instruct the second device to receive feedback information of the first device on a second feedback resource, where the second feedback resource is a feedback resource corresponding to the first transmission resource and determined according to a mapping relationship between transmission resources and feedback resources in the first resource pool.

It should be understood that the second device receives activation information or deactivation information of the first device, where the activation information is used to instruct feedback of the first data between the first device and the second device through a first feedback resource configured by the first device, and the deactivation information is used to instruct feedback of the first data between the first device and the second device through a second feedback resource configured by a resource pool and corresponding to the first transmission resource.

In one possible implementation, the second device receives deactivation information from the first device when the first device determines that the first transmission resource is occupied by other devices. Or when the second device does not perform data transmission on the first transmission resource or performs resource reselection, the second device receives the deactivation information of the first device.

With reference to the second aspect, in some possible implementations, the activation information or the deactivation information is associated with a first periodic transmission resource, the first periodic transmission resource including the first transmission resource.

With reference to the second aspect, in some possible implementations, the activation information includes a bit map, the deactivation information includes a bit map, a first bit in the bit map corresponds to the first transmission resource,

When the first bit takes a first value, the first bit is used to instruct the second device to receive feedback information on the first feedback resource,

The first bit is used to instruct the second device to receive feedback information on the second feedback resource when the first bit takes the second value.

Based on the technical scheme, the concrete expression forms of the activation information and the deactivation information can be indicated through the values of the bits in the bit map. Wherein bits in the bit map correspond to the transmission resources, for example, a first bit corresponds to the first transmission resource, the first bit takes a first value, and the first bit is used to instruct the second device to receive feedback information of the first device on the first feedback resource; when the first bit takes the second value, the first bit is used to instruct the second device to receive feedback information of the first device on the second feedback resource.

With reference to the second aspect, in some possible implementations, the activation information and the deactivation information are included in medium access control MAC control element information.

With reference to the second aspect, in some possible implementations, the second device sends first request information to the first device, where the first request information is used to request the first device to send activation information or deactivation information to the second device.

Based on the above technical solution, for example, in the case where feedback information is transmitted between the first device and the second device through the first feedback resource, when the second device does not have a need to transmit data on the first transmission resource/the first periodic transmission resource, the second device may transmit the first request information to the first device, where the first request information is used to request the first device to transmit deactivation information to the second device, so that the complexity of processing by the first device can be reduced.

In a third aspect, a method for transmitting feedback information is provided, including: the method comprises the steps that first equipment sends first information to second equipment, the first information comprises information of first transmission resources, the first transmission resources are used for the first equipment to receive first data of the second equipment, the first transmission resources are associated with first feedback resources, a first feedback resource set comprises first feedback resources, configuration information of a first resource pool comprises configuration information of the first feedback resource set, the first resource pool is configured for the first equipment and the second equipment, the first feedback resources are used for the first equipment to send the first feedback information, and the first feedback information is NACK information; when the first device does not successfully receive the first data on the first transmission resource, the first device sends first feedback information to the second device.

In one possible implementation, when the first device successfully decodes the first data on the first transmission resource, the first device skips the operation of sending feedback information to the second device, where the feedback information is used to indicate whether the first device successfully receives the first data.

It should be appreciated that when a first device successfully receives first data of a second device on a first transmission resource, the first device skips the operation of sending feedback information to the second device. I.e. the first device does not send feedback information to the second device. That is, in the present application, the first device serves as a receiving side of data, and a NACK-only feedback mode may be configured for a transmitting side of the data, i.e., the second device, specifically, NACK information may be transmitted to the second device only when the first device does not receive or successfully decode the first data, and feedback information may not be transmitted to the second device when the first device successfully receives and decodes the first data, thereby reducing the problem of reduced reliability of feedback information caused by halving power by transmitting a plurality of feedback information.

With reference to the third aspect, in some possible implementations, the first information includes information of a first periodic transmission resource, and the first periodic transmission resource includes the first transmission resource.

Based on the above technical solution, the first information includes information of a first periodic transmission resource, where the first periodic transmission resource includes the first transmission resource, that is, the indication of the NACK-only feedback mode can be performed on the periodic service, so as to improve overall performance of the network.

With reference to the third aspect, in some possible implementations, the first device receives, on a first transmission resource, first indication information of the second device, where the first indication information is used to indicate whether the first data is invalid data, and the first indication information is associated with the first data.

With reference to the third aspect, in some possible implementations of the method, when the first indication information is used to indicate that the first data is invalid data, the first device skips an operation of sending feedback information to the second device.

Based on the above technical scheme, when the second device does not have data to send on the first transmission resource, the second device sends first indication information to the first device on the first transmission resource, where the first indication information is used to indicate whether the first data is invalid, and when the first data is invalid, the first device may not send feedback information to the second device, so as to reduce the amount of feedback information sent by the first device.

With reference to the third aspect, in some possible implementations, the first device sends activation information or deactivation information to the second device,

Wherein the activation information is used for indicating: the first feedback resource is used for the first device to send first feedback information, and the first device sends the first feedback information to the second device on the first feedback resource under the condition that the first device does not receive or successfully decodes the first data on the first transmission resource;

The deactivation information is used to indicate: the first feedback resource is used for the first equipment to send second feedback information, the second feedback information comprises NACK information or ACK information, and the first equipment determines to send the second feedback information to the second equipment according to whether the first data is successfully decoded.

In one possible implementation, the activation information is further used to indicate: in the event that the first device successfully decodes the first data on the first transmission resource, the first device skips the operation of sending feedback information to the second device.

It should be understood that the activation information is used to instruct the first device to feedback the first data using the NACK-only feedback mode, that is, when the first device receives and successfully decodes the first data, the first device skips the operation of sending feedback information to the second device, and when the first device does not receive or successfully decodes the first data, the first device sends NACK information to the second device; the deactivation information is used to deactivate the NACK-only feedback mode, i.e. instruct the first device to determine the second feedback information directly according to whether the first data was successfully decoded, and send the second feedback information to the second device on the first feedback resource.

Based on the above technical solution, the activation information and the deactivation information are used for the first device to indicate to the second device whether the first device feeds back to the second device in a NACK-only mode.

With reference to the third aspect, in some possible implementations, the activation information or the deactivation information is associated with a first periodic transmission resource, the first periodic transmission resource including a first transmission resource.

Based on the technical scheme, the first equipment can flexibly instruct the second equipment whether to adopt the NACK-only mode or not to feed back the transmission resource of the periodic service.

With reference to the third aspect, in some possible implementations, the activation information includes a bit map, the deactivation information includes a bit map, a first bit in the bit map corresponds to the first transmission resource,

When the first bit is a first value, the first bit is used to indicate: the first feedback resource is used for the first device to send first feedback information, in case the first device does not receive or successfully decode the first data on the first transmission resource, the first device sends the first feedback information to the second device on the first feedback resource,

When the first bit is a second value, the first bit is used for indicating that the first feedback resource is used for the first device to send the second feedback information, and the first device determines to send the second feedback information to the second device on the first feedback resource according to whether the first data is successfully decoded.

In one possible implementation, when the first bit is a first value, the first bit is used to indicate: in the event that the first device successfully decodes the first data on the first transmission resource, the first device skips the operation of sending feedback information to the second device.

Based on the technical scheme, the concrete expression forms of the activation information and the deactivation information can be indicated through the values of the bits in the bit map. The specific value of the bit is used for indicating whether the first device adopts a NACK-only feedback mode for the second device on the corresponding transmission resource.

With reference to the third aspect, in some possible implementations, the activation information and the deactivation information are included in medium access control MAC control element information.

With reference to the third aspect, in some possible implementations, the first device receives first request information of the second device, where the first request information is used to request the first device to send deactivation information to the second device.

Based on the above technical solution, for example, in the case where a NACK-only feedback mode is adopted between the first device and the second device, when the second device does not have a need to transmit data on the first transmission resource/the first periodic transmission resource, the second device may transmit first request information to the first device, where the first request information is used to request the first device to transmit deactivation information to the second device, so that the processing complexity of the first device may be reduced.

In a fourth aspect, a method for receiving feedback information includes:

The second device receives first information of the first device, the first information comprises information of first transmission resources, the first transmission resources are used for the second device to send first data to the first device, the first transmission resources are associated with first feedback resources, the first feedback resource set comprises first feedback resources, configuration information of the first resource pool comprises configuration information of the first feedback resource set, the first resource pool is a resource pool configured for the first device and the second device, the first feedback resources are used for the first device to send the first feedback information, and the first feedback information is NACK information;

The second device receives first feedback information of the first device when the first data is not received or successfully decoded by the first device on the first transmission resource.

In one possible implementation, when the first data is successfully decoded by the first device on the first transmission resource, the first device skips the operation of sending feedback information to the second device, and the second device does not receive feedback information about the first data from the first device, i.e. the second device does not need to perform the operation of receiving feedback information about the first data.

It will be appreciated that when the first data is successfully received by the first device on the first transmission resource, the first device skips the operation of sending feedback information to the second device, i.e. the second device does not receive the first feedback information of the first device. That is, in the present application, the first device acts as a receiving side of the first data, and a feedback mode of NACK-only may be configured for the transmitting side of the first data, i.e., the second device. Specifically, the second device receives NACK information from the first device only after the first device has not received or successfully decoded the first data; after the first device successfully receives and decodes the first data, the first device does not send the first feedback information to the second device, that is, the second device cannot receive the first feedback information from the first device, so that the problem of reduced reliability of the feedback information caused by power division of sending a plurality of feedback information is solved.

In a fourth aspect, in some possible implementations, the first information includes information of a first periodic transmission resource, the first periodic transmission resource including the first transmission resource.

In a fourth aspect, in some possible implementations, the second device sends first indication information to the first device on the first transmission resource, where the first indication information is used to indicate whether the first data is invalid data, and the first indication information is associated with the first data.

In some possible implementations, the second device receives activation information or deactivation information of the first device,

The activation information is used for indicating the second equipment to send first data to the first equipment on the first transmission resource, and the second equipment determines that the first feedback information of the first equipment is received on the first feedback resource or the first equipment skips the operation of sending the feedback information, so that the second equipment cannot receive the feedback information about the first data; the deactivation information is used to instruct the second device to determine, after the second device transmits the first data to the first device on the first transmission resource, to receive second feedback information of the first device on the first feedback resource, the second feedback information including NACK information or ACK information.

It should be understood that the activation information is used to instruct the first device to feedback the first data using the NACK-only feedback mode, that is, when the first device receives and successfully decodes the first data, the first device skips the operation of sending feedback information to the second device, and when the first device does not successfully receive the first data, the first device sends first feedback information (NACK information) to the second device; the deactivation information is used to indicate a feedback mode for deactivating NACK-only, i.e. the first device determines the second feedback information directly from whether the first data was successfully decoded, and sends the second feedback information (NACK information or ACK information) to the second device on the first feedback resource.

Based on the above technical solution, the activation information and the deactivation information are used for indicating to the second device by the first device, and the first device feeds back whether the second device adopts the NACK-only mode.

In a fourth aspect, in some possible implementations, the activation information or the deactivation information is related to a first periodic transmission resource, the first periodic transmission resource comprising a first transmission resource.

In a fourth aspect, in some possible implementations, the activation information includes a bit map, the deactivation information includes a bit map, a first bit in the bit map corresponds to the first transmission resource, and when the first bit is a first value, the first bit is used to instruct the second device to receive the first feedback information from the first device on the first feedback resource, or the second device cannot receive the feedback information about the first data on the first feedback resource, and when the first bit is a second value, the first bit is used to instruct the second device to receive the second feedback information of the first device on the first feedback resource.

Based on the technical scheme, the concrete expression forms of the activation information and the deactivation information can be indicated through the values of the bits in the bit map. The bits in the bit map correspond to the transmission resources, for example, the first bit corresponds to the first transmission resource, and the specific value of the bits is used to indicate whether the first device adopts a NACK-only feedback mode for the second device on the transmission resource corresponding to the bit.

In a fourth aspect, in some possible implementations, the activation information and the deactivation information are included in medium access control, MAC, control element information.

In a fourth aspect, in some possible implementations, the second device sends first request information to the first device, where the first request information is used to request the first device to send deactivation information to the second device.

In a fifth aspect, there is provided an apparatus for transmitting feedback information, the apparatus comprising: the receiving and transmitting unit is used for sending first information to the second equipment, the first information comprises information of first transmission resources and information of first feedback resources, the first transmission resources are associated with the first feedback resources, the first feedback resource set comprises the first feedback resources, the configuration information of the first resource pool comprises the configuration information of the first feedback resource set, the first resource pool is a resource pool configured for the first equipment and the second equipment, and the first transmission resources are used for the first equipment to receive first data of the second equipment; and the receiving and transmitting unit is used for transmitting feedback information to the second equipment on the first feedback resource, wherein the feedback information is used for indicating whether the first equipment successfully receives the first data.

In a fifth aspect, in some possible implementations, the transceiver unit is further configured to send second information to the third device, where the second information includes information of a second transmission resource and information of a first feedback resource, the second transmission resource is used by the first device to receive second data from the third device, and the second transmission resource is associated with the first feedback resource;

The receiving and transmitting unit is configured to send feedback information to the second device on the first feedback resource, where the feedback information is used to indicate whether the first device successfully receives the first data, and includes:

And the receiving and transmitting unit is used for transmitting feedback information to the second equipment and the third equipment on the first feedback resource, wherein the feedback information is used for indicating whether the first equipment successfully receives the first data and the second data.

In a fifth aspect, in some possible implementations, the first information includes information of a first periodic transmission resource and information of a first periodic feedback resource, the first periodic transmission resource includes the first transmission resource, and the first periodic feedback resource includes the first feedback resource.

In a fifth aspect, in some possible implementations, the information of the first periodic feedback resource includes information of a third periodic transmission resource, the third periodic transmission resource includes a third transmission resource, the first periodic feedback resource is a periodic feedback resource corresponding to the third periodic transmission resource according to a first mapping relationship in a first periodic feedback resource set, and the first periodic feedback resource set is configured by a first resource pool.

In a fifth aspect, in some possible implementations, the information of the first feedback resource includes information of a third transmission resource, the first feedback resource is a feedback resource corresponding to the third transmission resource according to a first mapping relationship, and the first mapping relationship is a mapping relationship between transmission resources in the first resource pool and the feedback resource.

In a fifth aspect, in some possible implementations, the transceiver unit is configured to receive third data of the fourth device on a third transmission resource;

the receiving and transmitting unit is used for sending feedback information to the fourth device on a first feedback resource, the first feedback resource is determined according to a first mapping relation and a third transmission resource, the first mapping relation is the mapping relation between the transmission resource in the first resource pool and the feedback resource, and the feedback information is used for indicating whether the first device successfully receives the first data, the second data and the third data.

In a fifth aspect, in some possible implementations, the transceiver unit is configured to send feedback information to the second device and the third device on the first feedback resource, where the feedback information is configured to indicate whether the transceiver unit successfully receives the first data and the second data, and includes:

A transceiving unit for transmitting NACK information to the second device and the third device on the first feedback resource when at least one of the following situations is satisfied,

Wherein, the situation includes:

when the transceiver unit does not receive or successfully decode the first data on the first transmission resource; when the transceiver unit does not receive or successfully decode the second data on the second transmission resource.

In a fifth aspect, in some possible implementations, the second information includes information of a second periodic transmission resource and information of a first periodic feedback resource, the second periodic transmission resource includes the second transmission resource, and the first periodic feedback resource includes the first feedback resource.

In a fifth aspect, in some possible implementations, the transceiver unit is configured to receive, on a first transmission resource, first indication information of the second device, where the first indication information is used to indicate whether the first data is invalid data, and the first indication information is associated with the first data.

In a fifth aspect, in some possible implementations, the transceiver is configured to send activation information or deactivation information to the second device, where the activation information or deactivation information is associated with a first transmission resource, the activation information is configured to instruct the first device to send feedback information of first data to the second device on a first feedback resource, the deactivation information is configured to instruct the first device to send feedback information of the first data to the second device on a second feedback resource, the second feedback resource is a feedback resource corresponding to the first transmission resource according to a first mapping relationship in a first feedback resource set, and the first mapping relationship is a mapping relationship between transmission resources in a first resource pool and feedback resources.

In a fifth aspect, in some possible implementations, the activation information or the deactivation information is associated with a first periodic transmission resource, the first periodic transmission resource including a first transmission resource.

In a fifth aspect, in some possible implementations, the activation information includes a bit map, the deactivation information includes a bit map, a first bit in the bit map corresponds to the first transmission resource,

When the first bit takes a first value, the first bit is used to instruct the transceiver unit to send feedback information to the second device on the first feedback resource,

When the first bit takes the second value, the first bit is used for indicating the receiving and transmitting unit to transmit feedback information to the second device on the second feedback resource.

In a fifth aspect, in some possible implementations, the activation information and the deactivation information are included in media intervention control, MAC, control element information.

In a fifth aspect, in some possible implementations, the transceiver unit is further configured to receive first request information of the second device, where the first request information is used to request the first device to send activation information or deactivation information to the second device.

In a sixth aspect, there is provided an apparatus for receiving feedback information, comprising:

The receiving and transmitting unit is used for receiving first information of the first equipment, the first information comprises information of first transmission resources and information of first feedback resources, the first transmission resources are associated with the first feedback resources, the first feedback resource set comprises the first feedback resources, the configuration information of the first resource pool comprises configuration information of the first feedback resource set, the first resource pool is a resource pool configured for the first equipment and the second equipment, and the first transmission resources are used for the second equipment to send first data to the first equipment;

the transceiver unit is further configured to receive feedback information of the first device on the first feedback resource, where the feedback information is used to indicate whether the first device successfully receives the first data.

In a sixth aspect, in some possible implementations, the first information includes information of a first periodic transmission resource and information of a first periodic feedback resource, the first periodic transmission resource includes the first transmission resource, and the first periodic feedback resource includes the first feedback resource.

In a sixth aspect, in some possible implementations, the information of the first feedback resource includes information of a third transmission resource, the first feedback resource is a feedback resource corresponding to the third transmission resource according to a first mapping relationship, and the first mapping relationship is a mapping relationship between transmission resources in the first resource pool and the feedback resource.

In a sixth aspect, in some possible implementations, the information of the first periodic feedback resource includes information of a third periodic transmission resource, the third periodic transmission resource includes a third transmission resource, the first periodic feedback resource is a periodic feedback resource corresponding to the third periodic transmission resource according to a first mapping relationship in the first periodic feedback resource set, and the first periodic feedback resource set is configured by the first resource pool.

In a sixth aspect, in some possible implementations, the transceiver unit is further configured to send first indication information to the first device on the first transmission resource, where the first indication information is used to indicate whether the first data is invalid data.

In a sixth aspect, in some possible implementations, the transceiver unit is further configured to receive activation information or deactivation information of the first device, where the activation information or deactivation information is associated with the first transmission resource, the activation information is used to instruct the second device to receive feedback information from the first device on the first feedback resource, and the deactivation information is used to instruct the second device to receive feedback information of the first device on the second feedback resource, where the second feedback resource is a feedback resource corresponding to the first transmission resource and determined according to a mapping relationship between resources in the first resource pool and the feedback resource.

In a sixth aspect, in some possible implementations, the activation information or the deactivation information is associated with a first periodic transmission resource, the first periodic transmission resource including a first transmission resource.

In some possible implementations, the activation information includes a bit map, the deactivation information includes a bit map, a first bit in the bit map corresponds to the first transmission resource,

When the first bit takes a first value, the first bit is used to instruct the transceiver unit to receive feedback information on the first feedback resource,

When the first bit takes the second value, the first bit is used for indicating the receiving and transmitting unit to receive feedback information on the second feedback resource.

In a sixth aspect, in some possible implementations, the activation information and the deactivation information are included in medium access control MAC control element information.

In a sixth aspect, in some possible implementations, the transceiver unit is further configured to send first request information to the first device, where the first request information is used to request the first device to send activation information or deactivation information to the second device.

In a seventh aspect, there is provided an apparatus for transmitting feedback information, including:

the receiving and transmitting unit is used for sending first information to the second equipment, the first information comprises information of first transmission resources, the first transmission resources are used for the first equipment to receive first data of the second equipment, the first transmission resources are associated with first feedback resources, the first feedback resource set comprises first feedback resources, the configuration information of the first resource pool comprises configuration information of the first feedback resource set, the first resource pool is a resource pool configured for the first equipment and the second equipment, the first feedback resources are used for the first equipment to send the first feedback information, and the first feedback information is NACK information;

The transceiver unit is configured to send the first feedback information to the second device when the transceiver unit does not receive or successfully decode the first data on the first transmission resource.

In one possible implementation, when the transceiver unit successfully receives the first data on the first transmission resource, the transceiver unit skips an operation of sending feedback information to the second device, where the feedback information is used to indicate whether the transceiver unit successfully receives the first data.

In a seventh aspect, in some possible implementations, the first information includes information of a first periodic transmission resource, the first periodic transmission resource including the first transmission resource.

In a seventh aspect, in some possible implementations, the transceiver unit receives, on a first transmission resource, first indication information of the second device, the first indication information being used to indicate whether the first data is invalid data, the first indication information being associated with the first data.

In a seventh aspect, in some possible implementations, when the first indication information is used to indicate that the first data is invalid data, the transceiver unit skips an operation of sending feedback information to the second device.

In some possible implementations of the seventh aspect, the transceiver unit is further configured to send activation information or deactivation information to the second device,

Wherein the activation information is used for indicating: the first feedback resource is used for the receiving and transmitting unit to transmit the first feedback information, and the receiving and transmitting unit transmits the first feedback information to the second device on the first feedback resource under the condition that the receiving and transmitting unit does not receive or successfully decode the first data on the first transmission resource;

The deactivation information is used to indicate: the first feedback resource is used for the receiving and transmitting unit to transmit second feedback information, the second feedback information comprises NACK information or ACK information, and the processing unit determines to transmit the second feedback information to the second device on the first feedback resource according to whether the first data is successfully decoded.

In one possible implementation, the activation information is used to instruct the transceiver unit to skip sending feedback information to the second device in case the transceiver unit successfully decodes the first data on the first transmission resource.

In a seventh aspect, in some possible implementations, the activation information or the deactivation information is associated with a first periodic transmission resource, the first periodic transmission resource including a first transmission resource.

When the first bit is a first value, the first bit is used for indicating that the first feedback resource is used for the transceiver unit to send first feedback information, and the transceiver unit sends the first feedback information to the second device on the first feedback resource under the condition that the transceiver unit does not receive or successfully decode the first data on the first transmission resource;

When the first bit is a second value, the first bit is used for indicating that the first feedback resource is used for transmitting second feedback information by the transceiver unit, and the transceiver unit determines to transmit the second feedback information to the second device on the first feedback resource according to whether the first data is successfully decoded.

In a seventh aspect, in some possible implementations, the activation information and the deactivation information are included in medium access control MAC control element information.

In a seventh aspect, in some possible implementations, the transceiver unit is further configured to receive first request information of the second device, where the first request information is used to request the first device to send deactivation information to the second device.

In an eighth aspect, there is provided an apparatus for receiving feedback information, the apparatus comprising:

The receiving and transmitting unit is used for receiving first information of the first equipment, the first information comprises information of first transmission resources, the first transmission resources are used for sending first data to the first equipment by the second equipment, the first transmission resources are associated with first feedback resources, the first feedback resource set comprises first feedback resources, configuration information of the first resource pool comprises configuration information of the first feedback resource set, the first resource pool is a resource pool configured for the first equipment and the second equipment, the first feedback resources are used for sending the first feedback information by the receiving and transmitting unit, and the first feedback information is NACK information;

And the receiving and transmitting unit is used for receiving the first feedback information of the first device when the first data is not received or is not successfully decoded by the processing unit on the first transmission resource.

In one possible implementation, when the first data is successfully decoded by the processing unit on the first transmission resource, the first device skips the operation of sending the feedback information to the transceiver unit, and the transceiver unit does not receive the feedback information about the first data from the first device, i.e. the transceiver unit does not need to perform the operation of receiving the feedback information about the first data.

In an eighth aspect, in some possible implementations, the first information includes information of a first periodic transmission resource, and the first periodic transmission resource includes the first transmission resource.

In an eighth aspect, in some possible implementations, the transceiver is configured to send first indication information to the first device on the first transmission resource, where the first indication information is used to indicate whether the first data is invalid data, and the first indication information is associated with the first data.

In an eighth aspect, in some possible implementations, the transceiver unit is configured to receive activation information or deactivation information of the first device, where the activation information is configured to instruct the transceiver unit to send, to the first device on the first transmission resource, after the transceiver unit sends first data to the first device, the processing unit determines that first feedback information of the first device is received on the first feedback resource, or the first device skips an operation of sending the feedback information, and then the transceiver unit cannot receive the feedback information about the first data; the deactivation information is used to instruct the transceiving unit to determine, after the transceiving unit transmits the first data to the first device on the first transmission resource, to receive second feedback information of the first device on the first feedback resource, the second feedback information comprising NACK information or ACK information.

In an eighth aspect, in some possible implementations, the activation information or the deactivation information is related to a first periodic transmission resource, the first periodic transmission resource including a first transmission resource.

In an eighth aspect, in some possible implementations, the activation information includes a bit map, the deactivation information includes a bit map, a first bit in the bit map corresponds to the first transmission resource, and when the first bit is a first value, the first bit is used to instruct the transceiver unit to receive the first feedback information from the first device on the first feedback resource, or the transceiver unit cannot receive the feedback information about the first data on the first feedback resource, and when the first bit is a second value, the first bit is used to instruct the transceiver unit to receive the second feedback information of the first device on the first feedback resource.

In an eighth aspect, in some possible implementations, the activation information and the deactivation information are included in medium access control MAC control element information.

In an eighth aspect, in some possible implementations, the transceiver unit is configured to send first request information to the first device, where the first request information is used to request the first device to send deactivation information to the second device.

A ninth aspect provides an apparatus for transmitting and receiving feedback information, the apparatus being adapted to perform the method provided in the first and/or second aspect above, or the apparatus being adapted to perform the method provided in the third and/or fourth aspect above. In particular, the apparatus may include a unit and/or a module, such as a processing unit and/or a transceiver unit (or referred to as a communication unit), for performing the method provided by any of the foregoing implementations of the first, second, third and fourth aspects.

In one implementation, the apparatus is a communication device (e.g., a terminal device, as well as a network device). When the apparatus is a communication device, the communication unit may be a transceiver or a transceiving unit, or an input/output interface; the processing unit may be at least one processor. Alternatively, the transceiver may be a transceiver circuit. Alternatively, the input/output interface may be an input/output circuit.

In another implementation, the apparatus is a chip, a system-on-chip, or a circuit for use in a communication device (e.g., a terminal device, as well as a network device). When the apparatus is a chip, a system-on-chip or a circuit used in a communication device, the communication unit may be an input/output interface, an interface circuit, an output circuit, an input circuit, a pin, or a related circuit on the chip, the system-on-chip or the circuit, or the like; the processing unit may be at least one processor, processing circuit or logic circuit, etc.

In a tenth aspect, there is provided a communication apparatus comprising: a memory for storing a program; at least one processor configured to execute a computer program or instructions stored in a memory to perform a method provided by any implementation manner of the first aspect, the second aspect, the third aspect, and the fourth aspect.

In one implementation, the apparatus is a communication device (e.g., a terminal device, as well as a network device).

In another implementation, the apparatus is a chip, a system-on-chip, or a circuit for use in a communication device (e.g., a terminal device, as well as a network device).

In an eleventh aspect, the present application provides a processor configured to perform the method provided in the above aspects.

The operations such as transmitting and acquiring/receiving, etc. related to the processor may be understood as operations such as output and input of the processor, and may be understood as operations such as transmitting and receiving by the radio frequency circuit and the antenna, if not specifically stated, or if not contradicted by actual function or inherent logic in the related description, which is not limited by the present application.

In a twelfth aspect, there is provided a computer readable storage medium storing program code for execution by a device, the program code comprising instructions for performing the method provided by any one of the implementations of the first, second, third and fourth aspects.

In a thirteenth aspect, there is provided a computer program product comprising instructions which, when run on a computer, cause the computer to perform the method provided by any one of the implementations of the first, second, third and fourth aspects described above.

In a fourteenth aspect, a chip is provided, the chip includes a processor and a communication interface, the processor reads instructions stored on a memory through the communication interface, and performs the method provided by any implementation manner of the first aspect, the second aspect, the third aspect, and the fourth aspect.

Optionally, as an implementation manner, the chip further includes a memory, where a computer program or an instruction is stored in the memory, and the processor is configured to execute the computer program or the instruction stored in the memory, where the processor is configured to execute the method provided in any implementation manner of the first aspect, the second aspect, the third aspect, and the fourth aspect.

Drawings

FIG. 1 is a schematic diagram of a system architecture for use with embodiments of the present application.

Fig. 2 is a schematic diagram of a slot frame structure according to an embodiment of the present application.

Fig. 3 is a schematic diagram of mapping relation between PSFCH resource positions according to an embodiment of the present application.

Fig. 4 is a schematic diagram of PSFCH resource partitioning according to an embodiment of the present application.

Fig. 5 is a schematic flow chart of a method for transmitting and receiving feedback information according to an embodiment of the present application.

Fig. 6 is a schematic flow chart of another method for transmitting and receiving feedback information according to an embodiment of the present application.

Fig. 7 is a schematic diagram of mapping relation between PSFCH resource positions according to another embodiment of the present application.

Fig. 8 is a schematic flow chart of another method for transmitting and receiving feedback information according to an embodiment of the present application.

Fig. 9 is a schematic diagram of a mapping relationship between PSFCH resource locations according to another embodiment of the present application.

Fig. 10 is a schematic diagram of an apparatus 1000 for transmitting and receiving feedback information according to an embodiment of the present application.

Fig. 11 is a schematic diagram of another apparatus 1100 for transmitting and receiving feedback information according to an embodiment of the present application.

Fig. 12 is a schematic diagram of a chip system 1200 according to an embodiment of the application.

Detailed Description

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

The technical scheme of the embodiment of the application can be applied to various communication systems, such as: global mobile communications (global system of mobile communication, GSM) system, code division multiple access (code division multiple access, CDMA) system, wideband code division multiple access (wideband code division multiple access, WCDMA) system, general packet Radio service (GENERAL PACKET Radio service, GPRS), long term evolution (long term evolution, LTE) system, LTE frequency division duplex (frequency division duplex, FDD) system, LTE time division duplex (time division duplex, TDD), universal mobile communications system (universal mobile telecommunication system, UMTS), third generation partnership project (the 3 ^rd generation partnership project,3 GPP) related cellular system, worldwide interoperability for microwave access (worldwide interoperability for microwave access, wiMAX) communication system, wireless assurance (wifi), fifth generation (5th generation,5G) system or New Radio (NR), sixth generation (6th generation,6G) system, and the like.

The technical scheme of the embodiment of the application can be also applied to an LTE side uplink system, an LTE evolution side uplink, a 5G side uplink system or a 5G evolution side uplink system and a future communication system (such as a sixth generation mobile communication system). The technical solution provided by the present application may be applied to device-to-device (D2D) communication, vehicle-to-everything (V2X) communication, machine-to-machine (machine to machine, M2M) communication, machine type communication (MACHINE TYPE communication, MTC), and internet of things (internet of things, ioT), communication systems or other communication systems.

The technical scheme of the embodiment of the application can also be applied to a short-distance wireless communication system, such as a wireless personal area network (wireless personal area network, WPAN), and the WPAN can be used for communication among digital auxiliary devices in small ranges such as telephones, computers and accessory devices. Technologies supporting wireless personal area networks include Bluetooth (Bluetooth), zigBee (ZigBee), ultra Wideband (UWB), infrared data association (INFRARED DATA association, irDA) connection technologies, home radio frequency (home radio frequency, homeRF), and the like. Or a side link (sidelink) communication system, a WiFi communication system, etc. The present application is not particularly limited thereto.

With the development of wireless communication technology, mobile communication networks gradually evolve toward 5G NR systems. In 5G NR systems, a side-link (Sidelink) technology has also been introduced, i.e. communication between terminal devices can be performed directly using radio resources.

As shown in fig. 1, sidelink is different from an uplink (uplink) and a downlink (downlink) between a terminal device and a base station, sidelink refers to a link between the terminal device and the terminal device, and a communication mode in which a corresponding PC5 interface implements short-range service direct communication between the terminal devices.

Similar to Sidelink in the 4G LTE system, the Sidelink of the 5G NR system may be applied to a car networking scenario, or may be applied to a smart factory scenario. The physical channels of Sidelink of the NR system consist mainly of a physical side uplink control channel (PSCCH), a physical side downlink shared channel (PHYSICAL SIDELINK SHARED CHANNEL, PSSCH), a physical side downlink broadcast channel (PHYSICAL SIDELINK broadcast channel, PSBCH), and a physical side downlink feedback channel (PHYSICAL SIDELINK feedback channel, PSFCH). Wherein the first three physical channels already exist in Sidelink of the LTE system, PSFCH is the physical channel newly introduced by the Sidelink technology of the NR system in order to support hybrid automatic repeat request (hybrid automatic repeat request, HARQ) transmission. The PSCCH is used to transmit Sidelink control information primarily, i.e., to transmit first-order Sidelink control information (sidelink control information, sci 1), and the PSCCH channel is used to transmit second-order Sidelink control information (sidelink control information, sci 2) and Sidelink data information primarily. In addition, there are two synchronization signals: primary Sidelink synchronization signal (PRIMARY SIDELINK synchronization signal, PSSS) and secondary Sidelink synchronization signal (secondary sidelink synchronization signal, SSSS).

It should be appreciated that when PSFCH resources are allocated in a timeslot, PSFCH occupies the penultimate orthogonal frequency division multiplexing (Orthogonal frequency division multiplexing, OFDM) symbol (hereinafter referred to as symbol) in the timeslot, which can be also understood as the penultimate symbol that can be used for Sidelink transmission, and an additional GAP (GAP) symbol and automatic gain control (Automatic gain control, AGC) symbol need to be added before the symbol in PSFCH, as shown in fig. 2, which is a schematic diagram of a frame structure of a timeslot according to an embodiment of the present application.

As shown in fig. 2, 14 symbols are included in a slot, wherein PSFCH occupies the 13 th symbol of the slot (i.e., symbol 12), and GAP symbols and AGC symbols are included before the symbols occupied by PSFCH. In this embodiment of the present application, when PSFCH resources are configured in a timeslot, we call the timeslot PSFCH timeslot.

It should also be appreciated that the configuration information in the resource pool indicates which physical resource blocks (physical resource block, PRB) are available for PSFCH transmission on the PSFCH symbols, and that there is an explicit mapping between PSFCH and PSSCH, and the receiving device of the PSSCH determines one PRB to be used for PSFCH transmission according to the mapping between PSSCH and PSFCH.

As an example, the mapping may be based on a period of PSFCH occurrencesAnd the minimum slot interval between the PSSCH and PSFCH to which it maps, which can be configured by sl-MINTIMEGAPPSFCH. The minimum time interval mainly considers that the receiving device needs a certain processing time to decode the PSSCH and generate feedback information on PSFCH, so that the mapping between the PSSCH and PSFCH needs to be maintained for a certain time interval. I.e. one terminal device, after receiving the PSSCH, transmits PSFCH in the first slot containing PSFCH resources and at least the above interval from the last slot of the PSSCH.

For example, fig. 3 is a schematic diagram of mapping relationships between PSFCH resource locations according to an embodiment of the present application. As shown in fig. 3, whenThere are PSFCH resources (slots 0 and 12 are not shown in fig. 2) on slots 0, 4, 8, 12, etc., i.e., slots 0, 4, 8, 12, etc., are PSFCH slots. In addition, sl-MINTIMEGAPPSFCH is configured to be 2 slots, and PSFCH in instant 8 and its corresponding PSSCH need to be spaced at least two slots apart, so PSFCH in slot 8 corresponds to the PSSCH in slots 3-6, i.e., if one Sidelink device receives one PSSCH in slots 3-6, then the Sidelink device sends ACK/NACK information on the corresponding PSFCH resource in slot 8. Similarly, PSFCH in slot 12 corresponds to the PSSCH in slots 7-10, and so on, and will not be described again here.

It should be appreciated that in one PSFCH slot, on the symbol carrying PSFCH, one or more PRBs available for PSFCH are configured in the resource pool configuration information. For example by means of the parameter sl-PSFCH-RB-Set configurationFor transmission PSFCH, there are several PRBs, which are assumed to have indexes/>, respectivelyFurther, the PRBs and subchannels have a mapping relationship with time slots. For N _subch subchannels on one resource pool, and several (less than or equal to) The terminal device can index the time slots (the association relationship of the time slots is described above) asThe PRBs of (c) are allocated to slot i, and subchannel j, of these associated slots. Wherein/>Representing the number of PRBs (physical resource blocks) available for transmission PSFCH corresponding to transmission resources formed by one time slot and sub-channelJ < N _subch > is 0. I.e. the mapping order of time slots and sub-channel resources to PRBs for transmission PSFCH may be in time-domain-first-frequency-domain-second. As shown in fig. 3, assuming 2 sub-channels are configured on the resource pool, there are 8 PRBs available for transmission PSFCH in slot 8 (the 8 PRBs available for transmission PSFCH may be discontinuous).

As an example, from the above description and as shown in fig. 3, it can be seen that the slot 8 is associated with the sub-channel 0 and the sub-channel 1 in the slots 3 to 6, the sub-channel and the mapping of the slot and the PRB are mapped in the order of the first slot mapping and then the frequency domain mapping, that is, the sub-channel 0, the slot 0 corresponds to the PRB0, the sub-channel 0, the slot 1 corresponds to the PRB1, the sub-channel 0, the slot 2 corresponds to the PRB2, the sub-channel 0, and the slot 3 corresponds to the PRB3; sub-channel 1, slot 0 corresponds to PRB4, sub-channel 1, slot 1 corresponds to PRB5, sub-channel 1, slot 2 corresponds to PRB6, sub-channel 1, and slot 3 corresponds to PRB7.

As another example, when 16 PRBs are available for transmission PSFCH for the symbol PSFCH in PSFCH slots, then subchannel 0 corresponds to PRB0&1, subchannel 0 corresponds to PRB2&3, subchannel 0 corresponds to PRB3&4 … …, and slot 3 corresponds to PRB14&15.

It should be understood that the above example is only one mapping relationship between transmission resources (timeslots X subchannels) and feedback resources in a resource pool, but the present application may also be applied to mapping relationships between transmission resources and feedback resources in a resource pool determined according to other manners, which is not limited thereto. It should also be appreciated that when a device receives a PSSCH (e.g., detects SCI1 in the PSCCH and then receives the PSSCH as indicated by the SCI), PSFCH resources for replying to an ACK/NACK may be determined from the time slot corresponding to the PSSCH and the PRB corresponding to one or more sub-channels. Specifically, the PRB corresponding to one PSSCH may be a group of PRBs mapped according to the slot in which the PSSCH is located and the starting subchannel, or the PRB corresponding to one PSSCH may be a plurality of groups of PRBs mapped according to the slot in which the PSSCH is located and the plurality of occupied subchannels, and the method for determining which PRB to send PSFCH resources is specifically adopted may be configured by a higher layer, which is not particularly limited in the present application.

It should also be appreciated that the feedback resources may also include the dimensions of the code domain, e.g., feedback information is typically sent in the form of sequences in one PSFCH PRB, so that the feedback resources may also include different cyclic shift pairs of sequences, e.g., PRB and cyclic shift pairs corresponding to the PSSCH are further determined based on the ID between the transceiving devices.

It should be noted that, in order to facilitate understanding of the technical solution in the embodiment of the present application, a programmable logic controller (Programmable logic controller, PLC) is mainly used as a first device, and a sensor or a conventional device (Sensor or Actuator, S/a) is used as a second device to be described as an example, where the first device and the second device may also be other specific devices or apparatuses, and the present application is not limited specifically.

In future industrial manufacturing scenarios, it may be considered to use Sidelink networks to enable communication between the PLC and the S/a. Determining the position of the feedback resource according to the mapping relation comprises the following problems: the feedback resource is not flexible enough, and the network transmission efficiency is affected.

Meanwhile, in some use cases in industrial manufacturing scenarios, PLCs need to communicate with a large number of S/as. For example, the PLC collects a large amount of state information or data of the S/A, and then regenerates a corresponding instruction according to the state information or data to control the S/A. After the PLC receives these S/a data, HARQ feedback is typically required.

According to the above description, different S/as will transmit data on different PSSCHs, so the PLC needs to feed back PSFCH for multiple PSSCHs, respectively.

It will be appreciated that when the number of second devices is excessive, the following problems may occur:

When the first device needs to feed back multiple PSSCHs on multiple PSFCH, the first device needs to divide its maximum transmit power equally to the multiple PSFCH, resulting in lower power per PSFCH branch and lower reliability of feedback information.

Based on the above analysis, under the condition that the second device is more, there may be a problem that part of data cannot be fed back and reliability of feedback information is lower, and the embodiment of the application provides a method for sending feedback information, so that the number of PSFCH to be sent by the first device on one PSFCH symbol can be reduced.

Fig. 4 is a schematic diagram of PSFCH resource partitioning according to an embodiment of the present application. As shown in fig. 4, the ability to feed back a greater number of PESCH is achieved mainly by configuring more PSFCH resources on the SL resource pool.

As an example, as shown in (1) in fig. 4, the gray portion is a symbol occupied by PSFCH resources, that is, by reducing the period of PSFCH resources, so that the first device branches PSFCH that needs to be transmitted onto a plurality of different time slots, thereby reducing the number of PSFCH that the first device needs to transmit on each time slot or symbol.

As another example, as shown in (2) in fig. 4, an extra PSFCH symbol is added in one PSFCH slot, so that the amount of PSFCH that needs to be fed back by the first device on one PSFCH symbol can be reduced, and the accuracy of feedback information is improved.

It should be appreciated that, according to the example of fig. 4, PSFCH is configured by the system, that is, one resource pool is configured with the same PSFCH resource set for all devices, so once the resource pool is configured with additional PSFCH resources, other devices cannot perform normal data transmission on the additionally configured PSFCH resources. I.e. the method shown in fig. 4, may result in a device reducing the available data transmission resources.

Based on the technical problem of the method shown in fig. 4, the embodiment of the application provides another method for sending and receiving feedback information, which can ensure that the number of PSFCH to be sent by the first device on one PSFCH symbol is reduced without introducing extra PSFCH resource overhead.

Fig. 5 is a schematic flow chart of a method for transmitting and receiving feedback information according to an embodiment of the present application. As shown in fig. 5, the method includes:

501, the first device sends first information to the second device.

Accordingly, the second device receives the first information from the first device.

The first information includes information of a first transmission resource and information of a first feedback resource. The first transmission resource is associated with a first feedback resource, the first transmission resource for the first device to receive first data of the second device.

It should be appreciated that the first device and the second device may be configured with a resource pool (e.g., a first resource pool) on which a first set of feedback resources, e.g., periodic feedback resources configured on the resource pool described above, may be configured, the first set of feedback resources including the first feedback resource. Specifically, the first feedback resource may include one time subunit of one time unit in the time domain, may include one frequency domain subunit of one frequency domain unit in the frequency domain, and may include one cyclic shift pair (CYCLIC SHIFT PAIR) in the code domain. The time unit may be, for example, one slot (e.g., PSFCH slots), and the time subunit may be, for example, one OFDM symbol (e.g., PSFCH symbols). The frequency domain unit may be one subchannel, which is typically the smallest unit occupied by data transmission in the frequency domain in Sidelink, the frequency domain subunit may be one PRB, and one subchannel may include one or more PRBs.

It should be further understood that the first information includes information of a first transmission resource and information of a first feedback resource, where after the second device receives the first information from the first device, data may be transmitted on the first transmission resource indicated in the first information, for example, the first transmission resource may include one time slot or multiple time slots in a time domain and may include one or multiple subchannels in a frequency domain, and hereinafter, mainly described by including one time slot in the time domain and including one or multiple continuous subchannels in the frequency domain as an example.

The first transmission resource is associated with the first feedback resource, that is, the first device may configure the feedback resource associated with the first transmission resource through the first information, so that after the second device sends the first data to the first device on the first transmission resource, the feedback information of the first device may be received on the first feedback resource configured by the first device, instead of receiving the feedback information of the first device on the feedback resource determined according to the resource pool mapping relationship, thereby improving the flexibility of the feedback resource.

In one possible implementation, the first information includes information of a first periodic transmission resource and information of a first periodic feedback resource. Wherein the first periodic transmission resource comprises the first transmission resource and the first periodic feedback resource comprises the first feedback resource.

It should be understood that the first information includes information of a first periodic transmission resource and information of a first periodic feedback resource, the first periodic transmission resource includes at least one transmission resource, and the first periodic feedback resource includes at least one feedback resource, where the at least one transmission resource is associated with the at least one feedback resource one by one.

In one possible implementation, the information of the first periodic transmission resource includes at least one of: offset of time unit, time unit period, starting frequency domain unit position, frequency domain unit number. Taking a time unit as a time slot, a frequency domain unit as a subchannel as an example, for example, the offset of the time unit is 1 time slot, the period of the time unit is 10 time slots, the starting frequency domain unit position is subchannel 1, and the number of the frequency domain units is 3, the first periodic transmission resource is: subchannels 1-3 on slot 1, subchannels 11-13 on slot 11, subchannels 11-13 … … on slot 21

It should also be appreciated that when a first device can allocate resources for a second device, the first device can determine the first transmission resources by itself and send first information including the first transmission resources to the second device.

In another possible implementation manner, the information of the first feedback resource includes information of a third transmission resource, where the first feedback resource is a feedback resource corresponding to the third transmission resource according to a first mapping relationship, the first mapping relationship is a mapping relationship between a transmission resource in a first resource pool and a feedback resource, and the mapping relationship between the transmission resource and the feedback resource in the resource pool is described above with reference to the foregoing, and will not be described herein.

The first periodic feedback resource may include information of a third periodic transmission resource, where the third periodic transmission resource includes a third transmission resource, and the first periodic feedback resource is a periodic feedback resource corresponding to the third periodic transmission resource according to a first mapping relationship in the first periodic feedback resource set.

The second device sends 502 first data to the first device on a first transmission resource.

Accordingly, the first device receives the first data from the second device on the first transmission resource.

Specifically, after the second device receives the first information from the first device, the second device determines to transmit the first data to the first device on the first transmission resource according to the information of the first transmission resource included in the first information.

In one possible implementation, the second device may send first indication information to the first device on the first transmission resource, where the first indication information is used to indicate whether the first data is invalid data, and the first indication information is associated with the first data.

As an example, the second device transmits a PSCCH to the first device on a first transmission resource, and the first device receives the PSCCH of the second device on the first transmission resource. Wherein the PSCCH includes SCI1, the PSCCH/SCI1 can be used to schedule the PSCCH, i.e. after the first device detects the PSCCH, the PSCCH can be received on the first transmission resource according to the SCI1 in the PSCCH, i.e. both the PSCCH and the PSCCH can be located on the first transmission resource, reference can be made to the frame structure in fig. 2. Specifically, the SCI1 may indicate the number of frequency domain subchannels included in the PSSCH, DMRS pattern, and other information. The PSSCH may include SCI2 and first data, where the SCI2 may include a Source ID and a Destination ID for identifying that the PSSCH was transmitted by the second device to the first device. In this step, the SCI1 and/or the SCI2 may further include first indication information, that is, indicating whether the data in the PSSCH is invalid data, and after the first device receives the first indication information on the first transmission resource and determines that the PSSCH is transmitted to itself, the first device may determine that the second device transmits the PSSCH to itself, so that NACK is not fed back to the second device because the PSSCH is not received, and may determine that the data in the PSSCH is invalid data, so that the first device does not need to feed back NACK to the second device even if the data in the PSSCH is partially decoded, thereby avoiding unnecessary feedback and retransmission.

It should also be appreciated that step 502 is an optional step. When the second device does not have data to send on the first transmission resource, the method shown in fig. 5 may not include the step 502, or the second device may send first indication information on the first transmission resource, where the first indication information may be used to indicate that the first data is invalid data. The method of fig. 5 comprises the step 502 when there is data to be transmitted on the first transmission resource for the second data, i.e. the first data is transmitted on the first transmission resource.

503, The first device sends feedback information to the second device on the first feedback resource.

Accordingly, the second device receives feedback information from the first device on the first feedback resource.

Specifically, after the first device sends the first information to the second device, the second device may send the first data to the first device according to the information of the first transmission resource included in the first information. The first device determines feedback information based on whether the first data from the second device was successfully received on the first transmission resource (where successful reception includes receiving the PSSCH after successful detection of the PSCCH and successfully demodulating and decoding SCI2 and data in the PSSCH), and sends the feedback information to the second device.

The feedback information is used for indicating whether the first device successfully receives the first data of the second device.

As an example, the second device sends data #1 on the first transmission resource, and the first device receives data #1 from the second device on the first transmission resource, which indicates that the first device successfully receives data #1 from the second device on the first transmission resource, and the first device sends feedback information to the second device on the first feedback resource, wherein the feedback information is ACK information.

As another example, the second device transmitted data #1 on the first transmission resource, and the first device did not receive or did not successfully decode data #1 from the second device on the first transmission resource, which means that the first device did not receive data #1 from the second device on the first transmission resource, and the first device transmitted feedback information to the second device on the first feedback resource, which is NACK information. The ACK information in the present application may also be referred to as HARQ-ACK information or ACK, and the NACK information may also be referred to as HARQ-NACK information or NACK, which is not particularly limited.

Alternatively, the first device may not send the feedback information when the second device sends the first indication information and indicates that the first data is invalid data in step 502.

Based on the method shown in fig. 5, the method may further include the following steps:

the first device sends activation information or deactivation information to the second device.

Accordingly, the second device receives activation information or deactivation information from the first device.

The activation information or the deactivation information is associated with a first transmission resource, the activation information is used for indicating the first equipment to send feedback information of first data to the second equipment on a first feedback resource, the deactivation information is used for indicating the first equipment to send feedback information of the first data to the second equipment on a second feedback resource, the second feedback resource is a feedback resource corresponding to the first transmission resource according to a first mapping relation in a first feedback resource set, and the first mapping relation is a mapping relation between the transmission resource and the feedback resource in a first resource pool.

It should also be appreciated that the activation information or deactivation information includes indication information of one or more transmission resources. The activation information or deactivation information can further perform activation or deactivation indication on different transmission resources, for example, the first device can configure a plurality of first transmission resources for the second device through the first information, and the activation information or deactivation information can be used for indicating on which first transmission resources feedback resources are determined according to the first mapping relation on the resource pool, and on which first transmission resources feedback resources are determined according to the feedback resources configured in the first information.

In one possible implementation, when a first device determines that the first transmission resource is occupied by another device, the first device sends deactivation information to a second device. Or when the second device has no data to transmit on the first transmission resource, or the second device has performed a resource reselection, the first device may send deactivation information to the second device.

It should be understood that the step can flexibly adjust the mode of determining the feedback resource between the devices according to the interference condition and the load condition through the activation information and the deactivation information, so that the reliability of the feedback information transmission is improved.

In one possible implementation, the activation information or the deactivation information is associated with a first periodic transmission resource, the first periodic transmission resource comprising a first transmission resource.

In another possible implementation manner, the activation information includes a bit map, the deactivation information includes a bit map, a first bit in the bit map corresponds to the first transmission resource, and when the first bit takes a first value, the first bit is used to instruct the first device to send feedback information to the second device on the first feedback resource; when the first bit takes the second value, the first bit is used to instruct the first device to send feedback information to the second device on the second feedback resource.

It should be appreciated that the specific forms of activation information and deactivation information are numerous and are exemplified in detail herein in the form of bitmaps. Bits in the bit map correspond to the transmission resources, e.g., a first bit corresponds to the first transmission resource, the first bit takes a first value, and the first bit is used to instruct the first device to transmit feedback information on the first feedback resource; when the first bit takes the second value, the first bit is used to instruct the first device to transmit feedback information on the second feedback resource.

Wherein, when the first value is "0", the second value is "1"; when the first value is "1", the second value is "0". The first value is different from the second value. The present application does not specifically limit the actual values of the first value and the second value.

It should also be appreciated that the activation information and deactivation information may be included in Media Access Control (MAC) control element information that is transmitted by the first device to the second device.

In yet another possible implementation, the first device receives first request information of the second device, where the first request information is used to request the first device to send the activation information or the deactivation information to the second device.

It should be appreciated that the second device may request the first device to send feedback information to the second device on the first feedback resource or the second feedback resource via the first request information.

It should also be appreciated that in the case of transmitting feedback information between the first device and the second device over the first feedback resource, when the second device does not have a need to transmit data on the first transmission resource/the first periodic transmission resource, the second device may transmit first request information to the first device, the first request information being used to request the first device to transmit deactivation information to the second device, further reducing the processing complexity of the first device.

Based on the method shown in fig. 5 described above, it is also possible for the first device to receive different data from a plurality of different devices (e.g., two or more devices) on different transmission resources. In this case, the amount of feedback information sent by the first device can be further reduced while the flexibility of resource allocation is ensured, so that the feedback reliability is improved. Another method for transmitting and receiving feedback information according to an embodiment of the present application will be described in detail with reference to fig. 6.

As shown in fig. 6, the method includes:

the first device sends 601 first information to the second device.

Specifically, the first information includes information of a first transmission resource and information of a first feedback resource. The first transmission resource is associated with a first feedback resource, the first transmission resource for the first device to receive first data of the second device.

The first device sends 602 second information to the third device.

Accordingly, the third device receives the second information from the first device.

It is to be appreciated that the second information includes information of a second transmission resource for the first device to receive second data from the third device and information of a first feedback resource associated with the second transmission resource.

It should also be appreciated that the first transmission resource is different from the second transmission resource.

Alternatively, the second device and the third device may be the same device or different devices.

It is to be understood that the first information may include information of the first periodic transmission resource and information of the first periodic feedback resource. Wherein the first periodic transmission resource comprises the first transmission resource and the first periodic feedback resource comprises the first feedback resource. The second information may include information of the second periodic transmission resource and information of the first periodic feedback resource. Wherein the second periodic transmission resource comprises the second transmission resource and the first periodic feedback resource comprises the first feedback resource. For a detailed description, reference may be made to the method shown in fig. 5 and not described in detail herein.

It should be noted that the present application is not limited to the sequence of the step 601 and the step 602, that is, the step 601 and the step 602 may be performed simultaneously, or the step 602 may be performed before or after the step 601, which is not particularly limited.

603, The second device sends the first data to the first device on the first transmission resource.

The third device sends 604 second data to the first device on the second transmission resource.

Accordingly, the first device receives second data from the third device on the second transmission resource.

Specifically, after the third device receives the second information from the first device, the third device determines to transmit the second data to the first device on the second transmission resource according to the information of the second transmission resource included in the second information.

It should be understood that, the steps 601 to 604 are similar to the steps 501 and 502 in fig. 5, and the detailed description may refer to the description in fig. 5, which is not repeated herein. Similarly, steps 603 and 604 are optional steps, wherein the method described in fig. 6 may not include steps 603 and 604 when the second device and the third device have no data to transmit on the first transmission resource and the second transmission resource.

It should be noted that the present application is not limited to the sequence of step 603 and step 604, i.e. step 603 and step 604 may be performed simultaneously, or step 604 may precede or follow step 603, which is not particularly limited.

Through the steps, the first device can configure the same feedback resources for the second device and the third device, so that the quantity of feedback information required to be sent by the first device is reduced, the sending power of each feedback information is improved, and the reliability of the feedback information is improved.

Alternatively, the first device may also configure the same feedback resources for more devices, which is not exemplified here.

The fourth device sends 605 third data to the first device on a third transmission resource.

Accordingly, the first device receives third data of the fourth device on the third transmission resource.

The third transmission resource is a transmission resource having a first mapping relation with the first feedback resource.

It should be understood that the first mapping relationship is a mapping relationship between transmission resources and feedback resources in the first resource pool, and the first mapping relationship is a mapping relationship between transmission resources and feedback resources configured by the system.

It should be appreciated that after the first device receives the third data from the fourth device on the third transmission resource, the first device determines to send feedback information to the fourth device on the first feedback resource based on the first mapping relationship and the third transmission resource. The first mapping relationship is a mapping relationship between transmission resources and feedback resources in a first resource pool.

In some possible implementations, the information of the first periodic feedback resource includes information of a third periodic transmission resource, the third periodic transmission resource includes a third transmission resource, the first periodic feedback resource is a periodic feedback resource corresponding to the third periodic transmission resource according to a first mapping relationship in a first periodic feedback resource set, and the first periodic feedback resource set is configured by a first resource pool. Optionally, the first device may also send corresponding indication information to the third device to indicate the third transmission resource and the first feedback resource, which are not described in detail.

Because the first feedback resource is a feedback resource corresponding to the third transmission resource determined according to the first mapping relation on the first resource pool, and the third transmission resource is a transmission resource used by the third device to send the third data to the first device, if other devices (for example, the fifth device and the sixth device) still determine the feedback resource corresponding to the transmission resource according to the first mapping relation, considering that the other devices generally use the transmission resource orthogonal to the third transmission resource (for example, through scheduling of network devices or through sensing and resource selection among devices), the feedback resource determined by the other devices cannot collide with the first feedback resource, and accordingly, the feedback resource corresponding to other transmission resources cannot be occupied by the first device to send feedback information on the first feedback resource, that is, cannot collide with the feedback resource of the other devices.

It should be understood that the fourth device may be the same device as the second device, then the first transmission resource and the third transmission resource are the same transmission resource, or the fourth device may be the same device as the third device, then the second transmission resource and the third transmission resource are the same transmission resource.

The first device sends 606 feedback information on the first feedback resource.

Specifically, the first device determines a plurality of transmission resources according to the indication information sent to the other devices in the previous step, receives data from a plurality of devices (two or more devices) on the plurality of transmission resources, and determines a feedback resource for sending feedback information according to the transmission resources carrying the data. Wherein the first device may receive the first data and the third data sent from the second device and the fourth device on the first transmission resource and the third transmission resource as shown in the above step 603 and step 605, and the first device determines to send feedback information to the second device and the fourth device on the first feedback resource according to the first transmission resource and the third transmission resource. The second device and the fourth device receive feedback information from the first device on the first feedback resource.

It will be appreciated that when the first device also receives second data from the third device on the second transmission resource, the first device transmits the feedback information to the third device on the first feedback resource. Wherein the third device may be used to indicate a class of third devices, i.e. the third device may also comprise one or more devices, collectively referred to as third devices. The second resources may also be used to indicate a class of second resources, that is, the second resources may further include one or more resources, collectively referred to as second resources, and one or more devices included in the third device may each send second data to the first device on one or more resources included in the second transmission resource, and receive feedback information from the first device on the first feedback resource.

It can be seen that the first device determines that the feedback resources corresponding to the first transmission resource, the second transmission resource and the third transmission resource are all first feedback resources, that is, the first device determines feedback information according to specific conditions of the first data, the second data and the third data received on the first transmission resource, the second transmission resource and the third transmission resource, and sends the feedback information to the second device, the third device and the fourth device on the first feedback resource.

It should be appreciated that the first device sends feedback information to the second device, the third device, and the fourth device on the first feedback resource, the feedback information indicating whether the first device successfully received the first data of the second device, the second data of the third device, and the third data of the fourth device.

As an example, when the first device successfully receives and decodes the first data to the second device on the first transmission resource, and the first device successfully receives and decodes the second data of the third device on the second transmission resource, and the first device successfully receives and decodes the third data of the fourth device on the third transmission resource, the feedback information determined by the first device is ACK information; when the first equipment successfully receives and decodes the first data of the second equipment on the first transmission resource, the first equipment successfully receives and decodes the third data of the fourth equipment on the third transmission resource, and the first equipment does not receive the second data of the third equipment on the second transmission resource, the feedback information determined by the first equipment is NACK information; when the first device successfully receives and does not successfully decode the first data of the second device on the first transmission resource, and the first device successfully receives and decodes the second data of the third device on the second transmission resource and the first device successfully receives and decodes the third data of the fourth device on the third transmission resource, the feedback information determined by the first device is NACK information.

And when all data received by the first device on the first transmission resource, the second transmission resource and the third transmission resource associated with the first feedback resource are not received or are successfully received and are not successfully decoded, the feedback information sent by the first device to the second device, the third device and the fourth device on the first feedback resource is NACK information. When the first device successfully receives and successfully decodes the corresponding data on all transmission resources associated with the first feedback resource, the feedback information sent by the first device on the first feedback resource is ACK information.

It should also be understood that when the first device determines that the feedback information is NACK information, the first device sends the feedback information to the second device, the third device, and the fourth device on the first feedback resource, and the second device, the third device, and the fourth device determine whether to need to retransmit data according to the feedback information.

Optionally, the second device, the third device, and the fourth device may further send null packet indication information, and if one of the devices indicates that the data on the corresponding transmission resource is null packet, the first device determines the feedback information without considering the data corresponding to the device. That is, the feedback information is NACK information or ACK information independent of whether the first device received or successfully decoded the data sent by the device on its corresponding transmission resource.

For example, in the step, the second device indicates that the first data is an empty packet, and the first device may determine to send ACK information or NACK information on the first feedback resource only according to the second data sent by the third device and the third data sent by the fourth device; or the third device indicates that the second data is an empty packet, the first device may determine to send ACK information or NACK information on the first feedback resource only according to the first data sent by the second device and the third data sent by the fourth device.

According to the method shown in fig. 6, the first feedback resource may be associated with multiple transmission resources, and the first device may send the same feedback information to multiple devices transmitting different data on the same feedback resource, so as to reduce the amount of feedback information sent by the first device, and improve the reliability of feedback and the resource utilization rate.

Based on the methods shown in fig. 5 and fig. 6, the methods shown in fig. 5 and fig. 6 will be exemplarily described below with reference to a map of PSFCH resource locations shown in fig. 7, where the first device is a PLC and the second device is an S/a case.

As an example, assuming that 8S/as need to transmit first data to the PLC on PSSCHs 0 to 7, respectively, a first transmission resource included in the information #a transmitted to the first S/a by the PLC is a resource corresponding to PSSCH0, and a first feedback resource is a resource corresponding to the rightmost PRB 0; the first transmission resource contained in the information #B sent by the PLC to the second S/A is a resource corresponding to PSSCH 1, and the first feedback resource is a resource corresponding to the rightmost PRB 0; the first transmission resource contained in the information #C sent by the PLC to the third S/A is a resource corresponding to PSSCH 2, and the first feedback resource is a resource corresponding to the rightmost PRB 0; the first transmission resource included in the information #d sent by the PLC to the fourth S/a is a resource corresponding to the PSSCH 3, and the first feedback resource is a resource corresponding to the rightmost PRB 0.

Correspondingly, the PLC sends information #E to the fifth S/A, wherein the information #E comprises resources corresponding to PSSCH4 as first transmission resources and resources corresponding to rightmost PRB 4 as first feedback resources; the PLC sends information #F to the sixth S/A, wherein the information #F comprises resources corresponding to PSSCH5 as first transmission resources and resources corresponding to rightmost PRB 4 as first feedback resources; the first transmission resource contained in the information #G sent by the PLC to the seventh S/A is the resource corresponding to the PSSCH6, and the first feedback resource is the resource corresponding to the rightmost PRB 4; the PLC transmits information #h to the eighth S/a, wherein the information #h includes a first transmission resource corresponding to the PSSCH7, and a first feedback resource corresponding to the rightmost PRB 4.

It can be seen that the PLC divides the 8S/As into two groups, namely, the first S/A to the fourth S/A are the first group, and the fifth S/A to the eighth S/A are the second group. The S/a in each group corresponds to the same feedback resource (PRB 0, PRB 4), and the PLC feeds back the PSSCH of one group of S/a transmissions to PSFCH, thereby reducing the number of PLC transmissions PSFCH. Meanwhile, the feedback resource corresponding to each group is a feedback resource determined by PSSCH of one S/A in the group according to a resource pool configuration mapping relation, for example, PRB0 in the first group is a feedback resource position corresponding to PSSCH 0 according to the resource pool configuration mapping relation, so that the feedback resource does not collide with feedback resources of other devices.

Fig. 8 is a schematic flow chart of another method for sending and receiving feedback information according to an embodiment of the present application. As shown in fig. 8, the method includes:

801, the first device sends information #1 to the second device.

Accordingly, the second device receives the information #1 from the first device.

Wherein the information #1 includes information of a first transmission resource for the first device to receive first data of the second device.

Wherein the information #1 is used to indicate a feedback mode in which the first device will NACK-only data sent by the second device on the first transmission resource.

It should be appreciated that the first transmission resource may comprise one time slot or a plurality of time slots in the time domain and one or more sub-channels in the frequency domain, and hereinafter, the description will be mainly given by taking the example that the first transmission resource comprises one time slot in the time domain and one or more consecutive sub-channels in the frequency domain.

In one possible implementation, the information #1 includes information of a first periodic transmission resource including the first transmission resource.

It should be appreciated that the information #1 includes information of the first periodic transmission resource, which includes the first transmission resource, i.e. the transmission resource of the periodic service can be flexibly indicated to improve the overall performance of the network.

For example, the information of the first periodic transmission resource may include information such as an offset of time units, a period (e.g., the number of included time units) of the first periodic transmission resource, a starting subchannel position of the first periodic transmission resource in the frequency domain, and the number of included subchannels.

The second device sends 802 first data to the first device on a first transmission resource.

Accordingly, the first device receives the first data of the second device on the first transmission resource.

Specifically, after the second device receives the information #1 from the first device, the second device determines to transmit the first data to the second device on the first transmission resource according to the information of the first transmission resource included in the information # 1. The second device transmitting the first data to the first device on the first transmission resource may include: the second device sends a PSCCH and a PSCCH on a first transmission resource, where the PSCCH includes a SCI1, and the PSCCH/SCI1 is used for scheduling the PSCCH, for example, including information such as a frequency domain location of the PSCCH, a priority of data in the PSCCH, and the PSSCH includes a SCI2 and first data, where the SCI2 may include a source ID corresponding to the second device, a destination ID corresponding to the first device, and so on.

In one possible implementation, the second device may send, to the first device, first indication information on the first transmission resource, the first indication information indicating whether the first data is invalid data or whether the first data portion is a null packet, the first indication information being associated with the first data. For example, the second device indicates in SCI1 and or in SCI2 whether the first data is invalid data.

It should be appreciated that when the second device does not have data to transmit on the first transmission resource, the second device transmits first indication information to the first device on the first transmission resource, where the first indication information is used to indicate whether the first data is invalid, and when the first data is invalid, the first device may not transmit feedback information to the second device, so as to reduce the amount of feedback information transmitted by the first device.

It should also be appreciated that step 802 is an optional step. When the second device does not have data to send on the first transmission resource, the method shown in fig. 8 may not include the step 802, or the second device may send first indication information on the first transmission resource, where the first indication information may be used to indicate that the first data is invalid data. The method of fig. 8 includes the step 802 when there is data to be transmitted on the first transmission resource for the second data, i.e. the first data is transmitted on the first transmission resource.

803, The first device determines whether to send feedback information #1 to the second device.

Specifically, the first device determines whether to transmit feedback information #1 to the second device according to the reception result on the first transmission resource, the feedback information #1 including only NACK information.

For example, the first device performs blind detection of the PSCCH on the first transmission resource, and if the PSCCH is detected, receives a PSCCH according to SCI1 in the PSCCH, where the PSCCH includes SCI2 and data (e.g., transport blocks, transmission block, TB). If the source ID in SCI2 corresponds to the second device and the destination ID corresponds to the first device, the data in the PSSCH is the first data sent by the second device to the first device.

In the method shown in fig. 8, the first device performs feedback in NACK-only mode for the signal received on the first transmission resource, further according to whether the first data from the second device is successfully received, which may include the following two cases:

Case one

803# A, the first device transmits feedback information #1 to the second device, the feedback information #1 being NACK information.

Accordingly, the second device receives feedback information #1 from the first device.

Specifically, when the first device does not receive the first data on the first transmission resource (e.g., no PSCCH is detected, or a PSCCH is detected but the ID in SCI2 does not correspond to the second device and the first device), or when the first device receives the first data on the first transmission resource but does not successfully decode the first data, the first device sends feedback information #1 to the second device, where the feedback information #1 is used to indicate that the first device did not receive or successfully decode the first data of the second device.

For example, if the first device does not detect the PSCCH on the first transmission resource or does not detect that the SCI2 includes the corresponding ID, the first device may determine that the first data sent by the second device to the first device is not received, and then the first device sends feedback information #1 on the first feedback resource, where the feedback information #1 is NACK information.

For another example, when the first device detects the PSCCH on the first transmission resource and also detects that the source ID and the destination ID in the SCI2 may also correspond to the second device and the first device, respectively, the first device may determine to receive, on the first transmission resource, first data sent by the second device to the first device, then the first device may decode the first data, and if the decoding is unsuccessful, the first device sends feedback information #1 on the first feedback resource, where the feedback information #1 is NACK information.

It will be appreciated that when a first device determines that first data was not successfully received or decoded on a first transmission resource, the first device sends feedback information #1 to a second device on a feedback resource (e.g., a first feedback resource) corresponding to the first transmission resource. The feedback information #1 is used to indicate that the first device did not successfully receive or did not successfully decode the first data. After the second device receives the feedback information #1, the second device may retransmit the first data to the first device on the first transmission resource.

It should be further understood that the feedback resource may be a feedback resource configured by the system/resource pool and having a mapping relationship with the first transmission resource, or the feedback resource may be a feedback resource similar to the first device indicated by the indication information and having an association relationship with the first transmission resource in fig. 5, or the feedback resource may be a feedback resource indicated by the network device and having an association relationship with the first transmission resource by the indication information, which is not particularly limited in this application.

Case two

803# B, the first device skips the operation of transmitting feedback information to the second device.

Specifically, when the first device successfully receives the first data on the first transmission resource and successfully decodes the first data, the first device skips an operation of transmitting feedback information to the second device. I.e. the first device does not need to send feedback information to the second device. The feedback information is used to indicate whether the first device successfully received the first data.

It should be appreciated that the first device skips sending feedback information to the second device when the first device successfully receives and successfully decodes the first data on the first transmission resource.

It should also be appreciated that step 803#b is an internal implementation procedure of the first device, and after the first device successfully receives the first data of the second device on the first transmission resource and successfully decodes the first data, the first device does not have any operation of feedback information about the first data, that is, during the implementation procedure of the specific operation, there is no transmission operation of feedback information between the first device and the second device.

Alternatively, the first device may not send the feedback information after the second device sends the first indication information to the first device and indicates that the first data is invalid data or null packets at 802.

Based on the method shown in fig. 8, the method may further include the following steps 804 and 805:

The first device sends 804 activation information or deactivation information to the second device.

It will be appreciated that the activation information is used to activate a NACK-only feedback mode between the first device and the second device and the deactivation information is used to deactivate a NACK-only feedback mode between the first device and the second device.

Wherein the activation information is used for indicating: in case the first device successfully receives and decodes the first data on the first transmission resource, the first device skips the operation of sending feedback information to the second device, i.e. the first device performs the above-mentioned step 803#b. The activation information is also used to indicate: in case the first device does not successfully receive the first data on said first transmission resource, or successfully receives but does not decode the first data successfully, the first device sends feedback information #1 to the second device, i.e. the first device performs step 803# a described above.

The deactivation information is used for indicating the first device to determine feedback information #2 according to whether the first data is successfully decoded on the first transmission resource, and sending the feedback information #2 to the second device, wherein the feedback information #2 comprises ACK information or NACK information. As an example, when a first device successfully decodes first data on a first transmission resource, the first device transmits feedback information #2 to a second device on the first transmission resource, the feedback information #2 including ACK information; when the first device does not successfully decode the first data on the first transmission resource, the first device transmits feedback information #2 to the second device on the first transmission resource, the feedback information #2 including NACK information.

In another possible implementation, the activation information includes a bit map, and the deactivation information includes a bit map, a first bit in the bit map corresponding to the first transmission resource, the first bit being used to indicate when the first bit takes a first value: the first device transmits feedback information #1 to the second device on the first feedback resource in case that the first device does not receive or successfully decode the first data on the first transmission resource, and skips an operation of transmitting the feedback information to the second device in case that the first device successfully decodes the first data on the first transmission resource; when the first bit takes the second value, the first bit is used for indicating the first device to determine to send feedback information #2 to the second device according to whether the first data is successfully decoded.

In yet another possible implementation, the activation information includes a bit map, the deactivation information includes a bit map, and a first bit in the bit map corresponds to a first periodic transmission resource, the first periodic transmission resource including a first transmission resource.

It should be appreciated that the specific forms of activation information and deactivation information are numerous and are exemplified in detail herein in the form of bitmaps. The bits in the bit map correspond to the transmission resources, for example, the first bits correspond to the first transmission resources, and when the first bits take the first value, the first bits are used to indicate that if the first device successfully decodes the first data of the second device on the first transmission resources, the first device performs step 803#b as described above; if the first device did not successfully receive or received but did not successfully decode the first data of the second device on the first transmission resource, the first device performs step 804# a as described above. When the first bit takes the second value, the first bit is used for indicating the first device to send ACK information or NACK information to the second device according to whether the first data of the second device is successfully decoded on the first transmission resource.

It should be understood that the second device may request, through the first request information, whether the first device only performs feedback on the case where the first device did not successfully receive the first data.

It should also be appreciated that in the event that the network feedback resources are abundant, the second device sends first request information to the first device requesting the first device to send deactivation information to the second device, e.g., the second device may send first request information to the first device requesting the first device to send activation information requesting that the NACK-only feedback mode be activated. When the second device does not have a data transmission requirement to the first device, the second device transmits first request information to the first device, wherein the first request information is used for requesting the first device to transmit deactivation information to the second device to request the deactivation of the NACK-only feedback mode, so that the processing complexity of the first device can be reduced.

Based on the method shown in fig. 8, the method shown in fig. 8 will be exemplarily described below with reference to a map of PSFCH resource locations shown in fig. 9, taking the first device as a PLC and the second device as an S/a.

As shown in fig. 9, assuming that 8S/as need to transmit first data to the PLC on PSSCHs 0 to 7, respectively, the PLC transmits information #1a to the first S/a, where the information #1a includes a first transmission resource being a resource corresponding to PSSCH0, and a first feedback resource being a resource corresponding to the rightmost PRB 0; the first transmission resource contained in the information #1b sent to the second S/A by the PLC is a resource corresponding to PSSCH 1, and the first feedback resource is a resource corresponding to the rightmost PRB 1; the first transmission resource contained in the information #1c sent to the third S/A by the PLC is a resource corresponding to PSSCH 2, and the first feedback resource is a resource corresponding to the rightmost PRB 2; the first transmission resource included in the information #1d sent by the PLC to the fourth S/a is a resource corresponding to the PSSCH3, the first feedback resource is a resource … corresponding to the rightmost PRB3, the first transmission resource included in the information #1h sent by the PLC to the eighth S/a is a resource corresponding to the PSSCH 7, and the first feedback resource is a resource corresponding to the rightmost PRB 7.

When the PLC successfully receives and decodes the PSSCH on one transmission resource, the PLC skips the operation of transmitting feedback information to the S/a, i.e., does not transmit feedback information to the S/a. The PLC may send NACK information to the S/a on the feedback resources if it did not successfully receive or successfully receive but did not successfully decode the corresponding data on the first transmission resource. The position of the feedback resource can be determined according to the mapping relation of the resource pool configuration and the position of the transmission resource of the S/A. For example, in fig. 8, since only 3 PSSCHs are not successfully received, the PLC only needs to transmit 3 NACK messages, but in the prior art, 8 feedback messages need to be transmitted, so that the number of PLC transmissions PSFCH can be reduced in comparison with the embodiment of the present application.

It will be appreciated that some optional features of the various embodiments of the application may, in some circumstances, be independent of other features or may, in some circumstances, be combined with other features without limitation.

It is also to be understood that the aspects of the embodiments of the application may be used in any reasonable combination, and that the explanation or illustration of the various terms presented in the embodiments may be referred to or explained in the various embodiments without limitation.

It should also be understood that, in the foregoing embodiments of the method and operations implemented by a device (a terminal device or a network device), the method and operations may also be implemented by a component (e.g., a chip or a circuit) of the device, which is not limited thereto.

Corresponding to the methods given by the above method embodiments, the embodiments of the present application also provide corresponding apparatuses, where the apparatuses include corresponding modules for executing the above method embodiments. The module may be software, hardware, or a combination of software and hardware. It will be appreciated that the technical features described in the method embodiments described above are equally applicable to the device embodiments described below.

The method for transmitting and receiving feedback information provided by the embodiment of the present application is described in detail above with reference to fig. 5 to 9, and the apparatus for transmitting and receiving feedback information provided by the embodiment of the present application is described in detail below with reference to fig. 10 to 12. It should be understood that the descriptions of the apparatus embodiments and the descriptions of the method embodiments correspond to each other, and thus, descriptions of details not shown may be referred to the above method embodiments, and for the sake of brevity, some parts of the descriptions are omitted.

Fig. 10 is a schematic block diagram of an apparatus for transmitting and receiving feedback information according to an embodiment of the present application. The apparatus 1000 comprises a transceiver unit 1010, which transceiver unit 1010 may be adapted to implement the respective communication functions. The transceiver unit 1010 may also be referred to as a communication interface or a communication unit.

Optionally, the apparatus 1000 may further comprise a processing unit 1020, where the processing unit 1020 may be configured to perform data processing.

Optionally, the apparatus 1000 further includes a storage unit, where the storage unit may be configured to store instructions and/or data, and the processing unit 1020 may read the instructions and/or data in the storage unit, so that the apparatus implements actions of different terminal devices in the foregoing method embodiments, for example, actions of the first device and the second device.

The apparatus 1000 may be configured to perform the actions performed by the first device and the second device in the above method embodiments, where the apparatus 1000 may be the first device, the second device, or a component of the first device and the second device, the transceiver 1010 is configured to perform operations related to the transceiver of the first device and the second device in the above method embodiments, and the processing unit 820 is configured to perform operations related to the processing of the first device and the second device in the above method embodiments.

It should also be appreciated that the apparatus 1000 herein is embodied in the form of functional units. The term "unit" herein may refer to an Application Specific Integrated Circuit (ASIC), an electronic circuit, a processor (e.g., a shared, dedicated, or group processor, etc.) and memory that execute one or more software or firmware programs, a combinational logic circuit, and/or other suitable components that support the described functionality. In an alternative example, it may be understood by those skilled in the art that the apparatus 1000 may be specifically configured to be a first device and a second device in the foregoing embodiments of the method and may be used to execute each flow and/or step corresponding to the first device and the second device in the foregoing embodiments of the method, or the apparatus 1000 may be specifically configured to be a first device and a second device in the foregoing embodiments of the method and may be used to execute each flow and/or step corresponding to the first device and the second device in the foregoing embodiments of the method and are not repeated herein.

The apparatus 1000 of each of the above aspects has a function of implementing the respective steps performed by the first device and the second device in the above method, or the apparatus 1000 of each of the above aspects has a function of implementing the respective steps performed by the first device and the second device in the above method. The functions may be implemented by hardware, or may be implemented by hardware executing corresponding software. The hardware or software comprises one or more modules corresponding to the functions; for example, the transceiver unit may be replaced by a transceiver (e.g., a transmitting unit in the transceiver unit may be replaced by a transmitter, a receiving unit in the transceiver unit may be replaced by a receiver), and other units, such as a processing unit, etc., may be replaced by a processor, to perform the transceiver operations and related processing operations in the various method embodiments, respectively.

The transceiver 1010 may be a transceiver circuit (e.g., may include a receiving circuit and a transmitting circuit), and the processing unit may be a processing circuit.

It should be noted that the apparatus in fig. 10 may be a network element or a device in the foregoing embodiment, or may be a chip or a chip system, for example: system on chip (SoC). The receiving and transmitting unit can be an input and output circuit and a communication interface; the processing unit is an integrated processor or microprocessor or integrated circuit on the chip. And are not limited herein.

As shown in fig. 11, an embodiment of the present application provides another communication device 1100. The apparatus 1100 comprises a processor 1110, the processor 1110 being coupled to a memory 1120, the memory 1120 being for storing a computer program or instructions and/or data, the processor 1110 being for executing the computer program or instructions stored by the memory 1120 or for reading the data stored by the memory 1120 for performing the methods in the method embodiments above.

Optionally, the processor 1110 is one or more.

Optionally, the memory 1120 is one or more.

Alternatively, the memory 1120 may be integrated with the processor 1110 or provided separately.

Optionally, as shown in fig. 11, the apparatus 1100 further comprises a transceiver 1130, the transceiver 1130 being for receiving and/or transmitting signals. For example, the processor 1110 is configured to control the transceiver 1130 to receive and/or transmit signals.

As an aspect, the apparatus 1100 is configured to implement the operations performed by the first device and the second device in the above method embodiments.

For example, the processor 1110 is configured to execute a computer program or instructions stored in the memory 1120 to implement the operations associated with the first control plane device in the above method embodiments. For example, a first device in any of the embodiments shown in fig. 5-9, or a second device in any of the embodiments shown in fig. 5-9.

It should be appreciated that the processor referred to in the embodiments of the present application may be a central processing unit (central processing unit, CPU), but may also be other general purpose processors, digital signal processors (DIGITAL SIGNAL processors, DSPs), application Specific Integrated Circuits (ASICs), off-the-shelf programmable gate arrays (field programmable GATE ARRAY, FPGAs) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.

It should also be understood that the memory referred to in embodiments of the present application may be volatile memory and/or nonvolatile memory. The nonvolatile memory may be a read-only memory (ROM), a Programmable ROM (PROM), an erasable programmable ROM (erasable PROM), an electrically erasable programmable EPROM (EEPROM), or a flash memory. The volatile memory may be random access memory (random access memory, RAM). For example, RAM may be used as an external cache. By way of example, and not limitation, RAM includes the following forms: static random access memory (STATIC RAM, SRAM), dynamic random access memory (DYNAMIC RAM, DRAM), synchronous Dynamic Random Access Memory (SDRAM), double data rate synchronous dynamic random access memory (double DATA RATE SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (ENHANCED SDRAM, ESDRAM), synchronous link dynamic random access memory (SYNCHLINK DRAM, SLDRAM) and direct memory bus random access memory (direct rambus RAM, DR RAM).

It should be noted that when the processor is a general purpose processor, DSP, ASIC, FPGA or other programmable logic device, discrete gate or transistor logic device, discrete hardware components, the memory (storage module) may be integrated into the processor.

It should also be noted that the memory described herein is intended to comprise, without being limited to, these and any other suitable types of memory.

Referring to fig. 12, an embodiment of the present application provides a chip system 1200. The system-on-chip 1200 (or may also be referred to as a processing system) includes logic 1210 and input/output interface 1220.

Logic 1210 may be a processing circuit in system-on-chip 1200, among other things. Logic 1210 may be coupled to the memory unit to invoke instructions in the memory unit so that system-on-chip 1200 can implement the methods and functions of embodiments of the present application. The input/output interface 1220 may be an input/output circuit in the chip system 1200, and outputs information processed by the chip system 1200, or inputs data or signaling information to be processed into the chip system 1200 for processing.

As an aspect, the chip system 1200 is configured to implement the operations performed by the first device and the second device in the above method embodiments.

For example, the logic 1210 is configured to implement the operations related to processing by the first device in the above method embodiments, such as the operations related to processing by the first device in the embodiments shown in any of fig. 5 to 9; the input/output interface 1220 is used to implement the above operations related to transmission and/or reception by the first device in the method embodiment, such as the operations related to transmission and/or reception performed by the first device in the embodiment shown in any one of fig. 5 to 9.

The embodiment of the application also provides a computer readable storage medium, on which computer instructions for implementing the methods executed by the first device and the second device in the above method embodiments are stored.

For example, the computer program when executed by a computer may enable the computer to implement the method performed by the first device and the second device in the embodiments of the method described above.

The embodiment of the application also provides a computer program product, which contains instructions, and the instructions are executed by a computer to realize the method executed by the first device and the second device in the above method embodiments.

The explanation and beneficial effects of the related content in any of the above-mentioned devices can refer to the corresponding method embodiments provided above, and are not repeated here.

In the several embodiments provided by the present application, it should be understood that the disclosed apparatus and method may be implemented in other manners. For example, the apparatus embodiments described above are merely illustrative, e.g., the division of the units is merely a logical function division, and there may be additional divisions when actually implemented, e.g., multiple units or components may be combined or integrated into another system, or some features may be omitted or not performed. Furthermore, the coupling or direct coupling or communication connection shown or discussed with each other may be through some interface, device or unit indirect coupling or communication connection, which may be in electrical, mechanical or other form.

In the above embodiments, it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When loaded and executed on a computer, produces a flow or function in accordance with embodiments of the present application, in whole or in part. The computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable apparatus. For example, the computer may be a personal computer, a server, or a network device, etc. The computer instructions may be stored in or transmitted from one computer-readable storage medium to another, for example, by wired (e.g., coaxial cable, optical fiber, digital Subscriber Line (DSL)), or wireless (e.g., infrared, wireless, microwave, etc.). 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, etc. that contains an integration of one or more available media. For example, the aforementioned usable media include, but are not limited to, U disk, removable hard disk, read-only memory (ROM), random access memory (random access memory, RAM), magnetic disk or optical disk and the like.

The foregoing is merely illustrative of the present application, and the present application is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A method of transmitting feedback information, comprising:

The method comprises the steps that first equipment sends first information to second equipment, the first information comprises information of first transmission resources and information of first feedback resources, the first transmission resources are associated with the first feedback resources, a first feedback resource set comprises the first feedback resources, configuration information of a first resource pool comprises configuration information of the first feedback resource set, the first resource pool is configured for the first equipment and the second equipment, and the first transmission resources are used for the first equipment to receive first data of the second equipment;

And the first equipment sends feedback information to the second equipment on the first feedback resource, wherein the feedback information is used for indicating whether the first equipment successfully receives the first data.

2. The method of claim 1, wherein the step of determining the position of the substrate comprises,

The method further comprises the steps of: the first device sends second information to a third device, wherein the second information comprises information of a second transmission resource and information of the first feedback resource, the second transmission resource is used for the first device to receive second data from the third device, and the second transmission resource is associated with the first feedback resource;

The first device sending feedback information to the second device on the first feedback resource, the feedback information being used to indicate whether the first device successfully receives the first data, including:

the first device sends the feedback information to the second device and the third device on the first feedback resource, wherein the feedback information is used for indicating whether the first device successfully receives the first data and the second data.

3. The method according to claim 1 or 2, wherein the first information comprises information of a first periodic transmission resource and information of a first periodic feedback resource, the first periodic transmission resource comprising the first transmission resource, the first periodic feedback resource comprising the first feedback resource.

4. The method of claim 3, wherein the information of the first periodic feedback resource includes information of a third periodic transmission resource, the third periodic transmission resource includes a third transmission resource, the first periodic feedback resource is a periodic feedback resource corresponding to the third periodic transmission resource according to a first mapping relationship in a first periodic feedback resource set, the first periodic feedback resource set is configured by the first resource pool, and the first mapping relationship is a mapping relationship between transmission resources and feedback resources in the first resource pool.

5. The method according to any one of claims 1 to 4, wherein the information of the first feedback resource includes information of a third transmission resource, the first feedback resource is a feedback resource corresponding to the third transmission resource according to a first mapping relationship, and the first mapping relationship is a mapping relationship between transmission resources and feedback resources in the first resource pool.

6. The method according to any one of claims 2 to 5, further comprising:

The first device receiving third data of a fourth device on a third transmission resource;

The first device sends the feedback information to the fourth device on the first feedback resource, wherein the first feedback resource is determined according to a first mapping relation and the third transmission resource, the first mapping relation is a mapping relation between the transmission resource in the first resource pool and the feedback resource, and the feedback information is used for indicating whether the first device successfully receives the first data, the second data and the third data.

7. The method of claim 2, wherein the first device transmitting the feedback information to the second device and the third device on the first feedback resource, the feedback information indicating whether the first device successfully received the first data and the second data, comprises:

the first device transmitting NACK information to the second and third devices on the first feedback resource when at least one of the following conditions is met,

Wherein the situation comprises:

8. The method according to any of claims 2 to 7, wherein the second information comprises information of a second periodic transmission resource and information of a first periodic feedback resource, the second periodic transmission resource comprising the second transmission resource, the first periodic feedback resource comprising the first feedback resource.

9. The method according to any one of claims 1 to 8, further comprising:

the first device receives first indication information of the second device on the first transmission resource, wherein the first indication information is used for indicating whether the first data is invalid data or not, and the first indication information is associated with the first data.

10. The method according to any one of claims 1 to 9, further comprising:

The first device sends activation information or deactivation information to the second device, the activation information or deactivation information is associated with the first transmission resource, the activation information is used for indicating the first device to send feedback information of the first data to the second device on the first feedback resource, the deactivation information is used for indicating the first device to send feedback information of the first data to the second device on the second feedback resource, the second feedback resource is a feedback resource corresponding to the first transmission resource according to a first mapping relation in the first feedback resource set, and the first mapping relation is a mapping relation between the transmission resource and the feedback resource in the first resource pool.

11. The method of claim 10, wherein the activation information or deactivation information is associated with a first periodic transmission resource, the first periodic transmission resource comprising the first transmission resource.

12. The method according to claim 10 or 11, wherein the activation information comprises a bit map, wherein the deactivation information comprises the bit map, wherein a first bit in the bit map corresponds to the first transmission resource,

When the first bit takes a first value, the first bit is used to instruct the first device to send the feedback information to the second device on the first feedback resource,

And when the first bit takes a second value, the first bit is used for indicating the first device to send the feedback information to the second device on the second feedback resource.

13. The method according to any of claims 10 to 12, wherein the activation information and the deactivation information are contained in media intervention control, MAC, control element information.

14. The method according to any one of claims 1 to 13, further comprising:

The first device receives first request information of the second device, wherein the first request information is used for requesting the first device to send the activation information or the deactivation information to the second device.

15. A method of receiving feedback information, comprising:

The second device receives first information of a first device, wherein the first information comprises information of a first transmission resource and information of a first feedback resource, the first transmission resource is associated with the first feedback resource, a first feedback resource set comprises the first feedback resource, configuration information of a first resource pool comprises configuration information of the first feedback resource set, the first resource pool is configured for the first device and the second device, and the first transmission resource is used for the second device to send first data to the first device;

16. The method of claim 15, wherein the first information comprises information of a first periodic transmission resource and information of a first periodic feedback resource, the first periodic transmission resource comprising the first transmission resource, the first periodic feedback resource comprising the first feedback resource.

17. The method according to claim 15 or 16, wherein the information of the first feedback resource includes information of a third transmission resource, the first feedback resource is a feedback resource corresponding to the third transmission resource according to a first mapping relationship, and the first mapping relationship is a mapping relationship between transmission resources and feedback resources in the first resource pool.

18. The method according to claim 16 or 17, wherein the information of the first periodic feedback resource includes information of a third periodic transmission resource, the third periodic transmission resource includes the third transmission resource, the first periodic feedback resource is a periodic feedback resource corresponding to the third periodic transmission resource according to a first mapping relation in a first periodic feedback resource set, and the first periodic feedback resource set is configured by the first resource pool.

19. The method according to any one of claims 15 to 18, further comprising:

The second device sends first indication information to the first device on the first transmission resource, wherein the first indication information is used for indicating whether the first data is invalid data or not, and the first indication information is associated with the first data.

20. The method of claim 19, wherein the second device transmitting the first indication information to the first device on the first transmission resource comprises:

The second device sends the first indication information to the first device on the first transmission resource when the second device has no transmission requirement on the first transmission resource.

21. The method according to any one of claims 15 to 20, further comprising:

The second device receives activation information or deactivation information of the first device, where the activation information or deactivation information is associated with the first transmission resource, the activation information is used to instruct the second device to receive the feedback information from the first device on the first feedback resource, and the deactivation information is used to instruct the second device to receive the feedback information of the first device on a second feedback resource, and the second feedback resource is a feedback resource corresponding to the first transmission resource, where the feedback resource is determined according to a mapping relation between transmission resources and feedback resources in the first resource pool.

22. The method of claim 21, wherein the activation information or deactivation information is associated with a first periodic transmission resource, the first periodic transmission resource comprising the first transmission resource.

23. The method of claim 21 or 22, wherein the activation information comprises a bit map, wherein the deactivation information comprises the bit map, wherein a first bit in the bit map corresponds to the first transmission resource,

When the first bit takes a first value, the first bit is used to instruct the second device to receive the feedback information on the first feedback resource,

When the first bit takes a second value, the first bit is used to instruct the second device to receive the feedback information on the second feedback resource.

24. The method according to any of claims 21 to 23, wherein the activation information and the deactivation information are contained in medium access control, MAC, control element information.

25. The method according to any one of claims 15 to 24, further comprising:

the second device sends first request information to the first device, wherein the first request information is used for requesting the first device to send the activation information or the deactivation information to the second device.

26. A method of transmitting feedback information, comprising:

the method comprises the steps that first equipment sends first information to second equipment, the first information comprises information of first transmission resources, the first transmission resources are used for receiving first data sent by the second equipment by the first equipment, the first transmission resources are associated with first feedback resources, a first feedback resource set comprises the first feedback resources, configuration information of a first resource pool comprises configuration information of the first feedback resource set, the first resource pool is a resource pool configured for the first equipment and the second equipment, and the first feedback resources are used for sending the first feedback information by the first equipment;

And when the first device does not receive or successfully decode the first data on the first transmission resource, the first device sends the first feedback information to the second device on the first feedback resource, wherein the first feedback information is NACK information.

27. The method of claim 26, wherein the first device skips sending feedback information to the second device when the first device successfully decodes the first data on the first transmission resource.

28. The method according to claim 26 or 27, wherein the first information comprises information of a first periodic transmission resource, the first periodic transmission resource comprising the first transmission resource.

29. The method according to any one of claims 26 to 28, further comprising:

30. The method of claim 29, wherein the first device skips sending feedback information to the second device when the first indication information is used to indicate that the first data is invalid data.

31. The method according to any one of claims 26 to 30, further comprising:

The first device sends activation information or deactivation information to the second device,

Wherein,

The activation information is used for indicating: the first feedback resource is used for the first device to send the first feedback information, and the first device sends the first feedback information to the second device on the first feedback resource under the condition that the first device does not receive or successfully decodes the first data on the first transmission resource;

The deactivation information is used for indicating: the first feedback resource is used for the first equipment to send second feedback information, the second feedback information comprises NACK information or ACK information, and the first equipment determines to send the second feedback information to the second equipment on the first feedback resource according to whether the first data is successfully decoded.

32. The method of claim 31, wherein the activation information is further used to indicate: the first device skips sending feedback information to the second device if the first device successfully decodes the first data on the first transmission resource.

33. The method of claim 31 or 32, wherein the activation information or the deactivation information is associated with a first periodic transmission resource, the first periodic transmission resource comprising the first transmission resource.

34. The method according to any one of claims 31 to 33, wherein the activation information comprises a bit map, wherein the deactivation information comprises the bit map, wherein a first bit in the bit map corresponds to the first transmission resource,

When the first bit is a first value, the first bit is used for indicating that the first feedback resource is used for the first device to send the first feedback information, and the first device sends the first feedback information to the second device on the first feedback resource under the condition that the first device does not receive or successfully decode the first data on the first transmission resource;

and when the first bit is a second value, the first bit is used for indicating that the first feedback resource is used for the first equipment to send the second feedback information, and the first equipment determines to send the second feedback information to the second equipment on the first feedback resource according to whether the first data is successfully decoded.

35. The method of claim 34, wherein when the first bit is a first value, the first bit is used to indicate: in the case that the first device successfully decodes the first data on a first transmission resource, the first device skips the operation of transmitting feedback information to the second device.

36. The method according to any of claims 31 to 35, wherein the activation information and the deactivation information are contained in medium access control, MAC, control element information.

37. The method according to any one of claims 26 to 36, further comprising:

the first device receives first request information of the second device, wherein the first request information is used for requesting the first device to send the deactivation information to the second device.

38. An apparatus for transmitting feedback information, comprising a processor for executing a computer program or instructions stored in a memory to cause the apparatus to perform the method of any one of claims 1 to 14 or to cause the apparatus to perform the method of any one of claims 26 to 37.

39. An apparatus for receiving feedback information, comprising a processor for executing a computer program or instructions stored in a memory to cause the apparatus to perform the method of any of claims 15 to 25.

40. The apparatus according to claim 38 or 39, further comprising the memory and/or a communication interface, the communication interface being coupled with the processor,

The communication interface is used for inputting and/or outputting information.

41. A computer readable storage medium, having stored thereon a computer program or instructions which, when run on a communication device, cause the communication device to perform the method of any of claims 1 to 14, or cause the communication device to perform the method of any of claims 15 to 25, or cause the communication device to perform the method of any of claims 26 to 37.

42. A computer program product, characterized in that the computer program product comprises a computer program or instructions for performing the method of any one of claims 1 to 14, or for performing the method of any one of claims 15 to 25, or for performing the method of any one of claims 26 to 37.

43. A chip, characterized in that the chip is coupled to a memory for reading and executing program instructions stored in the memory for implementing the method according to any one of claims 1 to 14, or for implementing the method according to any one of claims 15 to 25, or for implementing the method according to any one of claims 26 to 37.