CN111954258A

CN111954258A - Communication method and related equipment

Info

Publication number: CN111954258A
Application number: CN201910403420.7A
Authority: CN
Inventors: 刘南南; 张向东; 常俊仁; 余唱
Original assignee: Huawei Technologies Co Ltd
Current assignee: XFusion Digital Technologies Co Ltd
Priority date: 2019-05-15
Filing date: 2019-05-15
Publication date: 2020-11-17
Anticipated expiration: 2039-05-15
Also published as: CN111954258B; WO2020228557A1

Abstract

The embodiment of the application provides a communication method and related equipment. The method comprises the following steps: the terminal equipment transmits data on the configuration authorization resource of the first link; the terminal device sends first information to a network device, wherein the first information is used for requesting a first retransmission resource of a first link for data which fails to be transmitted on the configuration authorization resource of the first link, and the first link is a direct connection wireless communication link between the terminal device and other terminal devices. By implementing the method, the network equipment can acquire the data transmission condition on the configuration authorized resource, so that reference information can be provided for the network equipment to schedule corresponding retransmission resources possibly subsequently.

Description

Communication method and related equipment

Technical Field

The present application relates to the field of communications technologies, and in particular, to a communication method and a related device.

Background

The vehicle networking (V2X) is a key technology of an intelligent transportation system, is considered to be one of the fields with the most industrial potential and the most clear market demand in an internet of things system, has the characteristics of wide application space, great industrial potential and strong social benefit, and has important significance for promoting the innovative development of the automobile and information communication industry, constructing a new mode and new state of automobile and traffic service, promoting the innovation and application of technologies such as unmanned driving, auxiliary driving, intelligent driving, internet driving, intelligent internet driving, automatic driving, automobile sharing and the like, and improving the traffic efficiency and the safety level. The internet of vehicles generally refers to a communication Network that provides vehicle information through sensors, in-vehicle terminals, and the like mounted on a vehicle, and realizes mutual communication between a vehicle to vehicle (V2V), a vehicle to infrastructure (V2I), a vehicle to Network (V2N), and a vehicle to pedestrian (V2P).

Generally, in a V2X scenario, a communication link for performing direct communication between a terminal device and another terminal device may be referred to as a sidelink or a Sidelink (SL). The wireless communication link between the terminal device and the network device may be referred to as an Uplink (UL) or a Downlink (DL), and since the UL or DL interface may be referred to as a Uu port, the UL or DL may be referred to as a Uu port link.

Hybrid Automatic Repeat Request (HARQ) feedback is supported on a side link in the current internet of vehicles, that is, a Forward Error Correction (FEC) subsystem is introduced into an Automatic Repeat Request (ARQ) system, errors are automatically corrected within an Error Correction capability range, retransmission is required by a transmitting end if the Error Correction range is exceeded, and data is transmitted by using a stop-and-wait protocol (HARQ feedback). In the stop-wait protocol, after a sender sends a Transport Block (TB), the sender stops to wait for an acknowledgement. The receiving end uses the information to confirm the TB positively (for example, 1bit positive Acknowledgement (ACK) or negatively (for example, 1bit Negative Acknowledgement (NACK)), and if the transmitting end receives the ACK, the receiving end is successful in receiving the TB; if the sending end receives the NACK, it indicates that the receiving end fails to receive the TB, and the sending end may retransmit the data, but at present, there is no good mechanism to solve the problem of requesting and scheduling data retransmission resources of the sending end in the internet of vehicles.

Disclosure of Invention

Since the service transmitted by using the dynamic grant resource and the service transmitted by using the configured grant resource may have different delay requirements, reliability requirements, resource size requirements, and the like, in the conventional side link retransmission mechanism, the network device cannot acquire the dynamic grant of the side link and the data transmission condition on the configured grant resource, which results in that the network device cannot perform subsequent size scheduling of the retransmission resource of the side link with reference to the difference between the dynamic grant and the configured grant.

In view of this, the present application provides a communication method and related device, by which a network device can obtain a data transmission condition on an edge link transmission resource, so as to provide reference information for a network device to schedule a corresponding retransmission resource subsequently.

In a first aspect, the present application provides a communication method, which may include: the terminal equipment transmits data on the configuration authorization resource of the first link; the terminal equipment sends first information to network equipment, and the first information indicates that the terminal equipment successfully sends the data on the configuration authorized resource; or, the first information indicates that the terminal device fails to send the data on the configuration authorized resource; or, the first information is used for requesting a first retransmission resource of the first link for the data which fails to be transmitted on the configuration authorization resource of the first link; the first link is a direct connection wireless communication link between the terminal device and other terminal devices. By the method, the network equipment can acquire the data transmission condition on the side link configuration authorized resource, so that reference information can be provided for the network equipment to schedule corresponding retransmission resources possibly subsequently. The method includes that the terminal equipment reports success of edge link transmission to a base station, and the method has the exemplary beneficial effects that the network equipment can release retransmission resources which are scheduled to the terminal equipment before or schedule the retransmission resources to other terminal equipment according to first information reported by the terminal equipment; or, the terminal device reports the edge link transmission failure to the base station, and the exemplary beneficial effect includes that the network device can schedule retransmission resources for the terminal device; alternatively, the terminal device requests retransmission resources from the base station, and exemplary beneficial effects include enabling the network device to schedule the retransmission resources for the terminal device.

In a possible design, the terminal device receives configuration information from the network device, where the configuration information is used to configure the transmission resource of the first information. By the present method, exemplary benefits include: the transmission resource of the first information may be configured such that the first information may be transmitted to the network device through the configured transmission resource.

In one possible design, including: the first information is a first scheduling request SR. By the present method, exemplary benefits include: the network device can obtain the data transmission failure condition on the side link configuration authorized resource through the first SR reported by the terminal device, so that the reference information can be provided for the network device to schedule the first retransmission resource of the first link subsequently.

In one possible design, the configuration information is SR configuration information. By the present method, exemplary benefits include: a transmission resource may be configured for the first SR such that the first SR may be transmitted to the network device through the configured transmission resource.

In one possible design, the transport block size corresponding to the allocated grant resource is not greater than a first threshold; the size of the transport block corresponding to the first retransmission resource is not less than a first threshold. By the present method, exemplary benefits include: the first retransmission resource allocated to the terminal equipment by the network equipment can still meet the current retransmission requirement of the terminal equipment even if the terminal equipment does not report the size of the retransmission resource currently required.

In one possible design, the first information is a first buffer status report BSR; the first BSR includes at least one of: the number of the transmission-failed Transport Blocks (TB) on the configuration authorized resource of the first link, the buffer size of the transmission-failed TB on the configuration authorized resource of the first link, and the total buffer size of all the transmission-failed TBs on the configuration authorized resource of the first link; alternatively, the first BSR includes at least one of: the number of hybrid automatic repeat request (HARQ) processes with transmission failure on the configuration authorized resource of the first link, the buffer size of the HARQ processes with transmission failure on the configuration authorized resource of the first link, and the total buffer size of all the HARQ processes with transmission failure on the configuration authorized resource of the first link. By the present method, exemplary benefits include: the network device can obtain the data transmission failure condition on the side link configuration authorized resource through the first BSR reported by the terminal device, so that the reference information can be provided for the network device to schedule the first retransmission resource of the first link subsequently.

In one possible design, the configuration authorization is a first type of configuration authorization and/or a second type of configuration authorization; wherein, the first type configuration authorization provides side link configuration authorization for the network equipment through Radio Resource Control (RRC) signaling; the second type configuration authorization defines a period of side link configuration authorization for the network device through Radio Resource Control (RRC) signaling, and activates the side link configuration authorization through a Physical Downlink Control Channel (PDCCH) or DCI. By the present method, exemplary benefits include: the network device can acquire the data transmission condition on the first type configuration authorized resource and/or the second type configuration authorized resource of the side link, so that reference information can be provided for the network device to schedule corresponding retransmission resources subsequently and possibly.

In a feasible design, the size of the transport block TB with transmission failure on the granted resources configured for the first link or the size of the TB corresponding to the HARQ process with transmission failure on the granted resources configured for the first link is not greater than a first threshold; the size of the transport block corresponding to the first retransmission resource is not less than a first threshold. By the present method, exemplary benefits include: the retransmission resource distributed to the terminal equipment by the network equipment can still meet the current retransmission requirement of the terminal equipment even if the terminal equipment does not report the size of the retransmission resource required currently.

In a feasible design, the number of the first retransmission resources is equal to the number of failed transport blocks TB or the number of HARQ processes on the configuration granted resource of the first link. By the present method, exemplary benefits include: each transport block TB or HARQ process which fails to transmit of the terminal equipment can acquire reasonable retransmission resources.

In a second aspect, the present application provides a method of communication, which may include: the terminal equipment sends data on the dynamic authorization resource of the first link; the terminal equipment sends second information to the network equipment, wherein the second information indicates that the terminal equipment successfully sends the data on the dynamic authorized resource of the first link; or, the second information indicates that the terminal device fails to send the data on the dynamic authorized resource of the first link; or, the second information is used for requesting a second retransmission resource of the first link for the data which fails to be transmitted on the dynamic authorized resource of the first link; the first link is a direct connection wireless communication link between the terminal device and other terminal devices. By the present method, exemplary benefits include: the network device can acquire the data transmission condition on the side link dynamic authorization resource, so that the reference information can be provided for the corresponding retransmission resource possibly scheduled by the network device subsequently. The method includes that the terminal equipment reports success of edge link transmission to a base station, and the method has the exemplary beneficial effects that the network equipment can release retransmission resources which are scheduled to the terminal equipment before or schedule the retransmission resources to other terminal equipment according to second information reported by the terminal equipment; or, the terminal device reports the edge link transmission failure to the base station, and the exemplary beneficial effect includes that the network device can schedule retransmission resources for the terminal device; alternatively, the terminal device requests retransmission resources from the base station, and exemplary beneficial effects include enabling the network device to schedule the retransmission resources for the terminal device.

In a possible design, the terminal device receives configuration information from the network device, where the configuration information is used to configure the transmission resource of the second information. By the present method, exemplary benefits include: a transmission resource may be configured for the second information such that the second information may be transmitted to the network device through the configured transmission resource.

In one possible design, the second information is a second scheduling request SR. By the present method, exemplary benefits include: the network device can obtain the data transmission failure condition on the side link dynamic authorization resource through the second SR reported by the terminal device, so that the reference information can be provided for the network device to schedule the second retransmission resource of the first link subsequently.

In one possible design, the configuration information is SR configuration information. By the present method, exemplary benefits include: a transmission resource may be configured for the second SR such that the second SR may be transmitted to the network device through the configured transmission resource.

In one possible design, the size of the transport block corresponding to the dynamically granted resource is not greater than a first threshold; the transport block size corresponding to the second retransmission resource is not less than the first threshold. By the present method, exemplary benefits include: the second retransmission resource allocated to the terminal equipment by the network equipment can still meet the current retransmission requirement of the terminal equipment even if the terminal equipment does not report the size of the retransmission resource currently required.

In one possible design, the second information is a second buffer status report BSR; the second BSR includes at least one of: the number of the transmission blocks TB with transmission failure on the dynamic authorized resource of the first link, the buffer size of the transmission blocks TB with transmission failure on the dynamic authorized resource of the first link, and the total buffer size of all the transmission blocks TB with transmission failure on the dynamic authorized resource of the first link; alternatively, the second BSR includes at least one of: the number of hybrid automatic repeat request (HARQ) processes with transmission failure on the dynamic authorized resource of the first link, the buffer size of the HARQ processes with transmission failure on the dynamic authorized resource of the first link, and the total buffer size of all the HARQ processes with transmission failure on the dynamic authorized resource of the first link. By the present method, exemplary benefits include: the network device can obtain the data transmission failure condition on the side link dynamic authorization resource through the second BSR reported by the terminal device, so that the reference information can be provided for the network device to schedule the second retransmission resource of the first link subsequently.

In one possible design, the size of the TB with transmission failure on the dynamically granted resource of the first link or the size of the TB corresponding to the HARQ process with transmission failure on the dynamically granted resource of the first link is not greater than the first threshold; the transport block size corresponding to the second retransmission resource is not less than the first threshold. By the present method, exemplary benefits include: the retransmission resource distributed to the terminal equipment by the network equipment can still meet the current retransmission requirement of the terminal equipment even if the terminal equipment does not report the size of the retransmission resource required currently.

In a possible design, the number of the second retransmission resources is equal to the number of failed transport blocks TB or the number of HARQ processes on the dynamically granted resource of the first link. By the present method, exemplary benefits include: each transport block TB or HARQ process which fails to transmit of the terminal equipment can acquire reasonable retransmission resources.

In a third aspect, the present application provides a communication method, which may include: the method comprises the steps that terminal equipment sends a Buffer Status Report (BSR) to network equipment, wherein the BSR is used for requesting retransmission resources of a first link for data which are transmitted in failure on transmission resources of the first link; the BSR includes at least one of: the number of the HARQ processes with transmission failure, the buffer size of the HARQ processes with transmission failure, and the total buffer size of all the HARQ processes with transmission failure; the first link is a direct connection wireless communication link between the terminal device and other terminal devices. By the present method, exemplary benefits include: the network device can acquire the data transmission condition on the side link transmission resource, so that the reference information can be provided for the corresponding retransmission resource possibly scheduled by the network device.

In one possible design, the size of the transport block corresponding to the HARQ process with the transmission failure is not greater than the first threshold; the size of the transport block corresponding to the retransmission resource is not less than a first threshold. By the present method, exemplary benefits include: the second retransmission resource allocated to the terminal equipment by the network equipment can still meet the current retransmission requirement of the terminal equipment even if the terminal equipment does not report the size of the retransmission resource currently required.

In one possible design, the number of retransmission resources is equal to the number of HARQ processes that failed transmission on the transmission resources of the first link. By the present method, exemplary benefits include: each HARQ process of the terminal equipment with transmission failure can acquire reasonable retransmission resources.

In a fourth aspect, the present application provides a communication method, which may include: the network equipment receives first information from the terminal equipment, wherein the first information indicates that the terminal equipment successfully sends the data on the configuration authorization resource of the first link; or, the first information indicates that the terminal device fails to send the data on the configuration authorized resource of the first link; or, the first information is used for requesting a first retransmission resource of the first link for the data which fails to be transmitted on the configuration authorization resource of the first link; the network device allocates a first retransmission resource for the terminal device according to the first information, wherein the first retransmission resource is used for the terminal device to retransmit data failed in transmission on the configuration authorization resource of the first link; the first link is a direct connection wireless communication link between the terminal device and other terminal devices. By the present method, exemplary benefits include: the method and the device can enable the network equipment to obtain the data transmission condition on the side link configuration authorized resource, and thus can provide reference information for the network equipment to schedule corresponding retransmission resources subsequently and possibly, and further ensure the reliability of side link transmission. The method includes that the terminal equipment reports success of edge link transmission to a base station, and the method has the exemplary beneficial effects that the network equipment can release retransmission resources which are scheduled to the terminal equipment before or schedule the retransmission resources to other terminal equipment according to first information reported by the terminal equipment; or, the terminal device reports the edge link transmission failure to the base station, and the exemplary beneficial effect includes that the network device can schedule retransmission resources for the terminal device; alternatively, the terminal device requests retransmission resources from the base station, and exemplary beneficial effects include enabling the network device to schedule the retransmission resources for the terminal device.

In a possible design, the network device sends configuration information to the terminal device, where the configuration information is used to configure sending resources of the first information. By the present method, exemplary benefits include: a transmission resource may be configured for the first information such that the first information may be transmitted to the network device through the configured transmission resource.

In one possible design, the first information is a first scheduling request SR. By the present method, exemplary benefits include: the network device can obtain the data transmission failure condition on the side link configuration authorized resource through the first SR reported by the terminal device, so that the reference information can be provided for the network device to schedule the first retransmission resource of the first link subsequently.

In one possible design, the first information is a first buffer status report BSR; the first BSR includes at least one of: the number of the failed transmission TBs on the granted resources for configuration of the first link, the buffer size of the failed transmission TBs on the granted resources for configuration of the first link, and the total buffer size of all the failed transmission TBs on the granted resources for configuration of the first link; alternatively, the first BSR includes at least one of: the number of hybrid automatic repeat request (HARQ) processes with transmission failure on the configuration authorized resource of the first link, the buffer size of the HARQ processes with transmission failure on the configuration authorized resource of the first link, and the total buffer size of all the HARQ processes with transmission failure on the configuration authorized resource of the first link. By the present method, exemplary benefits include: the network device can obtain the data transmission failure condition on the side link configuration authorized resource through the first BSR reported by the terminal device, so that the reference information can be provided for the network device to schedule the first retransmission resource of the first link subsequently.

In a feasible design, the size of the TB with transmission failure on the configuration granted resource of the first link or the size of the TB corresponding to the HARQ process with transmission failure on the configuration granted resource of the first link is not greater than the first threshold; the size of the transport block corresponding to the first retransmission resource is not less than a first threshold. By the present method, exemplary benefits include: the retransmission resource distributed to the terminal equipment by the network equipment can still meet the current retransmission requirement of the terminal equipment even if the terminal equipment does not report the size of the retransmission resource required currently.

In a fifth aspect, the present application provides a communication method, which may include: the network equipment receives second information from the terminal equipment, wherein the second information indicates that the terminal equipment successfully sends the data on the dynamic authorized resource of the first link; or, the second information indicates that the terminal device fails to send the data on the dynamic authorized resource of the first link; or, the second information is used for requesting a second retransmission resource of the first link for the data which fails to be transmitted on the dynamic authorized resource of the first link; the network device allocates a second retransmission resource for the terminal device according to the second information, wherein the second retransmission resource is used for the terminal device to retransmit data failed in transmission on the dynamic authorization resource of the first link; the first link is a direct connection wireless communication link between the terminal device and other terminal devices. By the present method, exemplary benefits include: the method and the device can enable the network device to obtain the data transmission condition on the side link dynamic authorization resource, and thus can provide reference information for the network device to schedule corresponding retransmission resources subsequently and possibly, and further ensure the reliability of side link transmission. The method includes that the terminal equipment reports success of edge link transmission to a base station, and the method has the exemplary beneficial effects that the network equipment can release retransmission resources which are scheduled to the terminal equipment before or schedule the retransmission resources to other terminal equipment according to second information reported by the terminal equipment; or, the terminal device reports the edge link transmission failure to the base station, and the exemplary beneficial effect includes that the network device can schedule retransmission resources for the terminal device; alternatively, the terminal device requests retransmission resources from the base station, and exemplary beneficial effects include enabling the network device to schedule the retransmission resources for the terminal device.

In a possible design, the network device sends configuration information to the terminal device, where the configuration information is used to configure sending resources of the second information. By the present method, exemplary benefits include: a transmission resource may be configured for the second information such that the second information may be transmitted to the network device through the configured transmission resource.

In one possible design, the second information is a second buffer status report BSR; the second BSR includes at least one of: the number of the failed transmission TBs on the dynamic authorized resource of the first link, the buffer size of the failed transmission TBs on the dynamic authorized resource of the first link, and the total buffer size of all the failed transmission TBs on the dynamic authorized resource of the first link; alternatively, the second BSR includes at least one of: the number of hybrid automatic repeat request (HARQ) processes with transmission failure on the dynamic authorized resource of the first link, the buffer size of the HARQ processes with transmission failure on the dynamic authorized resource of the first link, and the total buffer size of all the HARQ processes with transmission failure on the dynamic authorized resource of the first link. By the present method, exemplary benefits include: the network device can obtain the data transmission failure condition on the side link dynamic authorization resource through the second BSR reported by the terminal device, so that the reference information can be provided for the network device to schedule the second retransmission resource of the first link subsequently.

In a possible design, the number of the second retransmission resources of the first link is equal to the number of the transport blocks TB or the number of HARQ processes failing transmission on the dynamically granted resources of the first link. By the present method, exemplary benefits include: each transport block TB or HARQ process which fails to transmit of the terminal equipment can acquire reasonable retransmission resources.

In a sixth aspect, the present application provides a communication method, which may include: the network equipment receives a Buffer Status Report (BSR) from terminal equipment, wherein the BSR is used for requesting retransmission resources of a first link for data which are transmitted in failure on transmission resources of the first link; the BSR includes at least one of: the number of the HARQ processes with transmission failure, the buffer size of the HARQ processes with transmission failure, and the total buffer size of all the HARQ processes with transmission failure; the network device allocates retransmission resources for the terminal device according to the BSR, where the retransmission resources are used for the terminal device to retransmit data that fails to be transmitted on the transmission resources of the first link on the retransmission resources; the first link is a direct connection wireless communication link between the terminal device and other terminal devices. By the present method, exemplary benefits include: the method and the device can enable the network device to obtain the data transmission condition on the side link transmission resource, and thus can provide reference information for the network device to schedule corresponding retransmission resources subsequently and possibly, and further ensure the reliability of side link transmission.

In a seventh aspect, the present application provides a communication method, which may include: the network equipment allocates initial transmission resources of a first link to the terminal equipment, and the size of a transmission block corresponding to the transmission resources is not larger than a first threshold value; the network device allocates retransmission resources for the terminal device, and the size of a transmission block corresponding to the retransmission resources is not less than the first threshold. By the present method, exemplary benefits include: the retransmission resource distributed to the terminal equipment by the network equipment can still meet the current retransmission requirement of the terminal equipment even if the terminal equipment does not report the size of the retransmission resource required currently.

In a feasible design, before the network device allocates the retransmission resource to the terminal device, the network device receives request information from the terminal device, where the request information is used to request the network device to allocate the retransmission resource to the terminal device. By the present method, exemplary benefits include: the network equipment can allocate retransmission resources to the terminal equipment according to the request of the terminal equipment, so that the reliability of side link transmission is ensured.

In one possible design, the network device sends configuration information to the terminal device, where the configuration information is used to configure sending resources of the request information. By the present method, exemplary benefits include: the request information of the terminal device can be sent to the network device on the sending resource configured by the network device.

In one possible design, the request message is a scheduling request SR, or a buffer status report BSR, or a feedback indication (e.g., ACK, NACK) indicating that the terminal device successfully transmits data on the transmission resources of the first link; alternatively, the feedback indication is used to indicate that the terminal device failed to transmit data on the transmission resource of the first link. By the present method, exemplary benefits include: the terminal equipment can flexibly select different modes and carriers to request retransmission resources from the network equipment.

In one possible design, the configuration information of the SR is common (e.g., the same SR configuration as requesting SL new transmission resources) or configuration information of an SR dedicated to requesting SL retransmission resources. By the present method, exemplary benefits include: the network device may be caused to process the request information according to the resource on which the SR information is received.

In an eighth aspect, the present application provides a communication method, which may include: the network equipment sends configuration information to the terminal equipment; the configuration information is used for configuring the terminal equipment to retransmit data which is failed to be transmitted on a first link on a configuration authorization resource of the first link; or, the terminal device is configured to retransmit the data failed to be transmitted on the first link on the retransmission resource of the first link dynamically scheduled by the base station; or the terminal device is configured to send a first link retransmission request or a first link transmission failure indication to the network device after the data transmission on the first link fails; the first link is a direct connection wireless communication link between the terminal device and other terminal devices.

In one possible design, the failed data transmission on the first link may include failed data transmission on a configured authorized resource of the first link and/or failed data transmission on a dynamic authorized resource of the first link.

In one possible design, the configuration information is used to configure the terminal device to perform retransmission of data that fails to be transmitted on the first link on retransmission resources of the first link dynamically scheduled by the base station, and includes: when the terminal equipment fails to transmit data on the first link, the terminal equipment sends a first link retransmission request or a first link transmission failure indication to the network equipment.

In a ninth aspect, the present application provides a terminal device, comprising: a sending module, configured to send data on the configuration authorized resource of the first link; the sending module is further configured to send first information to the network device, where the first information indicates that the terminal device successfully sends the data on the configured authorized resource; or, the first information indicates that the terminal device fails to send the data on the configuration authorized resource; or, the first information is used for requesting a first retransmission resource of the first link for the data which fails to be transmitted on the configuration authorization resource of the first link; the first link is a direct connection wireless communication link between the terminal device and other terminal devices.

In a tenth aspect, the present application provides a terminal device, including: a sending module, configured to send data on a dynamic authorized resource of a first link; the sending module is further configured to send second information to the network device, where the second information indicates that the data sent by the terminal device on the dynamic authorized resource is successful; or, the second information indicates that the terminal device fails to send the data on the dynamic authorized resource; or, the second information is used for requesting a second retransmission resource of the first link for the data which fails to be transmitted on the dynamic authorized resource of the first link; the first link is a direct connection wireless communication link between the terminal device and other terminal devices.

In an eleventh aspect, the present application provides a terminal device, including: a sending module, configured to send data on a transmission resource of a first link; the sending module is further configured to send a buffer status report BSR to the network device, where the BSR is configured to request retransmission resources of a first link for data that is failed to be transmitted on transmission resources of the first link; the BSR includes at least one of: the number of the HARQ processes with transmission failure, the buffer size of the HARQ processes with transmission failure, and the total buffer size of all the HARQ processes with transmission failure; the first link is a direct connection wireless communication link between the terminal device and other terminal devices.

In a twelfth aspect, the present application provides a network device, including: a receiving module, configured to receive first information from a terminal device, where the first information indicates that the terminal device successfully sends the data on the configuration authorized resource of the first link; or, the first information indicates that the terminal device fails to send the data on the configuration authorized resource of the first link; or, the first information is used for requesting a first retransmission resource of the first link for the data which fails to be transmitted on the configuration authorization resource of the first link; a processing module, configured to allocate a first retransmission resource to the terminal device according to the first information, where the first retransmission resource is used for the terminal device to retransmit data that fails to be transmitted on the configuration authorized resource of the first link; the first link is a direct connection wireless communication link between the terminal device and other terminal devices.

In a thirteenth aspect, the present application provides a network device, comprising: a receiving module, configured to receive second information from a terminal device, where the second information indicates that the terminal device successfully sends the data on the dynamic authorized resource of the first link; or, the second information indicates that the terminal device fails to send the data on the dynamic authorized resource of the first link; or, the second information is used for requesting a second retransmission resource of the first link for the data which fails to be transmitted on the dynamic authorized resource of the first link; a processing module, configured to allocate a second retransmission resource to the terminal device according to the second information, where the second retransmission resource is used for the terminal device to retransmit data that is failed to be transmitted on the dynamic grant resource of the first link; the first link is a direct connection wireless communication link between the terminal device and other terminal devices.

In a fourteenth aspect, the present application provides a network device, comprising: a receiving module, configured to receive a buffer status report BSR from a terminal device, where the BSR is configured to request retransmission resources of a first link for data that has failed to be transmitted on transmission resources of the first link; the BSR includes at least one of: the number of the HARQ processes with transmission failure, the buffer size of the HARQ processes with transmission failure, and the total buffer size of all the HARQ processes with transmission failure; a processing module, configured to allocate retransmission resources to the terminal device according to the BSR, where the retransmission resources are used for the terminal device to retransmit HARQ processes that fail transmission on the transmission resources of the first link; the first link is a direct connection wireless communication link between the terminal device and other terminal devices.

In a fifteenth aspect, the present application provides a network device, comprising: the processing module is used for allocating initial transmission resources of a first link for the terminal equipment, and the size of a transmission block corresponding to the transmission resources is not larger than a first threshold value; the processing module is further configured to allocate retransmission resources to the terminal device, where the size of a transport block corresponding to the retransmission resources is not smaller than the first threshold. The first link is a direct connection wireless communication link between the terminal device and other terminal devices.

In a sixteenth aspect, the present application provides a network device, comprising: the sending module is used for sending the configuration information to the terminal equipment; the configuration information is used for configuring the terminal equipment to retransmit data which is failed to be transmitted on a first link on a configuration authorization resource of the first link; or, the terminal device is configured to retransmit the data failed to be transmitted on the first link on the retransmission resource of the first link dynamically scheduled by the base station; or the terminal device is configured to send a first link retransmission request or a first link transmission failure indication to the network device after the data transmission on the first link fails; the first link is a direct connection wireless communication link between the terminal device and other terminal devices.

In a seventeenth aspect, the present application provides a communication device, which may include: at least one processor and power supply circuitry for supplying power to the processor, the program instructions involved being executable in the at least one processor to cause the communication apparatus to implement the functionality of the terminal device or the network device in the method according to the first to eighth aspects and any of its designs. Optionally, the communication device may further comprise at least one memory storing the program instructions involved. The communication device may be the terminal device or the network device or the system chip thereof in the methods of the first to eighth aspects and any design thereof.

In an eighteenth aspect, the present application provides a system-on-chip, which can be applied in a communication device, and the system-on-chip includes: at least one processor and power supply circuitry for supplying power to the processor, the program instructions involved being executable in the at least one processor to cause the communication apparatus to implement the functionality of the terminal device or the network device in the method according to the first to eighth aspects and any of its designs. Optionally, the system-on-chip may further include at least one memory storing the related program instructions.

Nineteenth aspect, the present application provides a computer storage medium, which can be applied in a communication apparatus, and the computer readable storage medium stores related program instructions, and the related program instructions are executed to make the communication apparatus implement the functions of the terminal device or the network device according to the methods of the first to eighth aspects and any design thereof.

In a twentieth aspect, the present application provides a computer program product comprising program instructions involved, which when executed, implement the functionality of the terminal device or the network device according to the methods of the first to eighth aspects and any of the designs thereof.

In a twenty-first aspect, the present application provides a communication system, which may include one or more of: a terminal device as in the ninth to eleventh aspects or a network device as in the twelfth to sixteenth aspects or a communication apparatus as in the seventeenth aspect or a system chip as in the eighteenth aspect or a computer storage medium as in the nineteenth aspect or a computer program product as in the twentieth aspect.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate exemplary embodiments, or features and aspects of the application and, together with the description, serve to explain the principles of the application, it being understood that the drawings in the following description are illustrative of only some embodiments of the application and that others may be incorporated in the practice of the invention without the use of inventive faculty.

FIG. 1A is a schematic diagram of one possible communication system of the present application;

FIG. 1B is a schematic diagram of one possible communication system of the present application;

fig. 2 is a flowchart illustrating a communication method according to an embodiment of the present application;

fig. 3 is a flowchart illustrating a communication method according to an embodiment of the present application;

fig. 4A to 4I are schematic diagrams illustrating a flow of a BSR according to an embodiment of the present application;

fig. 5A to 5I are schematic diagrams illustrating a flow of a BSR according to an embodiment of the present disclosure;

fig. 6A to 6D are schematic diagrams illustrating a flow of a BSR according to an embodiment of the present disclosure;

fig. 7 is a schematic block diagram of a terminal device provided in an embodiment of the present application;

fig. 8 is a schematic block diagram of a network device provided in an embodiment of the present application;

fig. 9 is a schematic block diagram of a communication device provided in an embodiment of the present application;

fig. 10 is a schematic block diagram of a system chip provided in an embodiment of the present application.

Detailed Description

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

In the description of the present application, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, nor order. The "first information" and the like in the present application have information with different numbers, which are only used for contextual convenience, and the different order numbers themselves do not have a specific technical meaning, for example, the first information, the second information and the like can be understood as one or any one of a series of information. The function or role of the numbered information, for example, may be determined by the context of the numbered information and/or by the function of the information carried by the numbered information; it is understood that, in a specific implementation, the information with different numbers may also be the same or the same type of information, and the information with different numbers may also be carried in the same message or the same type of message, or the information with different numbers may also be the same message or the same type of message, which is not limited in this application.

The terms "operation 201" or "operation 202" in this application are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance of an operation or order of execution of operations.

The term "and/or" in this application is only one kind of association relationship describing the associated object, and means that there may be three kinds of relationships, for example, a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.

In the present application, "at least one" means one or more, "a plurality" means two or more. "and/or" describes the association relationship of the associated objects, meaning that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone, wherein A and B can be singular or plural. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship. "at least one of the following" or similar expressions refer to any combination of these items, including any combination of the singular or plural items. For example, at least one (one) of a, b, or c, may represent: a, b, c, a-b, a-c, b-c, or a-b-c, wherein a, b, c may be single or multiple.

In the present application, "not more than" means less than or equal to both of these cases, and "not less than" means more than or equal to both of these cases.

The terms in the present application, such as "first mode" or "second mode", are used for descriptive purposes only and are not to be construed as meaning only the terms described in the present application.

The terms "may include" or "have" and any variations thereof herein, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

The technical scheme of the embodiment of the application can be applied to various communication systems, for example: a global system for mobile communications (GSM) system, a Code Division Multiple Access (CDMA) system, a Wideband Code Division Multiple Access (WCDMA) system, a General Packet Radio Service (GPRS), a long term evolution (long term evolution, LTE) system, a LTE Frequency Division Duplex (FDD) system, a LTE Time Division Duplex (TDD) system, a universal mobile telecommunications system (universal mobile telecommunications system, UMTS), a worldwide interoperability for microwave access (UMTS) communication system, a WiMAX) communication system, or a fifth generation (5G) mobile communication system, and other new radio service (UMTS) systems are not limited to the use of the present application for mobile communication (NR) systems.

In this application, the terminal device is typically a device having a capability of communicating with a network side device, and may be, for example, a User Equipment (UE), an access terminal device, a subscriber unit, a subscriber station, a mobile station, a remote terminal device, a mobile device, a user terminal device, a wireless terminal device, a user agent, or a user equipment. The terminal device may also be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a handheld device with wireless communication function, a computing device, other processing devices connected to a wireless modem, a vehicle-mounted device, a wearable device, a terminal device in a future 5G network, a terminal device in a future evolved Public Land Mobile Network (PLMN), or a vehicle device in a vehicle networking (V2X), and the like, and the specific implementation form of the terminal device is not limited in the present embodiment.

In this application, for example, a network device or a radio access network device generally refers to a device that can be used for communicating with a terminal device, such as a base station (BTS) in a GSM system or a CDMA system, a Node B (NB) in a WCDMA system, an evolved node B (eNB) in an LTE system, a radio controller in a Cloud Radio Access Network (CRAN) scenario, a relay station, an access point, a vehicle-mounted device, a Road Side Unit (RSU), a wearable device, a radio access network device in a future 5G network, such as an NR nodeB, a gNB or a gnnodeb, a Control Unit (CU), a Distributed Unit (DU), or a radio access network device in a PLMN network that is evolved in the future, and the embodiment of the present application does not limit a specific implementation form of the radio access network device.

For example, the features or contents identified by broken lines in the drawings related to the embodiments of the present application can be understood as optional operations or optional structures of the embodiments.

For example, the layer 1 message in this application refers to a PHY layer message in general, and the layer 2 message in this application refers to signaling of a MAC layer, an RLC layer, or a PDCP layer, such as a MAC CE message in general. Layer 3 messages in this application refer generally to signaling at the RRC layer, or NAS layer, such as RRC messages.

In the present application, "data transmission" may include the following three cases: data transmission, data reception, or both.

For example, the method provided by the present application may be applied to a communication system as shown in fig. 1A or fig. 1B, where the system operates to implement mutual communication between a terminal device and a terminal device, and the following two cases may be included:

in the first case: in the coverage area of the network device, the terminal device and the terminal device communicate with each other through the network device relay, as shown in fig. 1A, the first terminal device and the second terminal device communicate with each other through the network device relay, illustratively, an uplink (as indicated by an arrow) communication link between the first terminal device and the network device is an Uplink (UL), a downlink (as indicated by an arrow) communication link between the network device and the second terminal device is a Downlink (DL), and the first terminal device or the second terminal device wirelessly communicates with the network device through the Uu interface, respectively.

In the second case: and the terminal equipment is in the coverage range of the network equipment or not in the coverage range of the network equipment, and direct communication is carried out between the terminal equipment and the terminal equipment. As shown in fig. 1B, a first terminal device and a second terminal device perform direct communication, for example, a communication link between the first terminal device and the second terminal device may be referred to as a sidelink or a Side Link (SL), and for example, the first terminal device and the second terminal device perform wireless communication through a PC5 port.

The SL communication resource for performing wireless direct communication between the first terminal device and the second terminal device may be scheduled by the network device, for example, the terminal device may be within a coverage area of the network device, a wireless direct communication process between the terminal device and the terminal device may be controlled by the network device, and the first terminal device serving as the data sending end may send a control signal and a data signal to the second terminal device serving as the data receiving end on the SL communication resource configured by the network device. This mode in which the base station schedules SL transmission resources may be referred to as a first mode. Optionally, the first mode may be a mode1 resource allocation mode or a mode3 resource allocation mode specified in the current standards set by the third Generation Partnership Project (3 GPP).

For example, the base station scheduling SL transmission resources may include two different types of transmission resources, dynamic grant and configuration grant. The dynamic authorization is characterized in that the network device needs to allocate resources individually for each data transmission of the terminal device, and the method is characterized by "one-time allocation and one-time use", for example, the network device may dynamically allocate edge link transmission resources to the terminal device through Downlink Control Information (DCI), where the DCI may be carried by a physical downlink control channel. The configuration grant may be that each data transmission of the terminal device does not always require the network device to allocate resources individually, and after the network device allocates resources for the terminal device at a certain time, the terminal device may use the allocated resources for a period of time in the future, and is characterized by "one-time allocation and multiple-time usage", for example, the configuration grant may include type1 configuration grant (SL configured grant type-1), type2 configuration grant (SL configured grant type-2), no grant (SL grant free), and Semi-Persistent Scheduling (SL Semi-Persistent SPS). the type1 configuration grant can be a side link configuration grant that the network device directly configures to the terminal device through Radio Resource Control (RRC) signaling, and the terminal device can directly use the configuration grant resource to transmit data without additional activation (e.g., through PDCCH/DCI activation). the type2 configuration grant can be a period that the network device defines the configuration grant through RRC signaling, and then activates the configuration grant through PDCCH/DCI, so that the terminal device cannot directly use the configuration grant resource to transmit data, and can only use the configuration grant resource after activation. The grant free may be a side link configuration grant directly configured by the network device to the terminal device through Radio Resource Control (RRC) signaling, and the terminal device may directly transmit data using the configuration grant resource without additional activation (e.g., activation through PDCCH/DCI). The semi-persistent scheduling may be that the network device defines a period of configuration authorization through RRC signaling, and activates the configuration authorization through PDCCH/DCI, and the terminal device cannot directly use the configuration authorization resource to transmit data and can only use the data after activation. The main difference between dynamic and configuration grants is the grant, i.e. the flexibility of resource allocation and the overhead of resource allocation. Dynamic authorization, wherein the network needs to allocate authorization for each data transmission of the terminal equipment, and the resource allocation is flexible, but the resource allocation overhead is large; configuration authorization and one-time authorization allocation of network equipment, the terminal can be used for multiple times, the resource allocation cost is low, however, the allocated resources are not changed or adjusted within a long time, and the resource allocation is not flexible. The dynamic authorization is allocated by using a Physical Channel (such as a PDCCH, Physical Downlink Control Channel, or Physical Downlink Control Channel), and the allocation is relatively quick; the configuration grant is configured using higher layer signaling (such as RRC signaling) or higher layer signaling (such as RRC signaling) plus a physical channel (such as PDCCH), and resource allocation is slow.

The SL communication Resource for performing wireless direct communication between the first terminal device and the second terminal device may also be determined by the terminal device, rather than being scheduled and controlled by the network device, for example, the terminal device is in a communication coverage of the network device, the network device configures an SL Resource pool for the terminal device through a System broadcast (SIB) message or a Radio Resource Control (RRC) signaling dedicated to the terminal device, and the first terminal device serving as a data transmitting end may obtain the SL communication Resource from a master SL Resource pool and transmit a Control signal and a data signal to the second terminal device serving as a data receiving end; or, for example, the terminal device is outside the communication coverage of the network device, the first terminal device as the data sending end autonomously obtains the side link communication resource from the preconfigured SL resource pool to send the control signal, and/or the data signal is sent to the second terminal device as the data receiving end. Illustratively, the end devices may be aware of or contend for the edge link transmission resources. Optionally, the first terminal device sends the control signal by contending with another terminal device to obtain the appropriate SL communication resource in the SL resource pool, and/or the data signal, for example, the higher the priority of the V2X service to be transmitted in the terminal device is, the greater the chance that the first terminal device contends for the appropriate SL communication resource in the SL resource pool is. Optionally, the first terminal device may also pre-store the SL resource pool information, or the network device pre-configures the SL resource pool when the first terminal device accesses the network. The mode in which the terminal device determines the SL transmission resource by itself may be referred to as a second mode; optionally, the second mode may be a mode2 resource configuration mode or a mode4 resource configuration mode specified in the standard established by the current 3 GPP.

In this application, the communication between the terminal device and the terminal device may be unicast communication, or may also be multicast communication, or broadcast communication.

The first type of configuration grant in the present application may be a configuration grant (SL configured grant type-1) or an authorization exempt (SL grant free) for type1 in NR. The second type of configuration grant in the present application may be a type2 configuration grant (SL configured grant type-2) or a semi-persistent scheduling (SPS) configuration grant in LTE.

It should be understood that fig. 1A and 1B are only exemplary network architecture diagrams, and the network architecture further includes other network element devices or functional units, which are not limited in this application.

Fig. 2 is a schematic flow chart of a communication method provided in the present application, and the following specifically describes a technical solution of an embodiment of the present application with reference to fig. 2. For example, taking the first link as an edge link as an example, the communication method 200 corresponding to fig. 2 may include:

operation 201: the terminal device transmits data on SL.

For example, the terminal device may transmit data using the initial transmission resource on the SL. The initial transmission resource can be a configuration authorization resource or a dynamic authorization resource;

optionally, the size of the transport block corresponding to the configured authorized resource is not greater than the first threshold;

optionally, the size of the transport block corresponding to the dynamic grant resource is not greater than the first threshold;

optionally, the size of the TB with transmission failure on the configuration authorized resource of the SL or the size of the TB corresponding to the HARQ process with transmission failure on the configuration authorized resource of the SL is not greater than the first threshold;

optionally, the size of the TB with transmission failure on the SL dynamic grant resource or the size of the TB corresponding to the HARQ process with transmission failure on the SL configuration grant resource is not greater than the first threshold;

wherein, optionally, the first threshold may be preconfigured. For example, the first threshold is protocol specified. Alternatively, the device manufacturer may store the first threshold in the network device before the network device is shipped from the factory. Alternatively, the other network device may pre-configure the first threshold into the network device when the network device has a network.

Operation 202: the terminal device sends information to the network device.

The information may be the first information, and/or the second information. The first information and the second information may be sent separately or together, and may be sent by being carried in different messages or by being carried in the same message.

Optionally, the terminal device may send the information to the network device after receiving NACK feedback of other terminal devices communicating with the terminal device.

Illustratively, the first information is used for requesting a first retransmission resource of the SL for data failed to be transmitted on the configuration grant resource of the SL. The second information is used to request a second retransmission resource of the SL for data that failed to be transmitted on the dynamic grant resource of the SL. The first information is used to request a first retransmission resource of the SL for data that fails to be transmitted on the configuration authorized resource of the SL, and the first information may implicitly indicate that the terminal device fails to transmit the data on the configuration authorized resource. The second information is used to request the second retransmission resource of the SL for the data failed to be transmitted on the dynamic authorized resource of the SL, and the second information may implicitly indicate that the terminal device failed to transmit the data on the dynamic authorized resource.

Illustratively, the first information is used to indicate that the terminal device successfully transmits the data on the configuration authorized resource; or, the first information indicates that the terminal device fails to send the data on the configuration authorized resource. The second information is used for indicating that the terminal equipment successfully sends the data on the dynamic authorized resource; or, the second information indicates that the terminal device fails to send the data on the dynamic authorized resource. The first information may also implicitly indicate that the first retransmission resource of the SL is requested for the data that is failed to be transmitted on the configuration authorized resource of the SL. The second information may also implicitly indicate that the second retransmission resource of the SL is requested for the data that is failed to be transmitted on the dynamic authorized resource of the SL.

A. The first information and/or the second information is a Scheduling Request (SR);

optionally, the first information is used to request a first retransmission resource of the first link for data that fails to be transmitted on the configuration grant resource of the first link.

Optionally, the second information is used to request a second retransmission resource of the first link for data that fails to be transmitted on the dynamic grant resource of the first link.

Optionally, two SR configurations (a first SR configuration and a second SR configuration) dedicated to SL retransmission indication are set, and the SL retransmission indication of configuration authorization and dynamic authorization respectively corresponds to the SR configuration.

Optionally, at least for the retransmission of the configuration grant, an SR configuration dedicated to the SL retransmission indication is set, corresponding to the SL retransmission indication of the configuration grant.

Optionally, the first SR requests the first retransmission resource of the first link for the data that fails to be transmitted on the configuration authorization resource of the first link.

Optionally, the second SR requests the second retransmission resource of the first link for the data that fails to be transmitted on the dynamic grant resource of the first link.

Alternatively, for the retransmission of the dynamic grant, a method of binding a plurality of HARQ process identifications (process IDs) with different SR configurations respectively may be used, that is, for the retransmission of the SL dynamic grant, a plurality of SR configurations dedicated to SL retransmission indication are set, and each SR configuration is associated with a different HARQ process ID/Logical Channel Group (LCG). Or, for the retransmission of the configuration grant, multiple HARQ processes are associated to one SR configuration; for dynamically granted SL retransmissions, each HARQ process is associated to one SR configuration.

Optionally, the SR configuration may include a corresponding PUCCH resource configuration.

Optionally, different SR configurations dedicated to SL retransmission indication may be further distinguished for different configuration grants, for example, one SR configuration dedicated to SL retransmission indication is associated for a first type of configuration grant, and one SR configuration dedicated to SL retransmission indication is associated for a second type of configuration grant.

Optionally, different SR configurations dedicated to SL retransmission indication may be further distinguished for different first type configuration grants, for example, one SR configuration dedicated to SL retransmission indication is associated for first type configuration grant 1, and one SR configuration dedicated to SL retransmission indication is associated for first type configuration grant 2.

Optionally, different SR configurations dedicated to SL retransmission indication may be further distinguished for different second type configuration grants, for example, one SR configuration dedicated to SL retransmission indication is associated for second type configuration grant 1, and one SR configuration dedicated to SL retransmission indication is associated for second type configuration grant 2.

Wherein, optionally, the SR configuration may be preconfigured. For example, the SR configuration is protocol specified. Alternatively, the device manufacturer may store the SR configuration in the terminal device or the network device before the terminal device or the network device leaves the factory. Alternatively, the other network device may pre-configure the SR configuration to the terminal device or the network device when the terminal device or the network device has a network.

B. The first information and/or the second information is a Buffer Status Report (BSR);

the BSR may be a first BSR, and/or a second BSR. The first BSR and the second BSR may be sent separately or together, for example, may be sent by being carried in different buffer status report media access control elements (BSR MAC CEs), or may be sent by being carried in the same BSR MAC CE.

1. Scheme one

Optionally, the first BSR may be configured to request a first retransmission resource of the SL for data of transmission failure on the configuration grant resource of the SL;

wherein the first BSR includes at least one of: the number of data which are failed to be transmitted on the configuration authorized resource of the SL, the buffer size of each TB which is failed to be transmitted on the configuration authorized resource of the SL, and the total buffer size of all TB which is failed to be transmitted on the configuration authorized resource of the SL;

optionally, the second BSR may be configured to request a second retransmission resource of the SL for data that fails to be transmitted on the dynamic grant resource of the SL;

wherein the second BSR includes at least one of: the number of the failed transmission TBs on the SL dynamic grant resource, the buffer size of each failed transmission TB on the SL dynamic grant resource, and the total buffer size of all failed transmission TBs on the SL dynamic grant resource.

The configuration authorized resource can be a first type configuration authorized resource and/or a second type configuration authorized resource. Optionally, the first type configuration authorization provides a side link configuration authorization for the network device through radio resource control RRC signaling; the second type configuration authorization defines a period of side link configuration authorization for the network device through a Radio Resource Control (RRC) signaling, and activates the side link configuration authorization through a Physical Downlink Control Channel (PDCCH) or Downlink Control Information (DCI).

Optionally, for different configuration grants, the SL retransmission requests on different configuration grants may be reported in the same first BSR, for example, for a first type configuration grant and a second type configuration grant, the SL retransmission requests on the first type configuration grant and the second type configuration grant may be reported in the same first BSR; SL retransmission requests on different configuration grants may be reported in different first BSRs, for example, for a first type configuration grant and a second type configuration grant, SL retransmission requests on the first type configuration grant and the second type configuration grant may be reported in two first BSRs, respectively.

Optionally, for different first type configuration authorizations to report SL retransmission requests respectively, the SL retransmission requests on different first type configuration authorizations may be reported in the same first BSR respectively, for example, for a first type configuration authorization 1 and a first type configuration authorization 2, the SL retransmission requests on the first type configuration authorization 1 and the first type configuration authorization 2 are reported in the same first BSR respectively; SL retransmission requests on different first type configuration grants may be reported in different first BSRs, for example, for first type configuration grant 1 and first type configuration grant 2, SL retransmission requests on first type configuration grant 1 and first type configuration grant 2 may be reported in two first BSRs, respectively.

Optionally, for different second-type configuration grants to report SL retransmission requests respectively, the SL retransmission requests on different second-type configuration grants may be reported in the same first BSR respectively, for example, for second-type configuration grant 1 and second-type configuration grant 2, the SL retransmission requests on second-type configuration grant 1 and second-type configuration grant 2 are reported in the same first BSR respectively; SL retransmission requests on different second-type configuration grants may be reported in different first BSRs, for example, for second-type configuration grant 1 and second-type configuration grant 2, SL retransmission requests on second-type configuration grant 1 and second-type configuration grant 2 may be reported in two first BSRs, respectively.

Illustratively, the BSR MAC CE may be as shown in FIGS. 4A-4I. The number of bits occupied by each field in the figure is only schematic, that is, the number of bits or bits occupied by each field may be different from that in the figure:

as shown in fig. 4A, the number of TBs that need to be retransmitted is configured and authorized to be reported dynamically; the sequence of configuration authorization and dynamic authorization can be exchanged, the size of the BSR can be fixed, the number of the retransmitted TBs occupies 5 bits, 4 bits or 8 bits in the BSR, which is not specifically limited, and if there are remaining bits, the remaining bits are used as reserved bits, R, and 0 is complemented.

As shown in fig. 4B, the configuration authorization and the dynamic authorization of the number of TBs that need to be retransmitted may be reported in different BSRs, the size of the BSR may be fixed, the bit occupied by the retransmitted TB number in the BSR may be 5 bits, may also be 4 bits, and may also be 8 bits, which is not specifically limited, the BSR may be identified by different Logical Channels (LCIDs), but formats of each BSR are similar, and the configuration authorization and the dynamic authorization of the BSRs may be included in the same media access control layer protocol data unit (MAC PDU), for example, the configuration authorization of the number of TBs that need to be retransmitted is reported.

As shown in fig. 4C, the number of TBs that need to be retransmitted and the buffer size of each TB that needs to be retransmitted are configured and authorized to be reported, and the number of TBs that need to be retransmitted and the buffer size of each TB that needs to be retransmitted are dynamically authorized and reported; wherein, the buffer size of each TB that needs to be retransmitted refers to that, for configuration authorization, if there are 3 TBs that need to be retransmitted, the buffer sizes corresponding to the three TBs are reported respectively; for dynamic authorization, if there are 2 TBs that need to be retransmitted, the buffer sizes corresponding to the 2 TBs are reported respectively. The bit occupied by the TB number in the BSR may be 3 bits or 4 bits, which is not specifically limited. The bit occupied by the respectively retransmitted buffer size in the BSR may be 5 bits or 4 bits, which is not specifically limited. Illustratively, the buffer sizes are arranged in sequence according to the number of TBs that need to be retransmitted by the configuration grant and the dynamic grant, if the configuration grant has 3 TBs that need to be retransmitted, the dynamic grant has 2 TBs that need to be retransmitted, the buffer sizes of the 5 TBs are arranged in sequence, the spare bits are reserved bits, and 0 is complemented. The order of configuration grant and dynamic grant can be switched and the size of the BSR can be varied.

As shown in fig. 4D, the number of TBs to be retransmitted for configuration authorization and dynamic authorization and the buffer size of each TB to be retransmitted may also be reported in different BSRs, and the BSRs may be identified by different LCIDs, but formats of each BSR are similar, where bits occupied by the number of TBs in the BSRs may be 3 bits or 4 bits, which is not specifically limited. The bit occupied by the respectively retransmitted buffer size in the BSR may be 5 bits or 4 bits, which is not specifically limited. The size of the BSR may vary. The BSR of the configuration grant and the dynamic grant may be contained in the same MAC PDU. Such as: if the configuration authorizes that there are 3 TBs that need to be retransmitted, the buffer sizes of the 3 TBs are arranged in sequence, and the spare bit is a reserved bit R and is supplemented with 0.

As shown in fig. 4E, the number of TBs that need to be retransmitted and the total buffer size that need to be retransmitted are configured and authorized to be reported, and the number of TBs that need to be retransmitted and the total buffer size that need to be retransmitted are dynamically authorized to be reported. Wherein, the total buffer size needed to be retransmitted refers to, for configuration authorization, if there are 3 TBs needed to be retransmitted, reporting the total retransmitted buffer size of the three TBs; for dynamic authorization, if there are 2 TBs that need to be retransmitted, the total retransmitted buffer size of the 2 TBs is reported, where the bit occupied by the number of TBs in the BSR may be 3 bits or 4 bits, which is not specifically limited. The bit occupied by the respectively retransmitted buffer size in the BSR may be 5 bits or 4 bits, which is not specifically limited. Illustratively, the configuration grant and the dynamic grant respectively need the number of the retransmitted TBs and two total retransmission buffer sizes, and the spare bit is a reserved bit R and is complemented by 0. The order of configuration grant and dynamic grant can be exchanged, and the size of BSR is fixed. The order of the number of configured and dynamic authorized TBs and the two buffer sizes may be swapped.

As shown in fig. 4F, the total number of TBs that need to be retransmitted and the total buffer size that needs to be retransmitted may also be reported in different BSRs, and identified by different LCIDs, but the format of each BSR is similar, where the total buffer size that needs to be retransmitted indicates that, for the configuration authorization, if there are 3 TBs that need to be retransmitted, the total retransmitted buffer sizes of the three TBs are reported; for dynamic scheduling, if there are 2 TBs to be retransmitted, reporting the total retransmitted buffer size of the 2 TBs, where the bit occupied by the number of TBs in the BSR may be 3 bits or 4 bits, which is not specifically limited. The bit occupied by the respectively retransmitted buffer size in the BSR may be 5 bits or 4 bits, which is not specifically limited. The size of the BSR is fixed. The BSR of the configuration grant and the dynamic grant may be contained in the same MAC PDU. Such as: if the configuration authorizes that there are 3 TBs needing to be retransmitted, the total buffer size needing to be retransmitted of the 3 TBs, and the spare bit is the reserved bit R, and 0 is supplemented.

As shown in fig. 4G, the buffer size of each TB that needs to be retransmitted is configured and authorized to report the TB that needs to be retransmitted; dynamically authorizing and reporting the buffer size of each TB needing to be retransmitted, wherein the TB needs to be retransmitted; wherein, the buffer size of each TB that needs to be retransmitted refers to that, for configuration authorization, if there are 3 TBs that need to be retransmitted, the buffer sizes corresponding to the three TBs are reported respectively; for dynamic authorization, if there are 2 TBs that need to be retransmitted, the buffer sizes corresponding to the 2 TBs are reported respectively.

For example, the configuration grant and the dynamic grant of the TB that needs to be retransmitted may be reported in one BSR at the same time, a bitmap form is used to identify whether each buffer size corresponds to a dynamic grant or a configuration grant, the configuration grant may be 1, the dynamic grant is 0, or the configuration grant may be 0, the dynamic scheduling is 1, the size of the bitmap may be 8 bits or 16 bits or 24 bits or 32 bits, and the size of the bitmap is variable and corresponds to different BSR formats, and different LCID identifiers are used. The size of the BSR may vary. The bit occupied by the respectively retransmitted buffer size in the BSR may be 5 bits, 4 bits, or 8 bits, which is not specifically limited, and if there are remaining bits, the remaining bits are used as the reserved bit R, and 0 is complemented.

As shown in fig. 4H, the buffer sizes of the TBs that need to be retransmitted for configuration authorization and dynamic authorization may be reported in one BSR at the same time, where 1bit precedes each buffer size to identify whether the buffer size corresponds to a dynamic authorization or a configuration authorization, where the configuration authorization may be 1, the dynamic authorization may be 0, or vice versa; the size of the BSR may vary. The bit occupied by the respectively retransmitted buffer size in the BSR may be 5 bits, 4 bits, or 7 bits, which is not specifically limited, and the size of the BSR may be variable. If the residual bit exists, the residual bit is used as a reserved bit R, and 0 is complemented.

As shown in fig. 4I, the buffer sizes of the TBs that need to be retransmitted and the configuration grants and the dynamic grants may be reported in different BSRs, and the BSRs may be identified by different LCIDs, but the formats of each BSR are similar, and the BSRs that need to be configured and dynamically granted may be included in the same MAC PDU, for example, the respective buffer sizes of the TBs that need to be retransmitted and the configuration grants need to be reported, where bits occupied by the respective retransmitted buffer sizes in the BSRs may be 5 bits, also 4 bits, or also 8 bits, which is not specifically limited, and the size of the BSRs may be variable. If the residual bit exists, the residual bit is used as a reserved bit R, and 0 is complemented.

Optionally, in fig. 4A to 4I, the configuration authorization may further distinguish different configuration authorizations for reporting, for example, the first type configuration authorization and the second type configuration authorization are reported separately, or the first type configuration authorization may further distinguish different first type configuration authorizations for reporting, and the second type configuration authorization may also further distinguish different second type configuration authorizations for reporting. The specific situations may include the above different situations, and details are similar and are not described again.

Optionally, the information for the SL retransmission request and the information for the SL new transmission request may be contained in one BSR MAC CE, and the BSR is identified by an LCID; alternatively, the BSR for SL retransmission requests and the BSR for SL new transmission requests may be two BSRs, contained in different BSR MAC CEs, the BSRs being identified by different LCIDs.

Alternatively, the BSR for SL retransmission requests and the BSR for SL new transmission requests may be included in the same MAC PDU. The BSR may be identified by LCID.

2. Scheme two

wherein the first BSR includes at least one of: the number of hybrid automatic repeat request (HARQ) processes with transmission failure on the configuration authorized resource of the SL, the buffer size of each HARQ process with transmission failure on the configuration authorized resource of the SL, and the total buffer size of all the HARQ processes with transmission failure on the configuration authorized resource of the SL.

Wherein the configuration authorized resource can be a first type configuration authorized resource and/or a second type configuration authorized resource. Optionally, the first type configuration authorization provides a side link configuration authorization for the network device through radio resource control RRC signaling; the second type configuration authorization defines a period of side link configuration authorization for the network device through a Radio Resource Control (RRC) signaling, and activates the side link configuration authorization through a Physical Downlink Control Channel (PDCCH) or Downlink Control Information (DCI).

wherein the second BSR includes at least one of: the number of hybrid automatic repeat request (HARQ) processes with failed transmission on the SL dynamic authorized resource, the buffer size of each HARQ process with failed transmission on the SL dynamic authorized resource, and the total buffer size of all HARQ processes with failed transmission on the SL dynamic authorized resource.

For example, the BSR MAC CE may be as shown in fig. 5A to 5I, where the number of bits occupied by each field is only schematic, that is, the number of bits or bits occupied by each field may be different from that in the figure:

as shown in fig. 5A, the HARQ process number that needs to be retransmitted is configured and authorized to report, and the HARQ process number that needs to be retransmitted is dynamically authorized to report; the sequence of the configuration authorization and the dynamic authorization can be exchanged, the size of the BSR can be fixed, the bit occupied by the retransmitted HARQ process number in the BSR can be 5 bits, also can be 4 bits, also can be 8 bits, this is not specifically limited, if there are remaining bits, it is used as the reserved bit R, and 0 is complemented.

As shown in fig. 5B, the HARQ process numbers that need to be retransmitted for configuration authorization and dynamic authorization may be reported in different BSRs, and the BSRs may be identified by different LCIDs, but the formats of each BSR are similar, the size of the BSRs may be fixed, and the bit occupied by the retransmitted HARQ process number in the BSRs may be 5 bits, 4 bits, or 8 bits, which is not specifically limited, and if there are remaining bits, the remaining bits are used as reserved bits R and are complemented by 0. The BSR of the configuration grant and the dynamic grant may be contained in the same MAC PDU. For example, reporting the number of HARQ processes that the configuration grant needs to retransmit.

As shown in fig. 5C, the number of HARQ processes that need to be retransmitted and the buffer size of each HARQ process that needs to be retransmitted are configured and authorized to report the number of HARQ processes that need to be retransmitted and the buffer size of each HARQ process that needs to be retransmitted; optionally, for the configuration grant, if there are 3 HARQ processes that need to be retransmitted, the buffer size of each HARQ process that needs to be retransmitted is reported; for dynamic authorization, if 2 HARQ processes need to be retransmitted, respectively reporting buffer sizes corresponding to the 2 HARQ processes. Optionally, the bit occupied by the HARQ process number in the BSR may be 3 bits or 4 bits, which is not specifically limited. Optionally, the bit occupied by the respectively retransmitted buffer size in the BSR may be 5 bits or 4 bits, which is not specifically limited, and if there are remaining bits, the remaining bits are used as the reserved bit R and are complemented by 0. .

Illustratively, the buffer sizes are arranged in sequence according to the number of HARQ processes that need to be retransmitted by the configuration grant and the dynamic grant, if the configuration grant has 3 HARQ processes that need to be retransmitted, and the dynamic grant has 2 HARQ processes that need to be retransmitted, the buffer sizes of the 5 HARQ processes are arranged in sequence, and the spare bit is a reserved bit and is complemented by 0. The order of configuration grant and dynamic grant can be switched and the size of the BSR can be varied.

As shown in fig. 5D, the number of HARQ processes requiring retransmission and the buffer size of each HARQ process requiring retransmission may also be reported in different BSRs, and the BSRs may be identified by different LCIDs, but the format of each BSR is similar, optionally, the bit occupied by the number of HARQ processes in the BSR may be 3 bits or 4 bits, which is not specifically limited. Optionally, the bit occupied by the respectively retransmitted buffer size in the BSR may be 5 bits or 4 bits, which is not specifically limited, and if there are remaining bits, the remaining bits are used as the reserved bit R and are complemented by 0. The BSR of the configuration grant and the dynamic grant may be contained in the same MAC PDU. Such as: if the configuration authorization has 3 HARQ processes needing retransmission, the buffer sizes of the 3 HARQ processes are arranged in sequence, and if the residual bits exist, the residual bits are used as reserved bits R and 0 is complemented. The size of the BSR may vary.

As shown in fig. 5E, the HARQ process number that needs to be retransmitted and the total buffer size that needs to be retransmitted are configured and authorized to report, and the TB number that needs to be retransmitted and the total buffer size that needs to be retransmitted are dynamically authorized to report; wherein, the total buffer size needed to be retransmitted refers to, for configuration authorization, if there are 3 HARQ processes needing to be retransmitted, reporting the total retransmitted buffer size of the three HARQ processes; for dynamic grant, if there are 2 HARQ processes needing retransmission, reporting the total retransmitted buffer size of the 2 HARQ processes. Optionally, the bit occupied by the HARQ process number in the BSR may be 3 bits or 4 bits, which is not specifically limited. Optionally, the bit occupied by the respectively retransmitted buffer size in the BSR may be 5 bits or 4 bits, which is not specifically limited. If the residual bit exists, the residual bit is used as a reserved bit R, and 0 is complemented. The size of the BSR may be fixed.

Illustratively, the configuration grant and the dynamic grant respectively need the number of HARQ processes to be retransmitted and two total retransmission buffer sizes, and the spare bit is a reserved bit and is complemented by 0. The order of configuration grant and dynamic grant can be exchanged, and the size of BSR is fixed. The order of configuring the number of authorized HARQ processes and the number of dynamically authorized HARQ processes and the two buffer sizes may be exchanged.

As shown in fig. 5F, the configuration authorization and the HARQ process number required to be retransmitted and the total buffer size required to be retransmitted may also be reported in different BSRs, and the BSRs may be identified by different LCIDs, but the format of each BSR is similar, optionally, the bit occupied by the HARQ process number in the BSR may be 3 bits or 4 bits, which is not specifically limited. Optionally, the bit occupied by the respectively retransmitted buffer size in the BSR may be 5 bits or 4 bits, which is not specifically limited. If the residual bit exists, the residual bit is used as a reserved bit R, and 0 is complemented. The size of the BSR may be fixed. The BSR of the configuration grant and the dynamic grant may be contained in the same MAC PDU. Such as: if the configuration authorizes 3 HARQ processes needing to be retransmitted, the 3 HARQ processes have the total buffer size needing to be retransmitted, and the spare bit is the reserved bit and is supplemented with 0. The size of the BSR is fixed.

As shown in fig. 5G, the grant is configured to report the buffer size of each retransmission of the HARQ process that needs to be retransmitted; dynamically authorizing and reporting buffer sizes of respective retransmissions of HARQ processes which need to be retransmitted by the self; wherein, the buffer size of each retransmission refers to that, for configuration authorization, if 3 HARQ processes need to be retransmitted, the buffer sizes corresponding to the three HARQ processes are reported respectively; for dynamic authorization, if 2 HARQ processes need to be retransmitted, respectively reporting buffer sizes corresponding to the 2 HARQ processes.

Optionally, the configuration grant and the dynamic grant of the HARQ process that needs to be retransmitted may be reported in one BSR at the same time, a bitmap form is used to identify whether each HARQ buffer size corresponds to a dynamic grant or a configuration grant, the configuration grant may be 1, the dynamic grant is 0, or the configuration grant may be 0, the dynamic scheduling is 1, the size of the bitmap may be 8 bits or 16 bits or 24 bits or 32 bits, and the size of the bitmap is variable and corresponds to different BSR formats, and different LCID identifiers are used. The size of the BSR may vary. The bit occupied by the respectively retransmitted buffer size in the BSR may be 5 bits, 4 bits, or 8 bits, which is not specifically limited, and if there are remaining bits, the remaining bits are used as the reserved bit R, and 0 is complemented.

As shown in fig. 5H, the buffer sizes of the HARQ processes that need to be retransmitted for configuration authorization and dynamic authorization may be reported in one BSR at the same time, where 1bit precedes each buffer size to identify whether the buffer size corresponds to a dynamic authorization or a configuration authorization, where the configuration authorization may be 1 and the dynamic authorization may be 0, or the configuration authorization may be 0 and the dynamic scheduling may be 1; the size of the BSR may vary. The bit occupied by the respectively retransmitted buffer size in the BSR may be 5 bits, 4 bits, or 8 bits, which is not specifically limited, and if there are remaining bits, the remaining bits are used as the reserved bit R, and 0 is complemented.

As shown in fig. 5I, the buffer sizes of the HARQ processes that need to be retransmitted and are configured and dynamically authorized may be reported in different BSRs, and the BSRs may be identified by different LCIDs, but the formats of each BSR are similar, and the BSRs configured and dynamically authorized may be included in the same MAC PDU, for example, the buffer sizes of the HARQ processes that need to be retransmitted and are configured and authorized need to be reported, where bits occupied by the respective retransmitted buffer sizes in the BSRs may be 5 bits, also 4 bits, or 8 bits, which is not specifically limited, and if there are remaining bits, the remaining bits are used as reserved bits R, and are complemented by 0.

Optionally, in fig. 5A to 5I, the configuration authorization may further distinguish different configuration authorizations for reporting, for example, the first type configuration authorization and the second type configuration authorization are reported separately, or the first type configuration authorization may further distinguish different first type configuration authorizations for reporting, and the second type configuration authorization may also further distinguish different second type configuration authorizations for reporting. The specific situations may include the above different situations, and details are similar and are not described again.

Alternatively, the BSR for SL retransmission requests and the BSR for SL new transmission requests may be included in the same MAC PDU. The BSR is identified by LCID.

C. The first information and/or the second information is indication information of data transmission failure or success of the terminal equipment on the resources of the side link;

optionally, the first information indicates that the terminal device successfully sends the data on the configuration authorized resource; or, the first information indicates that the terminal device fails to send the data on the configuration authorized resource.

Optionally, the first information is used to request a first retransmission resource of the SL for data failed to be transmitted on the configuration grant resource of the SL.

Optionally, the first information is used to request a first retransmission resource of the SL for data that fails to be transmitted on the configuration authorized resource of the SL, and the first information implicitly indicates that the terminal device fails to transmit the data on the configuration authorized resource.

Optionally, the second information indicates that the terminal device successfully sends the data on the dynamic scheduling resource; or, the second information indicates that the terminal device fails to transmit the data on the dynamic scheduling resource.

Optionally, the second information is used to request a second retransmission resource of the SL for data that fails to be transmitted on the dynamic grant resource of the SL.

Optionally, the second information is used to request a second retransmission resource of the SL for data that fails to be transmitted on the dynamic authorized resource of the SL, and the second information implicitly indicates that the terminal device fails to transmit the data on the dynamic authorized resource.

Optionally, indication information resource configurations (e.g., a first indication information resource configuration and a first indication information resource configuration) dedicated to indicate a status (success or failure) of sending data on the SL are set, and correspond to the indication of the configuration authorization and the dynamic authorization, respectively.

Optionally, the first indication information indicates that the terminal device successfully sends the data on the configuration authorized resource; or, the first indication information indicates that the terminal device fails to send the data on the configuration authorized resource; or, the first indication information is used for requesting a first retransmission resource of the SL for data of transmission failure on the configuration authorized resource of the SL; the first indication information corresponds to a first indication information resource configuration. Optionally, the second indication information indicates that the terminal device successfully sends the data on the dynamic scheduling resource; or, the second indication information indicates that the terminal device fails to transmit the data on the dynamic scheduling resource; or, the second indication information is used for requesting a second retransmission resource of the SL for data of transmission failure on the dynamic grant resource of the SL; the second indication information corresponds to a second indication information resource configuration.

Optionally, at least for the indication of the status (success or failure) of sending data on the configuration authorized resource, a success or failure indication message dedicated to indicate the terminal device to send the data on the configuration authorized resource is set, and the indication message corresponds to a resource configuration.

Alternatively, for the indication of the sending data state (success or failure) on the dynamic grant resource, a method of binding a plurality of HARQ process identifications (process IDs) with different indication information resource configurations respectively may be used, that is, for the indication of the sending data state (success or failure) of the SL dynamic grant, a plurality of indication information resource configurations dedicated to indicating the sending data state (success or failure) of the SL dynamic grant are set, each indication information resource configuration being associated with a different HARQ process ID/Logical Channel Group (LCG). Or, for configuring an indication of authorized transmission data status (success or failure), multiple HARQ processes are associated to one indication information resource configuration; for dynamically granted indications of the transmit data status (success or failure), each HARQ process is associated with an indication information resource configuration.

Optionally, the indication information resource configuration may include a corresponding PUCCH resource configuration.

Optionally, different resource configurations of the indication information dedicated to the sending data status (success or failure) indicating the SL configuration authorization may be further distinguished for different configuration authorizations, for example, for a first type of configuration authorization, one resource configuration of the indication information dedicated to the sending data status (success or failure) indicating the SL configuration authorization is associated, and for a second type of configuration authorization, one resource configuration of the indication information dedicated to the sending data status (success or failure) indicating the SL configuration authorization is associated.

Optionally, different indication information resource configurations dedicated to indicating the sending data status (success or failure) of the SL configuration authorization may be further distinguished for different first type configuration authorizations, for example, associating one indication information resource configuration dedicated to indicating the sending data status (success or failure) of the SL configuration authorization for first type configuration authorization 1, and associating one indication information resource configuration dedicated to indicating the sending data status (success or failure) of the SL configuration authorization for first type configuration authorization 2.

Optionally, different indication information resource configurations dedicated to indicating the sending data status (success or failure) of the SL configuration authorization may be further distinguished for different second type configuration authorizations, for example, for second type configuration authorization 1, one indication information resource configuration dedicated to indicating the sending data status (success or failure) of the SL configuration authorization is associated, and for second type configuration authorization 2, one indication information resource configuration dedicated to indicating the sending data status (success or failure) of the SL configuration authorization is associated.

Wherein, optionally, the indication information resource configuration may be preconfigured. For example, the indication information resource configuration is protocol-specified. Or, the device manufacturer may store the indication information resource configuration in the terminal device or the network device before the terminal device or the network device leaves the factory. Or, the other network device may pre-configure the indication information resource to the terminal device or the network device when the terminal device or the network device has a network.

Optionally, the first information and/or the second information may be HARQ indication information indicating that the terminal device fails or succeeds in transmitting data on the resources of the sidelink.

Optionally, HARQ resource configurations (e.g., the first HARQ resource configuration and the first HARQ resource configuration) dedicated to indicate the status (success or failure) of data transmission on the SL are set, and the indication of the configuration grant and the dynamic grant or the indication of the positive acknowledgement and the negative acknowledgement respectively correspond to each other.

Optionally, the first HARQ indicates that the terminal device successfully sends the data on the configured authorized resource; or, the first HARQ indicates that the terminal device fails to send the data on the configured authorized resource; or, the first HARQ is configured to request a first retransmission resource of the SL for data failed in transmission on the configuration grant resource of the SL; the first HARQ indication corresponds to a first HARQ resource configuration.

Optionally, the second HARQ indicates that the terminal device successfully sends the data on the dynamic scheduling resource; or, the second HARQ indicates that the terminal device fails to transmit the data on the dynamic scheduling resource; or, the second HARQ is configured to request a second retransmission resource of the SL for data that fails to be transmitted on the dynamic grant resource of the SL; the second HARQ indication corresponds to a second HARQ resource configuration.

Optionally, at least for the data transmission status (success or failure) indication of the configuration grant, a HARQ indication dedicated to indicate success or failure of the terminal device to transmit the data on the configuration grant resource is set, corresponding to a HARQ resource configuration.

Alternatively, for the indication of the sending data state (success or failure) of the dynamic grant, a method of binding a plurality of HARQ process identifications (process IDs) with different HARQ resource configurations respectively may be used, that is, for the indication of the sending data state (success or failure) of the SL dynamic grant, a plurality of HARQ resource configurations dedicated to indicating the sending data state (success or failure) of the SL dynamic grant are set, and each indication information resource configuration is associated with a different HARQ process ID/Logical Channel Group (LCG). Or, for an indication of the transmitted data state (success or failure) of the configuration grant, multiple HARQ processes are associated to one HARQ resource configuration; for dynamically granted indications of the transmit data status (success or failure), each HARQ process is associated to one HARQ resource configuration.

Optionally, the HARQ resource configuration may include a corresponding PUCCH resource configuration.

Optionally, different HARQ resource configurations dedicated to the transmission data state (success or failure) indicating the SL configuration grant may be further distinguished for different configuration grants, for example, one HARQ resource configuration dedicated to the transmission data state (success or failure) indicating the SL configuration grant is associated for a first type of configuration grant, and one HARQ resource configuration dedicated to the transmission data state (success or failure) indicating the SL configuration grant is associated for a second type of configuration grant.

Optionally, different HARQ resource configurations dedicated to the transmission data state (success or failure) indicating the SL configuration grant may be further distinguished for different first type configuration grants, for example, for the first type configuration grant 1, one HARQ resource configuration dedicated to the transmission data state (success or failure) indicating the SL configuration grant is associated, and for the first type configuration grant 2, one HARQ resource configuration dedicated to the transmission data state (success or failure) indicating the SL configuration grant is associated.

Optionally, different HARQ resource configurations dedicated to the transmission data state (success or failure) indicating the SL configuration grant may be further distinguished for different second type configuration grants, for example, for second type configuration grant 1, one HARQ resource configuration dedicated to the transmission data state (success or failure) indicating the SL configuration grant is associated, and for second type configuration grant 2, one HARQ resource configuration dedicated to the transmission data state (success or failure) indicating the SL configuration grant is associated.

Wherein, optionally, the HARQ resource configuration may be preconfigured. For example, the HARQ resource configuration is protocol specified. Or, the device manufacturer may store the HARQ resource configuration in the terminal device or the network device before the terminal device or the network device leaves the factory. Alternatively, the other network device may pre-configure the HARQ resource configuration to the terminal device or the network device when the terminal device or the network device has a network.

Alternatively, HARQ resource configurations (e.g., the first HARQ resource configuration and the first HARQ resource configuration) dedicated to indicating the transmission data status (success or failure) of the SL configuration grant may be set, corresponding to the indications of the configuration grant and the dynamic grant, respectively.

Optionally, the HARQ resource configuration may include a Negative Acknowledgement (NACK) configuration. Or, a positive Acknowledgement (ACK) resource configuration, or a Negative Acknowledgement (NACK) and positive Acknowledgement (ACK) resource configuration.

Optionally, the first HARQ resource configuration may include Negative Acknowledgement (NACK), an indication indicating that the terminal device failed to send the data on the configuration authorized resource, or a first retransmission resource for requesting the SL for data that fails to be transmitted on the configuration authorized resource of the SL, or, a positive acknowledgement (ACK, positive acknowledgement, indicating that the terminal device successfully sends the data on the configuration authorized resource) resource configuration, or, a negative acknowledgement (NACK, indicating that the terminal device fails to send the data on the configuration authorized resource, or, requesting a first retransmission resource of the SL for data that fails to be transmitted on the configuration authorized resource of the SL) and a positive acknowledgement (ACK, indicating that the terminal device successfully sends the data on the configuration authorized resource) resource configuration.

Optionally, the second HARQ resource configuration may include Negative Acknowledgement (NACK), an indication indicating that the terminal device failed to send the data on the dynamic grant resource, or a second retransmission resource for requesting the SL for data that failed to be transmitted on the dynamic grant resource of the SL, or, a positive acknowledgement (ACK, indicating that the terminal device successfully sends the data on the dynamic grant resource) resource configuration, or, a negative acknowledgement (NACK, indicating that the terminal device fails to send the data on the configuration grant resource, or, requesting a second retransmission resource of the SL for the data that fails to be transmitted on the dynamic grant resource of the SL) and a positive acknowledgement (ACK, indicating that the terminal device successfully sends the data on the dynamic grant resource) resource configuration.

Optionally, each HARQ indication occupies 1 bit. Optionally, a bit of the HARQ indication of 0 indicates a negative acknowledgement NACK; alternatively, a bit 1 of the HARQ indication indicates a negative acknowledgement NACK. Optionally, a bit of the HARQ indication of 0 indicates a positive acknowledgement ACK; alternatively, a bit of 1 for the HARQ indication indicates a positive acknowledgement ACK.

Optionally, the HARQ resource configuration may include a corresponding Physical Uplink Control Channel (PUCCH) resource configuration. The indication of the configuration grant and the dynamic scheduling may correspond, respectively.

Optionally, different HARQ resource configurations dedicated to the transmission data state (success or failure) indicating the SL configuration grant may be further set for different configuration grants, for example, one HARQ resource configuration dedicated to the transmission data state (success or failure) indicating the SL configuration grant is set for a first type configuration grant, and one HARQ resource configuration dedicated to the transmission data state (success or failure) indicating the SL configuration grant is set for a second type configuration grant.

Optionally, different HARQ resource configurations dedicated to the transmission data state (success or failure) indicating the SL configuration grant may be further set for different first type configuration grants, for example, one HARQ resource configuration dedicated to the transmission data state (success or failure) indicating the SL configuration grant is set for the first type configuration grant 1, and one HARQ resource configuration dedicated to the transmission data state (success or failure) indicating the SL configuration grant is set for the first type configuration grant 2.

Optionally, different HARQ resource configurations dedicated to the transmission data state (success or failure) indicating the SL configuration grant may be further set for different second type configuration grants, for example, one HARQ resource configuration dedicated to the transmission data state (success or failure) indicating the SL configuration grant is set for second type configuration grant 1, and one HARQ resource configuration dedicated to the transmission data state (success or failure) indicating the SL configuration grant is set for second type configuration grant 2.

Optionally, NACK information is sent on HARQ resource resources associated with the configuration of the configuration-granted HARQ resource, and the NACK information indicates that the terminal device fails to send the data on the configuration-granted resource of the SL, or may also be used to request the first retransmission resource of the SL for data that is failed to be transmitted on the configuration-granted resource of the SL. .

Optionally, NACK information is sent on the HARQ resource associated with the dynamically granted HARQ resource configuration, and the NACK information indicates that the terminal device fails to send the data on the SL dynamic granted resource, or may also be used to request the second retransmission resource of the SL for the data that is failed to be transmitted on the SL dynamic granted resource.

Optionally, the ACK information is sent on the HARQ resource associated with the HARQ resource configuration configured for authorization, and the terminal device is instructed to successfully send the data on the configuration authorized resource of the SL, or the network device may release the retransmission resource previously scheduled to the terminal device or schedule the retransmission resource to another terminal device according to the ACK information reported by the terminal device. Wherein, the retransmission resource is an unused retransmission resource of repeat retransmission allocated to the terminal device by the base station.

Optionally, ACK information is sent on the HARQ resource associated with the dynamically granted HARQ resource configuration, and the terminal device is instructed to successfully send the data on the SL dynamically granted resource, or the network device may release or schedule the retransmission resource previously scheduled to the terminal device to another terminal device according to the ACK information reported by the terminal device. Wherein, the retransmission resource is an unused retransmission resource of repeat retransmission allocated to the terminal device by the base station.

Optionally, the HARQ resource configuration may be preconfigured. For example, the HARQ resource configuration described above is protocol-specified. Or, the device manufacturer may store the HARQ resource configuration in the terminal device or the network device before the terminal device or the network device leaves the factory. Or, the other network device may pre-configure the HARQ resource configuration to the terminal device or the network device when the terminal device or the network device has a network.

Operation 203: and the network equipment allocates retransmission resources for the terminal equipment.

Optionally, the network device allocates retransmission resources according to the configuration authorization and the information of the SL transmission condition of the dynamic authorization reported by the UE.

For example, the network device may allocate a corresponding number of SL retransmission resources (SL grants) for the configuration grant and the dynamic grant, respectively, and the size of each grant may be determined by the network device itself.

For example, the network device may allocate a corresponding number of SL retransmission resources (SL grants) for the configuration grant and the dynamic grant, respectively, and the size of each grant may be equal to the buffer size of each reported TB.

Optionally, the network device may allocate a corresponding number of SL retransmission resources (SL grants) for the configuration grant and the dynamic grant, where the size of each grant may be equal to the buffer size of each reported HARQ process.

Optionally, the network device may allocate corresponding number of SL retransmission resources (SL grants) for the configuration authorization and the dynamic authorization, and allocate grants of different sizes according to the total buffer size of the TB to be retransmitted and the number of TBs to be retransmitted, which are reported by the configuration authorization and the dynamic authorization respectively;

optionally, the network device may allocate corresponding number of SL retransmission resources (SL grants) for the configuration grant and the dynamic grant, and allocate grants of different sizes according to the total buffer size of the HARQ processes to be retransmitted and the number of HARQ processes to be retransmitted, which are respectively reported by the configuration grant and the dynamic grant.

Optionally, service requirements corresponding to the configuration grant and the dynamic grant may be different, and delays of scheduling the retransmission resource of the dynamic grant and the configuration grant by the network device may be different.

Optionally, when the terminal device reports the first information, different configuration grants are further divided, where the different configuration grants correspond to different services, and the network device allocates different retransmission resources, for example, allocates retransmission resources of different sizes, according to sizes or service features of the different configuration grants; or, the configuration authorization corresponding to the service with higher delay requirement is allocated, and when the retransmission SL resource is allocated, the network device is allocated more quickly.

Optionally, for the retransmission resources of the configuration grant and the dynamic grant, the network device scrambles a Physical Downlink Control Channel (PDCCH) using different Radio Network Temporary Identifiers (RNTIs) (e.g., SL-CS-V-RNTI and SL-C-V-RNTI), the terminal device can determine whether the retransmission resources correspond to the configuration grant or the initial transmission of the dynamic grant, and the terminal device transmits the configuration grant and the retransmission of the dynamic grant respectively using the retransmission resources of the corresponding configuration grant and the dynamic grant.

For transmission failure on the resource allocated and authorized by the side link, when the base station allocates retransmission resources, the base station may scramble the PDCCH using the SL-CS-V-RNTI, which may be the SL-Configured Scheduling-V-RNTI, and may not be the name, and may also be called the CS-V-RNTI, or the SL-CS-RNTI, or the V-CS-RNTI, or the CS-SL-RNTI, and the like.

For the transmission failure on the dynamic grant resource of the edge link, when the base station allocates the retransmission resource, the base station may scramble the PDCCH using the SL-C-V-RNTI, which may be the SL-Cell-V-RNTI, and may not be the name, and may also be called the SL-V-RNTI, or the SL-RNTI, or the V-RNTI, or the C-SL-RNTI, and the like.

Optionally, the size of the transport block corresponding to the first retransmission resource is not smaller than the first threshold.

Optionally, the size of the transport block corresponding to the second retransmission resource is not smaller than the first threshold.

Optionally, the number of the first retransmission resources may be equal to the number of transport blocks TBs or the number of HARQ processes failing transmission on the configuration grant resource of the SL.

Optionally, the number of the second retransmission resources may be equal to the number of transport blocks TB or HARQ processes with failed transmission on the SL dynamic grant resource.

Optionally, this operation is an optional operation.

Operation 204: the terminal equipment acquires retransmission resources allocated by the network equipment.

The terminal device may obtain the retransmission resource allocated by the network device in different manners. For example, mode1 resource allocation pattern or mode3 resource allocation pattern specified in the current 3rd Generation Partnership Project (3 GPP) established standards.

For example, the network device may schedule the SL retransmission resource through Downlink Control Information (DCI) or PDCCH.

For example, the network device may schedule retransmission resources through a PDCCH scrambled by a different RNTI (e.g., SL-CS-V-RNTI or SL-C-V-RNTI).

Illustratively, the terminal device can obtain different retransmission resources allocated by the network device by receiving a PDCCH scrambled by a different RNTI (e.g., SL-CS-V-RNTI or SL-C-V-RNTI).

Optionally, the terminal device may identify the network-allocated retransmission resources of the configuration grant and the dynamic grant by receiving a PDCCH scrambled by a different RNTI (e.g., SL-CS-V-RNTI, or SL-C-V-RNTI).

Optionally, this operation is an optional operation, for example, if the network device does not allocate retransmission resources for the terminal device, the terminal device cannot acquire the retransmission resources allocated by the network device.

Operation 205: the terminal device retransmits the data on SL.

And the terminal equipment retransmits the SL data which is transmitted in failure before by using the SL retransmission resources scheduled by the network equipment.

Illustratively, the terminal device retransmits the data failed to be transmitted on the configuration authorized resource of the first link before using the first retransmission resource of the first link which is scheduled by the network device for the data failed to be transmitted on the configuration authorized resource of the first link.

Illustratively, the terminal device retransmits the data failed to be transmitted on the dynamic authorized resource of the first link before using the second retransmission resource of the first link scheduled by the network device for the data failed to be transmitted on the dynamic authorized resource of the first link.

Optionally, this operation is an optional operation, for example, if the terminal device does not acquire the retransmission resource allocated by the network device, the terminal device cannot retransmit the data on the SL.

Fig. 3 is a schematic flowchart of a communication method provided in the present application, and the following describes a technical solution of an embodiment of the present application in detail with reference to fig. 3. For example, taking the first link as SL as an example, the communication method 300 corresponding to fig. 3 may include:

operation 301: the terminal device transmits data on SL.

For example, the terminal device may transmit data using the initial transmission resource on the SL.

Optionally, the size of the transmission block corresponding to the initial transmission resource is not greater than a first threshold;

optionally, the size of the TB with the transmission failure on the resource of the first link or the size of the TB corresponding to the HARQ process with the transmission failure on the resource of the first link is not greater than a first threshold;

Operation 302: and the terminal equipment sends a Buffer Status Report (BSR) to the network equipment.

The BSR is configured to request retransmission resources of the SL for data that failed to be transmitted on the transmission resources of the SL;

the BSR includes at least one of: the number of the HARQ processes with transmission failure, the buffer size of each HARQ process with transmission failure, and the total buffer size of all the HARQ processes with transmission failure.

Illustratively, the BSR MAC CE may be as shown in fig. 6A-6D. The number of bits occupied by each field in the figure is only illustrative, that is, the number of bits or bits occupied by each field may be different from that in the figure.

As shown in fig. 6A, the number of HARQ processes to be retransmitted is reported in the BSR, and the bit occupied by the number of HARQ processes in the BSR may be 3 bits or 4 bits, which is not specifically limited. The spare bit is reserved bit R, and 0 is supplemented. The size of the BSR is fixed.

As shown in fig. 6B, the number of HARQ processes requiring retransmission and the total retransmission HARQ buffer size are reported in the BSR. The bit occupied by the HARQ process number in the BSR may be 3 bits or 4 bits, which is not specifically limited. The bit occupied by the total retransmission HARQ buffer size in the BSR may be 3 bits or 4 bits, which is not specifically limited. The spare bit is reserved bit R, and 0 is supplemented. The size of the BSR is fixed.

As shown in fig. 6C, each retransmission HARQ buffer size is reported in the BSR. The bit occupied by the retransmission buffer size of each HARQ process that needs to be retransmitted in the BSR may be 5 bits, 4 bits, or 8 bits, which is not specifically limited, and if there are remaining bits, the remaining bits are used as reserved bits R, and 0 is complemented. The size of the BSR may vary.

As shown in fig. 6D, the number of HARQ processes requiring retransmission and each retransmission HARQ buffer size are reported in the BSR, and the size of the BSR may vary. The bit occupied by the retransmitted HARQ process number in the BSR may be 5 bits, 4 bits, or 8 bits, which is not specifically limited. The bit occupied by the HARQ buffer size of each retransmission in the BSR may be 5 bits, 4 bits, or 8 bits, which is not specifically limited, and if there are remaining bits, the remaining bits are used as the reserved bit R, and 0 is complemented. The size of the BSR may vary.

Alternatively, the BSR for SL retransmission requests and the BSR for SL new transmission requests may be included in the same MAC PDU.

Operation 303: and the network equipment allocates retransmission resources for the terminal equipment.

Optionally, the network device allocates retransmission resources according to the information of the SL transmission condition reported by the UE. For example, the network device may allocate a corresponding number of SL retransmission resources (SL grants), but the size of each SL grant needs the network device to decide itself.

Optionally, the network device may allocate a corresponding number of SL retransmission resources (SL grants), and the size of each grant may be equal to the reported buffer size of each HARQ process.

Optionally, the network device may allocate corresponding number of SL retransmission resources (SL grants), and allocate grants of different sizes according to the reported total buffer size of HARQ processes that need to be retransmitted and the number of HARQ processes that need to be retransmitted.

Optionally, the number of the retransmission resources may be equal to the number of HARQ processes failing transmission on the transmission resources of the SL. Wherein, the number of retransmission resources may refer to the number of different retransmission resources allocated.

Optionally, this operation is an optional operation, that is, after receiving the BSR, the network device may not allocate retransmission resources to the terminal device.

Operation 304: the terminal equipment acquires retransmission resources allocated by the network equipment.

Optionally, the network device may schedule the SL retransmission resource through Downlink Control Information (DCI).

Operation 305: the terminal device retransmits the data on SL.

The following embodiment is a technical solution of an embodiment of the present application, and exemplarily, taking a first link as an SL, a communication method 400 corresponding to the embodiment may include:

operation 401: and the network equipment allocates initial transmission resources of the SL to the terminal equipment.

Wherein the size of the transmission block corresponding to the transmission resource is not greater than a first threshold;

Operation 402: the network device receives the request information from the terminal device.

The request information is used for requesting the network device to allocate retransmission resources for the terminal device.

Optionally, the request message may be a scheduling request SR, or a buffer status report BSR, or HARQ indication information (e.g. indication NACK), where the request information is used to indicate that the terminal device fails to send data on transmission resources of the SL; or, the request information is used to request the network device for SL retransmission resources.

Optionally, before this operation, the method may further include the network device sending configuration information to the terminal device. The configuration information is used for configuring the transmission resource of the request information. Optionally, the configuration information may be SR configuration, HARQ resource configuration, or other configurations. Optionally, the SR configuration may include a corresponding PUCCH resource configuration. Optionally, the HARQ resource configuration may include a corresponding PUCCH resource configuration. Optionally, the SR configuration may be configuration information of a common SR (for example, the same SR configuration as that requesting the SL to newly transmit the resource) or configuration information of an SR requesting the SL to retransmit the resource.

Optionally, if the terminal device itself stores the resource configuration information, the network device does not need to send the resource configuration information to the terminal device.

Alternatively, this operation is an optional operation, for example, if the terminal device does not need a request, the network device allocates retransmission resources to the terminal device, and the network device does not need to receive the request information from the terminal device.

In operation 403: and the network equipment allocates retransmission resources for the terminal equipment.

And the size of the transmission block corresponding to the retransmission resource is not less than the first threshold value. Therefore, even if the terminal equipment does not report the size of the retransmission resource required currently, the retransmission resource allocated to the terminal equipment by the network equipment can still meet the current retransmission requirement of the terminal equipment.

The following embodiment is a technical solution of an embodiment of the present application, and exemplarily, taking a first link as an SL, a communication method 500 corresponding to the embodiment may include:

operation 501: the terminal device transmits data on SL.

Operation 502: the terminal device sends information to the network device.

Optionally, the first information and/or the second information is indication information indicating that the terminal device fails or succeeds in transmitting data on the resource of the side link;

Optionally, the first information indicates that the terminal device fails to send the data on the configuration authorized resource, and the first information implicitly indicates that the first retransmission resource of the SL is requested for the data that fails to be transmitted on the configuration authorized resource of the SL.

Optionally, the second information indicates that the terminal device fails to send the data on the dynamic authorized resource, and the second information implicitly is used to request the second retransmission resource of the SL for the data that is failed to be transmitted on the dynamic authorized resource of the SL.

Optionally, the first indication information indicates that the terminal device successfully sends the data on the configuration authorized resource; or, the first indication information indicates that the terminal device fails to send the data on the configuration authorized resource; or, the first indication information is used for requesting a first retransmission resource of the SL for data of transmission failure on the configuration authorized resource of the SL; corresponding to a first indication information resource configuration.

Optionally, the second indication information indicates that the terminal device successfully sends the data on the dynamic scheduling resource; or, the second indication information indicates that the terminal device fails to transmit the data on the dynamic scheduling resource; or, the second indication information is used for requesting a second retransmission resource of the SL for data of transmission failure on the dynamic grant resource of the SL; corresponding to a second indication information resource configuration.

Optionally, at least for the indication of the status (success or failure) of sending data on the configuration authorized resource, a success or failure indication message dedicated to indicate the terminal device to send the data on the configuration authorized resource is set, and the indication message resource configuration corresponds to one indication message resource configuration.

Optionally, for the indication of the data transmission status (success or failure) on the dynamic grant resource, a method of binding a plurality of HARQ process identifiers (process IDs) with different indication information resource configurations respectively may be used, that is, for the indication of the data transmission status (success or failure) of the SL dynamic grant, a plurality of indication information resource configurations dedicated to indicating the data transmission status (success or failure) of the SL dynamic grant are set, and each indication information resource configuration is associated with a different HARQ process ID/Logical Channel Group (LCG). Or, for configuring an indication of authorized transmission data status (success or failure), multiple HARQ processes are associated to one indication information resource configuration; for dynamically granted indications of the transmit data status (success or failure), each HARQ process is associated with an indication information resource configuration.

Optionally, the first HARQ indicates that the terminal device successfully sends the data on the configured authorized resource; or, the first HARQ indicates that the terminal device fails to send the data on the configured authorized resource; or, the first HARQ is configured to request a first retransmission resource of the SL for data failed in transmission on the configuration grant resource of the SL; corresponding to a first HARQ resource configuration.

Optionally, the second HARQ indicates that the terminal device successfully sends the data on the dynamic scheduling resource; or, the second HARQ indicates that the terminal device fails to transmit the data on the dynamic scheduling resource; or, the second HARQ is configured to request a second retransmission resource of the SL for data that fails to be transmitted on the dynamic grant resource of the SL; corresponding to a second HARQ resource configuration.

Illustratively, the first HARQ indicates that the terminal device successfully transmits the data on the configuration grant resource or the dynamic scheduling resource; corresponding to a first HARQ resource configuration.

Illustratively, the second HARQ indicates that the terminal device failed to transmit the data on the configuration granted resource or the dynamic scheduling resource; corresponding to a second HARQ resource configuration.

Alternatively, for the indication of the sending data state (success or failure) of the dynamic grant, a method of binding a plurality of HARQ process identifications (process IDs) with different HARQ resource configurations respectively may be used, that is, for the indication of the sending data state (success or failure) of the SL dynamic grant, a plurality of HARQ resource configurations dedicated to indicating the sending data state (success or failure) of the SL dynamic grant are set, and each indication information resource configuration is associated with a different HARQ process ID or Logical Channel Group (LCG). Or, for an indication of the transmitted data state (success or failure) of the configuration grant, multiple HARQ processes are associated to one HARQ resource configuration; for dynamically granted indications of the transmit data status (success or failure), each HARQ process is associated to one HARQ resource configuration.

Optionally, the HARQ resource configuration may include Negative Acknowledgement (NACK), which indicates that the terminal device fails to send the data on the configured authorized resource, or is configured to request a first retransmission resource of the SL for data that fails to be transmitted on the configured authorized resource of the SL, or positive acknowledgement (ACK, which indicates that the terminal device succeeds in sending the data on the dynamically authorized resource), or Negative Acknowledgement (NACK), which indicates that the terminal device fails to send the data on the configured authorized resource, or negative acknowledgement (ACK, which indicates that the terminal device fails to send the data on the configured authorized resource, or positive acknowledgement (ACK, which indicates that the terminal device succeeds in sending the data on the dynamically authorized resource).

Illustratively, the first HARQ resource configuration may include a Negative Acknowledgement (NACK) resource configuration indicating that the terminal device failed to transmit the data on the configured granted resource, or requesting a first retransmission resource of the SL for data failed to transmit on the configured granted resource of the SL, or a positive Acknowledgement (ACK) resource configuration indicating that the terminal device succeeded in transmitting the data on the dynamic granted resource, or a Negative Acknowledgement (NACK) resource configuration indicating that the terminal device failed to transmit the data on the configured granted resource, or requesting a first retransmission resource of the SL for data failed to transmit on the configured granted resource and a positive acknowledgement (positive retransmission resource) indicating that the terminal device succeeded in transmitting the data on the configured granted resource, ACK, indicating that the terminal device successfully sends the data on the dynamic authorized resource) resource configuration.

Illustratively, the second HARQ resource configuration may include a Negative Acknowledgement (NACK) resource configuration indicating that the terminal device failed to send the data on the dynamic grant resource, or a second retransmission resource for requesting the SL for data that failed to send on the dynamic grant resource, or a positive Acknowledgement (ACK) resource configuration indicating that the terminal device succeeded in sending the data on the dynamic grant resource, or a Negative Acknowledgement (NACK) resource indicating that the terminal device failed in sending the data on the dynamic grant resource, or a Negative Acknowledgement (NACK) resource configuration indicating that the terminal device failed in sending the data on the dynamic grant resource, or, request the second retransmission resource of the SL for the data failed to be transmitted on the dynamic grant resource of the SL) and indicate that the terminal device successfully transmits the data on the dynamic grant resource.

For example, each HARQ indication occupies 1 bit. Optionally, a bit of the HARQ indication of 0 indicates a negative acknowledgement NACK; alternatively, a bit 1 of the HARQ indication indicates a negative acknowledgement NACK. Optionally, a bit of the HARQ indication of 0 indicates a positive acknowledgement ACK; alternatively, a bit of 1 for the HARQ indication indicates a positive acknowledgement ACK.

Optionally, a bit of the HARQ indication is 0 to indicate negative acknowledgement NACK of configuration grant, and a bit of the HARQ indication is 1 to indicate negative acknowledgement NACK of dynamic grant; or, a bit of 1 in the HARQ indication indicates NACK for configuration grant, and a bit of 0 in the HARQ indication indicates NACK for dynamic grant.

Optionally, a bit of the HARQ indication is 0 to indicate that the ACK is configured with the grant, and a bit of the HARQ indication is 1 to indicate that the ACK is dynamically granted; or, the bit of the HARQ indication of 1 indicates the ACK of the configuration grant, and the bit of the HARQ indication of 0 indicates the ACK of the dynamic grant.

Optionally, the HARQ resource configuration may include a corresponding Physical Uplink Control Channel (PUCCH) resource configuration.

Optionally, NACK information is sent on HARQ resources associated with the HARQ resource configuration configured with the grant, and the terminal device is instructed to fail to send the data on the configuration grant resources of the SL, or the terminal device may also be configured to request the first retransmission resources of the first link for the data failed in transmission on the configuration grant resources of the first link.

Optionally, NACK information is sent on the HARQ resource associated with the dynamically granted HARQ resource configuration, and the NACK information indicates that the terminal device failed to send the data on the SL dynamic granted resource, or may also be used to request the second retransmission resource of the first link for the data that failed in transmission on the dynamic granted resource of the first link.

Optionally, the ACK information is sent on the HARQ resource associated with the HARQ resource configuration configured for authorization, and the terminal device is instructed to successfully send the data on the configuration authorized resource of the SL, or the network device may release the retransmission resource previously scheduled to the terminal device or schedule the retransmission resource to another terminal device according to the ACK information reported by the terminal device. Wherein, the retransmission resource is an unused retransmission resource allocated to the terminal device by the base station.

Optionally, ACK information is sent on the HARQ resource associated with the dynamically granted HARQ resource configuration, and the terminal device is instructed to successfully send the data on the SL dynamically granted resource, or the network device may release or schedule the retransmission resource previously scheduled to the terminal device to another terminal device according to the ACK information reported by the terminal device. Wherein, the retransmission resource is an unused retransmission resource allocated to the terminal device by the base station.

Optionally, NACK information of configuration grant is sent on HARQ resources associated with HARQ resource configuration, and the NACK information indicates that the terminal device fails to send the data on the configuration grant resources of the SL, or may also be used to request first retransmission resources of the first link for data that fails to be transmitted on the configuration grant resources of the first link.

Optionally, the NACK information of the dynamic grant is sent on the HARQ resource associated with the HARQ resource configuration, and the terminal device is instructed that the data transmission on the SL dynamic grant resource fails, or the terminal device may also be configured to request the second retransmission resource of the first link for the data that is failed to be transmitted on the dynamic grant resource of the first link.

Optionally, ACK information of configuration authorization is sent on the HARQ resource associated with the HARQ resource configuration, and the terminal device is instructed to successfully send the data on the configuration authorization resource of the SL, or the network device may release or schedule retransmission resources previously scheduled to the terminal device to another terminal device according to the ACK information reported by the terminal device. Wherein, the retransmission resource is an unused retransmission resource allocated to the terminal device by the base station.

Optionally, the ACK information of the dynamic grant is sent on the HARQ resource associated with the HARQ resource configuration, and the terminal device is instructed to successfully send the data on the dynamic grant resource of the SL, or the network device may release the retransmission resource previously scheduled to the terminal device or schedule the retransmission resource to another terminal device according to the ACK information reported by the terminal device. Wherein, the retransmission resource is an unused retransmission resource allocated to the terminal device by the base station.

(1) There may be 2 HARQ resource configurations dedicated to indicate the status (success or failure) of data sent on SL, corresponding to the indication of the configuration grant and the dynamic grant, respectively. Each HARQ resource configuration may include resource configurations of positive Acknowledgement (ACK) and Negative Acknowledgement (NACK). Optionally, each HARQ indication information occupies 1 bit. Optionally, a bit of 0 in the HARQ indication information indicates negative acknowledgement NACK, and a bit of 1 in the HARQ indication information indicates positive acknowledgement ACK; alternatively, a bit 1 of the HARQ indication information indicates a negative acknowledgement NACK, and a bit 0 of the HARQ indication information indicates a positive acknowledgement ACK.

Optionally, NACK information is sent on HARQ resources associated with the HARQ resource configuration configured with the grant, and the terminal device is instructed to fail to send the data on the configuration grant resources of the SL, or the terminal device may also be configured to request the first retransmission resources of the first link for the data failed in transmission on the configuration grant resources of the first link. Or, the ACK information is sent on the HARQ resource associated with the HARQ resource configuration configured for authorization, and the terminal device is instructed to successfully send the data on the configuration authorized resource of the SL, or the network device may release or schedule the retransmission resource previously scheduled to the terminal device to another terminal device according to the ACK information reported by the terminal device. Wherein, the retransmission resource is an unused retransmission resource allocated to the terminal device by the base station.

Optionally, NACK information is sent on HARQ resources associated with dynamically granted HARQ resource configuration, and indicates that the terminal device fails to send the data on the SL dynamically granted resources, or may also be used to request the first retransmission resources of the first link for data that fails to be transmitted on the configured granted resources of the first link. Or, the ACK information is sent on the HARQ resource associated with the dynamically granted HARQ resource configuration, and the terminal device is instructed to successfully send the data on the SL dynamically granted resource, or the network device may release or schedule the retransmission resource previously scheduled to the terminal device to another terminal device according to the ACK information reported by the terminal device. The retransmission resource is an unused retransmission resource allocated to the terminal device by the base station.

(2) There may be 2 HARQ resource configurations dedicated to indicate the status (failure) of sending data on SL, corresponding to the indication of configuration grant and dynamic grant, respectively. Each HARQ resource configuration may include a resource configuration of Negative Acknowledgement (NACK). Optionally, each HARQ indication information occupies 1 bit. Optionally, a bit of the HARQ indication information being 0 indicates a negative acknowledgement NACK; alternatively, a bit 1 of the HARQ indication information indicates a negative acknowledgement NACK.

(3) Optionally, 1 HARQ resource configuration dedicated for indicating data status (failure) sent on SL may be set, and the HARQ resource configuration may include Negative Acknowledgement (NACK) resource configuration. Optionally, the HARQ indication information occupies 1 bit. Optionally, a bit of the HARQ indication information is 0 to indicate negative acknowledgement NACK corresponding to configuration grant, and a bit of the HARQ indication information is 1 to indicate negative acknowledgement NACK corresponding to dynamic grant; or, the bit 1 of the HARQ indication information indicates NACK corresponding to the configuration grant, and the bit 0 of the HARQ indication information indicates NACK corresponding to the dynamic grant;

(4) There may be 2 HARQ resource configurations dedicated to indicate the status (success) of sending data on SL, corresponding to the indication of configuration grant and dynamic grant, respectively. Each HARQ resource configuration may comprise a resource configuration for a positive acknowledgement, ACK. Optionally, each HARQ indication information occupies 1 bit. Optionally, a bit of the HARQ indication information being 0 indicates a positive acknowledgement ACK; alternatively, a bit 1 of the HARQ indication information indicates a positive acknowledgement ACK.

(5) Optionally, 1 HARQ resource configuration dedicated for indicating the status of data transmission (success) on SL may be set, and the HARQ resource configuration may include a positive acknowledgement ACK resource configuration. Optionally, the HARQ indication information occupies 1 bit. Optionally, a bit of the HARQ indication information is 0 to indicate that positive acknowledgement ACK corresponding to the configuration grant is received, and a bit of the HARQ indication information is 1 to indicate that positive acknowledgement ACK corresponding to the dynamic grant is received; or, a bit 1 of the HARQ indication information indicates a positive acknowledgement ACK corresponding to the configuration grant, and a bit 0 of the HARQ indication information indicates a positive acknowledgement ACK corresponding to the dynamic grant.

Optionally, the HARQ resource configuration may include a corresponding Physical Uplink Control Channel (PUCCH) resource configuration, and respectively correspond to the configuration grant and the indication of dynamic scheduling.

(6) Alternatively, 2 HARQ resource configurations dedicated to indicate the status (failure or success) of data transmission on the SL may be set, and the HARQ resource configurations may include resource configurations of Negative Acknowledgement (NACK) and positive Acknowledgement (ACK).

Illustratively, the HARQ indication information occupies 1 bit. Optionally, a bit of the HARQ indication information is 0 to indicate negative acknowledgement NACK corresponding to configuration grant, and a bit of the HARQ indication information is 1 to indicate negative acknowledgement NACK corresponding to dynamic grant; or, the bit 1 of the HARQ indication information indicates NACK corresponding to the configuration grant, and the bit 0 of the HARQ indication information indicates NACK corresponding to the dynamic grant;

optionally, a bit of the HARQ indication information is 0 to indicate that negative acknowledgement ACK corresponding to the configuration grant is received, and a bit of the HARQ indication information is 1 to indicate that negative acknowledgement ACK corresponding to the dynamic grant is received; or, a bit of the HARQ indication information of 1 indicates that the negative acknowledgement ACK corresponding to the configuration grant is received, and a bit of the HARQ indication information of 0 indicates that the negative acknowledgement ACK corresponding to the dynamic grant is received;

Optionally, NACK information of configuration grant is sent on HARQ resources associated with HARQ resource configuration, and the NACK information indicates that the terminal device fails to send the data on the configuration grant resources of the SL, or may also be used to request first retransmission resources of the first link for data that fails to be transmitted on the configuration grant resources of the first link. Or, the NACK information of the dynamic grant is sent on the HARQ resource associated with the HARQ resource configuration, and the terminal device is instructed to fail to send the data on the SL dynamic grant resource, or the NACK information may also be used to request the first retransmission resource of the first link for the data that fails to be transmitted on the configuration grant resource of the first link.

Optionally, ACK information of configuration authorization is sent on the HARQ resource associated with the HARQ resource configuration, and the terminal device is instructed to successfully send the data on the configuration authorization resource of the SL, or the network device may release or schedule retransmission resources previously scheduled to the terminal device to another terminal device according to the ACK information reported by the terminal device. Wherein, the retransmission resource is an unused retransmission resource allocated to the terminal device by the base station. Or, the dynamic authorized ACK information is sent on the HARQ resource associated with the HARQ resource configuration, and the terminal device is instructed to successfully send the data on the SL dynamic authorized resource, or the network device may release or schedule the retransmission resource previously scheduled to the terminal device to another terminal device according to the ACK information reported by the terminal device. Wherein, the retransmission resource is an unused retransmission resource allocated to the terminal device by the base station.

Operation 503: and the network equipment allocates retransmission resources for the terminal equipment.

Similar to operation 203, the optional operations including operation 203 are not described in detail herein.

Operation 504: the terminal equipment acquires retransmission resources allocated by the network equipment.

Similar to operation 204, the optional operations including operation 204 are not described in detail herein.

Operation 505: the terminal device retransmits the data on SL.

Similar to operation 205, optional operations including operation 205 are not described herein.

By the method provided by the embodiment, exemplary beneficial effects comprise: the terminal device reports success of edge link transmission to the base station, and the exemplary beneficial effects include: the network device can release the retransmission resource of the TB corresponding to the ACK previously scheduled to the terminal device, and can schedule the retransmission resource to another terminal device. The terminal device reports the side link transmission failure to the base station, and the exemplary beneficial effect includes that the network device schedules retransmission resources for the data corresponding to the NACK of the terminal device.

The following embodiment is a technical solution of an embodiment of the present application, and exemplarily, taking SL as the SL as an example, the communication method 600 corresponding to the embodiment may include:

operation 601: the network device sends the configuration information to the terminal device.

Optionally, the configuration information is used to configure the terminal device to directly perform retransmission of data failed to be transmitted on the SL on the configuration authorized resource of the SL, or the terminal device performs retransmission of data failed to be transmitted on the SL on the retransmission resource of the SL dynamically scheduled by the base station.

Optionally, the configuration information is used to configure the terminal device to directly perform retransmission of data failed in transmission on the SL on the configuration authorized resource of the SL, or the terminal device sends an SL retransmission request or an SL transmission failure indication to the network device.

Optionally, the data that fails to be transmitted on the SL may include data that fails to be transmitted on a configuration authorized resource of the SL, and/or data that fails to be transmitted on a dynamic authorized resource of the SL.

Operation 602: and the terminal equipment acquires retransmission resources.

The terminal equipment fails to transmit data on the SL, and the terminal equipment acquires retransmission resources of the SL, which are used for transmitting the data which fails to transmit.

Optionally, when the network device configures the terminal device to directly perform retransmission of data failed in transmission on the SL on the configuration authorized resource of the SL, the terminal device may send a SL retransmission request or a SL transmission failure indication to the network device, or may not need to send the SL retransmission request or the SL transmission failure indication to the network device.

Optionally, when the network device configures the terminal device to perform retransmission of data failed in transmission on the SL on the retransmission resource of the SL dynamically scheduled by the base station, the terminal device may send an SL retransmission request or an SL transmission failure indication to the network device.

Or, optionally, when the network device configures the terminal device to send the SL retransmission request or the SL transmission failure indication to the network device, the terminal device may subsequently retransmit the data that has failed in the SL transmission on the retransmission resource of the SL dynamically scheduled by the base station.

For the terminal device to send the SL retransmission request or the SL transmission failure indication to the network device, reference may be made to methods 200 to 500, which are not described herein again.

Based on the similar technical concepts, the present application provides a terminal device or a network device, where the terminal device or the network device may be the terminal device or the network device in the communication method provided in the foregoing embodiments 200 to 600 and any possible design thereof, and the terminal device or the network device may include at least one unit for executing the method steps or operations or behaviors performed by the terminal device or the network device in the communication method provided in the foregoing embodiments 200 to 600. The setting of the at least one unit may have a one-to-one correspondence relationship with method steps or operations or behaviors performed by the terminal device or the network device.

Illustratively, the structure and function of the terminal device 700 will be specifically described below with reference to fig. 7 in the embodiment of the present application, and fig. 7 is a schematic block diagram of the terminal device 700 provided in the embodiment of the present application.

Illustratively, the present application provides a terminal device 700, which may include: a sending module 701, configured to send data on a configuration authorized resource of a first link; the sending module 701 is further configured to send first information to a network device, where the first information indicates that the terminal device 700 successfully sends the data on the configuration authorized resource of the first link; or, the first information indicates that the terminal device 700 fails to transmit the data on the configured authorized resource of the first link; or, the first information is used for requesting a first retransmission resource of the first link for the data which fails to be transmitted on the configuration authorization resource of the first link; the first link is a direct wireless communication link between the terminal device 700 and another terminal device 700, for example, an edge link. By the present method, exemplary benefits include: the method and the device can enable the network device to acquire the data transmission condition on the side link configuration authorized resource, and thus can provide reference information for the network device to schedule corresponding retransmission resources subsequently and possibly. The method includes that the terminal device reports success of edge link transmission to a base station, and the method has the exemplary beneficial effects that the network device can release or schedule retransmission resources previously scheduled to the terminal device to other terminal devices according to the network device; or, the terminal device reports the edge link transmission failure to the base station, and the exemplary beneficial effect includes that the network device can schedule retransmission resources for the terminal device; alternatively, the terminal device requests retransmission resources from the base station, and exemplary beneficial effects include enabling the network device to schedule the retransmission resources for the terminal device.

Optionally, the terminal device 700 further includes an obtaining module 702, configured to receive configuration information from the network device, where the configuration information is used to configure a sending resource of the first information. By the present method, exemplary benefits include: the transmission resource of the first information may be configured such that the first information may be transmitted to the network device through the configured transmission resource.

Optionally, the first information is a first scheduling request SR. By the present method, exemplary benefits include: the network device can obtain the data transmission failure condition on the side link configuration authorized resource through the first SR reported by the terminal device 700, so that reference information can be provided for the network device to schedule the first retransmission resource of the first link subsequently.

Optionally, the configuration information is SR configuration information. By the present method, exemplary benefits include: a transmission resource may be configured for the first SR such that the first SR may be transmitted to the network device through the configured transmission resource.

Optionally, the size of the transport block corresponding to the configured authorized resource is not greater than the first threshold; the size of the transport block corresponding to the first retransmission resource is not less than a first threshold. By the present method, exemplary benefits include: it can be ensured that the first retransmission resource allocated to the terminal device 700 by the network device can still meet the current retransmission requirement of the terminal device 700 even if the terminal device 700 does not report the size of the currently required retransmission resource.

Optionally, the first information is a first buffer status report BSR; the first BSR includes at least one of: the number of the failed transmission TBs on the granted resources for configuration of the first link, the buffer size of each failed transmission TB on the granted resources for configuration of the first link, and the total buffer size of all the failed transmission TBs on the granted resources for configuration of the first link; alternatively, the first BSR includes at least one of: the number of hybrid automatic repeat request (HARQ) processes with transmission failure on the configuration authorized resource of the first link, the buffer size of the HARQ processes with transmission failure on the configuration authorized resource of the first link, and the total buffer size of each HARQ process with transmission failure on the configuration authorized resource of the first link. By the present method, exemplary benefits include: the method and the device can enable the network device to acquire the condition of data transmission failure on the side link configuration authorized resource, so that reference information can be provided for the network device to schedule the first retransmission resource of the first link.

Optionally, the configuration authorization is a first type configuration authorization and/or a second type configuration authorization; wherein, the first type configuration authorization provides side link configuration authorization for the network equipment through Radio Resource Control (RRC) signaling; the second type configuration authorization defines a period of side link configuration authorization for the network device through Radio Resource Control (RRC) signaling, and activates the side link configuration authorization through a Physical Downlink Control Channel (PDCCH) or DCI. By the present method, exemplary benefits include: the network device can acquire the data transmission condition on the first type configuration authorized resource and/or the second type configuration authorized resource of the side link, so that reference information can be provided for the network device to schedule corresponding retransmission resources subsequently and possibly.

Optionally, the size of the TB with transmission failure on the grant resource configured for the first link or the size of the TB corresponding to the HARQ process with transmission failure on the grant resource configured for the first link is not greater than the first threshold; the size of the transport block corresponding to the first retransmission resource is not less than a first threshold. By the present method, exemplary benefits include: it can be ensured that even if the terminal device 700 does not report the size of the retransmission resource that is currently required, the retransmission resource that the network device allocates to the terminal device 700 can still meet the current retransmission requirement of the terminal device 700.

Optionally, the number of the first retransmission resources may be equal to the number of transport blocks TB or the number of HARQ processes failing transmission on the configuration granted resource of the first link. By the present method, exemplary benefits include: it is possible to enable each transport block TB or HARQ process that fails to transmit of the terminal device 700 to acquire reasonable retransmission resources.

Illustratively, the present application provides a terminal device 700, which may include: a sending module 701, configured to send data on a dynamic grant resource of a first link; the sending module 701 is further configured to send second information to the network device, where the second information indicates that the terminal device 700 successfully sends the data on the dynamic authorized resource of the first link; or, the second information indicates that the terminal device 700 fails to transmit the data on the dynamically authorized resource of the first link; or, the second information is used for requesting a second retransmission resource of the first link for the data which fails to be transmitted on the dynamic authorized resource of the first link; the first link is a direct wireless communication link between the terminal device 700 and another terminal device 700, for example, an edge link. By the present method, exemplary benefits include: the network device can acquire the data transmission condition on the side link dynamic authorization resource, so that reference information can be provided for the network device to schedule the retransmission resource of the corresponding first link. The method includes that the terminal device reports success of edge link transmission to a base station, and the method has the exemplary beneficial effects that the network device can release or schedule retransmission resources previously scheduled to the terminal device to other terminal devices according to the network device; or, the terminal device reports the edge link transmission failure to the base station, and the exemplary beneficial effect includes that the network device can schedule retransmission resources for the terminal device; alternatively, the terminal device requests retransmission resources from the base station, and exemplary beneficial effects include enabling the network device to schedule the retransmission resources for the terminal device.

Optionally, the terminal device 700 may further include an obtaining module 702, configured to receive configuration information from the network device, where the configuration information is used to configure a sending resource of the second information. By the present method, exemplary benefits include: a transmission resource may be configured for the second information such that the second information may be transmitted to the network device through the configured transmission resource.

Optionally, the second information is a second scheduling request SR. By the present method, exemplary benefits include: the network device can obtain the data transmission failure condition on the side link dynamic authorization resource through the second SR reported by the terminal device 700, so that reference information can be provided for the network device to schedule the second retransmission resource of the first link subsequently.

Optionally, the configuration information is SR configuration information. By the present method, exemplary benefits include: a transmission resource may be configured for the second SR such that the second SR may be transmitted to the network device through the configured transmission resource.

Optionally, the size of the transport block corresponding to the dynamic grant resource is not greater than the first threshold; the transport block size corresponding to the second retransmission resource is not less than the first threshold. By the present method, exemplary benefits include: it can be ensured that the second retransmission resource allocated to the terminal device 700 by the network device can still meet the current retransmission requirement of the terminal device 700 even if the terminal device 700 does not report the size of the currently required retransmission resource.

Optionally, the second information is a second buffer status report BSR; the second BSR includes at least one of: the number of the failed transmission TBs on the dynamic authorized resource of the first link, the buffer size of each failed transmission TB on the dynamic authorized resource of the first link, and the total buffer size of all the failed transmission TBs on the dynamic authorized resource of the first link; alternatively, the second BSR includes at least one of: the number of hybrid automatic repeat request (HARQ) processes with transmission failure on the dynamic authorized resource of the first link, the buffer size of each HARQ process with transmission failure on the dynamic authorized resource of the first link, and the total buffer size of all the HARQ processes with transmission failure on the dynamic authorized resource of the first link. By the present method, exemplary benefits include: the network device can acquire the condition of data transmission failure on the side link dynamic authorization resource through the second BSR, so that reference information can be provided for the network device to schedule the second retransmission resource of the first link subsequently.

Optionally, the size of the TB with transmission failure on the dynamic grant resource of the first link or the size of the TB corresponding to the HARQ process with transmission failure on the dynamic grant resource of the first link is not greater than the first threshold; the transport block size corresponding to the second retransmission resource is not less than the first threshold. By the present method, exemplary benefits include: it can be ensured that even if the terminal device 700 does not report the size of the retransmission resource that is currently required, the retransmission resource that the network device allocates to the terminal device 700 can still meet the current retransmission requirement of the terminal device 700.

Optionally, the number of the second retransmission resources is equal to the number of the transport blocks TB or the number of HARQ processes that failed transmission on the dynamic grant resource of the first link. By the present method, exemplary benefits include: it is possible to enable each transport block TB or HARQ process that fails to transmit of the terminal device 700 to acquire reasonable retransmission resources.

Illustratively, the present application provides a terminal device 700, which may include: a sending module 701, configured to send data on a transmission resource of a first link; the sending module 701 is further configured to send a buffer status report BSR to the network device, where the BSR is configured to request retransmission resources of a first link for data that is failed to be transmitted on transmission resources of the first link; the BSR includes at least one of: the number of the HARQ processes with transmission failure, the buffer size of each HARQ process with transmission failure and the total buffer size of all the HARQ processes with transmission failure; the first link is a direct wireless communication link between the terminal device 700 and another terminal device 700, for example, an edge link. By the present method, exemplary benefits include: the network device can acquire the data transmission condition on the side link transmission resource, so that the reference information can be provided for the corresponding retransmission resource possibly scheduled by the network device.

Optionally, the size of the transport block corresponding to the HARQ process with transmission failure is not greater than the first threshold; the size of the transport block corresponding to the retransmission resource is not less than a first threshold. By the present method, exemplary benefits include: it can be ensured that the second retransmission resource allocated to the terminal device 700 by the network device can still meet the current retransmission requirement of the terminal device 700 even if the terminal device 700 does not report the size of the currently required retransmission resource.

Optionally, the number of the retransmission resources is equal to the number of HARQ processes that failed transmission on the transmission resources of the first link. By the present method, exemplary benefits include: each HARQ process of terminal device 700 that fails to transmit can be made to obtain reasonable retransmission resources.

For example, the structure and function of the network device 800 will be specifically described below with reference to fig. 8 in an embodiment of the present application, and fig. 8 is a schematic block diagram of the network device 800 provided in the embodiment of the present application.

Illustratively, the present application provides a network device 800, which may include: an obtaining module 801, configured to receive first information from a terminal device, where the first information indicates that the terminal device successfully sends the data on the configuration authorized resource of the first link; or, the first information indicates that the terminal device fails to send the data on the configuration authorized resource of the first link; or, the first information is used for requesting a first retransmission resource of the first link for the data which fails to be transmitted on the configuration authorization resource of the first link; a processing module 802, configured to allocate a first retransmission resource to the terminal device according to the first information, where the first retransmission resource is used for the terminal device to retransmit data that fails to be transmitted on the configuration authorized resource of the first link; the first link is a direct connection wireless communication link between the terminal device and another terminal device, for example, an edge link. By the present method, exemplary benefits include: the method and the device can enable the network equipment to obtain the data transmission condition on the side link configuration authorized resource, and thus can provide reference information for the network equipment to schedule corresponding retransmission resources subsequently and possibly, and further ensure the reliability of side link transmission. The method includes that the terminal device reports success of edge link transmission to a base station, and the method has the exemplary beneficial effects that the network device can release or schedule retransmission resources previously scheduled to the terminal device to other terminal devices according to the network device; or, the terminal device reports the edge link transmission failure to the base station, and the exemplary beneficial effect includes that the network device can schedule retransmission resources for the terminal device; alternatively, the terminal device requests retransmission resources from the base station, and exemplary beneficial effects include enabling the network device to schedule the retransmission resources for the terminal device.

Optionally, the network device 800 further includes a sending module 803, configured to send configuration information to the terminal device, where the configuration information is used to configure sending resources of the first information. By the present method, exemplary benefits include: a transmission resource may be configured for the first information such that the first information may be transmitted to the network device 800 through the configured transmission resource.

Optionally, the first information is a first scheduling request SR. By the present method, exemplary benefits include: the network device 800 can obtain the data transmission failure condition on the side link configuration authorized resource through the first SR reported by the terminal device, so that reference information can be provided for the network device 800 to schedule the first retransmission resource of the first link subsequently.

Optionally, the configuration information is SR configuration information. By the present method, exemplary benefits include: a transmission resource may be configured for the first SR such that the first SR can be transmitted to the network device 800 through the configured transmission resource.

Optionally, the size of the transport block corresponding to the configured authorized resource is not greater than the first threshold; the size of the transport block corresponding to the first retransmission resource is not less than a first threshold. By the present method, exemplary benefits include: it can be ensured that the first retransmission resource allocated to the terminal device by the network device 800 can still meet the current retransmission requirement of the terminal device even if the terminal device does not report the size of the retransmission resource currently required.

Optionally, the first information is a first buffer status report BSR; the first BSR includes at least one of: the number of the failed transmission TBs on the granted resources for configuration of the first link, the buffer size of each failed transmission TB on the granted resources for configuration of the first link, and the total buffer size of all the failed transmission TBs on the granted resources for configuration of the first link; alternatively, the first BSR includes at least one of: the number of hybrid automatic repeat request (HARQ) processes with transmission failure on the configuration authorized resource of the first link, the buffer size of each HARQ process with transmission failure on the configuration authorized resource of the first link, and the total buffer size of all the HARQ processes with transmission failure on the configuration authorized resource of the first link. By the present method, exemplary benefits include: the network device 800 may be enabled to obtain a situation that data transmission on the side link configuration authorized resource fails, so that reference information may be provided for a first retransmission resource of the first link that may be subsequently scheduled by the network device 800.

Optionally, the configuration authorization is a first type configuration authorization and/or a second type configuration authorization; wherein, the first type configuration authorization provides side link configuration authorization for the network equipment through Radio Resource Control (RRC) signaling; the second type configuration authorization defines a period of side link configuration authorization for the network device through Radio Resource Control (RRC) signaling, and activates the side link configuration authorization through a Physical Downlink Control Channel (PDCCH) or DCI. By the present method, exemplary benefits include: the network device 800 may obtain the data transmission condition on the side link first-type configuration authorized resource and/or the second-type configuration authorized resource, so as to provide reference information for the network device 800 to schedule corresponding retransmission resources subsequently.

Optionally, the size of the TB with transmission failure on the grant resource configured for the first link or the size of the TB corresponding to the HARQ process with transmission failure on the grant resource configured for the first link is not greater than the first threshold; the size of the transport block corresponding to the first retransmission resource is not less than a first threshold. By the present method, exemplary benefits include: it can be ensured that the retransmission resource allocated to the terminal device by the network device 800 can still meet the current retransmission requirement of the terminal device even if the terminal device does not report the size of the retransmission resource currently required.

Optionally, the number of the first retransmission resources is equal to the number of transport blocks TB or the number of HARQ processes failed in transmission on the configuration authorized resource of the first link. By the present method, exemplary benefits include: each transport block TB or HARQ process which fails to transmit of the terminal equipment can acquire reasonable retransmission resources.

Illustratively, the present application provides a network device 800, which may include: an obtaining module 801, configured to receive second information from a terminal device, where the second information indicates that the terminal device successfully sends the data on the dynamic authorized resource of the first link; or, the second information indicates that the terminal device fails to send the data on the dynamic authorized resource of the first link; or, the second information is used for requesting a second retransmission resource of the first link for the data which fails to be transmitted on the dynamic authorized resource of the first link; a processing module 802, configured to allocate a second retransmission resource to the terminal device according to the second information, where the second retransmission resource is used for the terminal device to retransmit a TB in which transmission on the dynamic grant resource of the first link fails; the first link is a direct connection wireless communication link between the terminal device and another terminal device, for example, an edge link. By the present method, exemplary benefits include: the method and the device can enable the network device to obtain the data transmission condition on the side link dynamic authorization resource, and thus can provide reference information for the network device to schedule corresponding retransmission resources subsequently and possibly, and further ensure the reliability of side link transmission. The method includes that the terminal device reports success of edge link transmission to a base station, and the method has the exemplary beneficial effects that the network device can release or schedule retransmission resources previously scheduled to the terminal device to other terminal devices according to the network device; or, the terminal device reports the edge link transmission failure to the base station, and the exemplary beneficial effect includes that the network device can schedule retransmission resources for the terminal device; alternatively, the terminal device requests retransmission resources from the base station, and exemplary beneficial effects include enabling the network device to schedule the retransmission resources for the terminal device.

Optionally, the network device 800 further includes a sending module 803, configured to send configuration information to the terminal device, where the configuration information is used to configure sending resources of the second information. By the present method, exemplary benefits include: a transmission resource may be configured for the second information such that the second information may be transmitted to the network device 800 through the configured transmission resource.

Optionally, the second information is a second scheduling request SR, and the second SR is configured to request a second retransmission resource of the first link for data that fails to be transmitted on the dynamic grant resource of the first link. By the present method, exemplary benefits include: the network device 800 may obtain, through the second SR reported by the terminal device, a condition that data transmission on the side link dynamic authorization resource fails, so that reference information may be provided for the network device 800 to schedule the second retransmission resource of the first link subsequently.

Optionally, the configuration information is SR configuration information. By the present method, exemplary benefits include: a transmission resource may be configured for the second SR so that the second SR may be transmitted to the network device 800 through the configured transmission resource.

Optionally, the size of the transport block corresponding to the dynamic grant resource is not greater than the first threshold; the transport block size corresponding to the second retransmission resource is not less than the first threshold. By the present method, exemplary benefits include: it can be ensured that the second retransmission resource of the first link allocated to the terminal device by the network device 800 can still meet the current retransmission requirement of the terminal device even if the terminal device does not report the size of the retransmission resource currently required.

Optionally, the second information is a second buffer status report BSR; the second BSR includes at least one of: the number of the failed transmission TBs on the dynamic authorized resource of the first link, the buffer size of each failed transmission TB on the dynamic authorized resource of the first link, and the total buffer size of all the failed transmission TBs on the dynamic authorized resource of the first link; alternatively, the second BSR includes at least one of: the number of hybrid automatic repeat request (HARQ) processes with transmission failure on the dynamic authorized resource of the first link, the buffer size of each HARQ process with transmission failure on the dynamic authorized resource of the first link, and the total buffer size of all the HARQ processes with transmission failure on the dynamic authorized resource of the first link. By the present method, exemplary benefits include: the network device 800 may obtain, through the second BSR, a case of data transmission failure on the side link dynamic grant resource, which may provide reference information for the network device 800 to schedule the second retransmission resource of the first link subsequently.

Optionally, the size of the TB with transmission failure on the dynamic grant resource of the first link or the size of the TB corresponding to the HARQ process with transmission failure on the dynamic grant resource of the first link is not greater than the first threshold; the transport block size corresponding to the second retransmission resource is not less than the first threshold. By the present method, exemplary benefits include: it can be ensured that the retransmission resource allocated to the terminal device by the network device 800 can still meet the current retransmission requirement of the terminal device even if the terminal device does not report the size of the retransmission resource currently required.

Optionally, the number of the second retransmission resources is equal to the number of the transport blocks TB or the number of HARQ processes that failed transmission on the dynamic grant resource of the first link. By the present method, exemplary benefits include: each transport block TB or HARQ process which fails to transmit of the terminal equipment can acquire reasonable retransmission resources.

Illustratively, the present application provides a network device 800, which may include: an obtaining module 801, configured to receive a buffer status report BSR from a terminal device, where the BSR is configured to request retransmission resources of a first link for data that is failed to be transmitted on transmission resources of the first link; the BSR includes at least one of: the number of the HARQ processes with transmission failure on the resource of the first link, the buffer size of each HARQ process with transmission failure on the resource of the first link, and the total buffer size of all the HARQ processes with transmission failure on the resource of the first link; a processing module 802, configured to allocate, according to the BSR, a retransmission resource for the terminal device to retransmit a HARQ process that fails to transmit on the transmission resource of the first link; the first link is a direct connection wireless communication link between the terminal device and another terminal device, for example, an edge link. By the present method, exemplary benefits include: the method and the device can enable the network device to obtain the data transmission condition on the side link transmission resource, and thus can provide reference information for the network device to schedule corresponding retransmission resources subsequently and possibly, and further ensure the reliability of side link transmission.

Optionally, the size of the transport block corresponding to the HARQ process with transmission failure is not greater than the first threshold; the size of the transport block corresponding to the retransmission resource is not less than a first threshold. By the present method, exemplary benefits include: it can be ensured that the second retransmission resource allocated to the terminal device by the network device 800 can still meet the current retransmission requirement of the terminal device even if the terminal device does not report the size of the retransmission resource currently required.

Optionally, the number of the retransmission resources is equal to the number of HARQ processes that failed transmission on the transmission resources of the first link. By the present method, exemplary benefits include: each HARQ process of the terminal equipment with transmission failure can acquire reasonable retransmission resources.

Illustratively, the present application provides a network device 800, which may include: a processing module 802, configured to allocate a first transmission resource of a first link to a terminal device, where a size of a transmission block corresponding to the transmission resource is not greater than a first threshold; the processing module 802 is further configured to allocate a retransmission resource to the terminal device, where a size of a transport block corresponding to the retransmission resource is not smaller than the first threshold. The first link is a direct connection wireless communication link between the terminal device and another terminal device, for example, an edge link. By the present method, exemplary benefits include: the retransmission resource distributed to the terminal equipment by the network equipment can still meet the current retransmission requirement of the terminal equipment even if the terminal equipment does not report the size of the retransmission resource required currently.

Optionally, the network device 800 may further include an obtaining module 801, configured to receive request information from the terminal device before the network device 800 allocates the retransmission resource to the terminal device, where the request information is used to request the network device 800 to allocate the retransmission resource to the terminal device. By the present method, exemplary benefits include: the network device 800 can allocate retransmission resources to the terminal device according to the request of the terminal device, thereby ensuring the reliability of edge link transmission.

Optionally, the network device 800 may further include a sending module 803, configured to send configuration information to the terminal device, where the configuration information is used to configure sending resources of the request information. By the present method, exemplary benefits include: the request information of the terminal device may be caused to be transmitted to the network device 800 on the transmission resource configured by the network device 800.

Optionally, the request message is a scheduling request SR, or a buffer status report BSR, or a feedback indication, where the feedback indication is used to indicate that the terminal device successfully transmits data on the transmission resource of the first link; or, the second information indicates that the terminal device failed to transmit data on the transmission resource of the first link. By the present method, exemplary benefits include: the terminal device can flexibly select different modes and carriers to request retransmission resources from the network device 800.

Optionally, the SR configuration may be configuration information of a common SR (for example, the same SR configuration as that requesting the SL to newly transmit the resource) or configuration information of an SR requesting the SL to retransmit the resource. By the present method, exemplary benefits include: the network device 800 may be caused to process the request information according to the resource on which the SR information was received.

Illustratively, the present application provides a network device 800, which may include: a sending module 803, configured to send configuration information to a terminal device; the configuration information is used for configuring the terminal equipment to retransmit data which is failed to be transmitted on a first link on a configuration authorization resource of the first link; or, the terminal device is configured to retransmit the data failed to be transmitted on the first link on the retransmission resource of the first link dynamically scheduled by the base station; or configuring the terminal device to send a first link retransmission request or a first link transmission failure indication to the network device; the first link is a direct connection wireless communication link between the terminal device and other terminal devices.

Optionally, the data that fails to be transmitted on the first link may include data that fails to be transmitted on the configured authorized resource of the first link, and/or data that fails to be transmitted on the dynamic authorized resource of the first link.

Optionally, the configuration information is configured to configure the terminal device to perform retransmission of data that is failed to be transmitted on the first link on retransmission resources of the first link dynamically scheduled by the base station, and includes: when the terminal equipment fails to transmit data on the first link, the terminal equipment sends a first link retransmission request or a first link transmission failure indication to the network equipment.

It should be noted that, these module units of the above embodiments may be implemented by a computer program, may also be implemented by a hardware circuit, and may also be implemented by a computer program in combination with a hardware circuit. For example, the receiving module and the transmitting module may be implemented by one transceiver, or an interface circuit, or a transceiver, or the receiving module may be implemented by a separate receiver, the transmitting module may be implemented by a separate receiver, and the processing module may be implemented by a processor having a data processing function.

Based on the same technical concept, the embodiment of the present application further provides a communication apparatus, which may be used to implement the function executed by any terminal device or any network device in the foregoing method embodiments. The structure and function of the communication apparatus 900 will be described in detail with reference to fig. 9 in the embodiment of the present application, and fig. 9 is a schematic block diagram of the communication apparatus 900 provided in the embodiment of the present application. The communication apparatus may comprise at least one processor 901 and a power supply circuit 905, and when the related program instructions are executed in the at least one processor 901, the communication apparatus 900 may be enabled to implement the communication method provided by the methods 200 to 600 and the functions of the terminal device or the network device in any design thereof. The power supply circuit 905 may be used to power the processor 901. Alternatively, the power supply circuit 905 may be located in the same chip as the processor 901, or in another chip other than the chip where the processor 901 is located. Optionally, the communications apparatus 900 may also include at least one memory 902, where the memory 902 may be used to store desired related program instructions, and/or data. Optionally, the communication apparatus 900 may further include a transceiver 903, where the transceiver 903 may be used for the communication apparatus 900 to perform communication interaction with other communication devices (such as radio access network devices or terminal devices, which is not limited herein), such as interaction control signaling, and/or service data, and the transceiver 903 may be implemented by a circuit having a communication transceiving function. Optionally, as shown in fig. 9, the communication device 900 may further include a bus 904, and various portions of the communication device 900 may be interconnected by the bus 904.

The embodiment of the present application provides a system chip 1000. The structure and function of the system chip 1000 are specifically described below with reference to fig. 10 in the embodiment of the present application, and fig. 10 is a schematic block diagram of the system chip 1000 provided in the embodiment of the present application. The system chip 1000 may be applied to any terminal device or any network device, and the processing of the system chip enables the terminal device or the network device to perform the communication method provided by the methods 200 to 600 in the embodiments of the present application and the operation of the terminal device or the network device in any possible design thereof. As shown in fig. 10, the system chip 1000 may include at least one processor 1001 and a power supply circuit 1005, and when the program instructions involved are executed in the at least one processor 1001, the operations of the terminal device or the network device in the communication method and any possible design thereof provided by the embodiments 200-600 of the present application are implemented. The power supply circuit 1005 may be used to supply power to the processor 1001. Alternatively, the power supply circuit 1005 may be located on the same chip as the processor 1001, or on another chip than the chip on which the processor 1001 is located. Optionally, the system chip 1000 may further include at least one memory 1002, where the memory 1002 stores related program instructions. Optionally, the system chip 1000 may further include an interface circuit 1003 and a bus 1004; the at least one processor 1001, the at least one memory 1002, and the interface circuit 1003 are coupled via the bus 1004; the system chip 1000 interacts with a terminal device, a network device, or other devices in a network through the interface circuit 1003; alternatively, the processor 1001 and the memory 1002 may be combined into one processing device. For example, in particular implementations, the memory 1002 may be integrated with the processor 1001 or may be separate from the processor 1001.

It should be understood that the processor in the embodiments of the present application may be a Central Processing Unit (CPU), and the processor may also be other general-purpose processors, Digital Signal Processors (DSPs), Application Specific Integrated Circuits (ASICs), Field Programmable Gate Arrays (FPGAs) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, and the like. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.

It will also be appreciated that the memory in the embodiments of the subject application can be either volatile memory or nonvolatile memory, or can include both volatile and nonvolatile memory. The non-volatile memory may be a read-only memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an electrically Erasable EPROM (EEPROM), or a flash memory. Volatile memory can be Random Access Memory (RAM), which acts as external cache memory. By way of example, but not limitation, many forms of Random Access Memory (RAM) are available, such as Static RAM (SRAM), Dynamic RAM (DRAM), Synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), Enhanced SDRAM (ESDRAM), synchlink DRAM (SLDRAM), and direct bus RAM (DR RAM).

The power supply circuit according to the embodiment of the present application includes, but is not limited to, at least one of the following: the power supply system comprises a power supply subsystem, an electric tube management chip, a power consumption management processor or a power consumption management control circuit.

The transceiver, or the interface circuit, or the transceiver according to the embodiments of the present application may include a separate transmitter and/or a separate receiver, or may be an integrated body of the transmitter and the receiver. The transceiver means, interface circuit or transceivers may operate under the direction of a corresponding processor. Alternatively, the sender may correspond to a transmitter in the physical device, and the receiver may correspond to a receiver in the physical device.

It will be clear to those skilled in the art that, for convenience and simplicity of description, the foregoing division of the functional modules is merely used as an example, and in practical applications, the above function distribution may be performed by different functional modules according to needs, that is, the internal structure of the device is divided into different functional modules to perform all or part of the above described functions. For the specific working processes of the system, the apparatus and the unit described above, reference may be made to the corresponding processes in the foregoing method embodiments, and details are not described here again.

In the embodiments of the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the module or unit is only one logical division, and there may be other divisions when actually implemented, for example, a plurality of units or components may be combined or may be integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.

Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

In the embodiment of the present application, units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may also be distributed on multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiments of the present application.

In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.

The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solutions of the present application may be substantially implemented or contributed by the prior art, or all or part of the technical solutions may be embodied in a software product, which is stored in a storage medium and may include instructions for causing a computer device, such as a personal computer, a server, or a radio access network device, to execute all or part of the operations of the method according to the embodiments of the present application, or a processor (processor). And the aforementioned storage medium may include: a U-disk, a removable hard disk, a read-only memory (ROM), a Random Access Memory (RAM), a magnetic or optical disk, or other various media or computer storage media capable of storing program codes.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application.

Claims

1. A method of communication, comprising:

the terminal equipment transmits data on the configuration authorization resource of the first link;

the terminal equipment sends first information to network equipment, wherein the first information is used for requesting a first retransmission resource of the first link for the data which fails to be transmitted on the configuration authorization resource of the first link;

the first link is a direct connection wireless communication link between the terminal device and other terminal devices.

2. A method of communication, comprising:

and the terminal equipment sends first information to network equipment, wherein the first information is indication information of data failure sent by the terminal equipment on the configuration authorization resource of the first link.

3. The method according to claim 1 or 2, comprising:

and the terminal equipment receives configuration information from the network equipment, wherein the configuration information is used for configuring the sending resource of the first information.

4. A method according to any of claims 1-3, characterised in that said first information is a first scheduling request, SR.

5. The method according to any of claims 1-3, wherein the first information is a first Buffer Status Report (BSR);

the first BSR includes at least one of: the number of Transmission Blocks (TB) which fail to be transmitted on the configuration authorized resource of the first link, the buffer size of the TB which fail to be transmitted on the configuration authorized resource of the first link, and the total buffer size of all the TBs which fail to be transmitted on the configuration authorized resource of the first link; alternatively, the first and second electrodes may be,

the first BSR includes at least one of: the number of HARQ processes which fail to be transmitted on the authorized resources configured for the first link, the buffer size of the HARQ processes which fail to be transmitted on the authorized resources configured for the first link, and the total buffer size of all the HARQ processes which fail to be transmitted on the authorized resources configured for the first link.

6. The method according to claim 3 or 4, wherein the configuration information is SR configuration information.

7. The method according to any of claims 1-6, wherein the configuration authorization is a first type of configuration authorization and/or a second type of configuration authorization; wherein the first type configuration authorization provides a side link configuration authorization for the network device through Radio Resource Control (RRC) signaling; the second type configuration authorization defines a period of side link configuration authorization for the network device through a Radio Resource Control (RRC) signaling, and activates the side link configuration authorization through a Physical Downlink Control Channel (PDCCH) or Downlink Control Information (DCI).

8. A method of communication, comprising:

the terminal equipment sends data on the dynamic authorization resource of the first link;

the terminal equipment sends second information to network equipment, wherein the second information is used for requesting a second retransmission resource of the first link for the data which fails to be transmitted on the dynamic authorized resource of the first link;

9. A method of communication, comprising:

and the terminal equipment sends second information to network equipment, wherein the second information is indication information of data failure sent by the terminal equipment on the dynamic authorized resource of the first link.

10. The method according to claim 8 or 9, comprising:

and the terminal equipment receives configuration information from the network equipment, wherein the configuration information is used for configuring the sending resource of the second information.

11. The method according to any of claims 8-10, wherein said second information is a second scheduling request, SR.

12. The method according to any of claims 8-10, wherein the second information is a second buffer status report BSR;

the second BSR includes at least one of: the number of Transport Blocks (TBs) with failed transmission on the dynamic authorized resource of the first link, the buffer size of the TBs with failed transmission on the dynamic authorized resource of the first link, and the total buffer size of all the TBs with failed transmission on the dynamic authorized resource of the first link; alternatively, the first and second electrodes may be,

the second BSR includes at least one of: the number of HARQ processes which fail to transmit on the dynamic authorized resource of the first link, the buffer size of the HARQ processes which fail to transmit on the dynamic authorized resource of the first link, and the total buffer size of all the HARQ processes which fail to transmit on the dynamic authorized resource of the first link.

13. The method according to claim 10 or 11, wherein the configuration information is SR configuration information.

14. A method of communication, comprising:

the method comprises the steps that network equipment receives first information from terminal equipment, wherein the first information is used for requesting first retransmission resources of a first link for data which are transmitted in failure on configuration authorization resources of the first link;

the network equipment allocates a first retransmission resource for the terminal equipment according to the first information, wherein the first retransmission resource is used for the terminal equipment to retransmit data which is failed to be transmitted on the configuration authorization resource of the first link;

15. A method of communication, comprising:

the network equipment receives first information from terminal equipment, wherein the first information is indication information of data failure sent by the terminal equipment on the configuration authorization resource of the first link;

16. The method according to claim 14 or 15, comprising:

and the network equipment sends configuration information to the terminal equipment, wherein the configuration information is used for configuring the sending resource of the first information.

17. The method according to any of the claims 14-16, wherein said first information is a first scheduling request, SR.

18. The method according to any of claims 14-16, wherein the first information is a first buffer status report BSR;

19. The method according to claim 16 or 17, wherein the configuration information is SR configuration information.

20. A method according to any of claims 14-19, wherein the configuration authorization is a first type of configuration authorization and/or a second type of configuration authorization; wherein the first type configuration authorization provides a side link configuration authorization for the network device through Radio Resource Control (RRC) signaling; the second type configuration authorization defines a period of side link configuration authorization for the network device through a Radio Resource Control (RRC) signaling, and activates the side link configuration authorization through a Physical Downlink Control Channel (PDCCH) or Downlink Control Information (DCI).

21. A method of communication, comprising:

the network equipment receives second information from the terminal equipment, wherein the second information is used for requesting a second retransmission resource of the first link for the data which fails to be transmitted on the dynamic authorized resource of the first link;

the network equipment allocates a second retransmission resource for the terminal equipment according to the second information, wherein the second retransmission resource is used for the terminal equipment to retransmit data failed in transmission on the dynamic authorization resource of the first link;

22. A method of communication, comprising:

the network equipment receives second information from the terminal equipment, wherein the second information is indication information of data failure sent by the terminal equipment on the dynamic authorized resource of the first link;

23. The method of claim 21 or 22, comprising:

24. The method according to any of the claims 21-23, wherein said second information is a second scheduling request, SR.

25. The method according to any of claims 21-23, wherein the second information is a second buffer status report BSR;

26. The method according to claim 23 or 24, wherein the configuration information is SR configuration information.

27. A communications apparatus, comprising: at least one processor and power supply circuitry for supplying power to the processor, the program instructions involved being executable in the at least one processor to cause the communication apparatus to carry out the functions of the terminal device or the network device according to any of the methods of claims 1-26.

28. A computer storage medium, wherein the computer readable storage medium has stored therein related program instructions, which when executed, implement the functions of the terminal device or the network device according to any one of claims 1-26.

29. A computer program product comprising program instructions involved, which when executed, implement the functionality of the terminal device or the network device in the method according to any of claims 1-26.

30. A communication system, comprising one or more of: communication apparatus according to claim 27, or a computer storage medium according to claim 28, or a computer program product according to claim 29.