CN115765936A - Method, device and system for processing sidelink resources - Google Patents

Abstract

Embodiments of the present application provide a method, device, and system for processing sidelink resources, which relate to the field of communication technologies. It is configured to process the allocated side link resource for retransmitting the data packet when the first terminal does not send the HARQ information to the network device. The first terminal determines that the confirmation information of the first sidelink hybrid automatic repeat request HARQ process is not sent to the network device at the first moment; the confirmation information is used to indicate whether the second terminal correctly receives the first terminal in the first sidelink The first data packet of the first sidelink HARQ process sent to the second terminal on the resource; the first terminal determines the second sidelink resource; the HARQ parameter of the second sidelink resource includes a new data indication NDI, and the HARQ process number; if the confirmation information indicates that the second terminal receives the first data packet correctly, the first terminal processes the second sidelink resource according to the HARQ parameter. The solution can be applied to unmanned driving, automatic driving, assisted driving, intelligent driving, connected driving, intelligent connected driving, car sharing, artificial intelligence and other fields.

Description

A method, device and system for processing sidelink resources

technical field

The embodiments of the present application relate to the field of communications technologies, and in particular, to a method, device, and system for processing sidelink resources.

Background technique

In a long-term evolution (long time evolution, LTE) system or a new radio interface (new radio, NR) system, a communication interface between terminals may be called a PC5 interface. The PC5 interface is generally used in vehicle-to-everything (V2X), or D2D and other scenarios where direct communication between devices can be performed. On the PC5 interface, the TX terminal can transmit sidelink data to the RX terminal through a sidelink (SL). In order to ensure reliability of sidelink data transmission, the RX terminal may send HARQ information corresponding to a hybrid automatic repeat request (hybrid autonomous repeat request, HARQ) process to the TX terminal. The HARQ information is used to indicate whether the sidelink data is correctly received by the RX terminal.

After receiving the HARQ information, the TX terminal can send the HARQ information to the network device, so that the network device can re-allocate the sidelink data for retransmission when the network device determines that the sidelink data has not been received correctly according to the HARQ information. Data sidelink resources. When the network device determines that the sidelink data is received correctly according to the HARQ information, the network device allocates sidelink resources for transmitting other sidelink data to the TX terminal.

However, the TX terminal may not be able to send the HARQ information to the network device, or the network device may not be able to receive the HARQ information. In this case, how the TX terminal handles the subsequent HARQ process is not described in the prior art.

Contents of the invention

Embodiments of the present application provide a method, device and system for sending side link resources, which are used to process the allocated side link resources for retransmission of data packets when the first terminal does not send HARQ information to the network device. link resources.

In order to achieve the above purpose, the embodiment of the present application provides the following technical solutions:

In the first aspect, the embodiment of the present application provides a method for processing sidelink resources, including: the first terminal determines that the confirmation information of the first sidelink hybrid automatic repeat request HARQ process is not sent to the network device at the first moment . The confirmation information is used to indicate whether the second terminal correctly receives the first data packet of the first sidelink HARQ process sent by the first terminal to the second terminal on the first sidelink resource. The first terminal determines a second sidelink resource. If the confirmation information indicates that the second terminal correctly receives the first data packet, the first terminal processes the second side link resource according to the HARQ parameter of the second side link resource. Wherein, the HARQ parameters of the second side link resource include a new data indication NDI and a HARQ process number.

An embodiment of the present application provides a method for processing sidelink resources, in which the first terminal may determine that no acknowledgment information is sent to the network device at the first moment, and the acknowledgment information indicates that the second terminal correctly received the first data In the case of a packet, if the first terminal receives the second sidelink resource again. Because the HARQ parameter of the second side link resource includes the NDI indication. The NDI indication is usually used to indicate retransmission or new transmission, and when this happens, the first terminal can process the second sidelink resource according to the HARQ parameters. Since the first data packet is correctly received by the second terminal, the first terminal does not need to retransmit the first data packet, and unnecessary transmission of the first terminal can be avoided by processing the second sidelink resource, And avoid unnecessary feedback from the second terminal.

With reference to the first aspect, in a first possible implementation manner of the first aspect, the first terminal processes the second sidelink resource according to the HARQ parameter of the second sidelink resource, including: the first terminal processes the second sidelink resource according to the first The HARQ parameters of the two side link resources, and the second data packet is transmitted on the second side link resource. In this way, when the first data packet is received correctly, the first terminal uses the second side link resource to perform new transmission.

With reference to the first aspect or the first possible implementation of the first aspect, in the first possible implementation of the first aspect, the first terminal processes the second-side The uplink resource includes: the first terminal ignores the second sidelink resource according to the HARQ parameter of the second sidelink resource. This facilitates avoiding retransmission on the second sidelink resource if the first data packet is received correctly.

Combining the first aspect to the second possible implementation of the first aspect, in the third possible implementation of the first aspect, the HARQ parameter further includes a HARQ process number, and the method provided in this embodiment of the present application further includes: A downlink HARQ process is associated with a first variable, and a value of the first variable is a first parameter value or a second parameter value. Wherein, the first parameter value indicates that the second terminal correctly receives the first data packet, and the second parameter value indicates that the second terminal does not correctly receive the first data packet. The first terminal ignores the second side link resource according to the HARQ parameters of the second side link resource, including: indicating retransmission in the NDI, and the HARQ process number is the process number of the first side link HARQ process, and When the value of the first variable is the value of the first parameter, the first terminal ignores the second side link resource. If the NDI indicates retransmission, and the HARQ process number is the process number of the first sidelink HARQ process, the first terminal may determine that the second sidelink resource is used to retransmit the first data packet, but due to the first The data packet has been correctly received by the second terminal, so the first terminal can ignore the second sidelink resource.

In combination with the first aspect to the third possible implementation of the first aspect, in the fourth possible implementation of the first aspect, the first terminal ignores the second side Uplink resources, including: when the NDI indicates retransmission, and the HARQ process number is the process number of the first sidelink HARQ process, and the HARQ cache of the first sidelink HARQ process is empty, the first The terminal ignores the second sidelink resource. If the NDI indicates retransmission, and the HARQ process number is the process number of the first sidelink HARQ process, the first terminal may determine that the second sidelink resource is used to retransmit the first data packet, but due to the first The HARQ buffer of the sidelink HARQ process is empty, so the first terminal can ignore the second sidelink resource.

Combining the first aspect to the fourth possible implementation of the first aspect, in the fifth possible implementation of the first aspect, the method provided in this embodiment of the present application further includes: the first terminal determines that the first data packet has After being successfully received by the second terminal, the first terminal clears the HARQ buffer of the first sidelink HARQ process.

With reference to the first aspect to the fifth possible implementation of the first aspect, in the sixth possible implementation of the first aspect, according to the HARQ parameter of the second side uplink resource, the first terminal The transmission of the second data packet on the uplink resource includes: when the NDI indicates new transmission, and the HARQ process number is the process number of the first sidelink HARQ process, and the value of the first variable is the first parameter value , the first terminal transmits the second data packet on the second sidelink resource. In this way, if it is determined that the first data packet has been successfully received, if the second side link resource is used for new transmission, the first terminal transmits the second data packet on the second side link resource.

With reference to the sixth possible implementation of the first aspect to the first aspect, in the seventh possible implementation of the first aspect, the first terminal, according to the HARQ parameter of the second side uplink resource, The transmitting the second data packet on the uplink resource includes: under the condition that the NDI indicates new transmission, the first terminal transmits the second data packet on the second side link resource.

Combining the first aspect to the seventh possible implementation manner of the first aspect, in an eighth possible implementation manner of the first aspect, the first terminal determines that no confirmation information is sent to the network device at the first moment, including: the first The time when a terminal determines to send the confirmation information and the time when the first terminal sends the first message are both the first time. In the case where the priority of the physical uplink channel carrying the acknowledgment information is lower than the priority of the first message, or the priority of the physical uplink channel carrying the acknowledgment information is lower than the priority of the sidelink channel carrying the first message Next, the first terminal determines that confirmation information is not sent to the network device at the first moment. Since the time of sending the confirmation information is the same as the time when the first terminal sends the first message, the time of sending the confirmation information conflicts with the time when the first terminal sends the first message, and the priority of the physical uplink channel carrying the confirmation information is lower than that of the first terminal. The priority of a message or the priority of the sidelink channel carrying the first message, therefore, the first terminal may discard the confirmation information not sent to the network device at the first moment.

With reference to the eighth possible implementation manner of the first aspect to the first aspect, in a ninth possible implementation manner of the first aspect, the first message is sent by the first terminal to the network device during the random access process news.

Combining the first aspect to the ninth possible implementation of the first aspect, in the tenth possible implementation of the first aspect, the physical uplink channel is a physical uplink control channel, and the first message is a sidelink SL media The access control MAC protocol data unit PDU, the side link channel carrying the first message is the side link shared channel SL-SCH, and the first terminal according to the priority of the physical uplink channel carrying confirmation information and carrying the first message The priority of the sidelink channel, determining that no acknowledgment information is sent to the network device at the first moment, includes: the priority of the physical uplink control channel carrying the acknowledgment information at the first moment is lower than that mapped by the sidelink shared channel In the case of the priority of the physical sidelink shared channel PSSCH, the first terminal determines that no acknowledgment information is sent to the network device at the first moment.

In combination with the first aspect to the tenth possible implementation of the first aspect, in the eleventh possible implementation of the first aspect, the sidelink logical channel with the highest priority in the SL MAC PDU corresponding to the confirmation information The priority of the SL MAC PDU transmitted on the SL-SCH is lower than the priority of the sidelink logical channel with the highest priority. The first terminal determines that the priority of the physical uplink control channel carrying the confirmation information is lower than that of the SL MAC PDU. The priority of the PSSCH to which the SL-SCH of the PDU is mapped.

In combination with the first aspect to the eleventh possible implementation of the first aspect, in the twelfth possible implementation of the first aspect, the physical uplink channel is a physical uplink shared channel PUSCH, and the first message is a sidelink SL media access control MAC protocol data unit PDU, and the side link channel carrying the first message is the side link shared channel SL-SCH. According to the priority of the uplink channel carrying the acknowledgment information and the priority of the sidelink channel carrying the first message, the first terminal does not send the acknowledgment information to the network device at the first moment, including: if the PUSCH The priority of the SL-SCH is lower than that of the SL-SCH, and the first terminal determines that no confirmation information is sent to the network device at the first moment.

In combination with the first aspect to the twelfth possible implementation of the first aspect, in the thirteenth possible implementation of the first aspect, if the uplink with the highest priority among the MAC PDUs transmitted on the PUSCH If the priority of the side link logical channel is lower than that of the highest priority side link logical channel in the MAC PDU transmitted on the SL-SCH, the first terminal determines that the priority of the PUSCH is lower than that of the SL-SCH.

In combination with the first aspect to the thirteenth possible implementation of the first aspect, in the fourteenth possible implementation of the first aspect, if the sidelink with the highest priority in the SL MAC PDU corresponding to the confirmation information The priority of the logical channel, and the priority of the highest priority uplink logical channel in the MAC PDU transmitted on the PUSCH is lower than that of the highest priority sidelink logical channel in the MAC PDU transmitted on the SL-SCH priority, the first terminal determines that the priority of the PUSCH is lower than the priority of the SL-SCH.

Combining the first aspect to the fourteenth possible implementation manner of the first aspect, in the fifteenth possible implementation manner of the first aspect, the method provided in the embodiment of the present application further includes: If the priority of the channel is higher than the priority of the first message, or the priority of the physical uplink channel carrying the acknowledgment information is higher than the priority of the sidelink channel carrying the first message, the first terminal determines that the Send confirmation information to network devices at all times.

In the second aspect, the embodiment of the present application provides a method for processing sidelink resources, including: the first terminal determines that the confirmation information of the first sidelink hybrid automatic repeat request HARQ process is not sent to the network device at the first moment . The confirmation information is used to indicate whether the second terminal correctly receives the first data packet of the first sidelink HARQ process sent by the first terminal to the second terminal on the first sidelink resource. In a case where the acknowledgment information indicates that the second terminal has not correctly received the first data packet, the first terminal determines a third sidelink resource for retransmitting the first data packet. The first terminal sends the first data packet to the second terminal through the third side link resource.

An embodiment of the present application provides a method for processing sidelink resources. In this method, the first terminal may determine that no acknowledgment information has been sent to the network device at the first moment, and the acknowledgment information indicates that the second terminal has not correctly received the first In the case of a data packet, the first terminal determines a third sidelink resource for retransmitting the first data packet. The first data packet is then sent to the second terminal on the third sidelink resource. This improves the reliability of sidelink transmissions.

With reference to the second aspect, in a first possible implementation of the second aspect, in a possible implementation, the first terminal determines a third sidelink resource for retransmitting the first data packet, including : The first terminal receives the second sidelink resource from the network device, where the second sidelink resource is associated with the first sidelink HARQ process. The first terminal determines that the second sidelink resource is the third sidelink resource. Correspondingly, the first terminal sending the first data packet to the second terminal through the third side link resource includes: the first terminal sending the first data packet to the second terminal on the second side link resource.

With reference to the second aspect or the first possible implementation of the second aspect, in the second possible implementation of the second aspect, the first terminal determines a third sidelink for retransmitting the first data packet The resource includes: the first terminal determines the first side link resource as the third side link resource. Correspondingly, the first terminal sending the first data packet to the second terminal through the third side link resource includes: the first terminal sending the first data packet to the second terminal through the first side link resource. In this way, it is convenient for the first terminal to retransmit the first data packet by utilizing the first side link resource that previously sent the first data packet.

In combination with the second aspect to the second possible implementation of the second aspect, in a third possible implementation of the second aspect, the first terminal sends the first data to the second terminal through the third sidelink resource The packet includes: the first terminal sends the first data packet to the second terminal using the first side link resource at a second moment, and the second moment is obtained from the first moment and a preset offset value.

Combining the second aspect to the third possible implementation manner of the second aspect, in the fourth possible implementation manner of the second aspect, the method provided in the embodiment of the present application further includes: the first terminal receives an instruction from the network device Information, where the indication information is used to instruct the first terminal to determine the third side link resource by using the first method or the second method. Wherein, the first manner is: the first terminal determines the second sidelink resource reallocated by the network device to the first terminal as the third sidelink resource. The second way is: the first terminal determines the first side link resource as the third side link resource.

Wherein, in the second aspect, the manner in which the first terminal determines that no acknowledgment information is sent to the network device at the first moment may refer to the relevant description in the first aspect, which will not be repeated here.

In a third aspect, the present application provides a communication device, which can implement the method in the first aspect or any possible implementation of the first aspect, and therefore can also implement the first aspect or any possible implementation of the first aspect beneficial effects in. The communication device may be the first terminal, or a device that can support the first terminal to implement the method in the first aspect or any possible implementation manner of the first aspect, for example, a chip applied to the first terminal. The device may implement the above method through software, hardware, or through hardware executing corresponding software.

In an example, the communication device includes: a communication unit, configured to send and receive information. A processing unit, configured to determine that the communication unit has not performed the action of sending the confirmation information of the first sidelink HARQ process to the network device at the first moment. The confirmation information is used to indicate whether the second terminal correctly receives the first data packet of the first sidelink HARQ process sent by the communication device to the second terminal on the first sidelink resource. The processing unit is further configured to determine the second sidelink resource. If the confirmation information indicates that the second terminal correctly receives the first data packet, the processing unit is further configured to process the second side link resource according to the HARQ parameter of the second side link resource. Wherein, the HARQ parameter of the second side link resource includes a new data indication.

With reference to the third aspect, in a first possible implementation manner of the third aspect, the processing unit is configured to process the second sidelink resource according to the HARQ parameter of the second sidelink resource: The HARQ parameters of the two side link resources, and the second data packet is transmitted on the second side link resource.

With reference to the third aspect or the first possible implementation of the third aspect, in a second possible implementation of the third aspect, the processing unit is configured to process the first The two side link resources are: used to ignore the second side link resource according to the HARQ parameters of the second side link resource.

Combining the third aspect to the second possible implementation of the third aspect, in the third possible implementation of the third aspect, the HARQ parameter further includes a HARQ process number, and the first sidelink HARQ process is associated with the first variable, the value of the first variable is the value of the first parameter or the value of the second parameter. Wherein, the first parameter value indicates that the second terminal correctly receives the first data packet, and the second parameter value indicates that the second terminal does not correctly receive the first data packet. The processing unit is configured to ignore the second side link resource according to the HARQ parameters of the second side link resource: it is used to indicate retransmission at NDI, and the HARQ process number is the process of the first side link HARQ process number, and the value of the first variable is the value of the first parameter, the second sidelink resource is ignored.

Combining the third aspect to the third possible implementation of the third aspect, in the fourth possible implementation of the third aspect, it is used to indicate retransmission on the NDI, and the HARQ process number is the first sidelink The process number of the HARQ process, and when the HARQ cache of the first sidelink HARQ process is empty, the processing unit is specifically configured to ignore the second sidelink resource.

With reference to the fourth possible implementation manner of the third aspect, in a fifth possible implementation manner of the third aspect, the processing unit is further configured to determine that the first data packet has been successfully received by the second terminal, Clear the HARQ buffer of the first sidelink HARQ process.

With reference to the fifth possible implementation manner of the third aspect, in a sixth possible implementation manner of the third aspect, the processing unit is configured to, according to the HARQ parameter of the second sidelink resource, in the The transmission of the second data packet on the two side uplink resources is: used to indicate new transmission on the NDI, and the HARQ process number is the process number of the first sidelink HARQ process, and the value of the first variable is the first parameter value In the case of , the second data packet is transmitted on the second sidelink resource.

With reference to the third aspect to the seventh possible implementation manner of the third aspect, in an eighth possible implementation manner of the third aspect, the processing unit is configured to, according to the HARQ parameter of the second sidelink resource, in the The transmission of the second data packet on the two side link resources is used to transmit the second data packet on the second side link resource when the NDI indicates new transmission.

With reference to the third aspect to the eighth possible implementation manner of the third aspect, in a ninth possible implementation manner of the third aspect, the processing unit is configured to determine that the communication unit does not perform sending to the network device at the first moment. The action of confirming the information is specifically: it is used to determine that the time of sending the confirmation information and the time of sending the first message by the first terminal are both the first time. In the case where the priority of the physical uplink channel carrying the acknowledgment information is lower than the priority of the first message, or the priority of the physical uplink channel carrying the acknowledgment information is lower than the priority of the sidelink channel carrying the first message, It is determined that the communication unit does not perform the action of sending confirmation information to the network device at the first moment.

With reference to the third aspect to the ninth possible implementation manner of the third aspect, in the tenth possible implementation manner of the third aspect, the first message is a message sent by the communication unit to the network device during the random access process .

In combination with the third aspect to the tenth possible implementation of the third aspect, in the eleventh possible implementation of the third aspect, the physical uplink channel is a physical uplink control channel, and the first message is a sidelink SL Medium access control MAC protocol data unit PDU, the side link channel carrying the first message is the side link shared channel SL-SCH, and the processing unit is used to carry the confirmation information according to the priority of the physical uplink channel and the carrying The priority of the sidelink channel of the first message, it is determined that the communication unit does not send confirmation information to the network device at the first moment is: the priority of the physical uplink control channel used to carry the confirmation information at the first moment is lower than that of the sidelink In the case of the priority of the physical sidelink shared channel PSSCH mapped to the link shared channel, it is determined that the communication unit does not send confirmation information to the network device at the first moment.

Combining the third aspect to the eleventh possible implementation of the third aspect, in the twelfth possible implementation of the third aspect, the sidelink logic with the highest priority in the SL MAC PDU corresponding to the confirmation information The priority of the channel is lower than the priority of the highest priority side link logical channel in the SL MAC PDU transmitted on the SL-SCH. The processing unit is used to determine the priority of the physical uplink control channel carrying the confirmation information. The priority of the PSSCH to which the SL-SCH carrying the SL MAC PDU is mapped.

Combining the third aspect to the twelfth possible implementation of the third aspect, in the thirteenth possible implementation of the third aspect, the physical uplink channel is the physical uplink shared channel PUSCH, and the first message is the sidelink SL media access control MAC protocol data unit PDU, and the side link channel carrying the first message is the side link shared channel SL-SCH. The processing unit is configured to determine, according to the priority of the uplink channel carrying the acknowledgment information and the priority of the sidelink channel carrying the first message, that the communication unit does not send the acknowledgment information to the network device at the first moment, if the PUSCH The priority is lower than that of the SL-SCH, and it is determined that the communication unit does not send confirmation information to the network device at the first moment.

In combination with the third aspect to the thirteenth possible implementation of the third aspect, in the fourteenth possible implementation of the third aspect, if the uplink with the highest priority among the MAC PDUs transmitted on the PUSCH If the priority of the side link logical channel is lower than the priority of the highest priority side link logical channel in the MAC PDU transmitted on the SL-SCH, the processing unit is used to determine that the priority of the PUSCH is lower than the priority of the SL-SCH class.

Combining the third aspect to the fourteenth possible implementation of the third aspect, in the fifteenth possible implementation of the third aspect, if the sidelink with the highest priority in the SL MAC PDU corresponding to the confirmation information The priority of the logical channel, and the priority of the highest priority uplink logical channel in the MAC PDU transmitted on the PUSCH is lower than that of the highest priority sidelink logical channel in the MAC PDU transmitted on the SL-SCH priority, the processing unit is configured to determine that the priority of the PUSCH is lower than the priority of the SL-SCH.

With reference to the fifteenth possible implementation of the third aspect to the third aspect, in the sixteenth possible implementation of the third aspect, the processing unit is further configured to set the priority of the physical uplink channel carrying the confirmation information higher than the priority of the first message, or the priority of the physical uplink channel carrying the acknowledgment information is higher than that of the sidelink channel carrying the first message, the communication unit sends the message to the network device at the first moment Confirm the information.

In another example, an embodiment of the present application provides a communication device, and the communication device may be a first terminal, or may be a chip in the first terminal. When the communication device is the first terminal, the communication unit may be a transceiver or include one or more modules capable of sending and receiving information, and the processing unit may be a processor or include one or more modules with processing capabilities. The communication device may also include a storage unit. The storage unit may be a memory. The storage unit is used for storing computer program codes, and the computer program codes include instructions. The processing unit executes the instruction stored in the storage unit, so that the first terminal implements a method for processing sidelink resources described in the first aspect or any possible implementation manner of the first aspect. When the communication device is a chip in the first terminal, the processing unit may be a processor, and the communication unit may be collectively referred to as: a communication interface. For example, the communication interface may be an input/output interface, a pin or a circuit, and the like. The processing unit executes the computer program code stored in the storage unit, so that the first terminal implements a method for processing sidelink resources described in the first aspect or any possible implementation manner of the first aspect, the The storage unit may be a storage unit in the chip (for example, a register, a cache, etc.), or a storage unit in the first terminal outside the chip (for example, a read-only memory, a random access memory, etc.).

Optionally, the processor, communication interface/transceiver and memory are coupled to each other.

In a fourth aspect, the present application provides a communication device, which can implement the method in the first aspect or any possible implementation of the first aspect, and therefore can also implement the second aspect or any possible implementation of the second aspect beneficial effects in. The communication device may be the first terminal, or a device that can support the first terminal to implement the method in the first aspect or any possible implementation manner of the first aspect, for example, a chip applied to the first terminal. The device may implement the above method through software, hardware, or through hardware executing corresponding software.

In an example, the communication device includes: a processing unit, configured to determine that the confirmation information of the first sidelink hybrid automatic repeat request (HARQ) process is not sent to the network device at the first moment. The confirmation information is used to indicate whether the second terminal correctly receives the first data packet of the first sidelink HARQ process sent by the first terminal to the second terminal on the first sidelink resource. In a case where the confirmation information indicates that the second terminal has not correctly received the first data packet, the processing unit is further configured to determine a third sidelink resource for retransmitting the first data packet. A communication unit, configured to send the first data packet to the second terminal through the third sidelink resource.

With reference to the fourth aspect, in a first possible implementation manner of the fourth aspect, the communication unit is further configured to receive a second sidelink resource from a network device, where the second sidelink resource is the same as the first Sidelink HARQ process association. The processing unit is further configured to determine the third side link resource used for retransmitting the first data packet is: used to determine that the second side link resource is the third side link resource. Correspondingly, the communication unit, configured to send the first data packet to the second terminal through the third side link resource is: configured to send the first data packet to the second terminal on the second side link resource.

With reference to the fourth aspect or the first possible implementation of the fourth aspect, in a second possible implementation of the fourth aspect, the processing unit is further configured to determine the third side for retransmitting the first data packet The uplink resource is: determining the first sidelink resource as the third sidelink resource. Correspondingly, the communication unit, configured to send the first data packet to the second terminal through the third side link resource is: configured to send the first data packet to the second terminal through the first side link resource.

With reference to the fourth aspect to the second possible implementation manner of the fourth aspect, in a third possible implementation manner of the fourth aspect, the communication unit is configured to send the second A data packet is used for sending the first data packet to the second terminal by using the first side link resource at a second time, where the second time is obtained from the first time and a preset offset value.

With reference to the fourth aspect to the third possible implementation manner of the fourth aspect, in a fourth possible implementation manner of the fourth aspect, the communication unit is further configured to receive indication information from the network device, and the indication information is used for Instructing the first terminal to determine the third sidelink resource by using the first method or the second method. Wherein, the first manner is: the first terminal determines the second sidelink resource reallocated by the network device to the first terminal as the third sidelink resource. The second way is: the first terminal determines the first side link resource as the third side link resource. Or the first terminal autonomously selects the third side link resource from the preconfigured side link resource pool.

Wherein, in the fourth aspect, the manner in which the processing unit determines that the apparatus has not sent confirmation information to the network device at the first moment may refer to the relevant description in the third aspect, and details are not repeated here.

In another example, an embodiment of the present application provides a communication device, and the communication device may be a first terminal, or may be a chip in the first terminal. When the communication device is the first terminal, the communication unit may be a transceiver. The processing unit may be a processor. The communication device may also include a storage unit. The storage unit may be a memory. The storage unit is used for storing computer program codes, and the computer program codes include instructions. The processing unit executes the instruction stored in the storage unit, so that the first terminal implements a method for processing sidelink resources described in the second aspect or any possible implementation manner of the second aspect. When the communication device is a chip in the first terminal, the processing unit may be a processor, and the communication unit may be collectively referred to as: a communication interface. For example, the communication interface may be an input/output interface, a pin or a circuit, and the like. The processing unit executes the computer program code stored in the storage unit, so that the first terminal implements a method for processing sidelink resources described in the second aspect or any possible implementation manner of the second aspect, the The storage unit may be a storage unit in the chip (for example, a register, a cache, etc.), or a storage unit in the first terminal outside the chip (for example, a read-only memory, a random access memory, etc.).

Optionally, the processor, communication interface/transceiver and memory are coupled to each other.

In a fifth aspect, the embodiment of the present application provides a method for processing sidelink resources, including: a first terminal sends confirmation information of a first sidelink HARQ process to a network device at a first moment. The confirmation information is used to indicate that the second terminal correctly receives the first data packet of the first sidelink HARQ process sent by the first terminal to the second terminal on the first sidelink resource. If the first terminal receives the second sidelink resource from the network device again. If the confirmation information indicates that the second terminal correctly receives the first data packet, the first terminal processes the second side link resource according to the HARQ parameter of the second side link resource. Wherein, the HARQ parameter of the second side link resource includes a new data indication NDI.

The solution in the fifth aspect is applicable to the situation that the first terminal sends the confirmation information of the first sidelink HARQ process to the network equipment, but the network equipment does not receive the confirmation information.

With reference to the fifth aspect, in a first possible implementation manner of the fifth aspect, the first terminal processes the second sidelink resource according to the HARQ parameter of the second sidelink resource, including: the first terminal processes the second sidelink resource according to the first The HARQ parameters of the two side link resources, and the second data packet is transmitted on the second side link resource.

With reference to the fifth aspect or the first possible implementation of the fifth aspect, in the second possible implementation of the fifth aspect, the first terminal processes the second-side The uplink resource includes: the first terminal ignores the second sidelink resource according to the HARQ parameter of the second sidelink resource.

Combining the fifth aspect to the second possible implementation of the fifth aspect, in the third possible implementation of the fifth aspect, the HARQ parameter further includes the HARQ process number, and the method provided in this embodiment of the present application further includes: A downlink HARQ process is associated with a first variable, and a value of the first variable is a first parameter value or a second parameter value. Wherein, the first parameter value indicates that the second terminal correctly receives the first data packet, and the second parameter value indicates that the second terminal does not correctly receive the first data packet. The first terminal ignores the second side link resource according to the HARQ parameters of the second side link resource, including: indicating retransmission in the NDI, and the HARQ process number is the process number of the first side link HARQ process, and When the value of the first variable is the value of the first parameter, the first terminal ignores the second side link resource.

Combining the fifth aspect to the third possible implementation of the fifth aspect, in the fourth possible implementation of the fifth aspect, the first terminal ignores the second-side Uplink resources, including: when the NDI indicates retransmission, and the HARQ process number is the process number of the first sidelink HARQ process, and the HARQ cache of the first sidelink HARQ process is empty, the first The terminal ignores the second sidelink resource.

Combining the fifth aspect to the fourth possible implementation manner of the fifth aspect, in the fifth possible implementation manner of the fifth aspect, the method provided in this embodiment of the present application further includes: the first terminal determines that the first data packet has been After being successfully received by the second terminal, the first terminal clears the HARQ buffer of the first sidelink HARQ process.

In combination with the fifth aspect to the fifth possible implementation of the fifth aspect, in the sixth possible implementation of the fifth aspect, according to the HARQ parameter of the second side uplink resource, the first terminal The transmission of the second data packet on the uplink resource includes: when the NDI indicates new transmission, and the HARQ process number is the process number of the first sidelink HARQ process, and the value of the first variable is the first parameter value , the first terminal transmits the second data packet on the second sidelink resource.

With reference to the fifth aspect to the sixth possible implementation of the fifth aspect, in the seventh possible implementation of the fifth aspect, according to the HARQ parameter of the second side uplink resource, the first terminal, on the second side The transmitting the second data packet on the uplink resource includes: under the condition that the NDI indicates new transmission, the first terminal transmits the second data packet on the second side link resource.

Combining the fifth aspect to the seventh possible implementation of the fifth aspect, in the eighth possible implementation of the fifth aspect, the first terminal has sent confirmation information to the network device at the first moment, including: first The time when the terminal determines to send the confirmation information and the time when the first terminal sends the first message are both the first time. In the case where the priority of the physical uplink channel carrying the acknowledgment information is higher than the priority of the first message, or the priority of the physical uplink channel carrying the acknowledgment information is higher than the priority of the sidelink channel carrying the first message, The first terminal determines that confirmation information has been sent to the network device at the first moment. Since the time of sending the confirmation information is the same as the time when the first terminal sends the first message, the time of sending the confirmation information conflicts with the time when the first terminal sends the first message, and the priority of the physical uplink channel carrying the confirmation information is higher than that of the first terminal. The priority of a message or the priority of the sidelink channel carrying the first message, so the first terminal may give priority to sending confirmation information to the network device at the first moment.

With reference to the fifth aspect to the seventh possible implementation of the fifth aspect, in the eighth possible implementation of the fifth aspect, the first message is a message sent by the first terminal to the network device during the random access process .

Combining the fifth aspect to the eighth possible implementation of the fifth aspect, in the ninth possible implementation of the fifth aspect, the physical uplink channel is a physical uplink control channel, and the first message is a sidelink SL medium The access control MAC protocol data unit PDU, the side link channel carrying the first message is the side link shared channel SL-SCH, and the first terminal according to the priority of the physical uplink channel carrying confirmation information and carrying the first message The priority of the sidelink channel, the confirmation information has been sent to the network device at the first moment, including: the priority of the physical uplink control channel carrying the confirmation information at the first moment is higher than that mapped by the sidelink shared channel In the case of the priority of the physical sidelink shared channel PSSCH, the first terminal has sent confirmation information to the network device at the first moment.

In combination with the fifth aspect to the ninth possible implementation of the fifth aspect, in the tenth possible implementation of the fifth aspect, the acknowledgment information corresponds to the SL MAC PDU of the highest priority side link logical channel The priority is higher than the priority of the sidelink logical channel with the highest priority among the SL MAC PDUs transmitted on the SL-SCH, and the first terminal determines that the priority of the physical uplink control channel carrying the confirmation information is higher than that of the SL MAC PDU carrying the SL MAC PDU The priority of the PSSCH mapped to the SL-SCH.

With reference to the fifth aspect to the tenth possible implementation of the fifth aspect, in the eleventh possible implementation of the fifth aspect, the physical uplink channel is the physical uplink shared channel PUSCH, and the first message is the sidelink The SL media access control MAC protocol data unit PDU, the side link channel carrying the first message is the side link shared channel SL-SCH. The first terminal sends confirmation information to the network device at the first moment according to the priority of the uplink channel carrying the confirmation information and the priority of the sidelink channel carrying the first message, including: if the priority of the PUSCH is higher than that of the SL - the priority of the SCH, the first terminal sends confirmation information to the network device at the first moment.

With reference to the fifth aspect to the eleventh possible implementation of the fifth aspect, in the twelfth possible implementation of the fifth aspect, if the uplink with the highest priority among the MAC PDUs transmitted on the PUSCH If the priority of the side link logical channel is higher than that of the highest priority side link logical channel in the MAC PDU transmitted on the SL-SCH, then the first terminal determines that the priority of the PUSCH is higher than that of the SL-SCH.

In combination with the fifth aspect to the twelfth possible implementation of the fifth aspect, in the thirteenth possible implementation of the fifth aspect, if the sidelink with the highest priority in the SL MAC PDU corresponding to the confirmation information The priority of the logical channel, and the priority of the highest priority uplink logical channel in the MAC PDU transmitted on the PUSCH is higher than that of the highest priority sidelink logical channel in the MAC PDU transmitted on the SL-SCH priority, the first terminal determines that the priority of the PUSCH is higher than the priority of the SL-SCH.

In combination with the fifth aspect to the thirteenth possible implementation manner of the fifth aspect, in the fourteenth possible implementation manner of the fifth aspect, the method provided in the embodiment of the present application further includes: If the priority of the channel is lower than the priority of the first message, or the priority of the physical uplink channel carrying the acknowledgment information is lower than the priority of the sidelink channel carrying the first message, the first terminal determines that the first The first message is sent to the network device at all times.

In a sixth aspect, the embodiment of the present application provides a method for processing sidelink resources, including: a first terminal sends confirmation information of a first sidelink HARQ process to a network device at a first moment. The confirmation information is used to indicate that the second terminal has not correctly received the first data packet of the first sidelink HARQ process sent by the first terminal to the second terminal on the first sidelink resource. If the first terminal does not receive the second side link resource from the network device, the first terminal determines to determine the first side link resource as the side link resource for retransmitting the first data packet. The first terminal resends the first data packet to the second terminal through the first side link resource.

An embodiment of the present application provides a method for processing sidelink resources. In this method, the first terminal may send confirmation information to the network device at the first moment after determining that the second terminal has not correctly received the first resource. data pack. However, if the first terminal does not receive the second side link resource from the network device, it may indicate that the network device has not received the confirmation information indicating that the second terminal has not correctly received the first data packet, therefore, the first terminal can use The first sidelink resource retransmits the first data packet. This ensures the reliability of sidelink transmissions.

With reference to the sixth aspect, in a first possible implementation manner of the sixth aspect, the first terminal resends the first data packet to the second terminal through the first side link resource, including: the first terminal at the second moment The first data packet is resent to the second terminal by using the first side link resource, and the second time is obtained from the first time and a preset offset value.

In the sixth aspect, for the specific process of the first terminal sending the confirmation information of the first sidelink HARQ process to the network device at the first moment, reference may be made to the description in the fifth aspect, which will not be repeated here.

In a seventh aspect, the present application provides a communication device, which can implement the method in the fifth aspect or any possible implementation of the fifth aspect, and therefore can also implement the fifth aspect or any possible implementation of the fifth aspect beneficial effects in. The communication device may be the first terminal, or a device that can support the first terminal to implement the fifth aspect or the method in any possible implementation manner of the fifth aspect, for example, a chip applied to the first terminal. The device may implement the above method through software, hardware, or through hardware executing corresponding software.

In an example, the communication device includes: a processing unit, configured to determine that at a first moment, the communication unit of the communication device sends confirmation information of a first sidelink hybrid automatic repeat request (HARQ) process to the network device. The confirmation information is used to indicate that the second terminal correctly receives the first data packet of the first sidelink HARQ process sent by the communication unit to the second terminal on the first sidelink resource. The processing unit is configured to, when the communication unit receives the second side link resource from the network device, and if the confirmation information indicates that the second terminal correctly receives the first data packet, according to the HARQ of the second side link resource parameter, handles the second sidelink resource. Wherein, the HARQ parameters of the second side link resource include a new data indication NDI and a HARQ process number.

The solution of the seventh aspect is applicable to the situation that the communication unit of the communication device sends the confirmation information of the first sidelink HARQ process to the network equipment, but the network equipment does not receive the confirmation information.

With reference to the seventh aspect, in a first possible implementation manner of the seventh aspect, the processing unit is configured to process the second sidelink resource according to the HARQ parameter of the second sidelink resource, and is: used to process the second sidelink resource according to HARQ parameters of the second side link resource, on which the second data packet is transmitted.

With reference to the seventh aspect or the first possible implementation manner of the seventh aspect, in a second possible implementation manner of the seventh aspect, the processing unit is configured to process the first The two side link resources are: used to ignore the second side link resource according to the HARQ parameters of the second side link resource.

In combination with the seventh aspect to the second possible implementation of the seventh aspect, in the third possible implementation of the seventh aspect, the HARQ parameter further includes a HARQ process number, and the first sidelink HARQ process is associated with the first variable, the value of the first variable is the value of the first parameter or the value of the second parameter. Wherein, the first parameter value indicates that the second terminal correctly receives the first data packet, and the second parameter value indicates that the second terminal does not correctly receive the first data packet. A processing unit, configured to ignore the second sidelink when the NDI indicates retransmission, and the HARQ process number is the process number of the first sidelink HARQ process, and the value of the first variable is the first parameter value resource.

With reference to the seventh aspect to the third possible implementation manner of the seventh aspect, in a fourth possible implementation manner of the seventh aspect, the processing unit is configured to ignore the first The two side uplink resources are: used when NDI indicates retransmission, and the HARQ process number is the process number of the first sidelink HARQ process, and the HARQ buffer of the first sidelink HARQ process is empty , ignoring the second sidelink resource.

With reference to the seventh aspect to the fourth possible implementation manner of the seventh aspect, in a fifth possible implementation manner of the seventh aspect, the processing unit is further configured to determine that the first data packet has been successfully received by the second terminal, Clear the HARQ buffer of the first sidelink HARQ process.

With reference to the seventh aspect to the fifth possible implementation manner of the seventh aspect, in a sixth possible implementation manner of the seventh aspect, the processing unit is configured to, according to the HARQ parameter of the second sidelink resource, in the The transmission of the second data packet on the two side uplink resources is: used to indicate new transmission on the NDI, and the HARQ process number is the process number of the first sidelink HARQ process, and the value of the first variable is the first parameter value In the case of , the second data packet is transmitted on the second sidelink resource.

With reference to the seventh aspect to the sixth possible implementation manner of the seventh aspect, in the seventh possible implementation manner of the seventh aspect, the communication unit is configured to, according to the HARQ parameter of the second sidelink resource, in the The transmission of the second data packet on the two side link resources is used to transmit the second data packet on the second side link resource when the NDI indicates new transmission.

In combination with the seventh aspect to the seventh possible implementation manner of the seventh aspect, in an eighth possible implementation manner of the seventh aspect, the processing unit is configured to determine the time when the confirmation information is sent and the time when the device sends the first message All moments are the first moments. In the case where the priority of the physical uplink channel carrying the acknowledgment information is higher than the priority of the first message, or the priority of the physical uplink channel carrying the acknowledgment information is higher than the priority of the sidelink channel carrying the first message, The processing unit is further configured to determine that the device sends confirmation information to the network device at the first moment.

With reference to the seventh aspect to the eighth possible implementation manner of the seventh aspect, in a ninth possible implementation manner of the seventh aspect, the first message is a message sent by the apparatus to the network device during a random access process.

In combination with the seventh aspect to the ninth possible implementation of the seventh aspect, in the tenth possible implementation of the seventh aspect, the physical uplink channel is a physical uplink control channel, and the first message is a sidelink SL medium The access control MAC protocol data unit PDU, the side link channel carrying the first message is the side link shared channel SL-SCH, and the processing unit is used to carry the confirmation information according to the priority of the physical uplink channel and the carrying the second message. The priority of the sidelink channel of a message is determined to be that the device sends confirmation information to the network equipment at the first moment, and the priority of the physical uplink control channel used to carry the confirmation information at the first moment is higher than that of the sidelink In the case of the priority of the physical sidelink shared channel PSSCH mapped to the shared channel, it is determined that the apparatus sends confirmation information to the network device at the first moment.

In combination with the seventh aspect to the tenth possible implementation of the seventh aspect, in the eleventh possible implementation of the seventh aspect, the sidelink logical channel with the highest priority in the SL MAC PDU corresponding to the confirmation information The priority is higher than the priority of the highest priority side link logical channel in the SL MAC PDU transmitted on the SL-SCH. The processing unit is used to determine that the priority of the physical uplink control channel carrying the confirmation information is higher than that of the carrying acknowledgment information. The priority of the PSSCH to which the SL-SCH of the SL MAC PDU is mapped.

In combination with the seventh aspect to the eleventh possible implementation of the seventh aspect, in the twelfth possible implementation of the seventh aspect, the physical uplink channel is the physical uplink shared channel PUSCH, and the first message is the sidelink SL media access control MAC protocol data unit PDU, and the side link channel carrying the first message is the side link shared channel SL-SCH. A processing unit, configured to determine that the device sends confirmation information to the network device at the first moment according to the priority of the uplink channel carrying the confirmation information and the priority of the sidelink channel carrying the first message, specifically: if the PUSCH The priority of SL-SCH is higher than that of SL-SCH, and is used to determine that the device sends confirmation information to the network equipment at the first moment.

In combination with the seventh aspect to the twelfth possible implementation of the seventh aspect, in the thirteenth possible implementation of the seventh aspect, if the uplink with the highest priority among the MAC PDUs transmitted on the PUSCH If the priority of the logical channel is higher than that of the highest priority side link logical channel in the MAC PDU transmitted on the SL-SCH, the processing unit is used to determine that the priority of the PUSCH is higher than that of the SL-SCH class.

In combination with the seventh aspect to the thirteenth possible implementation of the seventh aspect, in the fourteenth possible implementation of the seventh aspect, if the sidelink with the highest priority in the SL MAC PDU corresponding to the confirmation information The priority of the logical channel, and the priority of the highest priority uplink logical channel in the MAC PDU transmitted on the PUSCH is higher than that of the highest priority sidelink logical channel in the MAC PDU transmitted on the SL-SCH priority, the processing unit is configured to determine that the priority of the PUSCH is higher than the priority of the SL-SCH.

With reference to the fourteenth possible implementation of the seventh aspect to the seventh aspect, in the fifteenth possible implementation of the seventh aspect, the priority of the physical uplink channel carrying the confirmation information is lower than that of the first message. priority, or when the priority of the physical uplink channel carrying the acknowledgment information is lower than the priority of the sidelink channel carrying the first message, the communication unit is configured to determine to send the first message to the network device at the first moment .

In another example, an embodiment of the present application provides a communication device, and the communication device may be a first terminal, or may be a chip in the first terminal. When the communication device is the first terminal, the communication unit may be a transceiver. The processing unit may be a processor. The communication device may also include a storage unit. The storage unit may be a memory. The storage unit is used for storing computer program codes, and the computer program codes include instructions. The processing unit executes the instruction stored in the storage unit, so that the first terminal implements a method for processing sidelink resources described in the fifth aspect or any possible implementation manner of the fifth aspect. When the communication device is a chip in the first terminal, the processing unit may be a processor, and the communication unit may be collectively referred to as: a communication interface. For example, the communication interface may be an input/output interface, a pin or a circuit, and the like. The processing unit executes the computer program code stored in the storage unit, so that the first terminal implements the fifth aspect or a method for processing sidelink resources described in any possible implementation manner of the fifth aspect, the The storage unit may be a storage unit in the chip (for example, a register, a cache, etc.), or a storage unit in the first terminal outside the chip (for example, a read-only memory, a random access memory, etc.).

Optionally, the processor, communication interface/transceiver and memory are coupled to each other.

In an eighth aspect, the present application provides a communication device, which can implement the method in the sixth aspect or any possible implementation of the sixth aspect, and therefore can also implement the sixth aspect or any possible implementation of the sixth aspect beneficial effects in. The communication device may be the first terminal, or a device that can support the first terminal to implement the sixth aspect or the method in any possible implementation manner of the sixth aspect, for example, a chip applied to the first terminal. The device may implement the above method through software, hardware, or through hardware executing corresponding software.

In an example, the communication device includes: a communication unit, configured to send and receive information. A processing unit, configured to determine that the communication unit sends the confirmation information of the first sidelink HARQ process to the network device at the first moment. The confirmation information is used to indicate that the second terminal has not correctly received the first data packet of the first sidelink HARQ process sent by the first terminal to the second terminal on the first sidelink resource. If the processing unit determines that the communication unit has not received the second side link resource from the network device, then determine the first side link resource as a side link resource for retransmitting the first data packet. A communication unit, configured to send the first data packet to the second terminal through the first side link resource.

In a possible implementation manner, the communication unit is configured to send the first data packet to the second terminal through the sidelink resource, specifically: the communication unit is configured to use the first sidelink resource at the second moment The first data packet is sent to the second terminal, and the second time is obtained from the first time and a preset offset value.

In the eighth aspect, the specific process for the processing unit to determine that the apparatus sends the acknowledgment information of the first sidelink HARQ process to the network device at the first moment can refer to the description in the sixth aspect, and details are not repeated here.

In another example, an embodiment of the present application provides a communication device, and the communication device may be a first terminal, or may be a chip in the first terminal. When the communication device is the first terminal, the communication unit may be a transceiver. The processing unit may be a processor. The communication device may also include a storage unit. The storage unit may be a memory. The storage unit is used for storing computer program codes, and the computer program codes include instructions. The processing unit executes the instruction stored in the storage unit, so that the first terminal implements the method for processing sidelink resources described in the sixth aspect or any possible implementation manner of the sixth aspect. When the communication device is a chip in the first terminal, the processing unit may be a processor, and the communication unit may be collectively referred to as: a communication interface. For example, the communication interface may be an input/output interface, a pin or a circuit, and the like. The processing unit executes the computer program code stored in the storage unit, so that the first terminal implements the sixth aspect or a method for processing sidelink resources described in any possible implementation manner of the sixth aspect, the The storage unit may be a storage unit in the chip (for example, a register, a cache, etc.), or a storage unit in the first terminal outside the chip (for example, a read-only memory, a random access memory, etc.).

Optionally, the processor, communication interface/transceiver and memory are coupled to each other.

In the ninth aspect, the embodiment of the present application provides a computer-readable storage medium, in which a computer program or instruction is stored, and when the computer program or instruction is run on the computer, the computer executes the computer-readable storage medium as described in the first aspect to the second aspect. The method for processing sidelink resources described in any possible implementation manner of an aspect.

In the tenth aspect, the embodiment of the present application provides a computer-readable storage medium, in which a computer program or instruction is stored, and when the computer program or instruction is run on the computer, the computer is made to perform the following aspects from the second aspect to the first aspect. The method for processing sidelink resources described in any possible implementation manner of the two aspects.

In the eleventh aspect, the embodiment of the present application provides a computer-readable storage medium, in which a computer program or instruction is stored, and when the computer program or instruction is run on the computer, the computer executes the following aspects of the fifth aspect to the following: The method for processing sidelink resources described in any possible implementation manner of the fifth aspect.

Twelfth, the embodiment of the present application provides a computer-readable storage medium, in which a computer program or instruction is stored, and when the computer program or instruction is run on the computer, the computer is made to execute the sixth aspect to the first aspect. The method for processing sidelink resources described in any possible implementation of the six aspects.

In the thirteenth aspect, the embodiment of the present application provides a computer program product including instructions, when the instructions are run on the computer, the computer executes a process described in the first aspect or various possible implementations of the first aspect Method for sidelink resources.

In a fourteenth aspect, the present application provides a computer program product including instructions, when the instructions are run on a computer, the computer is made to execute a processing sideline described in the second aspect or various possible implementations of the second aspect Method for linking resources.

In the fifteenth aspect, the embodiment of the present application provides a computer program product including instructions, and when the instructions are run on the computer, the computer executes the fifth aspect or a process described in various possible implementations of the fifth aspect Method for sidelink resources.

In the sixteenth aspect, the present application provides a computer program product including instructions, which, when the instructions are run on the computer, cause the computer to execute a processing sideline described in the sixth aspect or in various possible implementations of the sixth aspect Method for linking resources.

In a seventeenth aspect, an embodiment of the present application provides a communication system, where the communication system includes: one or more communication devices described in the third aspect, and a network device. Optionally, the communication system may further include: a second terminal.

In an eighteenth aspect, an embodiment of the present application provides a communication system, where the communication system includes: one or more communication devices described in the fourth aspect, and a network device. Optionally, the communication system may further include: a second terminal.

In a nineteenth aspect, an embodiment of the present application provides a communication system, where the communication system includes: one or more communication devices described in the seventh aspect, and a network device. Optionally, the communication system may further include: a second terminal.

In a twentieth aspect, an embodiment of the present application provides a communication system, where the communication system includes: one or more communication devices described in the eighth aspect, and a network device. Optionally, the communication system may further include: a second terminal.

In the twenty-first aspect, the embodiment of the present application provides a communication device, the communication device includes a processor and a storage medium, the storage medium stores instructions, and when the instructions are executed by the processor, the first aspect is implemented Or the method for processing sidelink resources described in various possible implementation manners of the first aspect.

In the twenty-second aspect, the embodiment of the present application provides a communication device, the communication device includes a processor and a storage medium, the storage medium stores instructions, and when the instructions are executed by the processor, the implementation of the second aspect Or the method for processing sidelink resources described in various possible implementation manners of the second aspect.

In the twenty-third aspect, the embodiment of the present application provides a communication device, the communication device includes a processor and a storage medium, the storage medium stores instructions, and when the instructions are executed by the processor, the fifth aspect is implemented Or the method for processing sidelink resources described in various possible implementation manners of the fifth aspect.

In the twenty-fourth aspect, the embodiment of the present application provides a communication device, the communication device includes a processor and a storage medium, the storage medium stores instructions, and when the instructions are executed by the processor, the sixth aspect is implemented Or the method for processing sidelink resources described in various possible implementation manners of the sixth aspect.

In the twenty-fifth aspect, the embodiment of the present application provides a communication device, the communication device includes one or more modules for implementing the methods of the first aspect, the second aspect, the fifth aspect, and the sixth aspect, the One or more modules may correspond to each step in the methods of the first aspect, the second aspect, the fifth aspect, and the sixth aspect.

In a twenty-sixth aspect, an embodiment of the present application provides a chip, the chip includes a processor and a communication interface, the communication interface is coupled to the processor, and the processor is used to run computer programs or instructions to implement the first aspect or the first aspect A method for processing sidelink resources described in various possible implementations. The communication interface is used for communicating with other modules outside the chip.

In a twenty-seventh aspect, an embodiment of the present application provides a chip, the chip includes a processor and a communication interface, the communication interface is coupled to the processor, and the processor is used to run computer programs or instructions to implement the second aspect or the second aspect A method for processing sidelink resources described in various possible implementations. The communication interface is used to communicate with other modules outside the chip.

In a twenty-eighth aspect, an embodiment of the present application provides a chip, the chip includes a processor and a communication interface, the communication interface is coupled to the processor, and the processor is used to run computer programs or instructions to implement the fifth aspect or the fifth aspect A method for processing sidelink resources described in various possible implementations. The communication interface is used for communicating with other modules outside the chip.

In a twenty-ninth aspect, an embodiment of the present application provides a chip, the chip includes a processor and a communication interface, the communication interface is coupled to the processor, and the processor is used to run computer programs or instructions to implement the sixth aspect or the sixth aspect A method for processing sidelink resources described in various possible implementations. The communication interface is used to communicate with other modules outside the chip.

Specifically, the chip provided in the embodiment of the present application further includes a memory for storing computer programs or instructions.

Any device or computer storage medium or computer program product or chip or communication system provided above is used to execute the corresponding method provided above. Therefore, the beneficial effects that it can achieve can refer to the corresponding method provided above. The beneficial effects of the corresponding solution in the method will not be repeated here.

Description of drawings

FIG. 1 is an architecture diagram of a communication system provided by an embodiment of the present application;

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

3a to 3d are schematic diagrams of feedback confirmation information between network devices and terminals;

FIG. 4-FIG. 9 are schematic flowcharts of a method for sending sidelink resources provided by an embodiment of the present application;

FIG. 10 is a schematic structural diagram of a communication device provided by an embodiment of the present application;

FIG. 11 is a schematic structural diagram of another communication device provided by an embodiment of the present application;

FIG. 12 is a schematic structural diagram of a chip provided by an embodiment of the present application.

Detailed ways

In order to clearly describe the technical solutions of the embodiments of the present application, in the embodiments of the present application, words such as "first" and "second" are used to distinguish the same or similar items with basically the same function and effect. For example, the first terminal and the first terminal are only used to distinguish different terminals, and their sequence is not limited. Those skilled in the art can understand that words such as "first" and "second" do not limit the number and execution order, and words such as "first" and "second" do not necessarily limit the difference.

It should be noted that, in this application, words such as "exemplary" or "for example" are used as examples, illustrations or illustrations. Any embodiment or design described herein as "exemplary" or "for example" is not to be construed as preferred or advantageous over other embodiments or designs. Rather, the use of words such as "exemplary" or "such as" is intended to present related concepts in a concrete manner.

In this application, "at least one" means one or more, and "multiple" means two or more. "And/or" describes the association relationship of associated objects, indicating that there may be three types of relationships, for example, A and/or B, which can mean: A exists alone, A and B exist simultaneously, and B exists alone, where A, B can be singular or plural. The character "/" generally indicates that the contextual objects are an "or" relationship. "At least one of the following" or similar expressions refer to any combination of these items, including any combination of single or plural items. For example, at least one item (piece) of a, b, or c can represent: a, b, c, a-b, a-c, b-c, or a-b-c, where a, b, c can be single or multiple .

The technical solution of the present application can be applied to various communication systems, for example: long-term evolution (long timeevolution, LTE) system, LTE frequency division duplex (frequency division duplex, FDD) system, LTE time division duplex (time division duplex, TDD) system, universal mobile telecommunications system (universal mobile telecommunications system, UMTS), global interconnection microwave access (worldwide interoperability for microwave access, WiMAX) communication system, public land mobile network (public land mobile network, PLMN) system, device to device (device to device) , D2D) network system or machine-to-machine (M2M) network system and future 5G communication system, etc.

The network architecture and business scenarios described in the embodiments of the present application are for more clearly illustrating the technical solutions of the embodiments of the present application, and do not constitute limitations on the technical solutions provided by the embodiments of the present application. For the evolution of architecture and the emergence of new business scenarios, the technical solutions provided by the embodiments of this application are also applicable to similar technical problems. In the embodiment of the present application, the method provided is applied to an NR system or a 5G network as an example for illustration.

Before introducing the embodiments of this application, first introduce the nouns involved in the embodiments of this application:

1) A sidelink (sidelink, SL) refers to: defined for direct communication between terminals. That is, the link between the terminal and the terminal directly communicates without forwarding through the base station.

2). The sidelink resource refers to the resource used by terminal 1 to transmit sidelink information with terminal 2 on the sidelink.

3). The sidelink information refers to: sidelink data or control information transmitted by any two terminals on the sidelink, and may also be called the first data packet or V2X service.

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

As shown in FIG. 1, FIG. 1 shows a communication system to which a method for sending sidelink resources provided by an embodiment of the present application is applied. The communication system includes: one or more network devices (such as shown in FIG. 1 network device 10), one or more terminals (such as the first terminal 20, the second terminal 30, and the third terminal 40 shown in FIG. 1). In FIG. 1, the terminal is taken as an example of a vehicle.

Wherein, the first terminal 20 communicates with the network device 10 , the first terminal 20 communicates with the second terminal 30 , and the second terminal 30 communicates with the third terminal 40 . Of course, the second terminal 30 and the third terminal 40 can also communicate with the network device 10 .

It should be noted that the communication system shown in FIG. 1 may further include: a core network. The network device 10 can be connected to the core network. The core network may be a 4G core network (for example, evolved packet core (EPC)) or a 5G core network (5G core, 5GC), or a core network in various future communication systems. And the roadside unit (roadsideunit, RSU). RSU can also provide various service information and data network access for each terminal in the system. Entertainment and other functions have greatly improved traffic intelligence.

Taking the core network as an example of a 4G core network, the network device 10 may be an evolved base station (evolved Node B, eNB or eNodeB) in the 4G system. The first terminal 20 is a terminal that can perform information transmission with the eNB. The eNB accesses the EPC network through the S1 interface.

Taking the core network as an example of a 5G core network, the network device 10 may be a next generation node B (thenext generation node B, gNB) in the NR system, and the first terminal 20 may be a terminal capable of information transmission with the gNB. The gNB accesses the 5GC through the NG interface.

Certainly, the network device 10 may also be a third generation partnership project (3rd generation partnership project, 3GPP) protocol base station, or may be a non-3GPP protocol base station.

Wherein, there is a first transmission link between the network device 10 and the first terminal 20 . For example, the first transmission link may be a Uu link. There is a second transmission link between the first terminal 20 and the second terminal 30 . For example, the second transmission link may be a sidelink. The Uu link is used to transmit the Uu service (information or data) sent by the network device 10 to the first terminal 20 .

The first terminal 20 and the second terminal 30 may transmit V2X services to each other on the sidelink, which may also be referred to as a first data packet or sidelink information. The first terminal 20 may transmit an uplink (Uplink, UL) Uu service to the network device 10 on the Uu link, and may also receive a downlink (Downlink, DL) Uu service sent by the network device 10 on the Uu link.

Wherein, the interface through which the first terminal 20 communicates directly with the second terminal 30 may be the interface 1 . For example, the interface 1 may be called a PC5 interface, which adopts a frequency band dedicated to the Internet of Vehicles (such as 5.9 GHz). The interface between the first terminal 20 and the network device 10 may be referred to as interface 2 (eg, Uu interface), and adopts a cellular network frequency band (eg, 1.8 GHz). The PC5 interface is generally used in V2X or D2D scenarios where direct communication between devices can be performed.

The above names of interface 1 and interface 2 are just examples, and the embodiment of the present application does not limit the names of interface 1 and interface 2.

As shown in FIG. 1, FIG. 1 shows a scenario provided by the embodiment of the present application. As shown in FIG. If it is decided to perform an overtaking operation, the vehicle X may send the second terminal 30 in front of it (for example, a vehicle identified as Y (abbreviation: vehicle Y)) on the first side link resource to the second terminal 30 in the dialog box 50. A data packet (for example, the first data packet can be an overtaking instruction, the current speed of vehicle X (for example, 75km/h)), so that after the vehicle Y receives the current speed of X and the overtaking instruction, it will slow down and drive, so that X is safe overtake. If the vehicle Y receives the current vehicle speed of X and an overtaking instruction, the vehicle Y can feed back the information of the dialog box 60 to the vehicle X. After vehicle X receives the information of vehicle Y, and determines that vehicle Y has correctly received the overtaking instruction and the current speed of vehicle X, it can feed back ACK to network device 10 as confirmation information, so that network device 10 can determine that the first sidelink resource The overtaking instruction sent to vehicle Y and the current speed of vehicle X have been correctly received by vehicle Y. However, since the time when vehicle X feeds back ACK to network device 10 may conflict with the random access message sent by vehicle X, vehicle X will give priority to sending random access message to network device 10 instead of feeding back ACK to network device 10 .

The scenario shown in FIG. 1 is only an example, and other scenarios of communication between terminals are also applicable to the solution of this application.

Usually, the V2X service is transmitted on the sidelink resource on the sidelink, and the Uu service is transmitted on the Uu resource on the Uu link.

There are two resource allocation methods for the first terminal 20 to obtain the sidelink. One is resource allocation based on network device 10 scheduling, that is, the network device 10 schedules sidelink resources for the first terminal 20 . The first terminal 20 may transmit sidelink data or sidelink information to the second terminal 30 on the sidelink resource. The other is that the first terminal 20 independently selects resource allocation in the resource pool, that is, the first terminal 20 independently selects sidelink resources in the resource pool configured or pre-configured by the network device 10 through system messages or dedicated signaling, so as to The sidelink data or sidelink information is transmitted to the second terminal 30 on the independently selected sidelink resource.

The first terminal 20 or the second terminal 30 is a device with a wireless communication function, which can be deployed on land, including indoor or outdoor, handheld or vehicle-mounted. It can also be deployed on water (such as ships, etc.). It can also be deployed in the air (for example, on aircraft, balloons and satellites, etc.). The terminal is also called user equipment (UE), mobile station (mobile station, MS), mobile terminal (mobile terminal, MT) and terminal equipment, etc. It is a device that provides voice and/or data connectivity to users. . For example, a terminal includes a handheld device with a wireless connection function, a vehicle-mounted device, and the like. At present, the terminal can be: mobile phone (mobile phone), tablet computer, notebook computer, palmtop computer, mobile internet device (mobile internet device, MID), wearable device (such as smart watch, smart bracelet, pedometer, etc.), In-vehicle equipment (such as automobiles, bicycles, electric vehicles, airplanes, ships, trains, high-speed rail, etc.), virtual reality (virtual reality, VR) equipment, augmented reality (augmented reality, AR) equipment, industrial control (industrial control) Wireless terminals, smart home equipment (such as refrigerators, TVs, air conditioners, electric meters, etc.), intelligent robots, workshop equipment, wireless terminals in self driving, wireless terminals in remote medical surgery, smart Wireless terminals in smart grid, wireless terminals in transportation safety, wireless terminals in smart city, or wireless terminals in smart home, flight equipment (for example, smart robots, hot air balloons, drones, airplanes), etc. In a possible application scenario of the present application, the terminal device is a terminal device that often works on the ground, such as a vehicle-mounted device. In this application, for ease of description, chips deployed in the above devices, such as System-On-a-Chip (SOC), baseband chips, etc., or other chips with communication functions may also be referred to as terminals.

The terminal can be a vehicle with corresponding communication functions, or a vehicle-mounted communication device, or other embedded communication devices, or it can be a user's handheld communication device, including a mobile phone, a tablet computer, and the like.

Currently, vehicles can communicate through vehicle-to-vehicle (V2V) or vehicle-to-roadside infrastructure (vehicle-to-infrastructure, V2I) (for example, the infrastructure is a roadside unit (RSU)) or vehicle Communication with pedestrians (vehicle to pedestrian, V2P) or vehicle to network communication (vehicle to network, V2N) to obtain road condition information or receive information services in a timely manner, these communication methods can be collectively referred to as V2X communication (where X stands for anything ). The above-mentioned communication usually refers to the network used for V2X communication as the Internet of Vehicles.

When the various solutions described in the embodiments of this application are applied to V2X scenarios, they can be applied to the following fields: unmanned driving (unmanned driving), automatic driving (automated driving/ADS), assisted driving (driver assistance/ADAS), intelligent driving (intelligent driving) ), connected driving, intelligent network driving, and car sharing.

As an example, in this embodiment of the application, the terminal may also be a wearable device. Wearable devices can also be called wearable smart devices, which is a general term for the application of wearable technology to intelligently design daily wear and develop wearable devices, such as glasses, gloves, watches, clothing and shoes. A wearable device is a portable device that is worn directly on the body or integrated into the user's clothing or accessories. Wearable devices are not only a hardware device, but also achieve powerful functions through software support, data interaction, and cloud interaction. Generalized wearable smart devices include full-featured, large-sized, complete or partial functions without relying on smart phones, such as smart watches or smart glasses, etc., and only focus on a certain type of application functions, and need to cooperate with other devices such as smart phones Use, such as various smart bracelets and smart jewelry for physical sign monitoring.

The network device 10 is an entity that cooperates with the first terminal 20 and can be used to transmit or receive signals. For example, it may be an access point (access point, AP) in WLAN, or an evolved base station (evolvedNode B, eNB or eNodeB) in LTE, or a relay station or access point, or a vehicle device, a wearable device, and Network equipment in the future 5G network or network equipment in the future evolved PLMN network, etc.

In addition, in the embodiment of the present invention, the network device provides services for the cell, and the terminal communicates with the network device through the transmission resource (for example, time domain resource, or frequency domain resource, or time frequency resource) used by the cell. The cell may be a cell corresponding to a network device (such as a base station). The cell may belong to a macro base station or a base station corresponding to a small cell. The small cell here may include: a metro cell, a micro cell cell), pico cell (Pico cell), femto cell (femto cell), etc. These small cells have the characteristics of small coverage and low transmission power, and are suitable for providing high-speed data transmission services.

FIG. 2 shows a schematic diagram of a hardware structure of a communication device provided by an embodiment of the present application. For the hardware structures of the first terminal 20, the second terminal 30, and the network device 10 in the embodiment of the present application, reference may be made to the structure shown in FIG. 2 . The communication device includes a processor 41 , a communication line 44 and at least one transceiver (in FIG. 2 , the transceiver 43 is used as an example for illustration).

The processor 41 can be a general-purpose central processing unit (central processing unit, CPU), a microprocessor, a specific application integrated circuit (application-specific integrated circuit, ASIC), or one or more devices used to control the execution of the program program of this application. integrated circuit.

Communication line 44 may comprise a pathway for communicating information between the above-described components.

Transceiver 43, using any device like a transceiver, is used to communicate with other devices or communication networks, such as Ethernet, radio access network (radio access network, RAN), wireless local area network (wireless local area networks, WLAN) and so on.

Optionally, the communication device may further include a memory 42 .

Memory 42 may be read-only memory (read-only memory, ROM) or other types of static storage devices that can store static information and instructions, random access memory (random access memory, RAM) or other types that can store information and instructions The dynamic storage device can also be an electrically erasable programmable read-only memory (electrically erasable programmable read-only memory, EEPROM), a compact disc read-only memory (CD-ROM) or other optical disc storage, optical disc storage ( including compact discs, laser discs, optical discs, digital versatile discs, blu-ray discs, etc.), magnetic disk storage media or other magnetic storage devices, or can be used to carry or store desired program code in the form of instructions or data structures and can be stored by a computer Any other medium, but not limited to. The memory may exist independently and be connected to the processor through the communication line 44 . Memory can also be integrated with the processor.

Wherein, the memory 42 is used to store computer-executed instructions for implementing the solution of the present application, and the execution is controlled by the processor 41 . The processor 41 is configured to execute computer-executed instructions stored in the memory 42, so as to implement the policy control method provided in the following embodiments of the present application.

Optionally, the computer-executed instructions in the embodiments of the present application may also be referred to as application program codes, which is not specifically limited in the embodiments of the present application.

In a specific implementation, as an embodiment, the processor 41 may include one or more CPUs, such as CPU0 and CPU1 in FIG. 2 .

In a specific implementation, as an embodiment, the communication device may include multiple processors, for example, the processor 41 and the processor 45 in FIG. 2 . Each of these processors may be a single-core (single-CPU) processor or a multi-core (multi-CPU) processor. A processor herein may refer to one or more devices, circuits, and/or processing cores for processing data (eg, computer program instructions).

A method for sending sidelink resources provided by an embodiment of the present application will be described in detail below with reference to FIG. 4 to FIG. 5 .

It should be noted that the name of the message between network elements or the name of each parameter in the message in the following embodiments of the present application is just an example, and other names may also be used in the specific implementation, and the embodiment of the present application does not make specific details on this limited.

It should be pointed out that the various embodiments of the present application may refer to each other, for example, the same or similar steps, method embodiments, communication system embodiments and device embodiments may refer to each other without limitation.

As shown in Figure 3a, on the Uu link, one method to ensure the reliability of data transmission between the terminal and the network device is to perform HARQ retransmission on the data. The basic process of HARQ for uplink data transmission on the Uu link is shown in FIG. New uplink data. 2. The first terminal 20 sends uplink data to the network device 10 . 3. After the network device 10 receives the uplink data, if the network device 10 fails to decode it. Then the network device 10 sends a PDCCH to the first terminal 20, and the PDCCH is used to schedule the first terminal 20 to retransmit the uplink data not successfully decoded by the network device 10 in the above steps. 4. The first terminal 20 retransmits the uplink data on the retransmission resource after determining the location of the retransmission resource according to the PDCCH.

As shown in FIG. 3 b , the basic process of HARQ for downlink data transmission on the Uu link: 1. The network device 10 sends downlink data to the first terminal 20 . 2. After the first terminal 20 receives the downlink data, if the decoding fails, the first terminal 20 feeds back a NACK to the network device 10. 3. The network device 10 will retransmit the downlink data after receiving the NACK. The first terminal 20 is made to receive downlink data again on a new physical downlink shared channel (physical downlink shared channel, PDSCH) according to the retransmission indication. The network device 10 performs retransmission of downlink data. 4. After receiving the downlink data, the first terminal 20 returns an ACK to the network device 10 after successful decoding.

The retransmission of downlink data by the network device 10 includes: the network device 10 indicates the resource position of the PDSCH through the PDCCH, and the PDSCH carries the retransmitted downlink data.

In the current LTE system, the basic HARQ process of sidelink data transmission is shown in FIG. 3 c : 1. The first terminal 20 sends sidelink data (including new transmission and retransmission of data) to the second terminal 30 . 2. The second terminal 30 decodes the sidelink data. Since in the current LTE system, the first terminal 20 uses a broadcast method to send sidelink data, therefore, no matter whether the second terminal 30 successfully decodes the sidelink data, the second terminal 30 does not send an ACK/ NACK feedback. Since the first terminal 20 has not received the ACK fed back by the second terminal 30, it may mistakenly think that the second terminal 30 has not successfully decoded, and may continue to retransmit the sidelink to the second terminal 30 in the subsequent process as in steps 2-M. However, since the second terminal 30 has successfully decoded the sidelink data, the second terminal 30 no longer decodes the retransmitted sidelink data. This will cause the first terminal 20 to repeatedly send the sidelink data, resulting in waste of sidelink resources.

In NR system, Sidelink supports unicast, multicast and broadcast transmission. For unicast and multicast transmissions, a retransmission mechanism based on HARQ feedback is supported. In the resource allocation mode based on the scheduling of the network device 10, the HARQ process of sidelink data transmission is shown in Figure 3d:

1. The network device 10 sends a PDCCH to the first terminal 20 to schedule a new transmission of sidelink data of the first terminal 20 . 2. The first terminal 20 sends sidelink data to the second terminal 30 . 3. After the second terminal 30 receives the sidelink data, if the decoding fails, the second terminal 30 feeds back a NACK to the first terminal 20 . 4. The first terminal 20 feeds back NACK to the network device 10. 5. The network device 10 sends a PDCCH to the first terminal 20, and schedules the first terminal 20 to resend to the second terminal 30 the sidelink that the second terminal 30 failed to decode Data, that is, sidelink data retransmission. 6. The first terminal 20 performs sidelink retransmission.

However, the first terminal 20 may not receive the confirmation information fed back by the second terminal 30, and at this time, the first terminal 20 may not be sure whether the second terminal 30 has correctly received the sidelink data. Furthermore, the first terminal 20 is not sure how to process the sidelink data subsequently.

However, as shown in FIG. 1 , when the first terminal 20 needs to feed back the acknowledgment information ACK/NACK of Sidelink data transmission to the network device 10 , there may be time conflicts or overlaps with other transmissions. For example, the time when the first terminal 20 sends ACK/NACK to the network device 10 is the same as the time when the first terminal 20 sends the first message to the network device 10 or the time when the first terminal 20 sends the first message to the second terminal 30, so Call it a conflict. If a conflict occurs, the first terminal 20 may discard the ACK/NACK sent to the network device 10, so that the network device 10 will not be able to receive the ACK/NACK from the first terminal 20, so the network device 10 may not be able to know that the first terminal 20 Whether the sidelink data sent to the second terminal 30 is correctly received. If the network device 10 does not configure sidelink resources for retransmission for the first terminal 20, the sidelink data that has not been received correctly may not be retransmitted. Or if the network device 10 blindly reassigns the sidelink for retransmission to the first terminal 20 without knowing whether the sidelink data sent by the first terminal 20 to the second terminal 30 is received correctly resources, but the sidelink data is correctly received by the second terminal 30, in this case, how the first terminal 20 handles the sidelink resources for retransmission is a problem that needs to be solved.

Based on this, in the embodiment of the present application, when the first terminal 20 determines that no confirmation information is sent to the network device 10 at the first moment 20, and the confirmation information indicates that the second terminal 30 has correctly received the first data packet, if the second A terminal 20 also receives a second sidelink resource for retransmitting the first data packet of the first sidelink HARQ process, and a new data retransmission (new data indicator, NDI). Since the NDI indication is usually used to indicate retransmission or new transmission, when this situation occurs, the first terminal 20 may process the second sidelink resource according to information performed by the first HARQ. Since the first data packet is correctly received by the second terminal 30, the first terminal 20 does not need to retransmit the first data packet on the second side link resource, and the first terminal ignores the second side link resource Alternatively, transmitting other data packets (for example, the second data packet) other than the first data packet can avoid unnecessary transmission of the first terminal 20 and avoid unnecessary feedback of the second terminal 30 .

An embodiment of the present application provides a method for processing sidelink resources, where the method is executed by a first communication device. The first communication device may be the first terminal 20, or a chip disposed in the first terminal 20, the second communication device in this method may be the second terminal 30 or a chip disposed in the second terminal 30, the following In the above embodiment, the first communication device is the first terminal 20 and the second communication device is the second terminal 30 as an example.

FIG. 4 shows a method for processing sidelink resources provided by an embodiment of the present application. The method includes:

Step 401 , the first terminal 20 determines that no acknowledgment information of the first sidelink HARQ process is sent to the network device 10 at the first moment 20 . The confirmation information is used to indicate whether the second terminal 30 correctly receives the first data packet of the first sidelink HARQ process sent by the first terminal 20 to the second terminal 30 on the first sidelink resource.

For example, the confirmation information may be HARQ information. Acknowledgment information can be: NACK or ACK. ACK indicates that the second terminal 30 correctly receives the first data packet. NACK indicates that the second terminal 30 did not correctly receive the first data packet. Specifically, the first data packet may be a data packet sent by the first terminal 20 to the second terminal 30 on the first side link resource through the side link. The sidelink refers to the sidelink between the first terminal 20 and the second terminal 30 . The first sidelink HARQ process is a sidelink HARQ process used to transmit the first data packet among one or more sidelink HARQ processes of the first terminal 20 .

It should be understood that, before step 401, the method provided by the embodiment of the present application further includes: the first terminal 20 sends the first data packet to the second terminal 30 on the first sidelink resource. If the second terminal 30 receives the first data packet correctly, the second terminal 30 sends an ACK to the first terminal 20 . If the second terminal 30 does not correctly receive the first data packet, the second terminal 30 sends a NACK to the first terminal 20 .

The acknowledgment information of the first sidelink HARQ process indicates that the acknowledgment information is used to reflect whether the first data packet associated with the first sidelink HARQ process is received correctly.

It can be understood that in this embodiment of the present application, correct reception may also be replaced by successful reception or successful decoding. In this embodiment of the present application, incorrect reception may also be replaced by unsuccessful reception or successful decoding. In the following embodiments, correct reception and incorrect reception are taken as examples.

In the embodiment of the present application, the first side link resource is a side link resource configured by the network device 10 for the first terminal 20 to transmit the first data packet. Alternatively, the first side link resource is a side link resource selected by the first terminal 20 from the side link resource pool for transmitting the first data packet.

It can be understood that the first data packet may be a newly transmitted data packet. The newly transmitted data packet is the data packet transmitted by the first terminal 20 to the second terminal 30 for the first time (first time). Or the first data packet is a retransmission data packet. The retransmission data packet is the data packet transmitted by the first terminal 2 to the second terminal 30 for the Mth time. In other words, the retransmitted data packet is a data packet that is not transmitted by the first terminal 20 to the second terminal 30 for the first time. M is an integer greater than or equal to 2, and M is less than or equal to the maximum number of retransmissions of the first terminal 20 . Or M is less than or equal to the maximum number of retransmissions of the first sidelink HARQ process.

Wherein, the first moment is the moment when the first terminal 20 sends confirmation information to the network device 10 .

In the embodiment of the present application, the failure of the first terminal to send the acknowledgment information of the first sidelink HARQ process to the network device may also be understood as: the acknowledgment information cannot be transmitted, or the first terminal 20 gives up sending the acknowledgment information to the network device 10 .

Step 402, the first terminal 20 determines a second side link resource. Wherein, the HARQ parameter of the second side link resource includes a new data indicator (new data indicator, NDI).

Optionally, the HARQ parameter may also include a process ID (HARQ Process ID).

Exemplarily, the second sidelink resource may be configured by the network device 10 to the first terminal 20 . That is, when the first terminal 20 does not send confirmation information to the second terminal 30 at the first moment, and the network device 10 does not receive the confirmation information, the network device 10 configures the second sidelink for the first terminal 20 road resources.

Exemplarily, the network device 10 sends a PDCCH to the first terminal 20, the PDCCH is used to schedule the first terminal 20 to retransmit the first data packet, and the PDCCH is also used to indicate the location of the second side link resource and the second The HARQ process number corresponding to the sidelink resource. For example, downlink control information (down control information, DCI) carried by the PDCCH is used to schedule SL grants (Grants), and the NDI and HARQ process ID corresponding to the SL Grants. The SL Grant is used to determine the location of the second side link resource.

The second sidelink resource may be received by the first terminal 20 at a third moment, where the third moment is located after the first moment.

It can be understood that the second sidelink resource is received by the first terminal 20 when the acknowledgment information is ACK and no acknowledgment information is sent to the network device 10 at the first moment 20 .

Step 403, in the case that the confirmation information indicates that the second terminal 30 receives the first data packet correctly, the first terminal 20 processes the second sidelink resource according to the HARQ parameter.

An embodiment of the present application provides a method for processing sidelink resources, in which the first terminal may determine that no acknowledgment information is sent to the network device at the first moment, and the acknowledgment information indicates that the second terminal correctly received the first data In the case of a packet, if the first terminal receives the second sidelink resource again. Because the HARQ parameter of the second side link resource includes the NDI indication. The NDI indication is usually used to indicate retransmission or new transmission, and when this happens, the first terminal can process the second sidelink resource according to the HARQ parameters. Since the first data packet is correctly received by the second terminal, the first terminal does not need to retransmit the first data packet, and unnecessary transmission of the first terminal can be avoided by processing the second sidelink resource, And avoid unnecessary feedback from the second terminal.

As another embodiment of the present application, as shown in FIG. 5, step 401 in the embodiment of the present application can be specifically implemented in the following manner:

Step 4011, the first terminal 20 determines that the time when the confirmation message is sent and the time when the first terminal 20 sends the first message are both the first time.

That is, the time when the confirmation information is sent is the same as the time when the first terminal 20 sends the first message, that is, the time when the confirmation information is sent and the time when the first terminal 20 sends the first message conflict or overlap in time.

The first terminal 20 may compare the priority of the physical uplink channel carrying the acknowledgment information with the priority of the first message, or the priority of the physical uplink channel carrying the acknowledgment information with the priority of the sidelink channel carrying the first message. A level-by-level comparison is made to determine whether no acknowledgment information has been sent to the network device 10 at the first moment 20 . For example, it can be realized through step 4012:

Step 4012, when the priority of the physical uplink channel carrying the confirmation information is lower than the priority of the first message, or the priority of the physical uplink channel carrying the confirmation information is lower than the priority of the sidelink channel carrying the first message In this case, the first terminal 20 determines that no confirmation information is sent to the network device 10 at the first moment 20 .

Exemplarily, the time conflict or overlap between the time when the confirmation information is sent and the time when the first terminal 20 sends the first message includes the following content:

Example 1-1), the first message is a message sent by the first terminal 20 to the network device 10 during the random access process.

Exemplarily, the first message may be message 1 (message1, Msg1) in the random access process. Message 1 is sent through a physical random access channel (physical random access channel, PRACH). Or the first message may be message 3 (Msg3) in the random access process. Message 3 passes through a physical uplink shared channel (physical uplink shared channel, PUSCH).

That is, if the time when the first terminal 20 transmits the confirmation information through the physical uplink channel is the same as the time when message 1 or message 3 is sent during the random access process, then the priority of the physical uplink channel carrying the confirmation information is lower than that of message 1 or message 3 priority, that is, the first terminal 20 preferentially transmits message 1 or message 3, and forgoes transmission of confirmation information. Therefore, the first terminal 20 does not send confirmation information to the network device 10 at the first moment.

Example 1-2), the physical uplink channel is an uplink physical control channel (physical uplink control channel, PUCCH), and the first message is a sidelink SL medium access control (medium access control, MAC) protocol data unit (protocol data unit, PDU), the sidelink channel carrying the first message is a sidelink shared channel (sindlink shared channel, SL-SCH). That is, at the first moment, when the first terminal 20 needs to send confirmation information to the network device 10 through the PUCCH, it also needs to send an SL MAC PDU to the second terminal 20 or other terminals on the side link SL. The SL MAC PDU may typically include one or more SL MAC service data units (SDUs) from different sidelink logical channels. The priorities of the different sidelink logical channels are different.

Correspondingly, in step 4012 in the embodiment of the present application, the first terminal 20 determines that at the first moment 20 is not Sending the acknowledgment information to the network device 10 includes: the priority of the PUCCH carrying the acknowledgment information at the first moment is lower than the priority of the physical sidelink shared channel (physical sidelink shared channel, PSSCH) mapped by the SL-SCH Next, the first terminal 20 does not send confirmation information to the network device 10 at the first moment.

That is, if the priority of the PUCCH carrying the acknowledgment information is lower than the priority of SL-SCH transmission, the first terminal 20 transmits the SL-SCH/PSSCH preferentially, and gives up the transmission of the PUCCH. Therefore, the first terminal 20 determines that confirmation information is not sent to the network device 10 at the first moment 20 .

In example 1-2), it is performed by the physical layer of the first terminal to give priority to the transmission of SL-SCH/PSSCH while giving up the transmission of PUCCH.

In this embodiment of the application, the priority of the PUCCH carrying the acknowledgment information and the priority of the PSSCH mapped to the SL-SCH depend on the relationship between the highest priority side link logical channel and the SL-SCH in the SL MAC PDU corresponding to the acknowledgment information. Comparison of the priority of the highest priority sidelink logical channel among the SL MAC PDUs to be transmitted by the SCH.

It should be understood that the network device 10 may configure resources for sending confirmation information on the PUCCH for the first terminal 20 in advance.

Wherein, the SL MAC PDU corresponding to the confirmation information refers to: the SL MAC PDU to which the confirmation information is directed.

For example, the priority of the highest priority sidelink logical channel in the SL MAC PDU corresponding to the acknowledgment message is lower than the priority of the highest priority sidelink logical channel in the SL MAC PDU transmitted on the SL-SCH , the first terminal 20 determines that the priority of the uplink physical control channel for transmitting the acknowledgment information is lower than the priority of the PSSCH mapped to the SL-SCH carrying the SL MAC PDU.

Example 1-3), the physical uplink channel is a physical uplink shared channel (physical uplink shared channel, PUSCH), the first message is to carry an SL MAC PDU, and the sidelink channel to carry the first message is an SL-SCH.

The first terminal 20 determines whether to send confirmation information to the network device 10 at the first moment 20 according to the priority of the physical uplink channel carrying the confirmation information and the priority of the sidelink channel carrying the first message. For example, the first terminal 20 determines that the confirmation information is not sent to the network device 10 at the first moment 20 according to the priority of the physical uplink channel carrying the confirmation information and the priority of the sidelink channel carrying the first message.

Correspondingly, in step 4012 in the embodiment of the present application, the first terminal 20 determines that at the first moment 20 is not Send confirmation information to network device 10, including:

If the priority of the PUSCH is lower than the priority of the SL-SCH, the first terminal 20 determines whether to send confirmation information to the network device 10 at the first moment 20 . For example, if the priority of the PUSCH is lower than the priority of the SL-SCH, the first terminal 20 determines that no acknowledgment information is sent to the network device 10 at the first moment 20 .

Since the PUSCH can usually be used to transmit the MAC PDU sent by the first terminal 20 to the network device 10, when the confirmation information and the MAC PDU transmitted on the PUSCH can be multiplexed on the PUSCH, regardless of the confirmation information to be transmitted on the PUSCH Whether it is ACK or NACK, it can be determined by comparing the priority of the highest priority uplink logical channel in the MAC PDU transmitted on PUSCH with the highest priority sidelink logical channel in the MAC PDU transmitted on SL-SCH The priority of PUSCH and the priority of SL-SCH.

Optionally, the comparison and processing of the priority of the PUSCH and the priority of the SL-SCH in Example 1-3 are performed by the MAC layer of the first terminal 20 .

Referring to a possible example 1-3-1, if the priority of the highest priority uplink logical channel in the MAC PDU transmitted on PUSCH is lower than the highest priority side channel in the MAC PDU transmitted on SL-SCH If the priority of the link logic channel is not specified, the first terminal determines that the priority of the PUSCH is lower than the priority of the SL-SCH.

It can be understood that the MAC PDU transmitted on the PUSCH includes MAC SDUs from one or more uplink logical channels, and the priorities of the one or more uplink logical channels may be the same or different. The MAC PDUs transmitted on the SL-SCH may also include MAC SDUs from one or more sidelink logical channels, and the priorities of the one or more sidelink logical channels may be the same or different.

For example, the uplink logical channel with the highest priority among the MAC PDUs transmitted on the PUSCH is the uplink logical channel 1. The sidelink logical channel with the highest priority in the MAC PDU transmitted on SL-SCH is sidelink logical channel 1, if the priority of sidelink logical channel 1 is higher than that of uplink logical channel 1 , then the first terminal 20 determines that the priority of the PUSCH is lower than the priority of the SL-SCH.

Referring to a possible example 1-3-2, if the acknowledgment corresponds to the priority of the sidelink logical channel with the highest priority in the SL MAC PDU, and the highest priority uplink logical channel in the MAC PDU transmitted on the PUSCH The priorities of the logical channels are all lower than the priority of the sidelink logical channel with the highest priority in the MAC PDU transmitted on the SL-SCH, then the first terminal 20 determines that the priority of the PUSCH is lower than the priority of the SL-SCH .

Exemplarily, a) represents the priority of the sidelink logical channel with the highest priority in the SL MAC PDU corresponding to the acknowledgment information. b) represents the priority of the highest priority uplink logical channel among the MAC PDUs transmitted on the PUSCH. c) The priority of the highest priority sidelink logical channel in the MAC PDU transmitted on the SL-SCH. If the priority of a) or the priority of b) is higher than the priority of c), then the first terminal 20 determines that the priority of PUSCH is higher than the priority of SL-SCH/PSSCH, that is, transmits PUCCH and abandons SL-SCH /PSSCH transmission. If both the priority of a) and the priority of b) are lower than the priority of c), then the first terminal 20 determines that the priority of PUSCH is lower than the priority of SL-SCH/PSSCH, that is, transmits SL-SCH/PSSCH, And give up the transmission of PUSCH.

Optionally, in Example 1-3-2, the comparison and processing of the priority of the PUSCH and the priority of the SL-SCH are performed by the MAC layer of the first terminal 20 .

Or, in the embodiment of the present application, the first terminal 20 sends confirmation information to the network device 10, but the network device 10 does not correctly receive the confirmation information, then the first terminal 20 determines that no confirmation information is sent to the network device 10.

As another embodiment of the present application, as shown in Figure 5 or Figure 6, the method provided in the embodiment of the present application further includes:

According to the priority of the physical uplink channel carrying the confirmation information, the priority of the first message, or the comparison between the priority of the physical uplink channel carrying the confirmation information and the priority of the sidelink channel of the first message, the first terminal 20, The first terminal 20 preferentially sends confirmation information to the network device 10 at the first moment.

Specifically, in step 404, the priority of the physical uplink channel carrying the confirmation information is higher than the priority of the first message, or the priority of the physical uplink channel carrying the confirmation information is higher than that of the sidelink channel carrying the first message In the case of priority, the first terminal 20 determines to send confirmation information to the network device 10 preferentially at the first moment.

For example, in the embodiment of the present application, the first terminal 20 determines that the priority of the physical uplink channel carrying the acknowledgment information is higher than that of the first message can be achieved in the following manner: if the priority of the physical uplink channel carrying the acknowledgment information is higher than that of the first message In the case of the priority of message 1 or message 3, the first terminal 20 determines that the priority of the uplink channel carrying the acknowledgment information is higher than the priority of the first message.

For example, in the embodiment of the present application, the first terminal 20 determines that the priority of the physical uplink channel carrying the acknowledgment information is higher than that of the sidelink channel carrying the first message can be achieved in the following manner: if the PUCCH carrying the acknowledgment information The priority of the SL-SCH transmission is higher than that of the SL-SCH transmission, and the first terminal 20 determines that the priority of the physical uplink channel carrying the acknowledgment information is higher than that of the sidelink channel carrying the first message.

Exemplarily, if the priority of the sidelink logical channel with the highest priority in the SL MAC PDU corresponding to the confirmation information is higher than that of the sidelink logical channel with the highest priority in the SL MAC PDU transmitted on the SL-SCH priority, the first terminal 20 determines that the priority of the PUCCH carrying the acknowledgment information is higher than the priority of SL-SCH transmission.

Referring to this implementation, in the embodiment of the present application, the first terminal 20 determines that the priority of the physical uplink channel carrying the acknowledgment information is higher than that of the sidelink channel carrying the first message can be achieved in the following manner: if the priority of the PUSCH is higher than the priority of the SL-SCH, and the first terminal 20 determines that the priority of the physical uplink channel carrying the acknowledgment information is higher than that of the sidelink channel carrying the first message.

Exemplarily, if the priority of the uplink logical channel with the highest priority in the MAC PDU transmitted on the PUSCH is higher than the priority of the sidelink logical channel with the highest priority in the MAC PDU transmitted on the SL-SCH , the first terminal determines that the priority of the PUSCH is higher than that of the SL-SCH.

Exemplarily, in Example 1-3-2, if the priority of a) or the priority of b) is higher than the priority of c), then the first terminal 20 determines that the priority of PUSCH is higher than that of SL-SCH/PSSCH priority, that is, transmit the PUCCH, and give up the transmission of the SL-SCH/PSSCH.

As another embodiment of the present application, as shown in FIG. 5 , step 403 in the embodiment of the present application can be specifically implemented through the following steps 4031 or 4032:

Step 4031, the first terminal transmits the second data packet on the second side link resource according to the HARQ parameter.

Wherein, the second data packet is different from the first data packet. The second data packet may be a newly transmitted data packet, or may be a retransmitted data packet.

It should be noted that, in the embodiment of the present application, the first terminal 20 may also associate a first variable (for example, defined as SL_HARQ_Feedback). The first variable associated with any sidelink HARQ process is used to reflect whether the data packet of any sidelink HARQ process sent by the first terminal 20 is correctly received by the opposite side. Exemplarily, in the embodiment of the present application, each sidelink HARQ process has a process number. The association of each sidelink HARQ process with a first variable means that the process number of each sidelink HARQ process is associated with a first variable.

Exemplarily, the method provided in the embodiment of the present application further includes: the first terminal 20, according to the process number carried in the HARQ parameter, if the process number is the process number of the first sidelink HARQ process, the first terminal 20 A first variable associated with the first sidelink HARQ process is determined. The first variable is used to reflect whether the second terminal 30 receives the first data packet correctly. The value of the first variable can be the first parameter value or the second parameter value. Wherein, the first parameter value indicates that the second terminal 30 correctly receives the first data packet, and the second parameter value indicates that the second terminal 30 does not correctly receive the first data packet. That is, if the first terminal 20 determines that the second terminal 30 has correctly received the first data packet, if the first terminal 20 receives the second sidelink resource again, the first terminal 20 can pass the second sidelink resource. The process number of the HARQ parameter corresponding to the uplink resource determines the value of the first variable of the HARQ process corresponding to the second side link resource. If the value of the first variable of the HARQ process corresponding to the second side link resource is the first parameter value, the first terminal 20 determines that the second side link resource may not be used as a resource for retransmitting the first data packet.

A possible implementation of step 4031 in this embodiment of the present application is: when the NDI indicates new transmission, and the HARQ process number is the process number of the second sidelink HARQ process, if the first sidelink HARQ process is associated with When the value of the first variable is the first parameter value, the first terminal 20 transmits the second data packet to the second terminal 30 on the second sidelink resource. That is, the network device 10 instructs the first terminal 20 to transmit the second data packet to the second terminal 30 on the second side link resource through the NDI.

Another possible implementation of step 4031 in the embodiment of the present application is: when the NDI indicates a new transmission, and the HARQ process number is the process number of the second sidelink HARQ process, the first terminal 20 performs the second sidelink HARQ process The second data packet is transmitted to the second terminal 30 on the link resource. The second data packet corresponds to the second sidelink HARQ process. That is, if the network device 10 instructs the first terminal 20 to perform new transmission through NDI, the first terminal 20 may transmit the second data packet corresponding to the second sidelink HARQ process on the second sidelink resource.

In addition, it can also be understood that, when the NDI indicates new transmission, the first terminal 20 determines that the HARQ buffer of the first sidelink HARQ process is empty, then the first terminal 20 can use the second sidelink resource transmit the second data packet.

It should be noted that, if the NDI indicates retransmission and the value of the first variable is the value of the second parameter, the first terminal 20 needs to retransmit the first data packet on the second sidelink resource.

If the NDI indicates retransmission and the HARQ buffer of the first sidelink HARQ process is not empty, the first terminal 20 needs to transmit the first data packet on the second sidelink resource.

Step 4032, the first terminal ignores (ignore) the second sidelink resource according to the HARQ parameter.

In this embodiment of the present application, it may be understood that the first terminal ignores (ignores) the second side link resource: the first terminal does not use the second side link resource to transmit the first data packet.

Correspondingly, as a possible implementation, step 4032 in the embodiment of the present application can be specifically implemented in the following manner: NDI indicates retransmission, and the HARQ process number is the process number of the first sidelink HARQ process , and when the value of the first variable associated with the first sidelink HARQ process is the first parameter value, the first terminal 20 ignores the second sidelink resource.

It should be noted that, since the network device 10 provided the process number to the first terminal 20 when allocating the second side link resources to the first terminal 20, if the HARQ process number included in the HARQ parameter is the same as that of the first side link In the case that the process numbers of the uplink HARQ processes are the same, the first terminal 20 may determine the parameter value of the first variable associated with the first sidelink HARQ process according to the process number of the first sidelink HARQ process.

It should be noted that the method provided by the embodiment of the present application further includes: the first terminal 20 determines the value of the first variable associated with the first sidelink HARQ process according to the confirmation information from the second terminal 30 .

Specifically, if the acknowledgment information is ACK, the first terminal determines that the value of the first variable associated with the first sidelink HARQ process is the first parameter value. If the acknowledgment information is NACK, the first terminal determines that the value of the first variable associated with the first sidelink HARQ process is the second parameter value.

As another possible implementation, step 4032 in the embodiment of the present application can be specifically implemented in the following manner: NDI indicates retransmission, and the HARQ (buffer) cache of the first sidelink HARQ process is empty, the first Terminal 20 ignores the second sidelink resource.

It can be understood that the method provided in the embodiment of the present application further includes: the first terminal 20 determines that the first data packet of the first sidelink HARQ process has been successfully received by the second terminal 30, and the first terminal 20 sends the first The HARQ buffer of the sidelink HARQ process is cleared.

The above step 401-step 404 mainly describes the situation where no confirmation information is sent to the network device 10 at the first moment 20, and the confirmation information indicates that the second terminal 30 correctly receives the first data packet, if the first terminal 20 When the second side link resource is received again, the first terminal 20 processes the second side link resource according to the HARQ parameter of the second side link resource. However, in the actual process, the second terminal 30 may correctly receive the first data packet, that is, the confirmation information is NACK, which means that the first terminal 20 needs to retransmit the first data packet, and needs to feed back NACK at the first moment For the network device 10, so that the network device 10 determines that the first data packet is not received correctly after receiving the NACK, the first terminal 20 may be allocated the second side link resource for retransmitting the first data packet. However, since the first terminal 20 does not feed back NACK to the network device 10, the first terminal 20 may also process the first data packet through the following embodiments.

Referring to FIG. 6 , a method for sending sidelink resources provided by an embodiment of the present application includes:

Step 601 , the first terminal 20 determines that no acknowledgment information of the first sidelink HARQ process is sent to the network device 10 at the first moment 20 . The confirmation information is used to indicate whether the second terminal 30 correctly receives the first data packet of the first sidelink HARQ process sent by the first terminal 20 to the second terminal 30 on the first sidelink resource.

For the specific implementation of step 601, reference may be made to the descriptions at step 401, step 4011, and step 4012 above, and details are not repeated here.

Step 602, the first terminal 20 determines a third side link resource for retransmitting the first data packet.

Exemplarily, the third sidelink resource used for retransmitting the first data packet may be obtained by the first terminal 20 from the network device 10 . Alternatively, the third sidelink resource used for retransmitting the first data packet may be independently selected by the first terminal 20 .

Step 603: In a case where the confirmation information indicates that the second terminal 30 has not correctly received the first data packet, the first terminal 20 sends the first data packet to the second terminal 30 through the third sidelink resource.

That is, if the acknowledgment information is NACK, the first terminal 20 needs to retransmit the third sidelink resource of the first data packet, and then use the third sidelink resource to retransmit the first data packet.

Specifically, the first terminal 20 may send the first data packet to the second terminal 30 on the third sidelink resource through the sidelink between the first terminal 20 and the second terminal 30 after the first moment.

An embodiment of the present application provides a method for sending sidelink resources. In this method, the first terminal may determine to retransmit the sidelink service when it is determined that no confirmation information is sent to the network device at the first moment. sidelink resource, and use the sidelink resource to resend the sidelink service to the second terminal, which is different from the situation in the prior art that the first terminal does not send confirmation information to the network device, the first terminal does not The reliability of sidelink data transmission can be improved compared to determining how to handle sidelink traffic.

Referring to another embodiment of the present application, if the sidelink resource used to retransmit the first data packet is configured by a network device, as shown in FIG. 7 , the method provided in this embodiment of the present application is before step 602, Can also include:

Step 604 , the first terminal 20 receives the second sidelink resource from the network device 10 . The second sidelink resource is associated with the first sidelink HARQ process. The second sidelink resource is associated with the first sidelink HARQ process, that is, the process number corresponding to the second sidelink resource is the same as the process number of the first sidelink HARQ process.

Wherein, the second side link resource is associated with the first side link HARQ process, specifically: indicating that the HARQ process number contained in the downlink control information (down control information, DCI) of the second side link resource is the first Process ID of one uplink HARQ process.

Correspondingly, step 602 may specifically be implemented in the following manner: the first terminal 20 determines that the second sidelink resource is the third sidelink resource.

Correspondingly, step 603 in the embodiment of the present application may specifically be implemented in the following manner: the first terminal 20 sends the first data packet to the second terminal 30 on the second sidelink resource after the first moment.

It can be understood that when the first terminal 20 needs to retransmit the first data packet of the first sidelink HARQ process m, but needs to feed back the NACK of the first sidelink HARQ process m to the network device 10, so that The network device 10 determines according to the received NACK that the first data packet has not been received correctly, and then decides whether to schedule the second sidelink resource for the first terminal 20 . However, since the first terminal 20 does not feed back the NACK of the first sidelink HARQ process m to the network device 10 at time n, the first terminal 20 can wait for the first sidelink HARQ process scheduled by the network device 10 The second sidelink grant for the retransmission of the first packet of m. After the first terminal 20 receives the sidelink grant, the first terminal 30 uses the sidelink grant to retransmit the first data packet of the first sidelink HARQ process m to the second terminal.

If the sidelink resource used to retransmit the first data packet is determined by the first terminal 20, as a possible embodiment of the present application, step 602 provided in the embodiment of the present application can be specifically implemented in the following manner: In the case that the confirmation information indicates that the second terminal 30 has not correctly received the first data packet, the first terminal 20 determines the first side link resource as the third side link resource.

Wherein, the first side link resource may be a side link resource configured by the network device 10 for the first terminal 20 to transmit the first data packet. The first side link resource may also be a side link resource independently selected by the first terminal 20 in a preconfigured side link resource pool.

Correspondingly, step 603 provided in the embodiment of the present application may specifically be implemented in the following manner: the first terminal sends the first data packet to the second terminal by using the first sidelink resource at the second moment. The second moment is located after the first moment.

Exemplarily, the second moment is obtained from the first moment and a preset offset value.

Exemplarily, the preset offset value in this embodiment of the present application may be configured by the network device 10 to the first terminal 20, and the preset offset value may also be determined by the first terminal 20 based on a predefined protocol.

For example, when the first terminal 20 determines that it needs to retransmit the first data packet of the first sidelink HARQ process m, it needs to feed back the NACK of the first sidelink HARQ process m to the network device 10 at time n, so that The network device 10 determines according to the received NACK that the first data packet has not been received correctly, and then decides whether to schedule the second sidelink resource for the first terminal 20 . However, since the first terminal 20 does not feed back the NACK of the first sidelink HARQ process m to the network device 10 at time n, the first terminal 20 can use the first sidelink resource for the previous transmission of the first data packet , retransmit the first data packet to the second terminal 30 at time n+X. Wherein, X represents a preset offset value, and n represents a first moment.

In the embodiment of the present application, the first terminal 20 may determine the third sidelink resource by using the first method or the second method through a predefined protocol. Of course, the sidelink resources determined by the first terminal 20 in the first manner or in the second manner may also be configured by the network device 10 . When the network device 10 configures the first terminal 20 to determine the third side link resource using the first method or the second method, referring to FIG. 7 , the method provided by the embodiment of the present application may further include before step 601:

Step 605 , the network device 10 sends indication information to the first terminal 20 . The indication information is used to instruct the first terminal 20 to determine the sidelink resource in the first manner or in the second manner. Wherein, the first way is: the first terminal 20 determines the second sidelink resource reallocated by the network device 10 to the first terminal 20 as the third sidelink resource. The second way is: the first terminal 20 determines the first side link resource as the third side link resource.

It can be understood that the first mode is that the first terminal 20 waits for the network device 10 to reallocate the second side link resource for the first terminal 20, and determines the second side link resource as the third side link resource . If it is configured as the first method, the first terminal 20 and the network device 10 negotiate in advance. If the first terminal 20 does not send confirmation information to the network device 10, that is, when the network device 10 does not receive the confirmation information, the network device 10 defaults to the first If a data packet is not successfully received, the network device may determine 10 that the second sidelink resource needs to be allocated to the first terminal 20 .

It can be understood that, in the second mode, that is, the first terminal 20 retransmits the first data packet by using the first sidelink resource for the previous transmission of the first data packet after the first moment. If it is configured as the second mode, the first terminal 20 and the network device 10 agree in advance that if the first terminal 20 does not send confirmation information to the network device 20, that is, when the network device 10 does not receive the confirmation information, the network device 10 It is determined that there is no need to allocate the second side link resource to the first terminal 20, so that the first terminal 20 can use the first side link resource to retransmit the first data packet.

Step 606 , the first terminal 20 receives indication information from the network device 10 .

Correspondingly, the first terminal 20 determines to use the first method or the second method to determine the sidelink resource according to the indication information.

It should be noted that, if the first terminal 20 and the network device 10 negotiate in advance to determine the sidelink resources in the first way or the second way, then step 605 and step 606 may be omitted. That is, step 605 and step 606 are optional steps.

It can be understood that the solution described in Figure 4 or Figure 5 in the embodiment of the present application can be implemented together with the solutions described in Figure 6 and Figure 7 as a complete solution, and of course the solution described in Figure 4 or Figure 5 can be used as a solution Implementation, used to describe the situation where the first terminal 20 does not send confirmation information to the network device 10, and the confirmation information indicates that the first data packet is received correctly, and the network device 10 reschedules the second side for the first terminal 20 In the case of uplink resources, how the first terminal 20 processes the second sidelink resources. The solutions described in FIG. 6 and FIG. 7 are implemented as one solution, and are used to describe that when the first terminal 20 does not send confirmation information to the network device 10, and when the confirmation information indicates that the first data packet has not been received correctly, the first The terminal 20 retransmits the first data packet to the second terminal 30 by re-determining the sidelink resource used for retransmission.

As shown in FIG. 8, FIG. 8 shows a method for processing sidelink resources provided by an embodiment of the present application, including:

Step 801 , the first terminal 20 sends confirmation information of the first sidelink HARQ process to the network device 10 at the first moment 20 . The confirmation information is used to indicate that the second terminal 30 correctly receives the first data packet of the first sidelink HARQ process sent by the first terminal 20 to the second terminal 30 on the first sidelink resource.

Step 802, if the first terminal 20 receives the second sidelink resource from the network device 10 again.

Step 803, when the first terminal 20 determines that the second terminal 30 has correctly received the first data packet, the first terminal 20 processes the second sidelink resource according to the HARQ parameter of the second sidelink resource. Wherein, the HARQ parameter of the second side link resource includes NDI.

The scheme described in FIG. 8 is applicable to the first terminal 20 sending the acknowledgment information of the first side link HARQ process to the network device 10, but the network device 10 does not receive the acknowledgment information, and assigns the second side link to the first terminal 20. The condition of the link resource.

Referring to an implementation manner of the present application, step 803 in the embodiment of the present application may be implemented in the following manner: reference may be made to the above step 4031 , which will not be repeated here.

Referring to an implementation manner of the present application, step 803 in the embodiment of the present application may be implemented in the following manner: reference may be made to the above step 4032 , which will not be repeated here.

Referring to another embodiment of the present application, as shown in FIG. 8 , the method provided by the embodiment of the present application further includes: the first terminal 20 determines that the first data packet has been successfully received by the second terminal 30, and the first terminal 20 clears the first HARQ buffer for sidelink HARQ process.

For example, the first terminal transmits the second data packet on the second side link resource according to the HARQ parameters of the second side link resource, including: the NDI indicates new transmission, and the HARQ process number is the first side link resource When the process number of the link HARQ process and the value of the first variable is the first parameter value, the first terminal transmits the second data packet on the second side link resource.

For example, step 801 may specifically be implemented in the following manner: the first terminal 20 determines that the time when the confirmation information is sent and the time when the first terminal 20 sends the first message are both the first time. When the priority of the physical uplink channel carrying the confirmation information is higher than that of the first message, or the priority of the physical uplink channel carrying the confirmation information is higher than that of the sidelink channel carrying the first message Next, the first terminal 20 determines to send confirmation information to the network device 10 at the first moment 20 .

For example, the first message is a message sent by the first terminal 20 to the network device 10 during the random access process.

For example, the physical uplink channel is a physical uplink control channel, the first message is a sidelink SL medium access control MAC protocol data unit PDU, and the sidelink channel carrying the first message is a sidelink shared channel SL- SCH, the first terminal determines to send confirmation information to the network device at the first moment according to the priority of the physical uplink channel carrying the confirmation information and the priority of the sidelink channel carrying the first message, including: at the first moment In a case where the priority of the physical uplink control channel carrying the acknowledgment information is higher than the priority of the physical sidelink shared channel PSSCH mapped to the sidelink shared channel, the first terminal determines to send an acknowledgment to the network device at the first moment information.

For example, the priority of the highest-priority sidelink logical channel in the SL MAC PDU corresponding to the acknowledgment message is higher than the priority of the highest-priority sidelink logical channel in the SL MAC PDU transmitted on the SL-SCH The first terminal determines that the priority of the physical uplink control channel carrying the acknowledgment information is higher than the priority of the PSSCH mapped to the SL-SCH carrying the SL MAC PDU.

For example, the physical uplink channel is the physical uplink shared channel PUSCH, the first message is the sidelink SL media access control MAC protocol data unit PDU, and the sidelink channel carrying the first message is the sidelink shared channel SL -Sch. According to the priority of the uplink channel carrying the confirmation information and the priority of the sidelink channel carrying the first message, the first terminal determines to send the confirmation information to the network device at the first moment, including: if the priority of the PUSCH is higher than Priority of the SL-SCH, the first terminal determines to send confirmation information to the network device at the first moment.

For example, if the priority of the highest priority uplink logical channel in the MAC PDU transmitted on the PUSCH is higher than the priority of the highest priority sidelink logical channel in the MAC PDU transmitted on the SL-SCH level, the first terminal determines that the priority of the PUSCH is higher than the priority of the SL-SCH.

For example, if the priority of the sidelink logical channel with the highest priority in the SL MAC PDU corresponding to the acknowledgment information and the priority of the uplink logical channel with the highest priority in the MAC PDU transmitted on the PUSCH are higher than those in the If the priority of the sidelink logical channel with the highest priority among the MAC PDUs transmitted on the SL-SCH is higher than that of the SL-SCH, the first terminal determines that the priority of the PUSCH is higher than that of the SL-SCH.

In another embodiment of the present application, the method provided in the embodiment of the present application further includes: the priority of the physical uplink channel carrying the confirmation information is lower than the priority of the first message, or the priority of the physical uplink channel carrying the confirmation information is lower than that of the first message. If the level is lower than the priority of the sidelink channel carrying the first message, the first terminal sends the first message preferentially at the first moment. That is, the confirmation information is discarded.

As shown in FIG. 9, as another possible embodiment of the present application, as shown in FIG. 9, this embodiment of the present application provides a method for processing sidelink resources, including:

In step 901, the first terminal 20 determines to send confirmation information of the first sidelink HARQ process to the network device 10 at a first moment. The confirmation information is used to indicate that the second terminal 30 has not correctly received the first data packet of the first sidelink HARQ process sent by the first terminal 20 to the second terminal 30 on the first sidelink resource.

For the specific implementation of step 901, reference may be made to the description at step 801, which will not be repeated here.

Step 902: If the first terminal 20 does not receive the second sidelink resource from the network device 10, the first terminal 20 determines to determine the first sidelink resource as the third sidelink resource.

Wherein, the first side link resource may be a side link resource configured by the network device 10 for the first terminal 20 to transmit the first data packet. The first side link resource may also be a side link resource independently selected by the first terminal 20 in a preconfigured side link resource pool.

Specifically, the first terminal 20 is preconfigured to determine the side link resource in the second manner, or the first terminal 20 determines from the network device 10 to determine the side link resource in the second manner. The second way is: the first terminal 20 determines the first side link resource as the third side link resource.

Step 903, the first terminal 20 resends the first data packet to the second terminal 30 through the first side link resource.

For the specific implementation of step 903, reference may be made to step 603, which may be implemented in the following manner, which will not be repeated here.

It should be understood that if the content involved in Fig. 8 and Fig. 9 is the same as that in Fig. 5-Fig. Let me repeat.

The foregoing mainly introduces the solution of the embodiment of the present application from the perspective of interaction between various network elements. It can be understood that, in order to realize the above-mentioned functions, each network element, such as the first terminal, includes a corresponding hardware structure and/or software module for performing each function. Those skilled in the art should easily realize that the present application can be implemented in the form of hardware or a combination of hardware and computer software in combination with the units and algorithm steps of each example described in the embodiments disclosed herein. Whether a certain function is executed by hardware or computer software drives hardware depends on the specific application and design constraints of the technical solution. Those skilled in the art may use different methods to implement the described functions for each specific application, but such implementation should not be regarded as exceeding the scope of the present application.

In this embodiment of the present application, the first terminal may divide the functional units according to the above method example. For example, each functional unit may be divided corresponding to each function, or two or more functions may be integrated into one processing unit. The above-mentioned integrated units can be implemented in the form of hardware or in the form of software functional units. It should be noted that the division of units in the embodiment of the present application is schematic, and is only a logical function division, and there may be another division manner in actual implementation.

The method according to the embodiment of the present application is described above with reference to FIG. 1 to FIG. 9 , and the apparatus for transmitting sidelink resources for performing the above method provided in the embodiment of the present application is described below. Those skilled in the art can understand that the methods and devices can be combined and referred to each other, and the device for sending sidelink resources provided in this embodiment of the present application can perform the steps performed by the first terminal in the above method for sending sidelink resources.

In the case of using integrated units, FIG. 10 shows an apparatus for sending sidelink resources involved in the above-mentioned embodiments, and the apparatus for sending sidelink resources may include: a processing unit 101 . Optionally, the device may further include a communication unit 102 .

In an example, the apparatus for sending sidelink resources is the first terminal, or is a chip applied to the first terminal. In this case, the processing unit 101, the apparatus for supporting the sending of sidelink resources, executes step 401, step 402, and step 402 in FIG. 4 performed by the first terminal in the above embodiment.

In a possible embodiment, the processing unit 101 is further configured to support the means for sending sidelink resources to perform step 4011 , step 4012 , step 4031 , and step 4032 performed by the first terminal in the foregoing embodiments. The communication unit 102 is further configured to support the apparatus for sending sidelink resources to perform step 404 performed by the first terminal in the foregoing embodiment.

In another example, the apparatus for sending sidelink resources is the first terminal, or is a chip applied to the first terminal. In this case, the processing unit 101, the apparatus for supporting the sending of sidelink resources, performs step 601 and step 602 performed by the first terminal in the foregoing embodiment. The communication unit 102, the apparatus for supporting the sending of sidelink resources executes step 603 executed by the first terminal in the foregoing embodiment.

In a possible embodiment, the communication unit 102, the device for supporting the sending of the sidelink resource, performs step 604 and step 606 performed by the first terminal in the foregoing embodiment.

In another example, the apparatus for sending sidelink resources is the first terminal, or is a chip applied to the first terminal. In this case, the communication unit 102 is configured to support the apparatus for sending the sidelink resource to perform step 801 and step 802 performed by the first terminal in the above embodiment. The processing unit 101 is configured to support the apparatus for sending sidelink resources to perform step 803 performed by the first terminal in the foregoing embodiment.

In another example, the apparatus for sending sidelink resources is the first terminal, or is a chip applied to the first terminal. In this case, the communication unit 102 is configured to support the device for sending the sidelink resource to perform step 901 and step 903 performed by the first terminal in the above embodiment. The processing unit 101 is configured to support the apparatus for sending sidelink resources to perform step 902 performed by the first terminal in the foregoing embodiment.

In the case of using integrated units, FIG. 11 shows a schematic diagram of a possible logical structure of the apparatus for sending sidelink resources involved in the above embodiment. The device for sending sidelink resources includes: a processing module 112 and a communication module 113 . The processing module 112 is used to control and manage the actions of the device sending the sidelink resource, for example, the processing module 112 is used to execute the steps of information/data processing in the device sending the sidelink resource. The communication module 113 is used to support the step of sending or receiving information/data by the device sending sidelink resources.

In a possible embodiment, the device for sending sidelink resources may further include a storage module 111, configured to store program codes and data of the device for sending sidelink resources.

In an example, the apparatus for sending sidelink resources is the first terminal, or is a chip applied to the first terminal. In this case, the processing module 112, the apparatus for supporting the sending of sidelink resources, executes step 401, step 402, and step 402 in FIG. 4 performed by the first terminal in the above embodiment.

In a possible embodiment, the processing module 112 is further configured to support the means for sending sidelink resources to perform step 4011 , step 4012 , step 4031 , and step 4032 performed by the first terminal in the foregoing embodiment. The communication module 113 is further configured to support the apparatus for sending sidelink resources to perform step 404 performed by the first terminal in the foregoing embodiment.

In another example, the apparatus for sending sidelink resources is the first terminal, or is a chip applied to the first terminal. In this case, the processing module 112, the apparatus for supporting the sending of sidelink resources, performs step 601 and step 602 performed by the first terminal in the foregoing embodiment. The communication module 113, the device for supporting the sending of sidelink resources executes step 603 performed by the first terminal in the foregoing embodiment.

In a possible embodiment, the communication module 113, the device for supporting the sending of sidelink resources, executes step 604 and step 606 performed by the first terminal in the foregoing embodiment.

In another example, the apparatus for sending sidelink resources is the first terminal, or is a chip applied to the first terminal. In this case, the communication module 113 is configured to support the device for sending sidelink resources to perform step 801 and step 802 performed by the first terminal in the above embodiment. The processing module 112 is configured to support the apparatus for sending sidelink resources to perform step 803 performed by the first terminal in the foregoing embodiment.

In another example, the apparatus for sending sidelink resources is the first terminal, or is a chip applied to the first terminal. In this case, the communication module 113 is configured to support the device for sending the sidelink resource to perform step 901 and step 903 performed by the first terminal in the above embodiment. The processing module 112 is configured to support the apparatus for sending sidelink resources to perform step 902 performed by the first terminal in the foregoing embodiment.

Wherein, the processing module 112 may be a processor or a controller, such as a central processing unit, a general processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array or other programmable logic devices, transistor logic devices, hardware components or any combination thereof. It can implement or execute the various illustrative logical blocks, modules and circuits described in connection with the present disclosure. The processor can also be a combination that implements computing functions, such as a combination of one or more microprocessors, a combination of a digital signal processor and a microprocessor, and the like. The communication module 113 may be a transceiver, a transceiver circuit, or a communication interface. The storage module 111 may be a memory.

When the processing module 112 is the processor 41 or the processor 45, the communication module 113 is the transceiver 43, and the storage module 111 is the memory 42, the device for sending sidelink resources involved in this application may be as shown in FIG. 2 communication device.

In an example, the communication device is a first terminal, or a chip applied to the first terminal. In this case, the processor 41 or the processor 45 is configured to support the communication device to execute step 401, step 402, and step 402 in FIG. 4 by the first terminal in the above embodiment.

In a possible embodiment, the processor 41 or the processor 45 is further configured to support the communication device to execute step 4011, step 4012, step 4031, and step 4032 performed by the first terminal in the foregoing embodiment. The transceiver 43 is further configured to support the communication device to perform step 404 performed by the first terminal in the foregoing embodiment.

In another example, the communication device is the first terminal, or a chip applied to the first terminal. In this case, the processor 41 or the processor 45 is configured to support the communication device to execute step 601 and step 602 executed by the first terminal in the foregoing embodiment. The transceiver 43 is configured to support the communication device to perform step 603 performed by the first terminal in the foregoing embodiment.

In a possible embodiment, the transceiver 43 is configured to support the communication device to execute step 604 and step 606 performed by the first terminal in the foregoing embodiment.

In another example, the communication device is a first terminal, or a chip applied to the first terminal. In this case, the transceiver 43 is used to support the communication device to execute step 801 and step 802 performed by the first terminal in the above embodiment. The processor 41 or the processor 45 is configured to support the communication device to execute step 803 performed by the first terminal in the foregoing embodiment.

In another example, the communication device is a first terminal, or a chip applied to the first terminal. In this case, the transceiver 43 is used to support the communication device to execute step 901 and step 903 performed by the first terminal in the above embodiment. The processor 41 or the processor 45 is configured to support the communication device to execute step 902 performed by the first terminal in the foregoing embodiment.

FIG. 12 is a schematic structural diagram of a chip 150 provided by an embodiment of the present application. The chip 150 includes one or more than two (including two) processors 1510 and a communication interface 1530 .

Optionally, the chip 150 further includes a memory 1540 , which may include a read-only memory and a random access memory, and provides operation instructions and data to the processor 1510 . A part of the memory 1540 may also include a non-volatile random access memory (non-volatile random access memory, NVRAM).

In some implementations, the memory 1540 stores the following elements, execution modules or data structures, or their subsets, or their extended sets.

In the embodiment of the present application, the corresponding operation is executed by calling the operation instruction stored in the memory 1540 (the operation instruction may be stored in the operating system).

In a possible implementation manner, the chips used by the first terminal have similar structures, and different devices may use different chips to realize their respective functions.

The processor 1510 controls processing operations of any one of the first terminals, and the processor 1510 may also be called a central processing unit (central processing unit, CPU).

The memory 1540 may include read-only memory and random-access memory, and provides instructions and data to the processor 1510 . A portion of memory 1540 may also include NVRAM. For example, the memory 1540, the communication interface 1530, and the memory 1540 in the application are coupled together through the bus system 1520, wherein the bus system 1520 may include a power bus, a control bus, and a status signal bus in addition to a data bus. However, for clarity of illustration, the various buses are labeled as bus system 1520 in FIG. 12 .

The methods disclosed in the foregoing embodiments of the present application may be applied to the processor 1510 or implemented by the processor 1510 . The processor 1510 may be an integrated circuit chip with signal processing capability. In the implementation process, each step of the above method may be implemented by an integrated logic circuit of hardware in the processor 1510 or instructions in the form of software. The above-mentioned processor 1510 may be a general-purpose processor, a digital signal processor (digital signal processing, DSP), an ASIC, an off-the-shelf programmable gate array (field-programmable gate array, FPGA) or other programmable logic devices, discrete gates or transistors Logic devices, discrete hardware components. Various methods, steps, and logic block diagrams disclosed in the embodiments of the present application may be implemented or executed. A general-purpose processor may be a microprocessor, or the processor may be any conventional processor, or the like. The steps of the method disclosed in connection with the embodiments of the present application may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor. The software module can be located in a mature storage medium in the field such as random access memory, flash memory, read-only memory, programmable read-only memory or electrically erasable programmable memory, register. The storage medium is located in the memory 1540, and the processor 1510 reads the information in the memory 1540, and completes the steps of the above method in combination with its hardware.

In a possible implementation manner, the communication interface 1530 is configured to perform the receiving and sending steps of the first terminal in the embodiments shown in FIGS. 4-9 . The processor 1510 is configured to execute the processing steps of the first terminal in the embodiments shown in FIGS. 4-9 .

The above communication unit may be a communication interface of the device for receiving signals from other devices. For example, when the device is implemented as a chip, the communication unit is a communication interface used by the chip to receive or send signals from other chips or devices.

In addition, the embodiment of the present application may provide a computer-readable storage medium, where instructions are stored in the computer-readable storage medium, and when the instructions are executed, the functions of the first terminal as shown in FIG. 4 and FIG. 5 are realized.

An embodiment of the present application provides a computer-readable storage medium, and an instruction is stored in the computer-readable storage medium. When the instruction is executed, the functions of the first terminal as shown in FIG. 6 and FIG. 7 are implemented.

An embodiment of the present application provides a computer-readable storage medium, where an instruction is stored in the computer-readable storage medium, and when the instruction is executed, the function of the first terminal as shown in FIG. 8 is realized.

An embodiment of the present application provides a computer-readable storage medium, where instructions are stored in the computer-readable storage medium, and when the instructions are executed, functions of the first terminal as shown in FIG. 9 are realized.

An embodiment of the present application provides a computer program product including instructions. The computer program product includes instructions. When the instructions are executed, the functions of the first terminal as shown in FIG. 8 are implemented.

An embodiment of the present application provides a computer program product including instructions. The computer program product includes instructions. When the instructions are executed, the functions of the first terminal as shown in FIG. 9 are realized.

An embodiment of the present application provides a computer program product including instructions. The computer program product includes instructions. When the instructions are executed, the functions of the first terminal as shown in FIG. 4 or FIG. 5 are realized.

An embodiment of the present application provides a computer program product including instructions. The computer program product includes instructions. When the instructions are executed, the functions of the first terminal as shown in FIG. 6 or FIG. 7 are realized.

An embodiment of the present application provides a chip, which is applied to a first terminal. The chip includes at least one processor and a communication interface, the communication interface is coupled to at least one processor, and the processor is used to run instructions, so as to realize the The function of the first terminal in 5.

An embodiment of the present application provides a chip, which is applied to a first terminal. The chip includes at least one processor and a communication interface, the communication interface is coupled to at least one processor, and the processor is used to run instructions, so as to realize the Function of the first terminal in 7.

An embodiment of the present application provides a chip, which is applied to a first terminal. The chip includes at least one processor and a communication interface, the communication interface is coupled to at least one processor, and the processor is used to run instructions to implement the first terminal as shown in FIG. function of a terminal.

An embodiment of the present application provides a chip, which is applied to a first terminal. The chip includes at least one processor and a communication interface, the communication interface is coupled to at least one processor, and the processor is used to run instructions to implement the first terminal shown in FIG. function of a terminal.

An embodiment of the present application provides a computer program product including instructions. The computer program product includes instructions. When the instructions are executed, the functions of the first terminal as shown in FIG. 4 , FIG. 5 or FIG. 6 are realized.

An embodiment of the present application provides a chip, which is applied to a first terminal. The chip includes at least one processor and a communication interface, the communication interface is coupled to at least one processor, and the processor is used to run instructions, so as to realize the 5. Functions of the first terminal in FIG. 6 .

An embodiment of the present application provides a communication system, the communication system includes a first terminal, a second terminal and a network device 10, wherein the first terminal is used to perform the steps performed by the first terminal in Figures 4 to 9, and the network device 10 is used to execute the steps executed by the network device 10 in FIG. 4 to FIG. 9 .

In the above embodiments, all or part of them may be implemented by software, hardware, firmware or any combination thereof. When implemented using software, it may be implemented in whole or in part in the form of a computer program product. The computer program product comprises one or more computer programs or instructions. When the computer program or instructions are loaded and executed on the computer, the processes or functions described in the embodiments of the present application are executed in whole or in part. The computer may be a general purpose computer, a special purpose computer, a computer network, network equipment, user equipment, or other programmable devices. The computer program or instructions may be stored in or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer program or instructions may be downloaded from a website, computer, A server or data center transmits to another website site, computer, server or data center by wired or wireless means. The computer-readable storage medium may be any available medium that can be accessed by a computer, or a data storage device such as a server or a data center integrating one or more available media. The available medium may be a magnetic medium, such as a floppy disk, a hard disk, or a magnetic tape; it may also be an optical medium, such as a digital video disc (digital video disc, DVD); it may also be a semiconductor medium, such as a solid state drive (solid state drive). , SSD).

Although the present application has been described in conjunction with various embodiments herein, those skilled in the art can understand and realize the disclosure by viewing the drawings, the disclosure, and the appended claims during the implementation of the claimed application. Other Variations of Embodiments. In the claims, the word "comprising" does not exclude other components or steps, and "a" or "an" does not exclude a plurality. A single processor or other unit may fulfill the functions of several items recited in the claims. The mere fact that certain measures are recited in mutually different dependent claims does not indicate that these measures cannot be combined to advantage.

Although the application has been described in conjunction with specific features and embodiments thereof, it will be apparent that various modifications and combinations can be made thereto without departing from the spirit and scope of the application. Accordingly, the specification and drawings are merely illustrative of the application as defined by the appended claims and are deemed to cover any and all modifications, variations, combinations or equivalents within the scope of this application. Obviously, those skilled in the art can make various changes and modifications to the application without departing from the spirit and scope of the application. In this way, if these modifications and variations of the application fall within the scope of the claims of the application and their equivalent technologies, the application also intends to include these modifications and variations.

Claims (21)

1. A method for processing sidelink resources, comprising: receiving, by the first terminal, the second sidelink resource sent by the network device; The first terminal device ignores the second side link resource or transmits the second data packet on the second side link resource according to the HARQ parameter of the second side link resource. 2. The method according to claim 1, wherein the HARQ parameters of the second sidelink resource include a new data indication NDI and a HARQ process number, and the first terminal according to the second sidelink resource The HARQ parameters of the downlink resource, ignoring the second sidelink resource, include: The NDI indicates retransmission, and the HARQ process number is associated with the process number of the first sidelink HARQ process, and the value of the first variable associated with the first sidelink HARQ process is a first parameter value In the case of , the first terminal ignores the second sidelink resource; Wherein, the first parameter value indicates that the second terminal correctly receives the first data packet of the first sidelink HARQ process sent by the first terminal. 3. The method according to claim 1, wherein the HARQ parameters of the second sidelink resource include a new data indication NDI and a HARQ process number, and the first terminal according to the second sidelink resource The HARQ parameters of the downlink resource, ignoring the second sidelink resource, include: When the NDI indicates retransmission, and the HARQ process number is associated with the process number of the first sidelink HARQ process, and the HARQ cache of the first sidelink HARQ process is empty, the second A terminal ignores the second sidelink resource. 4. method according to claim 3, is characterized in that, described method also comprises: If the first data packet of the first sidelink HARQ process sent by the first terminal to the second terminal has been successfully received by the second terminal, the first terminal clears the first sidelink HARQ cache of the road HARQ process. 5. The method according to claim 2, wherein the first terminal transmits the second data packet on the second side link resource according to the HARQ parameter of the second side link resource ,include: The NDI indicates new transmission, and the HARQ process number is associated with the process number of the first sidelink HARQ process, and the value of the first variable of the first sidelink HARQ process is the first parameter value, the first terminal transmits the second data packet on the second sidelink resource; Or, in a case where the NDI indicates new transmission, the first terminal transmits the second data packet on the second side link resource. 6. The method of claim 2, wherein, When the NDI indicates retransmission, and the HARQ process number is associated with the process number of the first sidelink HARQ process, and the value of the first variable associated with the first sidelink HARQ process number is the first In the case of two parameter values: the first terminal determines a third sidelink resource for retransmitting the first data packet; sending, by the first terminal, the first data packet to the second terminal through the third sidelink resource; Wherein, the second parameter value indicates that the second terminal has not correctly received the first data packet. 7. The method according to claim 6, further comprising: The first terminal receives a second sidelink resource from the network device, and the second sidelink resource is associated with the first sidelink HARQ process; The determination by the first terminal of a third sidelink resource for retransmitting the first data packet includes: The first terminal determines that the second side link resource is the third side link resource. 8. The method according to claim 6, wherein the first terminal determining a third sidelink resource for retransmitting the first data packet comprises: The first terminal determines the first side link resource as the third side link resource. 9. The method according to any one of claims 6-8, wherein the method further comprises: The first terminal receives indication information from the network device, where the indication information is used to instruct the first terminal to determine the third sidelink resource in a first manner or in a second manner; Wherein, the first manner is: the first terminal determines the second sidelink resource reallocated by the network device to the first terminal as the third sidelink resource; The second way is: the first terminal determines the first side link resource as the third side link resource. 10. A communication device, characterized in that it comprises: a transceiver, where the first terminal receives the second sidelink resource sent by the network device; A processor, configured to ignore the second side link resource or transmit a second data packet on the second side link resource according to the HARQ parameter of the second side link resource. 11. The device according to claim 10, wherein the HARQ parameters of the second side link resource include a new data indication NDI and a HARQ process number, and the processor is specifically configured to indicate in the NDI retransmission, and the HARQ process number is associated with the process number of the first sidelink HARQ process, and the value of the first variable associated with the first sidelink HARQ process is the first parameter value, ignore the second sidelink resource; Wherein, the first parameter value indicates that the second terminal correctly receives the first data packet of the first sidelink HARQ process sent by the first terminal. 12. The device according to claim 10, wherein the HARQ parameters of the second side link resource include a new data indication NDI and a HARQ process number, and the processor is specifically configured to indicate when the NDI indicates retransmission, and the HARQ process number is associated with the process number of the first sidelink HARQ process, and the HARQ cache of the first sidelink HARQ process is empty, ignore the second sidelink road resources. 13. The device according to claim 12, wherein the processor is further configured to: if the first data packet of the first sidelink HARQ process sent by the transceiver to the second terminal has been If it is successfully received by the second terminal, the HARQ cache of the first sidelink HARQ process is cleared. 14. The device according to claim 11, wherein the processor is further configured to, according to the HARQ parameters of the second sidelink resource, transmit Transmitting the second data packet on the path resources, including: Used when the NDI indicates a new transmission, and the HARQ process number is associated with the process number of the first sidelink HARQ process, and the value of the first variable of the first sidelink HARQ process is first parameter value, transmitting, by the transceiver, the second data packet on the second sidelink resource; Or, when the NDI indicates new transmission, the transceiver transmits the second data packet on the second side link resource. 15. The device according to any one of claims 11, wherein the NDI indicates retransmission, and the HARQ process number is associated with the process number of the first sidelink HARQ process, and the When the value of the first variable associated with the first sidelink HARQ process is the second parameter value: the processor is further configured to determine a third sidelink for retransmitting the first data packet resource; The transceiver is further configured to send the first data packet to the second terminal through the third sidelink resource; Wherein, the second parameter value indicates that the second terminal has not correctly received the first data packet. 16. The apparatus according to claim 15, wherein the transceiver is further configured to receive a second sidelink resource from the network device, the second sidelink resource and the The first sidelink HARQ process association; The processor is specifically configured to determine that the second sidelink resource is the third sidelink resource. 17. The apparatus according to claim 15, wherein the processor is specifically configured to determine the first sidelink resource as the third sidelink resource. 18. The device according to any one of claims 15-17, wherein the transceiver is further configured to receive indication information from the network device, the indication information is used to indicate the adoption of the first method or The second way is to determine the third sidelink resource; Wherein, the first manner is: determining the second sidelink resource reallocated by the network device to the apparatus as the third sidelink resource; The second manner is: determining the first side link resource as the third side link resource. 19. A chip, characterized in that the chip includes at least one processor and a communication interface, the communication interface is coupled to the at least one processor, and the at least one processor is used to run computer programs or instructions to realize The method for processing sidelink resources according to any one of claims 1-9, wherein the communication interface is used to communicate with other modules other than the chip. 20. A computer-readable storage medium, characterized in that instructions are stored in the computer-readable storage medium, and when the instructions are executed, the processing side described in any one of claims 1-9 is implemented method of link resource. 21. A communication system, comprising: the communication device and network equipment according to any one of claims 10-18.

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