CN115765936A

CN115765936A - Method, device and system for processing sidelink resources

Info

Publication number: CN115765936A
Application number: CN202211247359.XA
Authority: CN
Inventors: 徐海博; 肖潇; 魏冬冬; 王君; 王键
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2019-08-16
Filing date: 2019-08-16
Publication date: 2023-03-07
Also published as: WO2021031912A1; CN112398596A; CN112398596B; CN116192343A

Abstract

The embodiment of the application provides a method, a device and a system for processing sidelink resources, and relates to the technical field of communication. The method and the device are used for processing the allocated side link resource for retransmitting the data packet under the condition that the first terminal does not send the HARQ information to the network equipment. The first terminal determines that the confirmation information of the first side-link hybrid automatic repeat request HARQ process is not sent to the network equipment at the first moment; the confirmation information is used for indicating whether the second terminal correctly receives a first data packet of a first side link HARQ process sent by the first terminal to the second terminal on the first side link resource; the first terminal determines a second sidelink resource; the HARQ parameters of the second sidelink resource comprise a New Data Indication (NDI) and a HARQ process number; and under the condition that the confirmation information indicates that the second terminal correctly receives the first data packet, the first terminal processes the second sidelink resource according to the HARQ parameter. The scheme can be suitable for the fields of unmanned driving, automatic driving, auxiliary driving, intelligent driving, internet driving, intelligent internet driving, automobile sharing, artificial intelligence and the like.

Description

Method, device and system for processing sidelink resources

Technical Field

The present invention relates to the field of communications technologies, and in particular, to a method, an apparatus, and a system for processing sidelink resources.

Background

In a Long Time Evolution (LTE) system or a New Radio (NR) system, a communication interface between terminals may be referred to as a PC5 interface. The PC5 interface is generally used in a vehicle-to-all (V2X) or D2D scenario where direct communication between devices is possible. On the PC5 interface, the TX terminal may transmit sidelink data to the RX terminal over 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 (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 may send the HARQ information to the network device, so that when the network device determines that the sidelink data is not correctly received according to the HARQ information, the TX terminal is reallocated sidelink resources for retransmitting the sidelink data. And under the condition that the network equipment determines that the sidelink data is correctly received according to the HARQ information, the network equipment allocates a sidelink resource for transmitting other sidelink data to the TX terminal.

However, for the case that the TX terminal may not be able to transmit the HARQ information to the network device or the network device may not be able to receive the HARQ information, how the TX terminal processes the subsequent HARQ process is not described in the prior art.

Disclosure of Invention

The embodiment of the application provides a method, a device and a system for transmitting sidelink resources, which are used for processing the distributed sidelink resources for retransmitting data packets under the condition that a first terminal does not transmit HARQ information to network equipment.

In order to achieve the above purpose, the embodiments of the present application provide the following technical solutions:

in a first aspect, an embodiment of the present application provides a method for processing sidelink resources, including: the first terminal determines that acknowledgement information of a first sidelink hybrid automatic repeat request (HARQ) process is not sent to the network equipment at a first moment. The acknowledgement 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 second sidelink resources. And under the condition that the confirmation information indicates that the second terminal correctly receives the first data packet, the first terminal processes the second sidelink resource according to the HARQ parameter of the second sidelink resource. Wherein the HARQ parameter of the second sidelink resource comprises a new data indication NDI and a HARQ process number.

In the method, the first terminal may determine that acknowledgement information is not sent to the network device at the first time, and the acknowledgement information indicates that the second terminal correctly receives the first data packet, if the first terminal receives the second sidelink resource again. Since the HARQ parameter of the second sidelink resource comprises the NDI indication. The NDI indication is typically used to indicate a retransmission or a new transmission, when this occurs, the first terminal may process the second sidelink resource according to 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 and unnecessary feedback of the second terminal can be avoided by processing the second sidelink resource.

With reference to the first aspect, in a first possible implementation manner of the first aspect, the processing, by the first terminal, the second sidelink resource according to the HARQ parameter of the second sidelink resource includes: and the first terminal transmits a second data packet on the second sidelink resource according to the HARQ parameter of the second sidelink resource. This facilitates the first terminal to make a new transmission using the second sidelink resource if the first data packet is received correctly.

With reference to the first aspect or the first possible implementation manner of the first aspect, in the first possible implementation manner of the first aspect, the processing, by the first terminal, the second sidelink resource according to the HARQ parameter of the second sidelink resource includes: and the first terminal ignores the second side link resource according to the HARQ parameter of the second side link resource. This facilitates avoiding retransmission on the second sidelink resource in the event that the first data packet is received correctly.

With reference to the first aspect to the second possible implementation manner of the first aspect, in a third possible implementation manner of the first aspect, the HARQ parameter further includes a HARQ process number, and the method provided in the embodiment of the present application further includes: the first sidelink HARQ process is associated with a first variable, and the 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 incorrectly receives the first data packet. The first terminal ignores the second sidelink resource according to the HARQ parameter of the second sidelink resource, and the method includes: and under the condition that the NDI indicates retransmission, 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 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 resources are used for retransmitting the first data packet, but since the first data packet has been correctly received by the second terminal, the first terminal may ignore the second sidelink resources.

With reference to the first aspect to the third possible implementation manner of the first aspect, in a fourth possible implementation manner of the first aspect, the ignoring the second sidelink resource by the first terminal according to the HARQ parameter of the second sidelink resource includes: and under the condition that the NDI indicates retransmission, 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 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 for retransmitting the first data packet, but since the HARQ buffer of the first sidelink HARQ process is empty, the first terminal may ignore the second sidelink resource.

With reference to the first aspect to the fourth possible implementation manner of the first aspect, in a fifth possible implementation manner of the first aspect, the method provided in the embodiment of the present application further includes: and the first terminal determines that the first data packet is successfully received by the second terminal, and clears the HARQ buffer of the first sidelink HARQ process.

With reference to the first aspect to the fifth possible implementation manner of the first aspect, in a sixth possible implementation manner of the first aspect, the transmitting, by the first terminal, the second data packet on the second sidelink resource according to the HARQ parameter of the second sidelink resource includes: and under the conditions that the NDI indicates new transmission, 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 a second data packet on the second sidelink resource. This allows the first terminal to transmit the second data packet on the second sidelink resource if the second sidelink resource is used for new transmission, upon determining that the first data packet has been successfully received.

With reference to the first aspect to the sixth possible implementation manner of the first aspect, in a seventh possible implementation manner of the first aspect, the transmitting, by the first terminal, the second data packet on the second sidelink resource according to the HARQ parameter of the second sidelink resource includes: the first terminal transmits a second data packet on the second sidelink resource if the NDI indicates a new transmission.

With reference to the first aspect to the seventh possible implementation manner of the first aspect, in an eighth possible implementation manner of the first aspect, the determining, by the first terminal, that acknowledgement information is not sent to the network device at the first time includes: the first terminal determines that the time for sending the confirmation information and the time for sending the first message by the first terminal are both the first time. And under the condition that the priority of the physical uplink channel carrying the confirmation information is lower than that of the first message or the priority of the physical uplink channel carrying the confirmation information is lower than that of the side-link channel carrying the first message, the first terminal determines that the confirmation information is not sent to the network equipment at the first moment. Since the time for sending the acknowledgement information is the same as the time for sending the first message by the first terminal, the time for sending the acknowledgement information conflicts with the time for sending the first message by the first terminal, and the priority of the physical uplink channel carrying the acknowledgement information is lower than the priority of the first message or the priority of the sidelink channel carrying the first message, the first terminal may discard that the acknowledgement information is not sent to the network device at the first time.

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

With reference to the first aspect to the ninth possible implementation manner of the first aspect, in a tenth possible implementation manner of the first aspect, the physical uplink channel is a physical uplink control channel, the first message is a sidelink SL media access control MAC protocol data unit PDU, the sidelink channel carrying the first message is a sidelink shared channel SL-SCH, and the first terminal determines that the acknowledgment information is not sent to the network device at the first time according to the priority of the physical uplink channel carrying the acknowledgment information and the priority of the sidelink channel carrying the first message, including: and under the condition that the priority of the physical uplink control channel carrying the confirmation information at the first moment is lower than the priority of the physical side link shared channel PSSCH mapped by the side link shared channel, the first terminal determines that the confirmation information is not transmitted to the network equipment at the first moment.

With reference to the first aspect to the tenth possible implementation manner of the first aspect, in an eleventh possible implementation manner of the first aspect, a priority of a sidelink logical channel with a highest priority in SL MAC PDUs corresponding to the acknowledgement information is lower than a priority of a sidelink logical channel with a highest priority in SL MAC PDUs transmitted on the SL-SCH, and the first terminal determines that the priority of a physical uplink control channel carrying the acknowledgement information is lower than a priority of a PSSCH mapped by the SL-SCH carrying the SL MAC PDU.

With reference to the first aspect to the eleventh possible implementation manner of the first aspect, in a twelfth possible implementation manner of the first aspect, the physical uplink channel is a physical uplink shared channel PUSCH, the first message is a sidelink SL media 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 does not send the acknowledgement information to the network device at the first moment according to the priority of the uplink channel carrying the acknowledgement information and the priority of the sidelink channel carrying the first message, and the method comprises the following steps: the first terminal determines that acknowledgement information is not transmitted to the network device at a first time if the priority of the PUSCH is lower than the priority of the SL-SCH.

With reference to the first aspect to the twelfth possible implementation manner of the first aspect, in a thirteenth possible implementation manner of the first aspect, if the priority of the uplink logical channel with the highest priority in the MAC PDUs transmitted on the PUSCH is lower than the priority of the sidelink logical channel with the highest priority in the MAC PDUs transmitted on the SL-SCH, the first terminal determines that the priority of the PUSCH is lower than the priority of the SL-SCH.

With reference to the first aspect to the thirteenth possible implementation manner of the first aspect, in a fourteenth possible implementation manner of the first aspect, if the priority of the sidelink logical channel with the highest priority in the SL MAC PDU corresponding to the acknowledgement information and the priority of the uplink logical channel with the highest priority in the MAC PDU transmitted on the PUSCH are both lower 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 lower than the priority of the SL-SCH.

With reference to the first aspect to the fourteenth possible implementation manner of the first aspect, in a fifteenth possible implementation manner of the first aspect, the method provided in an embodiment of the present application further includes: and under the condition that 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, the first terminal determines to send the confirmation information to the network equipment at the first moment.

In a second aspect, an embodiment of the present application provides a method for processing sidelink resources, including: the first terminal determines that acknowledgement information of a first sidelink hybrid automatic repeat request, HARQ, process is not sent to the network device at a first time. The acknowledgement 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 case the acknowledgement information indicates that the second terminal did not correctly receive the first data packet, the first terminal determines a third sidelink resource for retransmitting the first data packet. The first terminal sends a first data packet to the second terminal through the third sidelink resource.

The embodiment of the present application provides a method for processing sidelink resources, in which a first terminal may determine a third sidelink resource for retransmitting a first data packet by determining that acknowledgement information is not sent to a network device at a first time and the acknowledgement information indicates that a second terminal does not correctly receive the first data packet. The first data packet is then transmitted to the second terminal on the third side link resource. This may improve the reliability of sidelink transmissions.

With reference to the second aspect, in a first possible implementation manner of the second aspect, in a possible implementation manner, the determining, by the first terminal, a third side link resource used for retransmitting the first data packet includes: the first terminal receives a second sidelink resource from the network device, wherein the second sidelink resource is associated with the first sidelink HARQ process. The first terminal determines the second sidelink resource as a third sidelink resource. Correspondingly, the sending, by the first terminal, the first data packet to the second terminal through the third sidelink resource includes: the first terminal sends a first data packet to the second terminal at the second sidelink resource.

With reference to the second aspect or the first possible implementation manner of the second aspect, in a second possible implementation manner of the second aspect, the determining, by the first terminal, a third side uplink resource for retransmitting the first data packet includes: the first terminal determines the first sidelink resource as a third sidelink resource. Correspondingly, the sending, by the first terminal, the first data packet to the second terminal through the third sidelink resource includes: the first terminal sends a first data packet to the second terminal through the first sidelink resource. This facilitates retransmission of the first data packet by the first terminal using the first sidelink resource from which the first data packet was previously sent.

With reference to the second aspect to the second possible implementation manner of the second aspect, in a third possible implementation manner of the second aspect, the sending, by the first terminal, the first data packet to the second terminal through the third sidelink resource includes: the first terminal sends the first data packet to the second terminal by using the first sidelink resource at the second time, and the second time is obtained by the first time and the preset deviation value.

With reference to the second aspect to the third possible implementation manner of the second aspect, in a fourth possible implementation manner of the second aspect, the method provided in the embodiment of the present application further includes: the first terminal receives indication information from the network device, wherein the indication information is used for indicating the first terminal to determine the third side link resource in the first mode or the second mode. Wherein, the first mode is as follows: and the first terminal determines the second sidelink resource reallocated by the network equipment for the first terminal as the third sidelink resource. The second mode is as follows: the first terminal determines the first sidelink resource as a third sidelink resource.

In the second aspect, the manner in which the first terminal determines that the acknowledgement information is not sent to the network device at the first time may refer to the relevant description in the first aspect, and details are not described here again.

In a third aspect, the present application provides a communication apparatus, which may implement the method in the first aspect or any possible implementation manner of the first aspect, and therefore may also implement the beneficial effects in the first aspect or any possible implementation manner of the first aspect. The communication device may be the first terminal, or may be 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 in the first terminal. The device can realize the method through software, hardware or corresponding software executed by hardware.

An example, the communications apparatus, comprising: and a communication unit for transceiving information. A processing unit, configured to determine that the communication unit does not perform an action of sending acknowledgement information of the first sidelink HARQ process to the network device at the first time. The acknowledgement 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. A processing unit further configured to determine a second sidelink resource. The processing unit is further configured to process the second sidelink resource according to the HARQ parameter of the second sidelink resource, in case that the acknowledgement information indicates that the second terminal correctly receives the first data packet. Wherein the HARQ parameter of the second sidelink resource comprises 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, according to the HARQ parameter of the second sidelink resource, process the second sidelink resource as: for transmitting the second data packet on the second sidelink resource according to the HARQ parameter of the second sidelink resource.

With reference to the third aspect or the first possible implementation manner of the third aspect, in a second possible implementation manner of the third aspect, the processing unit is configured to, according to the HARQ parameter of the second sidelink resource, process the second sidelink resource as: and the second side link resource is ignored according to the HARQ parameter of the second side link resource.

With reference to the third aspect to the second possible implementation manner of the third aspect, in a third possible implementation manner of the third aspect, the HARQ parameter further includes a HARQ process number, the first sidelink 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 incorrectly receives the first data packet. A processing unit, configured to ignore the second sidelink resource according to the HARQ parameter of the second sidelink resource: and the second side link resource is ignored when the NDI indicates retransmission, the HARQ process number is the process number of the first side link HARQ process, and the value of the first variable is the first parameter value.

With reference to the third aspect to the third possible implementation manner of the third aspect, in a fourth possible implementation manner of the third aspect, the processing unit is configured to, when the NDI indicates the retransmission, and the HARQ process number is a process number of the first sidelink HARQ process, and an HARQ buffer of the first sidelink HARQ process is empty, specifically, to ignore the second sidelink resource.

With reference to the third aspect 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, and clear an HARQ buffer of the first sidelink HARQ process.

With reference to the third aspect 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, transmit the second data packet on the second sidelink resource, where the transmitting is to: and the second data packet is transmitted on the second sidelink resource under the condition that the NDI indicates new transmission, 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.

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, transmit the second data packet on the second sidelink resource, where the transmitting is to: for transmitting a second data packet on a second sidelink resource if the NDI indicates a 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 step of determining that the communication unit does not perform the action of sending the acknowledgement information to the network device at the first time is specifically: and the time for determining that the time for sending the confirmation information and the time for sending the first message by the first terminal are both the first time. And in the case that the priority of the physical uplink channel carrying the acknowledgement information is lower than the priority of the first message, or the priority of the physical uplink channel carrying the acknowledgement information is lower than the priority of the sidelink channel carrying the first message, determining that the communication unit does not perform the action of sending the acknowledgement information to the network equipment at the first moment.

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

With reference to the third aspect to the tenth possible implementation manner of the third aspect, in an eleventh possible implementation manner of the third aspect, the physical uplink channel is a physical uplink control channel, the first message is a sidelink SL media access control MAC protocol data unit PDU, the sidelink channel carrying the first message is a sidelink shared channel SL-SCH, and the processing unit is configured to determine, according to the priority of the physical uplink channel carrying the acknowledgement information and the priority of the sidelink channel carrying the first message, that the communication unit does not send the acknowledgement information to the network device at the first time is: and the communication unit is used for determining that the confirmation information is not transmitted to the network equipment at the first moment when the priority of the physical uplink control channel carrying the confirmation information at the first moment is lower than the priority of the physical side link shared channel PSSCH mapped by the side link shared channel.

With reference to the third aspect to the eleventh possible implementation manner of the third aspect, in a twelfth possible implementation manner of the third aspect, a priority of a sidelink logical channel with a highest priority in SL MAC PDUs corresponding to acknowledgement information is lower than a priority of a sidelink logical channel with a highest priority in SL MAC PDUs transmitted on the SL-SCH, and the processing unit is configured to determine that the priority of a physical uplink control channel carrying the acknowledgement information is lower than a priority of a PSSCH mapped to the SL-SCH carrying the SL MAC PDU.

With reference to the third aspect to the twelfth possible implementation manner of the third aspect, in a thirteenth possible implementation manner of the third aspect, the physical uplink channel is a physical uplink shared channel PUSCH, the first message is a sidelink SL media access control MAC protocol data unit PDU, and the sidelink channel carrying the first message is a sidelink shared channel SL-SCH. And the processing unit is used for determining that the communication unit does not send the acknowledgement information to the network equipment at the first moment according to the priority of the uplink channel carrying the acknowledgement information and the priority of the sidelink channel carrying the first message, and determining that the communication unit does not send the acknowledgement information to the network equipment at the first moment if the priority of the PUSCH is lower than the priority of the SL-SCH.

With reference to the third aspect to the thirteenth possible implementation manner of the third aspect, in a fourteenth possible implementation manner of the third aspect, if the priority of the uplink logical channel with the highest priority in the MAC PDUs transmitted on the PUSCH is lower than the priority of the sidelink logical channel with the highest priority in the MAC PDUs transmitted on the SL-SCH, 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 third aspect to the fourteenth possible implementation manner of the third aspect, in a fifteenth possible implementation manner of the third aspect, if the priority of the sidelink logical channel with the highest priority in the SL MAC PDU corresponding to the acknowledgement information and the priority of the uplink logical channel with the highest priority in the MAC PDU transmitted on the PUSCH are both lower than the priority of the sidelink logical channel with the highest priority in the MAC PDU transmitted on the SL-SCH, 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 third aspect to the fifteenth possible implementation manner of the third aspect, in a sixteenth possible implementation manner of the third aspect, the processing unit is further configured to send, by the communication unit, the acknowledgement information to the network device at the first time when a priority of a physical uplink channel carrying the acknowledgement information is higher than a priority of the first message, or a priority of a physical uplink channel carrying the acknowledgement information is higher than a priority of a sidelink channel carrying the first message.

For another example, an embodiment of the present application provides a communication apparatus, which may be a first terminal or a chip in the first terminal. When the communication device is a first terminal, the communication unit may be a transceiver or comprise one or more modules having a function of transceiving information, and the processing unit may be a processor or comprise one or more modules having processing capabilities. The communication device may further include a storage unit. The storage unit may be a memory. The memory unit is to store computer program code, the computer program code comprising instructions. The processing unit executes the instructions stored by the storage unit to enable the first terminal to implement the method for processing sidelink resources described in the first aspect or any one of the possible implementations of the first aspect. When the communication device is a chip within 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, or the like. The processing unit executes computer program code stored by a memory unit, which may be a memory unit within the chip (e.g., register, cache, etc.) or a memory unit within the first terminal that is external to the chip (e.g., read only memory, random access memory, etc.), to cause the first terminal to implement a method of processing sidelink resources as described in the first aspect or any one of the possible implementations of the first aspect.

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

In a fourth aspect, the present application provides a communication device that may implement the method of the first aspect or any possible implementation manner of the first aspect, and thus may also achieve the beneficial effects of the second aspect or any possible implementation manner of the second aspect. The communication device may be the first terminal, or may be 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 in the first terminal. The device can realize the method through software, hardware or corresponding software executed by hardware.

An example, the communications apparatus, comprising: a processing unit, configured to determine that acknowledgement information of a first sidelink hybrid automatic repeat request, HARQ, process is not sent to a network device at a first time. The acknowledgement 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 processing unit is further configured to determine a third sidelink resource for retransmission of the first data packet in case the acknowledgement information indicates that the first data packet was not correctly received by the second terminal. And the communication unit is used for sending 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 associated with the first sidelink HARQ process. The processing unit is further configured to determine that a third sidelink resource for retransmitting the first data packet is: for determining the second sidelink resource as the third sidelink resource. Correspondingly, the communication unit is configured to send the first data packet to the second terminal through the third sidelink resource as: for transmitting the first data packet to the second terminal at the second sidelink resource.

With reference to the fourth aspect or the first possible implementation manner of the fourth aspect, in a second possible implementation manner of the fourth aspect, the processing unit is further configured to determine that a third sidelink resource for retransmitting the first data packet is: the first sidelink resource is determined as a third sidelink resource. Correspondingly, the communication unit is configured to send the first data packet to the second terminal through the third sidelink resource as: for transmitting the first data packet to the second terminal over the first sidelink 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 first packet to the second terminal through the third sidelink resource, and is configured to send the first packet to the second terminal by using the first sidelink resource at the second time, where the second time is obtained by 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, where the indication information is used to indicate that the first terminal determines the third side uplink resource in the first manner or the second manner. Wherein, the first mode is as follows: and the first terminal determines the second sidelink resource reallocated by the network equipment for the first terminal as the third sidelink resource. The second mode is as follows: the first terminal determines the first sidelink resource as a third sidelink resource. Or the first terminal autonomously selects a third sidelink resource from a preconfigured sidelink resource pool.

In the fourth aspect, reference may be made to the relevant description in the third aspect for a manner in which the processing unit determines that the apparatus does not send the acknowledgement information to the network device at the first time, which is not described herein again.

For another example, an embodiment of the present application provides a communication device, where the communication device may be a first terminal or may be a chip in the first terminal. When the communication device is a first terminal, the communication unit may be a transceiver. The processing unit may be a processor. The communication device may further include a storage unit. The storage unit may be a memory. The memory unit is to store computer program code, the computer program code comprising instructions. The processing unit executes the instructions stored by the storage unit to cause the first terminal to implement a method of processing sidelink resources as described in the second aspect or any one of the possible implementations of the second aspect. When the communication device is a chip within 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, or the like. The processing unit executes computer program code stored by a memory unit, which may be a memory unit within the chip (e.g. a register, a cache memory, etc.) or a memory unit within the first terminal located outside the chip (e.g. a read-only memory, a random access memory, etc.), to cause the first terminal to implement a method of processing sidelink resources as described in the second aspect or any of the possible implementations of the second aspect.

In a fifth aspect, an embodiment of the present application provides a method for processing sidelink resources, including: the first terminal sends the confirmation information of the first sidelink hybrid automatic repeat request HARQ process to the network equipment at a first moment. The acknowledgement information is used to indicate the second terminal to correctly receive 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. And under the condition that the confirmation information indicates that the second terminal correctly receives the first data packet, the first terminal processes the second sidelink resource according to the HARQ parameter of the second sidelink resource. Wherein the HARQ parameter of the second sidelink resource comprises a new data indication NDI.

The scheme of the fifth aspect is applicable to a case where the first terminal sends acknowledgement information of the first sidelink hybrid automatic repeat request HARQ process to the network device, but the network device does not receive the acknowledgement information.

With reference to the fifth aspect, in a first possible implementation manner of the fifth aspect, the processing, by the first terminal, the second sidelink resource according to the HARQ parameter of the second sidelink resource includes: and the first terminal transmits a second data packet on the second sidelink resource according to the HARQ parameter of the second sidelink resource.

With reference to the fifth aspect or the first possible implementation manner of the fifth aspect, in a second possible implementation manner of the fifth aspect, the processing, by the first terminal, the second sidelink resource according to the HARQ parameter of the second sidelink resource includes: and the first terminal ignores the second sidelink resource according to the HARQ parameter of the second sidelink resource.

With reference to the fifth aspect to the second possible implementation manner of the fifth aspect, in a third possible implementation manner of the fifth aspect, the HARQ parameter further includes a HARQ process number, and the method provided in the embodiment of the present application further includes: the first sidelink HARQ process is associated with a first variable, and the 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 incorrectly receives the first data packet. The first terminal ignores the second sidelink resource according to the HARQ parameter of the second sidelink resource, including: and under the condition that the NDI indicates retransmission, the HARQ process number is the process number of the HARQ process of the first sidelink, and the value of the first variable is the first parameter value, the first terminal ignores the resource of the second sidelink.

With reference to the fifth aspect to the third possible implementation manner of the fifth aspect, in a fourth possible implementation manner of the fifth aspect, the ignoring the second sidelink resource by the first terminal according to the HARQ parameter of the second sidelink resource includes: and under the condition that the NDI indicates retransmission, 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 terminal ignores the second sidelink resource.

With reference to the fifth aspect to the fourth possible implementation manner of the fifth aspect, in a fifth possible implementation manner of the fifth aspect, the method provided in the embodiment of the present application further includes: and the first terminal determines that the first data packet is successfully received by the second terminal, and clears the HARQ buffer of the first sidelink HARQ process.

With reference to the fifth aspect to the fifth possible implementation manner of the fifth aspect, in a sixth possible implementation manner of the fifth aspect, the transmitting, by the first terminal, the second data packet on the second sidelink resource according to the HARQ parameter of the second sidelink resource includes: and under the conditions that the NDI indicates new transmission, 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 a second data packet on the second sidelink resource.

With reference to the fifth aspect to the sixth possible implementation manner of the fifth aspect, in a seventh possible implementation manner of the fifth aspect, the transmitting, by the first terminal, the second data packet on the second sidelink resource according to the HARQ parameter of the second sidelink resource includes: the first terminal transmits a second data packet on the second sidelink resource if the NDI indicates a new transmission.

With reference to the seventh possible implementation manner of the fifth aspect to the fifth aspect, in an eighth possible implementation manner of the fifth aspect, the sending, by the first terminal, the confirmation information to the network device at the first time includes: the first terminal determines that the time for sending the confirmation information and the time for sending the first message by the first terminal are both the first time. And under the condition that 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 side link channel carrying the first message, the first terminal determines that the confirmation information is sent to the network equipment at the first moment. Since the time for sending the acknowledgement information is the same as the time for sending the first message by the first terminal, the time for sending the acknowledgement information conflicts with the time for sending the first message by the first terminal, and the priority of the physical uplink channel carrying the acknowledgement information is higher than the priority of the first message or the priority of the sidelink channel carrying the first message, the first terminal may send the acknowledgement information to the network device preferentially at the first time.

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

With reference to the fifth aspect to the eighth possible implementation manner of the fifth aspect, in a ninth possible implementation manner of the fifth aspect, the physical uplink channel is a physical uplink control channel, the first message is a sidelink SL media access control MAC protocol data unit PDU, the sidelink channel carrying the first message is a sidelink shared channel SL-SCH, and the first terminal has sent the acknowledgement information to the network device at the first time according to the priority of the physical uplink channel carrying the acknowledgement information and the priority of the sidelink channel carrying the first message, including: in the case that the priority of the physical uplink control channel carrying the acknowledgement information at the first time is higher than the priority of the physical sidelink shared channel PSSCH mapped by the sidelink shared channel, the first terminal has sent the acknowledgement information to the network equipment at the first time.

With reference to the fifth aspect to the ninth possible implementation manner of the fifth aspect, in a tenth possible implementation manner of the fifth aspect, a priority of a sidelink logical channel with a highest priority in SL MAC PDUs corresponding to the acknowledgement information is higher than a priority of a sidelink logical channel with a highest priority in SL MAC PDUs transmitted on the SL-SCH, and the first terminal determines that the priority of a physical uplink control channel carrying the acknowledgement information is higher than the priority of a PSSCH mapped by a SL-SCH carrying the SL MAC PDU.

With reference to the fifth aspect to the tenth possible implementation manner of the fifth aspect, in an eleventh possible implementation manner of the fifth aspect, the physical uplink channel is a physical uplink shared channel PUSCH, the first message is a sidelink SL media 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 sends the acknowledgement information to the network device at a first moment according to the priority of the uplink channel carrying the acknowledgement information and the priority of the sidelink channel carrying the first message, and the method comprises the following steps: if the priority of the PUSCH is higher than that of the SL-SCH, the first terminal sends acknowledgement information to the network equipment at a first time.

With reference to the fifth aspect to the eleventh possible implementation manner of the fifth aspect, in a twelfth possible implementation manner of the fifth aspect, if a priority of an uplink logical channel with a highest priority in the MAC PDUs transmitted on the PUSCH is higher than a priority of a sidelink logical channel with a highest priority in the MAC PDUs transmitted on the SL-SCH, the first terminal determines that the PUSCH has a higher priority than the SL-SCH.

With reference to the twelfth possible implementation manner of the fifth aspect, in a thirteenth possible implementation manner of the fifth aspect, if the priority of the sidelink logical channel with the highest priority in the SL MAC PDU corresponding to the acknowledgement information and the priority of the uplink logical channel with the highest priority in the MAC PDU transmitted on the PUSCH are both 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 the priority of the SL-SCH.

With reference to the fifth aspect to the thirteenth possible implementation manner of the fifth aspect, in a fourteenth possible implementation manner of the fifth aspect, the method provided in an embodiment of the present application further includes: and under the condition that the priority of the physical uplink channel carrying the confirmation information is lower than that of the first message or the priority of the physical uplink channel carrying the confirmation information is lower than that of the side link channel carrying the first message, the first terminal determines to send the first message to the network equipment at the first moment.

In a sixth aspect, an embodiment of the present application provides a method for processing sidelink resources, including: the first terminal sends the confirmation information of the first sidelink hybrid automatic repeat request HARQ progress to the network equipment at a first moment. The acknowledgement information is used to indicate that the second terminal did not correctly receive 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 sidelink resource from the network device, the first terminal determines the first sidelink resource as a sidelink resource for retransmitting the first data packet. And the first terminal retransmits the first data packet to the second terminal through the first sidelink resource.

In the method, the first terminal may determine to send acknowledgement information to the network device at the first time, where the acknowledgement information is used to indicate that the second terminal did not correctly receive the first data packet. But if the first terminal does not receive the second sidelink resource from the network device, it may indicate that the network device does not receive the acknowledgement indicating that the second terminal did not correctly receive the first data packet, and therefore, the first terminal may retransmit the first data packet using the first sidelink resource. This ensures reliability of sidelink transmissions.

With reference to the sixth aspect, in a first possible implementation manner of the sixth aspect, the retransmitting, by the first terminal, the first data packet to the second terminal through the first sidelink resource includes: and the first terminal sends the first data packet to the second terminal again by using the first sidelink resource at a second moment, wherein the second moment is obtained by the first moment and a preset deviation value.

In the sixth aspect, for a specific process in which the first terminal sends the acknowledgement information of the first sidelink HARQ process to the network device at the first time, reference may be made to the description in the fifth aspect, and details are not described here again.

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

An example, the communications apparatus, comprising: a processing unit, configured to determine that a communication unit of the communication apparatus sends acknowledgement information of a first sidelink hybrid automatic repeat request, HARQ, process to a network device at a first time. The acknowledgement information is used to instruct the second terminal to correctly receive the first data packet of the first sidelink HARQ process sent by the communication unit to the second terminal on the first sidelink resource. And the processing unit is used for processing the second sidelink resource according to the HARQ parameter of the second sidelink resource under the condition that the communication unit receives the second sidelink resource from the network equipment and the confirmation information indicates that the second terminal correctly receives the first data packet. Wherein the HARQ parameter of the second sidelink resource includes a new data indication NDI and a HARQ process number.

The aspect of the seventh aspect is applicable to a case where the communication unit of the communication apparatus transmits acknowledgement information of the first sidelink HARQ process to the network device, but the network device does not receive the acknowledgement 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 an HARQ parameter of the second sidelink resource, and the processing unit is configured to: for transmitting the second data packet on the second sidelink resource according to the HARQ parameter of the second sidelink resource.

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, according to the HARQ parameter of the second sidelink resource, process the second sidelink resource as: and the second side link resource is ignored according to the HARQ parameter of the second side link resource.

With reference to the seventh aspect to the second possible implementation manner of the seventh aspect, in a third possible implementation manner of the seventh aspect, the HARQ parameter further includes a HARQ process number, the first sidelink 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 incorrectly receives the first data packet. And the processing unit is used for ignoring the second sidelink resource under the condition that the NDI indicates retransmission, the HARQ process number is the process number of the HARQ process of the first sidelink and the value of the first variable is the first parameter value.

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, according to the HARQ parameter of the second sidelink resource, ignore the second sidelink resource: and the second side link resource is ignored when the NDI indicates retransmission, the HARQ process number is the process number of the first side link HARQ process, and the HARQ buffer of the first side link HARQ process is empty.

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, and clear an 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, transmit the second packet on the second sidelink resource, as: and the second data packet is transmitted on the second sidelink resource under the condition that the NDI indicates new transmission, 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.

With reference to the seventh aspect to the sixth possible implementation manner of the seventh aspect, in a seventh possible implementation manner of the seventh aspect, the communication unit is configured to, according to the HARQ parameter of the second sidelink resource, transmit the second data packet on the second sidelink resource, where the transmitting is to: for transmitting a second data packet on a second sidelink resource if the NDI indicates a new transmission.

With reference to the seventh possible implementation manner of the seventh aspect to the seventh aspect, in an eighth possible implementation manner of the seventh aspect, the processing unit is configured to determine that a time when the acknowledgement information is sent and a time when the apparatus sends the first message are both the first time. The processing unit is further configured to determine that the apparatus sends the acknowledgement information to the network device at the first time, when the priority of the physical uplink channel carrying the acknowledgement information is higher than the priority of the first message, or the priority of the physical uplink channel carrying the acknowledgement information is higher than the priority of the sidelink channel carrying the first message.

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 that is sent by the apparatus to the network device in a random access process.

With reference to the seventh to ninth possible implementation manners of the seventh aspect, in a tenth possible implementation manner of the seventh aspect, 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, the sidelink channel carrying the first message is a sidelink shared channel SL-SCH, and the processing unit is configured to determine, according to a priority of the physical uplink channel carrying the acknowledgement information and a priority of the sidelink channel carrying the first message, that the apparatus is to transmit the acknowledgement information to the network device at the first time, and determine that the apparatus is to transmit the acknowledgement information to the network device at the first time when the priority of the physical uplink control channel carrying the acknowledgement information at the first time is higher than the priority of the physical sidelink shared channel PSSCH mapped by the sidelink shared channel.

With reference to the seventh aspect to the tenth possible implementation manner of the seventh aspect, in an eleventh possible implementation manner of the seventh aspect, a priority of a sidelink logical channel with a highest priority in SL MAC PDUs corresponding to the acknowledgement information is higher than a priority of a sidelink logical channel with a highest priority in SL MAC PDUs transmitted on the SL-SCH, and the processing unit is configured to determine that the priority of a physical uplink control channel carrying the acknowledgement information is higher than a priority of a PSSCH mapped by the SL-SCH carrying the SL MAC PDU.

With reference to the seventh aspect to the eleventh possible implementation manner of the seventh aspect, in a twelfth possible implementation manner of the seventh aspect, the physical uplink channel is a physical uplink shared channel PUSCH, the first message is a sidelink SL media access control MAC protocol data unit PDU, and the sidelink channel carrying the first message is a sidelink shared channel SL-SCH. A processing unit, configured to determine, according to a priority of an uplink channel carrying acknowledgement information and a priority of a sidelink channel carrying a first message, that the apparatus sends acknowledgement information to the network device at a first time, specifically: and if the priority of the PUSCH is higher than that of the SL-SCH, the device is used for determining that the device sends the confirmation information to the network equipment at the first moment.

With reference to the twelfth possible implementation manner of the seventh aspect, in a thirteenth possible implementation manner of the seventh aspect, if the priority of the uplink logical channel with the highest priority in the MAC PDUs transmitted on the PUSCH is higher than the priority of the sidelink logical channel with the highest priority in the MAC PDUs transmitted on the SL-SCH, 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 seventh to thirteenth possible implementation manners of the seventh aspect, in a fourteenth possible implementation manner of the seventh aspect, if the priority of the sidelink logical channel with the highest priority in the SL MAC PDU corresponding to the acknowledgement information and the priority of the uplink logical channel with the highest priority in the MAC PDU transmitted on the PUSCH are both higher than the priority of the sidelink logical channel with the highest priority in the MAC PDU transmitted on the SL-SCH, 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 seventh aspect to the fourteenth possible implementation manner of the seventh aspect, in a fifteenth possible implementation manner of the seventh aspect, in a case that a priority of a physical uplink channel carrying the acknowledgement information is lower than a priority of the first message, or a priority of a physical uplink channel carrying the acknowledgement information is lower than a priority of a 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 time.

For another example, an embodiment of the present application provides a communication device, where the communication device may be a first terminal or may be a chip in the first terminal. When the communication device is a first terminal, the communication unit may be a transceiver. The processing unit may be a processor. The communication device may further include a storage unit. The storage unit may be a memory. The memory unit is to store computer program code, the computer program code comprising instructions. The processing unit executes the instructions stored by the storage unit to enable the first terminal to implement a method for processing sidelink resources as described in the fifth aspect or any one of the possible implementations of the fifth aspect. When the communication device is a chip within 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, or the like. The processing unit executes computer program code stored by a memory unit, which may be a memory unit within the chip (e.g. a register, a cache memory, etc.) or a memory unit within the first terminal that is external to the chip (e.g. a read-only memory, a random access memory, etc.), to cause the first terminal to implement a method of processing sidelink resources as described in the fifth aspect or any one of the possible implementations of the fifth aspect.

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

An example, the communications apparatus, comprising: a communication unit for transceiving information. And the processing unit is used for determining that the communication unit sends the confirmation information of the first sidelink HARQ process to the network equipment at the first moment. The acknowledgement information is used to indicate that the second terminal did not correctly receive 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 does not receive the second sidelink resource from the network device, the first sidelink resource is determined as a sidelink resource for retransmitting the first data packet. And the communication unit is used for sending the first data packet to the second terminal through the first sidelink 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, and specifically, the sending unit is configured to: and the communication unit is used for sending the first data packet to the second terminal by using the first sidelink resource at a second moment, and the second moment is obtained by the first moment and a preset deviation value.

For a specific process of the processing unit in the eighth aspect, to determine that the apparatus sends the acknowledgement information of the first sidelink HARQ process to the network device at the first time, reference may be made to the description in the sixth aspect, which is not described herein again.

For another example, an embodiment of the present application provides a communication device, where the communication device may be a first terminal or may be a chip in the first terminal. When the communication device is a first terminal, the communication unit may be a transceiver. The processing unit may be a processor. The communication device may further include a storage unit. The storage unit may be a memory. The memory unit is to store computer program code, the computer program code comprising instructions. The processing unit executes the instructions stored by the storage unit to cause the first terminal to implement a method for processing sidelink resources as described in the sixth aspect or any one of the possible implementations of the sixth aspect. When the communication device is a chip within 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, or the like. The processing unit executes computer program code stored by a memory unit, which may be a memory unit within the chip (e.g., register, cache, etc.) or a memory unit external to the chip within the first terminal (e.g., read only memory, random access memory, etc.), to cause the first terminal to implement a method of processing sidelink resources as described in the sixth aspect or any one of the possible implementations of the sixth aspect.

In a ninth aspect, embodiments of the present application provide a computer-readable storage medium, in which a computer program or instructions are stored, and when the computer program or instructions are run on a computer, the computer is caused to execute the method for processing sidelink resources as described in any one of the possible implementation manners of the first aspect to the first aspect.

In a tenth aspect, embodiments of the present application provide a computer-readable storage medium, in which a computer program or an instruction is stored, and when the computer program or the instruction runs on a computer, the computer is caused to execute the method for processing sidelink resources as described in any one of the possible implementation manners of the second aspect to the second aspect.

In an eleventh aspect, embodiments of the present application provide a computer-readable storage medium, in which a computer program or an instruction is stored, and when the computer program or the instruction runs on a computer, the computer is caused to execute the method for processing sidelink resources as described in any one of the possible implementation manners of the fifth aspect to the fifth aspect.

Twelfth, an embodiment of the present application provides a computer-readable storage medium, in which a computer program or an instruction is stored, and when the computer program or the instruction runs on a computer, the computer is caused to execute the method for processing sidelink resources as described in any one of the possible implementation manners of the sixth aspect to the sixth aspect.

In a thirteenth aspect, embodiments of the present application provide a computer program product comprising instructions that, when executed on a computer, cause the computer to perform a method of processing sidelink resources as described in the first aspect or in various possible implementations of the first aspect.

In a fourteenth aspect, the present application provides a computer program product comprising instructions which, when run on a computer, cause the computer to perform a method of processing sidelink resources as described in the second aspect or in various possible implementations of the second aspect.

In a fifteenth aspect, embodiments of the present application provide a computer program product comprising instructions that, when executed on a computer, cause the computer to perform a method of processing sidelink resources as described in the fifth aspect or in various possible implementations of the fifth aspect.

In a sixteenth aspect, the present application provides a computer program product comprising instructions which, when run on a computer, cause the computer to perform a method of processing sidelink resources as described in the various possible implementations of the sixth aspect or the sixth aspect.

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

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

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

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

In a twenty-first aspect, an embodiment of the present application provides a communication apparatus, which includes a processor and a storage medium, where the storage medium stores instructions that, when executed by the processor, implement a method for processing sidelink resources as described in the first aspect or various possible implementations of the first aspect.

In a twenty-second aspect, embodiments of the present application provide a communication device, which includes a processor and a storage medium, where the storage medium stores instructions that, when executed by the processor, implement a method for processing sidelink resources as described in the second aspect or various possible implementations of the second aspect.

In a twenty-third aspect, embodiments of the present application provide a communication apparatus, which includes a processor and a storage medium, where the storage medium stores instructions that, when executed by the processor, implement the method for processing sidelink resources as described in the fifth aspect or various possible implementations of the fifth aspect.

In a twenty-fourth aspect, an embodiment of the present application provides a communication apparatus, which includes a processor and a storage medium, where the storage medium stores instructions that, when executed by the processor, implement a method for processing sidelink resources as described in the sixth aspect or various possible implementations of the sixth aspect.

In a twenty-fifth aspect, the present embodiments provide a communication apparatus, which includes one or more modules, configured to implement the methods of the first, second, fifth, and sixth aspects, where the one or more modules may correspond to each step in the methods of the first, second, fifth, and sixth aspects.

In a twenty-sixth aspect, embodiments of the present application provide a chip, where the chip includes a processor and a communication interface, where the communication interface is coupled to the processor, and the processor is configured to execute a computer program or instructions to implement the first aspect or a method for processing sidelink resources described in various possible implementations of the first aspect. The communication interface is used for communicating with other modules outside the chip.

In a twenty-seventh aspect, embodiments of the present application provide a chip, where the chip includes a processor and a communication interface, where the communication interface is coupled to the processor, and the processor is configured to execute a computer program or instructions to implement the method for processing sidelink resources described in the second aspect or various possible implementations of the second aspect. The communication interface is used for communicating with other modules outside the chip.

In a twenty-eighth aspect, embodiments of the present application provide a chip comprising a processor and a communication interface, the communication interface being coupled to the processor, the processor being configured to execute a computer program or instructions to implement a method of processing sidelink resources as described in the fifth aspect or in various possible implementations of the fifth aspect. The communication interface is used for communicating with other modules outside the chip.

In a twenty-ninth aspect, embodiments of the present application provide a chip, where the chip includes a processor and a communication interface, the communication interface is coupled to the processor, and the processor is configured to execute a computer program or instructions to implement a method for processing sidelink resources described in the sixth aspect or various possible implementations of the sixth aspect. The communication interface is used for communicating with other modules outside the chip.

In particular, the chip provided in the embodiments of the present application further includes a memory for storing a computer program or instructions.

Any one of the above-provided apparatuses, computer storage media, computer program products, chips, or communication systems is configured to execute the above-provided corresponding methods, and therefore, the beneficial effects that can be achieved by the apparatuses, the computer storage media, the computer program products, the chips, or the communication systems can refer to the beneficial effects of the corresponding schemes in the above-provided corresponding methods, and are not described herein again.

Drawings

Fig. 1 is an architecture diagram of a communication system according to an embodiment of the present application;

fig. 2 is a schematic structural diagram of a communication device according to an embodiment of the present application;

fig. 3a to fig. 3d are schematic diagrams of feedback of acknowledgement information between a network device and a terminal;

fig. 4-9 are schematic flow charts illustrating a method for transmitting sidelink resources according to an embodiment of the present application;

fig. 10 is a schematic structural diagram of a communication device according to an embodiment of the present application;

fig. 11 is a schematic structural diagram of another communication device according to an embodiment of the present application;

fig. 12 is a schematic structural diagram of a chip according to an embodiment of the present application.

Detailed Description

In order to facilitate clear description of 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 identical items or similar items with substantially the same functions and actions. For example, the first terminal and the first terminal are only used for distinguishing different terminals, and the sequence order thereof is not limited. Those skilled in the art will appreciate that the terms "first," "second," etc. do not denote any order or quantity, nor do the terms "first," "second," etc. denote any order or importance.

It is noted that, in the present application, words such as "exemplary" or "for example" are used to mean exemplary, illustrative, or descriptive. Any embodiment or design described herein as "exemplary" or "e.g.," is not necessarily to be construed as preferred or advantageous over other embodiments or designs. Rather, use of the word "exemplary" or "such as" is intended to present concepts related in a concrete fashion.

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

The technical scheme of the application can be applied to various communication systems, such as: a Long Term Evolution (LTE) system, an LTE Frequency Division Duplex (FDD) system, an LTE Time Division Duplex (TDD) system, a Universal Mobile Telecommunications System (UMTS), a universal internet microwave access (WiMAX) communication system, a Public Land Mobile Network (PLMN) system, a device to device (D2D) network system or a machine to machine (M2M) network system, a future 5G communication system, and the like.

The network architecture and the service scenario described in the embodiment of the present application are for more clearly illustrating the technical solution of the embodiment of the present application, and do not form a limitation on the technical solution provided in the embodiment of the present application, and as a person of ordinary skill in the art knows that along with the evolution of the network architecture and the appearance of a new service scenario, the technical solution provided in the embodiment of the present application is also applicable to similar technical problems. In the embodiments of the present application, the method provided is applied to an NR system or a 5G network as an example for description.

Before describing the embodiments of the present application, first, terms related to the embodiments of the present application are described:

1) Sidelink (SL) means: defined for direct communication between terminals. I.e. a link between the terminal and the terminal that communicates directly without relaying through the base station.

2) The sidelink resource refers to: terminal 1 transmits the resource of sidelink information with terminal 2 on the sidelink.

3) The sidelink information is: the sidelink data or control information transmitted by any two terminals on the sidelink may also be referred to as a first data packet or a V2X service.

The technical solution in the present 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 transmitting sidelink resources provided by an embodiment of the present application is applied, and the communication system includes: one or more network devices (such as network device 10 shown in fig. 1), one or more terminals (such as first terminal 20, second terminal 30, third terminal 40 shown in fig. 1). In fig. 1, a terminal is taken as an example of a vehicle.

Wherein, the first terminal 20 communicates with the network device 10, and 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 may 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. Network device 10 may be connected to the core network. The core network may be a 4G core network (e.g., evolved Packet Core (EPC)) or a 5G core network (5G core, 5gc), or a core network in various future communication systems. And a Road Side Unit (RSU). The RSU may also provide various service information and data network access for each terminal in the system, for example, taking a terminal as a vehicle, for example, the RSU may also provide functions such as no-parking charging, in-vehicle entertainment and the like for each terminal in the system, which greatly improves traffic intelligence.

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

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

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

Wherein the network device 10 has a first transmission link with 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 for transmitting Uu traffic (information or data) transmitted 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 a sidelink, which may also be referred to as a first data packet or sidelink information. The first terminal 20 may transmit Uplink (UL) Uu traffic to the network device 10 on the Uu link, and may also receive Downlink (DL) Uu traffic sent by the network device 10 on the Uu link.

The interface through which the first terminal 20 and the second terminal 30 communicate directly may be interface 1. For example, interface 1 may be referred to as a PC5 interface, and may use a car networking dedicated frequency band (e.g., 5.9 GHz). The interface between the first terminal 20 and the network device 10 may be referred to as interface 2 (e.g., uu interface), and employs a cellular frequency band (e.g., 1.8 GHz). The PC5 interface is generally used in a V2X or D2D scenario where direct communication between devices is possible.

The names of the interface 1 and the interface 2 are merely examples, and the names of the interface 1 and the interface 2 are not limited in the embodiments of the present application.

As shown in fig. 1, fig. 1 illustrates a scenario provided by an embodiment of the present application, as shown in fig. 1, taking a first terminal 20 as a vehicle identified as X (abbreviated as vehicle X), if the vehicle X decides to perform a passing operation, the vehicle X may send a first data packet (for example, the first data packet may be a passing indication, and a current vehicle speed of the vehicle X (for example, 75 km/h)) in a dialog box 50 to a second terminal 30 (for example, a vehicle identified as Y (abbreviated as vehicle Y)) located in front of the vehicle X on a first sidelink resource, so that the vehicle Y decelerates to drive after receiving the current vehicle speed of X and the passing indication, so that the X safely passes. If vehicle Y receives X's current speed and an indication of a cut-in, vehicle Y may feed back to vehicle X the information of dialog box 60. After the vehicle X receives the information of the vehicle Y and determines that the vehicle Y correctly receives the overtaking instruction and the current vehicle speed of the vehicle X, the vehicle X may feed back ACK as the acknowledgement information to the network device 10, so that the network device 10 determines that the overtaking instruction sent to the vehicle Y on the first sidelink resource and the current vehicle speed of the vehicle X have been correctly received by the vehicle Y. However, since the timing at which the vehicle X feeds back the ACK to the network device 10 may collide with the random access message transmitted by the vehicle X, the vehicle X preferentially transmits the random access message to the network device 10 and abandons the ACK feedback to the network device 10.

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

In general, V2X traffic is transmitted on sidelink resources on sidelink, and Uu traffic is transmitted on Uu resources on Uu link.

There are two resource allocation manners for the first terminal 20 to obtain the sidelink, one is a resource allocation manner based on the scheduling of the network device 10, that is, the network device 10 schedules the sidelink resource for the first terminal 20. The first terminal 20 may transmit sidelink data or sidelink information to the second terminal 30 on sidelink resources. The other is an allocation manner that the first terminal 20 autonomously selects resources in the resource pool, that is, the first terminal 20 autonomously selects sidelink resources in the resource pool configured or preconfigured by the network device 10 through system messages or dedicated signaling, so as to transmit sidelink data or sidelink information to the second terminal 30 on the autonomously selected sidelink resources.

The first terminal 20 or the second terminal 30, which is a device having a wireless communication function, may be deployed on land, including indoors or outdoors, hand-held, or in a vehicle. And can also be deployed on the water surface (such as a ship and the like). And may also be deployed in the air (e.g., airplanes, balloons, satellites, etc.). A terminal, also referred to as a User Equipment (UE), a Mobile Station (MS), a Mobile Terminal (MT), and a terminal equipment, is a device that provides voice and/or data connectivity to a user. For example, the terminal includes a handheld device, a vehicle-mounted device, and the like having a wireless connection function. Currently, the terminal may be: mobile phone (mobile phone), tablet computer, notebook computer, palm computer, mobile Internet Device (MID), wearable device (e.g., smart watch, smart bracelet, pedometer, etc.), vehicle-mounted device (e.g., automobile, bicycle, electric vehicle, airplane, ship, train, high-speed rail, etc.), virtual Reality (VR) device, augmented Reality (AR) device, wireless terminal in industrial control (industrial control), smart home device (e.g., refrigerator, television, air conditioner, electric meter, etc.), smart robot, workshop device, wireless terminal in unmanned driving (self), wireless terminal in remote surgery (remote medical supply), wireless terminal in smart grid (smart grid), wireless terminal in transportation safety (transportation safety), wireless terminal in smart city (smart city), or wireless terminal in smart home (unmanned), such as unmanned aerial vehicle, hot balloon, etc. In a possible application scenario, the terminal device is a terminal device that often works on the ground, such as a vehicle-mounted device. In the present application, for convenience of description, a Chip disposed in the device, such as a System-On-a-Chip (SOC) Chip, a baseband Chip, or the like, or another Chip having a communication function may also be referred to as a terminal.

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

Vehicles can acquire road condition information or receive information services in time through vehicle-to-vehicle communication (V2V) or vehicle-to-infrastructure communication (V2I) (for example, infrastructure is Road Side Unit (RSU)), or vehicle-to-pedestrian communication (V2P) or vehicle-to-network communication (V2N), which can be collectively referred to as V2X communication (where X represents anything). The communication described above generally refers to a network used for V2X communication as an internet of vehicles.

When the various schemes described in the embodiments of the present application are applied to a V2X scene, the following fields may be applicable: unmanned driving (unmanned driving), automatic driving (automatic driving/ADS), assisted driving (driver assistance/ADAS), intelligent driving (Intelligent driving), internet driving (connected driving), intelligent internet driving (Intelligent network driving), and vehicle sharing (car sharing).

As an example, in the embodiment of the present application, the terminal may also be a wearable device. Wearable equipment can also be called wearable intelligent equipment, is the general term of equipment that uses wearable technique to carry out intelligent design, develop can dress to daily wearing, such as glasses, gloves, wrist-watch, dress and shoes. The wearable device may be worn directly on the body or may be a portable device integrated into the user's clothing or accessory. The wearable device is not only a hardware device, but also realizes powerful functions through software support, data interaction and cloud interaction. The generalized wearable smart device includes full functionality, large size, and can implement full or partial functionality without relying on a smart phone, such as: smart watches or smart glasses and the like, and only focus on a certain type of application functions, and need to be used in cooperation with other devices such as smart phones, such as various smart bracelets for physical sign monitoring, smart jewelry and the like.

The network device 10 is an entity that may be used in conjunction with the first terminal 20 to transmit or receive signals. For example, the network device may be an Access Point (AP) in a WLAN, and may also be an evolved Node B (eNB or eNodeB) in LTE, or a relay station or an access point, or a vehicle-mounted device, a wearable device, and a network device in a future 5G network or a network device in a future evolved PLMN network.

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

Fig. 2 shows a hardware structure diagram of a communication device according to an embodiment of the present disclosure. The hardware structures of the first terminal 20, the second terminal 30, and the network device 10 in the embodiment of the present application may refer to the structure shown in fig. 2. The communication device includes a processor 41, a communication link 44, and at least one transceiver (illustrated in fig. 2 as including transceiver 43 for exemplary purposes only).

Processor 41 may be a general-purpose Central Processing Unit (CPU), a microprocessor, an application-specific integrated circuit (ASIC), or one or more ics for controlling the execution of programs in accordance with the teachings of the present disclosure.

The communication link 44 may include a path for transmitting information between the aforementioned components.

The transceiver 43 may be any device for communicating with other devices or communication networks, such as an ethernet, a Radio Access Network (RAN), a Wireless Local Area Network (WLAN), etc.

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

The memory 42 may be, but is not limited to, a read-only memory (ROM) or other type of static storage device that may store static information and instructions, a Random Access Memory (RAM) or other type of dynamic storage device that may store information and instructions, an electrically erasable programmable read-only memory (EEPROM), a compact disk read-only memory (CD-ROM) or other optical disk storage, optical disk storage (including compact disk, laser disk, optical disk, digital versatile disk, blu-ray disk, etc.), magnetic disk storage media or other magnetic storage devices, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer. The memory may be separate and coupled to the processor via a communication line 44. The memory may also be integral to the processor.

The memory 42 is used for storing computer-executable instructions for executing the present application, and is controlled by the processor 41 to execute. The processor 41 is configured to execute computer-executable 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-executable instructions in the embodiments of the present application may also be referred to as application program codes, which are not specifically limited in the embodiments of the present application.

In particular implementations, processor 41 may include one or more CPUs, such as CPU0 and CPU1 of FIG. 2, for example, as an embodiment.

In particular implementations, the communication device may include multiple processors, such as processor 41 and processor 45 in fig. 2, as one embodiment. 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 (e.g., computer program instructions).

A method for transmitting sidelink resources according to the embodiment of the present application will be specifically described below with reference to fig. 4 to 5.

It should be noted that, in the following embodiments of the present application, names of messages between network elements or names of parameters in messages are only an example, and other names may also be used in a specific implementation, which is not specifically limited in this embodiment of the present application.

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

As shown in fig. 3a, on the Uu link, one method for ensuring reliability of data transmission between the terminal and the network device is HARQ retransmission of data. The basic process of HARQ for uplink data transmission on the Uu link is shown in fig. 3 a: 1. the network device 10 transmits a Physical Downlink Control Channel (PDCCH) to the first terminal 20, and the PDCCH schedules the first terminal 20 to transmit new uplink data. 2. The first terminal 20 transmits uplink data to the network device 10. 3. After receiving the uplink data, the network device 10 fails to decode the uplink data. The network device 10 sends a PDCCH to the first terminal 20, where the PDCCH is used to schedule the first terminal 20 to retransmit the uplink data that was not successfully decoded by the network device 10 in the above step. 4. The first terminal 20 determines a retransmission resource location according to the PDCCH and retransmits the uplink data on the retransmission resource.

As shown in fig. 3b, the basic HARQ process of downlink data transmission on Uu link: 1. the network device 10 transmits the downstream 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 NACK to the network device 10. 3. Network device 10 receiving the NACK retransmits the downlink data. So that the first terminal 20 re-receives downlink data on a new Physical Downlink Shared Channel (PDSCH) according to the retransmission indication. The network device 10 performs retransmission of the downlink data. 4. After receiving the downlink data, the first terminal 20 feeds back ACK to the network device 10 if decoding is successful.

The network device 10 performs retransmission of downlink data, including: the network device 10 indicates the resource location of the PDSCH through the PDCCH, and the PDSCH carries the retransmitted downlink data.

Currently, in the LTE system, the HARQ basic process of sidelink data transmission is shown in fig. 3 c: 1. the first terminal 20 sends sidelink data (including new and re-transmissions of data) to the second terminal 30. 2. The second terminal 30 decodes the side-link data. Since the first terminal 20 transmits the sidelink data in a broadcast manner in the current LTE system, the second terminal 30 does not transmit ACK/NACK feedback to the first terminal 20 no matter whether the second terminal 30 successfully decodes the sidelink data or not. Since the first terminal 20 does not receive the ACK fed back by the second terminal 30, it may misunderstand that the second terminal 30 is not successfully decoded, and in the subsequent process, the second terminal 30 may continue to retransmit the sidelink data to the second terminal 30 as in steps 2 to M, but since the second terminal 30 has successfully decoded the sidelink data, the second terminal 30 does not decode the retransmitted sidelink data any more. This may cause the first terminal 20 to repeatedly transmit sidelink data, resulting in a waste of sidelink resources.

In NR systems, sildelink supports unicast, multicast and broadcast transmissions. For unicast and multicast transmissions, retransmission mechanisms based on HARQ feedback are supported. Under the resource allocation mode scheduled by the network device 10, the HARQ process of the sidelink data transmission is as shown in fig. 3 d:

1. the network device 10 sends a PDCCH to the first terminal 20 to schedule a new transmission of sidelink data for the first terminal 20. 2. The first terminal 20 transmits the 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 NACK to the first terminal 20. 4. The first terminal 20 feeds back a NACK to the network device 10. 5. The network device 10 sends PDCCH to the first terminal 20, and schedules the first terminal 20 to resend to the second terminal 30 the sidelink data that the second terminal 30 did not successfully decode, i.e. sidelink data retransmission. 6. The first terminal 20 performs sidelink retransmission.

However, the first terminal 20 may not receive the acknowledgement information fed back by the second terminal 30, and at this time, the first terminal 20 may not determine whether the second terminal 30 correctly receives the sidelink data. And 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 acknowledgement information ACK/NACK of the Sidelink data transmission to the network device 10, a time collision or overlap with other transmissions may occur. For example, the time when the first terminal 20 sends the 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 first message sent by the first terminal 20 to the second terminal 30, and therefore may be referred to as collision. If a collision occurs, the first terminal 20 may discard sending ACK/NACK to the network device 10, so that the network device 10 may not receive ACK/NACK from the first terminal 20, and thus the network device 10 may not know whether the sidelink data sent by the first terminal 20 to the second terminal 30 is correctly received. If the network device 10 does not configure the first terminal 20 with retransmitted sidelink resources, sidelink data that was not correctly received may not be retransmitted. Or if the network device 10 blindly reallocates the sidelink resource for retransmission to the first terminal 20 without knowing whether the sidelink data transmitted by the first terminal 20 to the second terminal 30 is correctly received, but the sidelink data is correctly received by the second terminal 30, in this case, how the first terminal 20 handles the sidelink resource for retransmission is a problem to be solved.

Based on this, in the embodiment of the present application, in the case that it is determined that the acknowledgement information is not sent to the network device 10 at the first time 20 and indicates that the second terminal 30 correctly receives the first data packet, if the first terminal 20 receives the second sidelink resource for retransmitting the first data packet of the first sidelink HARQ process and new data retransmission (NDI) again. Since the NDI indication is typically used to indicate a retransmission or a new transmission, when this occurs, the first terminal 20 may process the second sidelink resources according to the 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 sidelink resource, and the first terminal can avoid unnecessary transmission by the first terminal 20 and unnecessary feedback by the second terminal 30 by ignoring the second sidelink resource or transmitting other data packets (e.g., the second data packet) than the first data packet.

An embodiment of the present application provides a method for processing sidelink resources, and an execution subject of the method is a first communication device. The first communication device may be the first terminal 20 or a chip disposed in the first terminal 20, and the second communication device in the method may be the second terminal 30 or a chip disposed in the second terminal 30, and the following embodiments take the first communication device as the first terminal 20 and the second communication device as the second terminal 30 as examples.

Fig. 4 illustrates a method for processing sidelink resources according to an embodiment of the present application, where the method includes:

step 401, the first terminal 20 determines that the acknowledgement information of the first sidelink HARQ process is not sent to the network device 10 at the first time 20. The acknowledgement 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 acknowledgement information may be HARQ information. The confirmation information may be: NACK or ACK. The ACK indicates that the second terminal 30 correctly received the first data packet. A 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 transmitted by the first terminal 20 to the second terminal 30 on the first sidelink resource through the sidelink. The sidelink refers to a sidelink between the first terminal 20 and the second terminal 30. The first sidelink HARQ process is a sidelink HARQ process for transmitting the first data packet in one or more sidelink HARQ processes of the first terminal 20.

It should be understood that, before step 401, the method provided in the embodiment of the present application further includes: the first terminal 20 sends a first data packet on the first sidelink resource to the second terminal 30. If the second terminal 30 correctly receives the first data packet, 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 acknowledgement information of the first sidelink HARQ process indicates: the acknowledgement information is used to reflect whether the first packet associated with the first sidelink HARQ process was received correctly.

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

In this embodiment, the first sidelink resource is a sidelink resource configured by the network device 10 for the first terminal 20 and used for transmitting the first data packet. Or the first sidelink resource is a sidelink resource selected by the first terminal 20 from the sidelink resource pool for transmitting the first data packet.

It is understood that the first packet may be a newly transmitted packet. The newly transmitted data packet is the data packet that is transmitted from the first terminal 20 to the second terminal 30 for the first time (the first time). Or the first data packet is a retransmission data packet. The retransmission packet is the packet transmitted by the first terminal 2 to the second terminal 30M times. In other words, the retransmission 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 for the first terminal 20. Or M is less than or equal to the maximum retransmission times of the first sidelink HARQ process.

The first time is a time when the first terminal 20 sends the acknowledgement information to the network device 10.

In this embodiment of the present application, that the first terminal does not send the acknowledgement information of the first sidelink HARQ process to the network device may also be understood as: the confirmation message cannot be transmitted or the first terminal 20 gives up sending the confirmation message to the network device 10.

Step 402, the first terminal 20 determines the second sidelink resource. Wherein the HARQ parameter of the second downlink resource includes a New Data Indicator (NDI).

Optionally, the HARQ parameter may further include a Process number (HARQ Process ID).

Illustratively, the second sidelink resource may be configured by the network device 10 to the first terminal 20. That is, in the case that the first terminal 20 does not send the acknowledgement information to the second terminal 30 at the first time, and the network device 10 does not receive the acknowledgement information, the network device 10 configures the second sidelink resource for the first terminal 20.

Illustratively, the network device 10 sends a PDCCH to the first terminal 20, where the PDCCH is used to schedule the first terminal 20 to retransmit the first data packet, and the PDCCH is further used to indicate a location of the second sidelink resource and a HARQ process number corresponding to the second sidelink resource. For example, downlink Control Information (DCI) carried by the PDCCH is used to schedule a SL Grant (Grant), and an NDI and an HARQ process ID corresponding to the SL Grant. The SL Grant is used to determine the location of the second sidelink resource.

The second sidelink resource may be received by the first terminal 20 at a third time, the third time being after the first time.

It is understood that the first terminal 20 receives the acknowledgement information when the second sidelink resource is that the acknowledgement information is ACK and the acknowledgement information is not sent to the network device 10 at the first time 20.

In step 403, the first terminal 20 processes the second sidelink resource according to the HARQ parameter under the condition that the confirmation information indicates that the second terminal 30 correctly receives the first data packet.

In the method, the first terminal may determine that acknowledgement information is not sent to the network device at the first time, and the acknowledgement information indicates that the second terminal correctly receives the first data packet, if the first terminal receives the second sidelink resource again. Since the HARQ parameter of the second sidelink resource comprises the NDI indication. The NDI indication is typically used to indicate a retransmission or a new transmission, and when this occurs, the first terminal may process the second sidelink resources according to 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 by the first terminal and unnecessary feedback by the second terminal can be avoided by processing the second sidelink resource.

As another embodiment of the present application, as shown in fig. 5, step 401 in the embodiment of the present application may be specifically implemented by:

step 4011, the first terminal 20 determines that the time when the acknowledgement information is sent and the time when the first terminal 20 sends the first message are both the first time.

I.e. the moment of sending the acknowledgement information is the same as the moment of sending the first message by the first terminal 20, i.e. the moment of sending the acknowledgement information and the moment of sending the first message by the first terminal 20 collide or overlap in time.

The first terminal 20 may determine whether the acknowledgement information is not sent to the network device 10 at the first time 20 according to a comparison of the priority of the physical uplink channel carrying the acknowledgement information and the priority of the first message, or a comparison of the priority of the physical uplink channel carrying the acknowledgement information and the priority of the sidelink channel carrying the first message. For example, it can be realized by step 4012:

step 4012, when the priority of the physical uplink channel carrying the acknowledgement information is lower than the priority of the first message, or the priority of the physical uplink channel carrying the acknowledgement information is lower than the priority of the sidelink channel carrying the first message, the first terminal 20 determines that the acknowledgement information is not sent to the network device 10 at the first time 20.

Illustratively, the time of the transmission of the acknowledgement information temporally conflicting with or overlapping with the time of the first message transmitted by the first terminal 20 includes the following:

example 1-1), the first message is a message that the first terminal 20 sends to the network device 10 in a random access procedure.

For example, the first message may be message1 (Msg 1) in the random access procedure. The message1 is transmitted through a Physical Random Access Channel (PRACH). Or the first message may be message 3 (Msg 3) in the random access procedure. The message 3 passes through a Physical Uplink Shared Channel (PUSCH).

That is, if the time when the first terminal 20 transmits the acknowledgement information through the physical uplink channel is the same as the time when the message1 or the message 3 is sent in the random access process, the priority of the physical uplink channel carrying the acknowledgement information is lower than the priority of the message1 or the message 3, that is, the first terminal 20 preferentially transmits the message1 or the message 3 and abandons the transmission of the acknowledgement information. Therefore, the first terminal 20 does not transmit the acknowledgement information to the network device 10 at the first time.

Example 1-2), the physical uplink channel is an uplink physical control channel (PUCCH), the first message is a sidelink SL Media Access Control (MAC) Protocol Data Unit (PDU), and the sidelink channel carrying the first message is a sidelink shared channel (SL-SCH). That is, at the first time, when the first terminal 20 needs to transmit the acknowledgement information to the network device 10 through the PUCCH, the first terminal also needs to transmit the SL MAC PDU to the second terminal 20 or another terminal on the sidelink SL. The SL MAC PDU may generally include Service Data Units (SDUs) from one or more different sidelink logical channels. The priorities of the different sidelink logical channels are different.

Correspondingly, in step 4012 in this embodiment of the present application, the determining, by the first terminal 20, that the acknowledgment information is not sent to the network device 10 at the first time 20 according to the priority of the physical uplink channel carrying the acknowledgment information and the priority of the sidelink channel carrying the first message includes: when the priority of the PUCCH carrying the acknowledgement information at the first time is lower than the priority of a physical sidelink shared channel (psch) mapped to the SL-SCH, the first terminal 20 does not transmit the acknowledgement information to the network device 10 at the first time.

That is, if the priority of the PUCCH carrying acknowledgement information is lower than the priority of SL-SCH transmission, the first terminal 20 preferentially transmits SL-SCH/pscch and discards transmitting PUCCH. Accordingly, the first terminal 20 determines that the acknowledgement information is not transmitted to the network device 10 at the first time 20.

In example 1-2), the transmission of the SL-SCH/psch with priority and the relinquishing of the transmission of the PUCCH are performed by the physical layer of the first terminal.

In the embodiment of the present application, the priority of the PUCCH carrying the acknowledgement information and the priority of the psch mapped by the SL-SCH depend on a comparison between a sidelink logical channel with the highest priority in the SL MAC PDU corresponding to the acknowledgement information and a sidelink logical channel with the highest priority in the SL MAC PDU to be transmitted by the SL-SCH.

It should be understood that the network device 10 may configure the resource for the first terminal 20 to send the acknowledgement information on the PUCCH in advance.

The SL MAC PDU corresponding to the acknowledgment information is: the SL MAC PDU for which the acknowledgement information is intended.

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

Examples 1-3), the physical uplink channel is a Physical Uplink Shared Channel (PUSCH), the first message is a SL MAC PDU, and the sidelink channel carrying the first message is a SL-SCH.

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

Correspondingly, in step 4012 in this embodiment of the present application, the determining, by the first terminal 20, that the acknowledgment information is not sent to the network device 10 at the first time 20 according to the priority of the physical uplink channel carrying the acknowledgment information and the priority of the sidelink channel carrying the first message includes:

if the priority of the PUSCH is lower than the priority of the SL-SCH, the first terminal 20 determines whether to transmit acknowledgement information to the network device 10 at a first time instant 20. For example, if the priority of the PUSCH is lower than the priority of the SL-SCH, the first terminal 20 determines that the acknowledgement information is not transmitted to the network device 10 at the first time instant 20.

Since the PUSCH may be generally used to transmit the MAC PDU transmitted by the first terminal 20 to the network device 10, when the acknowledgement information and the MAC PDU transmitted on the PUSCH may multiplex the PUSCH, whether the acknowledgement information to be transmitted on the PUSCH is ACK or NACK, the priority of the PUSCH and the priority of the SL-SCH may be determined by comparing the priority of the uplink logical channel with the highest priority of the side link logical channels in the MAC PDUs transmitted on the PUSCH and the SL-SCH.

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

Referring to one possible example 1-3-1, if the priority of the highest priority uplink logical channel among MAC PDUs transmitted on the PUSCH is lower than the priority of the highest priority sidelink logical channel among MAC PDUs transmitted on the SL-SCH, the first terminal determines that the priority of the PUSCH is lower than the priority of the SL-SCH.

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

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

Referring to one possible example 1-3-2, if the priority of the sidelink logical channel with the highest priority among the SL MAC PDUs corresponding to the acknowledgement information and the priority of the uplink logical channel with the highest priority among the MAC PDUs transmitted on the PUSCH are both lower than the priority of the sidelink logical channel with the highest priority among the MAC PDUs transmitted on the SL-SCH, 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 acknowledgement information. b) The priorities of the uplink logical channels with the highest priority in the MAC PDUs transmitted on the PUSCH are all indicated. c) Priority of a side link logical channel with highest priority among MAC PDUs transmitted on the SL-SCH. If the priority of a) or the priority of b) is higher than the priority of c), the first terminal 20 determines that the priority of the PUSCH is higher than the priority of the SL-SCH/PSSCH, i.e., transmits the PUCCH, and discards the transmission of the SL-SCH/PSSCH. If the priority of a) and the priority of b) are lower than the priority of c), the first terminal 20 determines that the priority of the PUSCH is lower than the priority of the SL-SCH/pscsch, i.e., transmits the SL-SCH/pscsch, and discards the transmission of the PUSCH.

Alternatively, 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.

Alternatively, in the embodiment of the present application, the first terminal 20 sends the acknowledgement information to the network device 10, but the network device 10 does not correctly receive the acknowledgement information, and then the first terminal 20 determines that the acknowledgement information is not sent to the network device 10.

As another embodiment of the present application, as shown in fig. 5 or fig. 6, a method provided in an embodiment of the present application further includes:

the first terminal 20 preferentially sends the acknowledgement information to the network device 10 at the first time according to the priority of the physical uplink channel carrying the acknowledgement information, the priority of the first message, or a comparison between the priority of the physical uplink channel carrying the acknowledgement information and the priority of the sidelink channel of the first message.

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

For example, in this embodiment of the present application, the first terminal 20 may determine that the priority of the physical uplink channel carrying the acknowledgement information is higher than the priority of the first message by: if the priority of the physical uplink channel carrying the acknowledgement information is higher than the priority of the message1 or the message 3, the first terminal 20 determines that the priority of the uplink channel carrying the acknowledgement information is higher than the priority of the first message.

For example, in the embodiment of the present application, the first terminal 20 may determine that the priority of the physical uplink channel carrying the acknowledgement information is higher than the priority of the sidelink channel carrying the first message by: if the priority of the PUCCH carrying acknowledgement information is higher than the priority of the SL-SCH transmission, the first terminal 20 determines that the priority of the physical uplink channel carrying acknowledgement information is higher than the priority of the sidelink channel carrying the first message.

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

Referring to this implementation manner, in the embodiment of the present application, the first terminal 20 may determine that the priority of the physical uplink channel carrying the acknowledgement information is higher than the priority of the sidelink channel carrying the first message by: if the priority of the PUSCH is higher than the priority of the SL-SCH, the first terminal 20 determines that the priority of the physical uplink channel carrying the acknowledgement information is higher than the priority of the sidelink channel carrying the first message.

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

Illustratively, in example 1-3-2, if the priority of a) or the priority of b) is higher than the priority of c), the first terminal 20 determines that the priority of the PUSCH is higher than the priority of the SL-SCH/pscch, i.e., transmits the PUCCH, and discards the transmission of the SL-SCH/pscch.

As another embodiment of the present application, as shown in fig. 5, step 403 in the embodiment of the present application may be specifically implemented by step 4031 or step 4032 as follows:

step 4031, the first terminal transmits the second data packet on the second sidelink 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 a retransmitted data packet.

It should be noted that, in this embodiment, the first terminal 20 may further associate a first variable (for example, defined as SL _ HARQ _ Feedback) for each of one or more sidelink HARQ processes of the first terminal 20. A first variable associated with any sidelink HARQ process, for reflecting whether the data packet of any sidelink HARQ process sent by the first terminal 20 is correctly received by the opposite side. Illustratively, each sidelink HARQ process in the embodiments of the present application has one process number. Each side link HARQ process is associated with a first variable: the process number of each sidelink HARQ process is associated with a first variable.

Illustratively, the method provided by the embodiment of the present application further includes: the first terminal 20 determines the first variable associated with the first sidelink HARQ process according to the process number carried in the HARQ parameter, where the process number is the process number of the first sidelink HARQ process. The first variable is used to reflect whether the second terminal 30 correctly receives the first data packet. The value of the first variable may 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 correctly receives the first data packet, and if the first terminal 20 receives the second sidelink resource again, the first terminal 20 may determine the value of the first variable of the HARQ process corresponding to the second sidelink resource by using the process number of the HARQ parameter corresponding to the second sidelink resource. If the value of the first variable of the HARQ process corresponding to the second sidelink resource is the first parameter value, the first terminal 20 determines that the second sidelink resource may not be used as a resource for retransmitting the first data packet.

One possible implementation manner of step 4031 in the embodiment of the present application is: if the NDI indicates new transmission and the HARQ process number is the process number of the second sidelink HARQ process, and if the value of the first variable associated with the first sidelink HARQ process 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 sidelink resource through the NDI.

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

Furthermore, it may also be understood that in case the NDI indicates a new transmission, the first terminal 20 determines that the HARQ buffer of the first sidelink HARQ process is empty, and the first terminal 20 may transmit the second data packet on the second sidelink resource.

It should be noted that, if the NDI indicates retransmission and the value of the first variable is the second parameter value, 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 (ignores) the second sidelink resource according to the HARQ parameter.

Ignoring (ignore) the second sidelink resource by the first terminal in the embodiment of the present application may be understood as: the first terminal does not transmit the first data packet using the second sidelink resource.

Correspondingly, as a possible implementation manner, step 4032 in the embodiment of the present application may be implemented in the following manner: in the case that the NDI indicates retransmission, the HARQ process number is 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, the first terminal 20 ignores the second sidelink resource.

It should be noted that, since the network device 10 provides the process number to the first terminal 20 when allocating the second sidelink resource to the first terminal 20, if the HARQ process number included in the HARQ parameter is the same as the process number of the first sidelink HARQ process, 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 in 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 based on the acknowledgement information from the second terminal 30.

Specifically, if the acknowledgment information is ACK, the first terminal determines that a value of a first variable associated with the first sidelink HARQ process is a first parameter value. And if the confirmation 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 manner, step 4032 in the embodiment of the present application may be specifically implemented by: when NDI indicates retransmission and the HARQ (buffer) buffer of the first sidelink HARQ process is empty, the first terminal 20 ignores the second sidelink resources.

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

The above-mentioned processes from step 401 to step 404 mainly describe the procedure of the first terminal 20 processing the second sidelink resource according to the HARQ parameter of the second sidelink resource if the first terminal 20 receives the second sidelink resource again in the case that the acknowledgement information is not sent to the network device 10 at the first time 20 and the acknowledgement information indicates that the second terminal 30 correctly receives the first data packet. However, in an actual process, the second terminal 30 may correctly receive the first data packet, that is, the acknowledgement information is NACK, which indicates that the first terminal 20 needs to retransmit the first data packet, and NACK needs to be fed back to the network device 10 at the first time, so that the network device 10 determines that the first data packet is not correctly received after receiving the NACK, and may allocate a second sidelink resource for retransmitting the first data packet to the first terminal 20. 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 by the following embodiment.

With reference to fig. 6, a method for sending sidelink resources provided in the embodiment of the present application includes:

step 601, the first terminal 20 determines that the acknowledgement information of the first sidelink HARQ process is not sent to the network device 10 at the first time 20. The acknowledgement 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 specific implementation of step 601, reference may be made to the descriptions of step 401, step 4011, and step 4012, which are not described herein again.

In step 602, the first terminal 20 determines a third sidelink resource for retransmitting the first data packet.

Illustratively, the third side link resource for retransmitting the first packet may be acquired by the first terminal 20 from the network device 10. Or the third sidelink resource for retransmission of the first data packet may be selected autonomously by the first terminal 20.

Step 603, in case that the confirmation information indicates that the second terminal 30 does not correctly receive 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 acknowledgement information is NACK, the first terminal 20 retransmits the first data packet by using the third sidelink resource after needing to retransmit the third sidelink resource of the first data packet.

Specifically, the first terminal 20 may transmit the first data packet to the second terminal 30 at the third sidelink resource through the sidelink between the first terminal 20 and the second terminal 30 after the first time.

In the method, a first terminal may determine a sidelink resource for retransmitting a sidelink service when determining that acknowledgement information is not sent to a network device at a first time, and retransmit the sidelink service to a second terminal using the sidelink resource.

Referring to another embodiment of the present application, if the sidelink resource for retransmitting the first packet is configured by the network device, as shown in fig. 7, the method provided by the embodiment of the present application may further include, before step 602:

in 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, namely the process number corresponding to the second sidelink resource is the same as the process number of the first sidelink HARQ process.

The second sidelink resource is associated with the first sidelink HARQ process, and specifically includes: the HARQ process number included in Downlink Control Information (DCI) indicating the second sidelink resource is the process number of the first sidelink HARQ process.

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

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

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 NACK of the first sidelink HARQ process m to the network device 10, so that the network device 10 determines that the first data packet is not correctly received according to the received NACK, and further determines whether to schedule the second sidelink resource for the first terminal 20. However, since the first terminal 20 does not feed back NACK for the first sidelink HARQ process m to the network device 10 at time n, the first terminal 20 may wait for a second sidelink resource (sidelink grant) scheduled by the network device 10 for retransmission of the first data packet of the first sidelink HARQ process m. After the first terminal 20 receives the sidelink grant, the first terminal 30 retransmits the first data packet of the first sidelink HARQ process m to the second terminal by using the sidelink grant.

As a possible embodiment of the present application, if the sidelink resource for retransmitting the first data packet is determined by the first terminal 20, step 602 provided in the embodiment of the present application may be specifically implemented by: in case the acknowledgement information indicates that the second terminal 30 did not correctly receive the first data packet, the first terminal 20 determines the first sidelink resource as the third sidelink resource.

The first sidelink resource may be a sidelink resource configured by the network device 10 for the first terminal 20 to transmit the first data packet. The first sidelink resource may also be a sidelink resource that the first terminal 20 autonomously selects in a preconfigured sidelink resource pool.

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

Illustratively, the second time is derived from the first time and a preset offset value.

For example, the preset offset value in the 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 the first data packet of the first sidelink HARQ process m needs to be retransmitted, NACK of the first sidelink HARQ process m needs to be fed back to the network device 10 at n time, so that the network device 10 determines that the first data packet is not correctly received according to the received NACK, and further determines whether to schedule the second sidelink resource for the first terminal 20. However, since the first terminal 20 does not feed back NACK for the first sidelink HARQ process m to the network device 10 at time n, the first terminal 20 may retransmit the first data packet to the second terminal 30 at time n + X using the first sidelink resource of the previous transmission of the first data packet. Wherein X denotes a preset offset value and n denotes a first time.

In this embodiment, the first terminal 20 may determine, by using a predefined protocol, that the third sidelink resource is determined in the first manner or the second manner. Of course, the determination of the sidelink resource by the first terminal 20 in the first manner or 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 sidelink resource in the first manner or the second manner, with reference to fig. 7, the method provided in this embodiment of the application may further include, before step 601:

step 605, the network device 10 sends the indication information to the first terminal 20. The indication information is used to indicate that the first terminal 20 determines the sidelink resource in the first mode or the second mode. Wherein, the first mode is as follows: the first terminal 20 determines the second sidelink resource reallocated by the network device 10 for the first terminal 20 as the third sidelink resource. The second mode is as follows: the first terminal 20 determines the first sidelink resource as the third sidelink resource.

It is understood that the first way, i.e. the first terminal 20 waits for the network device 10 to reallocate the second sidelink resource for the first terminal 20 and to determine the second sidelink resource as the third sidelink resource. If configured in the first manner, the first terminal 20 and the network device 10 negotiate in advance that if the first terminal 20 does not send the acknowledgement information to the network device 10, that is, if the network device 10 does not receive the acknowledgement information, the network device 10 may determine that 10 needs to allocate the second sidelink resource to the first terminal 20 by default if the first data packet is not successfully received.

It will be appreciated that the second way, i.e. the first terminal 20, retransmits the first data packet after the first time using the first sidelink resource from which the first data packet was previously transmitted. If the second mode is configured, the first terminal 20 and the network device 10 agree in advance that if the first terminal 20 does not send the acknowledgement information to the network device 20, that is, if the network device 10 does not receive the acknowledgement information, the network device 10 determines that the second sidelink resource does not need to be allocated to the first terminal 20, so that the first terminal 20 may retransmit the first data packet using the first sidelink resource.

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

Correspondingly, the first terminal 20 determines to determine the sidelink resource by adopting the first mode or the second mode 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 resource in the first manner or the second manner, steps 605 and 606 may be omitted. I.e. step 605 and step 606 are optional steps.

It is understood that the scheme described in fig. 4 or fig. 5 in the embodiment of the present application may be implemented as a complete scheme with the scheme described in fig. 6 and fig. 7, and of course, the scheme described in fig. 4 or fig. 5 may be implemented as a scheme for describing how the first terminal 20 processes the second sidelink resource in the case that the first terminal 20 does not send the acknowledgement information to the network device 10, and the acknowledgement information indicates that the first data packet is correctly received, and the network device 10 reschedules the second sidelink resource for the first terminal 20. The schemes described in fig. 6 and fig. 7 are implemented as a scheme for describing that, in a case where the first terminal 20 does not transmit the acknowledgement information to the network device 10, and the acknowledgement information indicates that the first packet is not correctly received, the first terminal 20 retransmits the first packet to the second terminal 30 by re-determining the sidelink resource for retransmission.

As shown in fig. 8, fig. 8 shows that the present application provides a method for processing sidelink resources, including:

step 801, the first terminal 20 sends acknowledgement information of the first sidelink HARQ process to the network device 10 at the first time 20. The acknowledgement information is used to instruct the second terminal 30 to correctly receive 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, in case that the first terminal 20 determines that the second terminal 30 correctly receives 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 sidelink resource includes NDI.

The scheme illustrated in fig. 8 is applicable to a case where the first terminal 20 sends the network device 10 the acknowledgement information of the first sidelink HARQ process, but the network device 10 does not receive the acknowledgement information and allocates the second sidelink resources to the first terminal 20.

Referring to an implementation manner of the present application, step 803 in the embodiment of the present application may be implemented by: reference may be made to step 4031 above, which is not described herein again.

Referring to an implementation manner of the present application, step 803 in the embodiment of the present application may be implemented by: reference may be made to step 4032 above, which is not described herein again.

Referring to another embodiment of the present application, as shown in fig. 8, a method provided in 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 HARQ buffer of the first sidelink HARQ process.

For example, the transmitting, by the first terminal, the second data packet on the second sidelink resource according to the HARQ parameter of the second sidelink resource includes: and under the condition that the NDI indicates new transmission, 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 a second data packet on the second sidelink resource.

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

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

For example, the determining, by the first terminal, that the physical uplink channel is a physical uplink control channel, the first message is a sidelink SL MAC protocol data unit PDU, the sidelink channel carrying the first message is a sidelink shared channel SL-SCH, and the sending of the acknowledgement information to the network device at the first time is determined according to the priority of the physical uplink channel carrying the acknowledgement information and the priority of the sidelink channel carrying the first message includes: and under the condition that the priority of a physical uplink control channel carrying the confirmation information at the first time is higher than the priority of a physical side link shared channel PSSCH mapped by the side link shared channel, the first terminal determines to send the confirmation information to the network equipment at the first time.

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

For example, the physical uplink channel is a physical uplink shared channel PUSCH, the first message is a sidelink SL media 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 the acknowledgement information to the network device at a first moment according to the priority of the uplink channel carrying the acknowledgement information and the priority of the sidelink channel carrying the first message, and the method comprises the following steps: the first terminal determines to transmit acknowledgement information to the network device at a first time instant if the priority of the PUSCH is higher than the priority of the SL-SCH.

For example, if the priority of the uplink logical channel with the highest priority among the MAC PDUs transmitted on the PUSCH is higher than the priority of the sidelink logical channel with the highest priority among the MAC PDUs transmitted on the SL-SCH, 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 acknowledgement information and the priority of the uplink logical channel with the highest priority in the MAC PDU transmitted on the PUSCH are both 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 the priority of the SL-SCH.

In another embodiment of the present application, a method provided in the embodiment of the present application further includes: and under the condition that the priority of the physical uplink channel carrying the confirmation information is lower than that of the first message or the priority of the physical uplink channel carrying the confirmation information is lower than that of the side link channel carrying the first message, the first terminal sends the first message preferentially at the first moment. I.e. the acknowledgement information is discarded.

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

in step 901, the first terminal 20 determines to send acknowledgement information of the first sidelink HARQ process to the network device 10 at the first time. The acknowledgement information is used to indicate that the second terminal 30 did not correctly receive 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.

The specific implementation of step 901 may refer to the description at step 801, and is not described herein again.

Step 902, if the first terminal 20 does not receive the second sidelink resource from the network device 10, the first terminal 20 determines that the first sidelink resource is the third sidelink resource.

The first sidelink resource may be a sidelink resource configured by the network device 10 for the first terminal 20 to transmit the first data packet. The first sidelink resource may also be a sidelink resource autonomously selected by the first terminal 20 in a pre-configured sidelink resource pool.

Specifically, the first terminal 20 is preconfigured to determine the sidelink resources in the second way, or the first terminal 20 determines the sidelink resources in the second way from the network device 10. The second mode is as follows: the first terminal 20 determines the first sidelink resource as the third sidelink resource.

In step 903, the first terminal 20 retransmits the first data packet to the second terminal 30 through the first sidelink resource.

The specific implementation of step 903 may specifically be implemented in the following manner with reference to step 603, and details are not described here.

It should be understood that if the contents related to fig. 8 and 9 are the same as those in fig. 5 to 7, the contents related to fig. 8 and 9 may be described with reference to fig. 5 to 7, and are not described again here.

The above-mentioned scheme of the embodiment of the present application is introduced mainly from the perspective of interaction between network elements. It is to be understood that each network element, for example, the first terminal, etc., includes corresponding hardware structures and/or software modules for performing each function in order to implement the above functions. Those of skill in the art will readily appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as hardware or combinations of hardware and computer software. Whether a function is performed as hardware or computer software drives hardware depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

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

The method of the embodiment of the present application is described above with reference to fig. 1 to fig. 9, and an apparatus for transmitting side uplink resources, which is provided by the embodiment of the present application and performs the method, is described below. Those skilled in the art will understand that the method and the apparatus can be combined and referred to each other, and the apparatus for transmitting sidelink resources provided in the embodiments of the present application can perform the steps performed by the first terminal in the method for transmitting sidelink resources described above.

In the case of using an integrated unit, fig. 10 shows an apparatus for transmitting sidelink resources in the above embodiment, where the apparatus for transmitting sidelink resources may include: a processing unit 101. Optionally, the apparatus may further comprise a communication unit 102.

In one example, the apparatus for transmitting the sidelink resource is the first terminal, or a chip applied in the first terminal. In this case, the processing unit 101, the means for supporting the transmit side uplink resource, performs the steps 401, 402 and 402 in fig. 4 performed by the first terminal in the above-described embodiment.

In a possible embodiment, the processing unit 101 is further configured to enable the apparatus supporting the transmission-side uplink resource to perform step 4011, step 4012, step 4031, and step 4032 in the foregoing embodiment, where the step is performed by the first terminal. The communication unit 102 is further configured to enable the apparatus for supporting the uplink resource of the transmitting side to perform step 404 executed by the first terminal in the above embodiment.

For another example, the apparatus for transmitting the sidelink resource is the first terminal or a chip applied in the first terminal. In this case, the processing unit 101, the means for supporting the transmit side uplink resource, performs the steps 601 and 602 performed by the first terminal in the above embodiment. The communication unit 102, the apparatus for supporting the transmit side uplink resource, performs the step 603 performed by the first terminal in the above embodiment.

In a possible embodiment, the communication unit 102, the apparatus for supporting the transmit side uplink resource, performs the steps 604 and 606 performed by the first terminal in the above embodiments.

In still another example, the apparatus for transmitting the sidelink resource is the first terminal or a chip applied in the first terminal. In this case, the apparatus for supporting the transmit side uplink resource by the communication unit 102 performs steps 801 and 802 performed by the first terminal in the above embodiment. The processing unit 101, the means for supporting the transmit side uplink resource, performs step 803 performed by the first terminal in the above embodiment.

In yet another example, the apparatus for transmitting the sidelink resource is the first terminal or a chip applied in the first terminal. In this case, the apparatus for supporting the transmit side uplink resource by the communication unit 102 performs steps 901 and 903 performed by the first terminal in the above embodiment. The processing unit 101, the apparatus for supporting the uplink resource of the transmitting side, executes the step 902 executed by the first terminal in the above embodiment.

Fig. 11 shows a schematic diagram of a possible logical structure of the apparatus for transmitting side uplink resources in the above embodiment, where an integrated unit is adopted. The apparatus for transmitting sidelink resources comprises: a processing module 112 and a communication module 113. The processing module 112 is used for controlling and managing the operation of the device of the transmitting side uplink resource, for example, the processing module 112 is used for executing the steps of information/data processing in the device of the transmitting side uplink resource. The communication module 113 is used for supporting the device of the uplink resource of the transmitting side to perform the steps of information/data transmission or reception.

In a possible embodiment, the apparatus for transmitting sidelink resources may further comprise a storage module 111 for storing program codes and data available to the apparatus for transmitting sidelink resources.

In one example, the apparatus for transmitting the sidelink resource is the first terminal or a chip applied in the first terminal. In this case, the processing module 112, the means for supporting the transmit side uplink resource, performs the steps 401, 402 and 402 in fig. 4 performed by the first terminal in the above-mentioned embodiment.

In a possible embodiment, the processing module 112 is further configured to enable the apparatus supporting the sending-side uplink resource 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 enable the apparatus for supporting the uplink resource of the transmitting side to perform step 404 executed by the first terminal in the foregoing embodiment.

For another example, the apparatus for transmitting the sidelink resource is the first terminal or a chip applied in the first terminal. In this case, the processing module 112, the means for supporting the transmit side uplink resource, performs the steps 601 and 602 performed by the first terminal in the above embodiment. A communication module 113, configured to enable the apparatus for supporting the uplink resource of the sender to perform step 603 performed by the first terminal in the foregoing embodiment.

In a possible embodiment, the communication module 113, the apparatus for supporting the transmit side uplink resource, performs the steps 604 and 606 performed by the first terminal in the above embodiments.

In still another example, the apparatus for transmitting the sidelink resource is the first terminal or a chip applied in the first terminal. In this case, the apparatus for supporting the transmit side uplink resource by the communication module 113 performs the steps 801, 802 performed by the first terminal in the above embodiment. The processing module 112, configured to enable the apparatus for supporting the uplink resource of the sender, performs step 803 performed by the first terminal in the above embodiment.

In yet another example, the apparatus for transmitting the sidelink resource is the first terminal or a chip applied in the first terminal. In this case, the apparatus for supporting the transmit side uplink resource by the communication module 113 performs the steps 901 and 903 performed by the first terminal in the above embodiment. The processing module 112, configured to support the apparatus for transmitting side uplink resources, performs step 902 performed by the first terminal in the foregoing embodiment.

The processing module 112 may be a processor or controller, such as a central processing unit, a general purpose processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array or other programmable logic device, a transistor logic device, a hardware component, or any combination thereof. Which may implement or execute the various illustrative logical blocks, modules, and circuits described in connection with the disclosure herein. A processor may also be a combination of computing functions, e.g., a combination comprising one or more microprocessors, a digital signal processor and a microprocessor, or the like. The communication module 113 may be a transceiver, a transceiving circuit or a communication interface, etc. 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 apparatus for transmitting the uplink resource according to the present application may be the communication device shown in fig. 2.

In one example, the communication device is a first terminal or a chip applied in the first terminal. In this case, processor 41 or processor 45 is configured to enable the communication device to perform steps 401, 402 and 402 of fig. 4 in the above embodiment by the first terminal.

In a possible embodiment, processor 41 or processor 45 is further configured to support the communication device to perform 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 enable the communication device to perform the step 404 performed by the first terminal in the above embodiment.

As another example, the communication device is the first terminal, or a chip applied in the first terminal. In this case, processor 41 or processor 45 is configured to enable the communication device to perform steps 601 and 602 performed by the first terminal in the above-described embodiments. A transceiver 43 for enabling the communication device to perform the step 603 performed by the first terminal in the above embodiments.

In a possible embodiment, the transceiver 43 is configured to support the communication device to perform the steps 604 and 606 performed by the first terminal in the above embodiments.

In still another example, the communication device is the first terminal, or a chip applied in the first terminal. In this case, the transceiver 43 is used to support the communication device to perform the steps 801, 802 performed by the first terminal in the above embodiments. Processor 41 or processor 45 for enabling the communication device to perform step 803 performed by the first terminal in the above embodiments.

In yet another example, the communication device is the first terminal, or a chip applied in the first terminal. In this case, the transceiver 43 is used to support the communication device to perform the steps 901, 903 performed by the first terminal in the above embodiment. Processor 41 or processor 45 for enabling the communication device to perform the step 902 performed by the first terminal in the above embodiments.

Fig. 12 is a schematic structural diagram of a chip 150 according to an embodiment of the present disclosure. Chip 150 includes one or more (including two) processors 1510 and a communication interface 1530.

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

In some embodiments, memory 1540 stores elements, execution modules, or data structures, or a subset thereof, or an expanded set thereof.

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

One possible implementation is: the chip used for the first terminal has a similar structure, and different devices can use different chips to realize respective functions.

The processor 1510 controls processing operations of any one of the first terminals, and the processor 1510 may also be referred to as a Central Processing Unit (CPU).

Memory 1540 can include both read-only memory and random-access memory, and provides instructions and data to processor 1510. A portion of the memory 1540 may also include NVRAM. For example, in an application where memory 1540, communications interface 1530 and memory 1540 are coupled together by bus system 1520, where bus system 1520 may include a power bus, control bus, status signal bus, etc. in addition to a data bus. For clarity of illustration, however, the various buses are labeled in fig. 12 as bus system 1520.

The method disclosed in the 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 having signal processing capabilities. In implementation, the steps of the above method may be performed by instructions in the form of hardware, integrated logic circuits, or software in the processor 1510. The processor 1510 may be a general purpose processor, a Digital Signal Processor (DSP), an ASIC, an off-the-shelf programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic, or discrete hardware components. The various methods, steps, and logic blocks disclosed in the embodiments of the present application may be implemented or performed. 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 modules may be located in ram, flash, rom, prom, or eprom, registers, etc. as is well known in the art. The storage medium is located in the memory 1540, and the processor 1510 reads the information in the memory 1540, and performs the steps of the above method in combination with the hardware thereof.

In one possible implementation, the communication interface 1530 is configured to perform the steps of receiving and transmitting of the first terminal in the embodiments shown in fig. 4-9. The processor 1510 is configured to perform the steps of the processing of the first terminal in the embodiments shown in fig. 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 in the form of a chip, the communication unit is a communication interface for the chip to receive signals from other chips or devices or to transmit signals.

In addition, embodiments of the present application may provide a computer-readable storage medium, where instructions are stored, and when the instructions are executed, the functions of the first terminal in fig. 4 and fig. 5 are implemented.

The embodiment of the application provides a computer-readable storage medium, and the computer-readable storage medium stores instructions, and when the instructions are executed, the functions of the first terminal in fig. 6 and fig. 7 are realized.

An embodiment of the present application provides a computer-readable storage medium, in which instructions are stored, and when the instructions are executed, the functions of the first terminal as in fig. 8 are implemented.

An embodiment of the present application provides a computer-readable storage medium, in which instructions are stored, and when the instructions are executed, the functions of the first terminal as in fig. 9 are implemented.

The embodiment of the present application provides a computer program product including instructions, and the computer program product includes instructions, when the instructions are executed, the functions of the first terminal as in fig. 8 are implemented.

The embodiment of the present application provides a computer program product including instructions, and the computer program product includes instructions, when the instructions are executed, implement the functions of the first terminal as in fig. 9.

The embodiment of the present application provides a computer program product including instructions, and the computer program product includes instructions, when the instructions are executed, the functions of the first terminal as in fig. 4 or fig. 5 are implemented.

Embodiments of the present application provide a computer program product including instructions, where the instructions are executed to implement the functions of the first terminal as in fig. 6 or fig. 7.

The chip provided by the embodiment of the present application is applied to a first terminal, and the chip includes at least one processor and a communication interface, where the communication interface is coupled to the at least one processor, and the processor is configured to execute instructions to implement the functions of the first terminal in fig. 4 or fig. 5.

The chip provided by the embodiment of the present application is applied to a first terminal, and the chip includes at least one processor and a communication interface, where the communication interface is coupled to the at least one processor, and the processor is configured to execute instructions to implement the functions of the first terminal in fig. 6 and fig. 7.

The embodiment of the present application provides a chip, which is applied to a first terminal, where the chip includes at least one processor and a communication interface, the communication interface is coupled to the at least one processor, and the processor is configured to execute instructions to implement the functions of the first terminal as shown in fig. 8.

The chip provided by the embodiment of the present application is applied to a first terminal, and the chip includes at least one processor and a communication interface, where the communication interface is coupled to the at least one processor, and the processor is configured to execute instructions to implement a function of the first terminal as shown in fig. 9.

The embodiment of the present application provides a computer program product including instructions, and the computer program product includes instructions, when the instructions are executed, the functions of the first terminal in fig. 4, fig. 5 or fig. 6 are implemented.

The embodiment of the present application provides a chip, where the chip is applied in a first terminal, and the chip includes at least one processor and a communication interface, where the communication interface is coupled with the at least one processor, and the processor is configured to execute instructions to implement the functions of the first terminal in fig. 4, 5, and 6.

An embodiment of the present application provides a communication system, which includes a first terminal, a second terminal, and a network device 10, where the first terminal is configured to execute the steps executed by the first terminal in fig. 4 to 9, and the network device 10 is configured to execute the steps executed by the network device 10 in fig. 4 to 9.

In the above embodiments, all or part of the implementation may be realized by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer programs or instructions. When the computer program or instructions are loaded and executed on a computer, the processes or functions described in the embodiments of the present application are performed in whole or in part. The computer may be a general purpose computer, a special purpose computer, a computer network, a network appliance, a user device, or other programmable apparatus. The computer program or instructions may be stored in a computer readable storage medium or transmitted from one computer readable storage medium to another computer readable storage medium, for example, the computer program or instructions may be transmitted from one website, computer, server or data center to another website, computer, server or data center by wire or wirelessly. The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. that integrates one or more available media. The usable medium may be a magnetic medium, such as a floppy disk, a hard disk, a magnetic tape; or an optical medium, such as a Digital Video Disc (DVD); it may also be a semiconductor medium, such as a Solid State Drive (SSD).

While the present application has been described in connection with various embodiments, other variations to the disclosed embodiments can be understood and effected by those skilled in the art in practicing the claimed application, from a review of the drawings, the disclosure, and the appended claims. In the claims, the word "comprising" does not exclude other elements or steps, and the word "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 a combination of these measures cannot be used to advantage.

Although the present application has been described in conjunction with specific features and embodiments thereof, it will be evident that various modifications and combinations can be made thereto without departing from the spirit and scope of the application. Accordingly, the specification and figures are merely exemplary of the present application as defined in the appended claims and are intended to cover any and all modifications, variations, combinations, or equivalents within the scope of the present application. It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to include such modifications and variations.

Claims

1. A method of processing sidelink resources, comprising:

the first terminal receives a second sidelink resource sent by the network equipment;

and the first terminal equipment ignores the second sidelink resource or transmits a second data packet on the second sidelink resource according to the HARQ parameter of the second sidelink resource.

2. The method of claim 1, wherein the HARQ parameters of the second sidelink resource include a New Data Indication (NDI) and a HARQ process number, and wherein the first terminal ignores the second sidelink resource according to the HARQ parameters of the second sidelink resource, comprising:

when the NDI indicates retransmission, the HARQ process number is associated with the process number of a first sidelink HARQ process, and the value of a first variable associated with the first sidelink HARQ process is a first parameter value, the first terminal ignores the second sidelink resource;

and the first parameter value represents that the second terminal correctly receives the first data packet of the first sidelink HARQ progress sent by the first terminal.

3. The method of claim 1, wherein the HARQ parameters of the second sidelink resource include a New Data Indication (NDI) and a HARQ process number, and wherein the first terminal ignores the second sidelink resource according to the HARQ parameters of the second sidelink resource, comprising:

and under the condition that the NDI indicates retransmission, 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 first terminal ignores the second sidelink resource.

4. The method of claim 3, further comprising:

and if the first data packet of the first sidelink HARQ process sent by the first terminal to the second terminal is successfully received by the second terminal, the first terminal clears the HARQ cache of the first sidelink HARQ process.

5. The method of claim 2, wherein the first terminal transmits a second data packet on the second sidelink resource according to the HARQ parameter of the second sidelink resource, comprising:

when the NDI indicates new transmission, 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, the first terminal transmits the second data packet on the second sidelink resource if the NDI indicates a new transmission.

6. The method of claim 2,

when the NDI indicates retransmission, 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 a second parameter value: the first terminal determining 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 sidelink resource;

wherein the second parameter value indicates that the second terminal did not correctly receive the first data packet.

7. The method of claim 6, further comprising:

the first terminal receiving a second sidelink resource from the network device, the second sidelink resource being associated with the first sidelink HARQ process;

the first terminal determining a third sidelink resource for retransmitting the first packet, comprising:

the first terminal determines that the second sidelink resource is the third sidelink resource.

8. The method of claim 6, wherein the determining, by the first terminal, a third sidelink resource for retransmitting the first packet comprises:

the first terminal determines the first sidelink resource as the third sidelink resource.

9. The method according to any one of claims 6-8, further comprising:

the first terminal receives indication information from the network equipment, wherein the indication information is used for indicating the first terminal to determine the third sidelink resource in a first mode or a second mode;

wherein the first mode is as follows: the first terminal determines the second sidelink resource reallocated by the network equipment for the first terminal as the third sidelink resource;

the second mode is as follows: the first terminal determines the first sidelink resource as the third sidelink resource.

10. A communications apparatus, comprising:

and the processor is used for ignoring the second sidelink resource or transmitting a second data packet on the second sidelink resource according to the HARQ parameter of the second sidelink resource.

11. The apparatus of claim 10, wherein the HARQ parameters for the second sidelink resource comprise a New Data Indication (NDI) and a HARQ process number, and wherein the processor is configured to ignore the second sidelink resource if the NDI indicates a retransmission, the HARQ process number is associated with a process number for a first sidelink HARQ process, and a value of a first variable associated with the first sidelink HARQ process is a first parameter value;

12. The apparatus of claim 10, wherein the HARQ parameters for the second sidelink resource comprise a New Data Indication (NDI) and a HARQ process number, and wherein the processor is configured to ignore the second sidelink resource when the NDI indicates a retransmission, the HARQ process number is associated with a process number for a first sidelink HARQ process, and a HARQ buffer for the first sidelink HARQ process is empty.

13. The apparatus of claim 12, wherein the processor is further configured to clear the HARQ buffer of the first sidelink HARQ process if the first data packet of the first sidelink HARQ process sent by the transceiver to the second terminal has been successfully received by the second terminal.

14. The apparatus of claim 11, wherein the processor is further configured to transmit a second data packet on the second sidelink resource through the transceiver according to the HARQ parameter of the second sidelink resource, and wherein the processor is further configured to:

transmitting, by the transceiver, the second data packet on the second sidelink resource when the NDI indicates new transmission, the HARQ process number is associated with a process number of the first sidelink HARQ process, and a value of a first variable of the first sidelink HARQ process is a first parameter value;

or transmitting, by the transceiver, the second packet on the second sidelink resource if the NDI indicates a new transmission.

15. The apparatus of any of claim 11, wherein, in the case that 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 the second parameter value: the processor further configured to determine a third sidelink resource for retransmission of the first packet;

the transceiver is further configured to send the first data packet to the second terminal through the third sidelink resource;

16. The apparatus of claim 15, wherein the transceiver is further configured to receive a second sidelink resource from the network device, the second sidelink resource associated with the first sidelink HARQ process;

the processor is specifically configured to determine that the second sidelink resource is the third sidelink resource.

17. The apparatus of claim 15, wherein the processor is specifically configured to determine the first sidelink resource as the third sidelink resource.

18. The apparatus of any of claims 15-17, wherein the transceiver is further configured to receive indication information from the network device, where the indication information indicates that the third sidelink resource is determined in a first manner or a second manner;

wherein, the first mode is as follows: determining the second sidelink resource reallocated by the network equipment for the apparatus to be the third sidelink resource;

the second mode is as follows: determining the first side link resource as the third side link resource.

19. A chip comprising at least one processor and a communication interface coupled to the at least one processor, the at least one processor being configured to execute a computer program or instructions to implement the method of processing sidelink resources as recited in any of claims 1-9, the communication interface being configured to communicate with other modules external to the chip.

20. A computer-readable storage medium having stored thereon instructions which, when executed, implement the method of processing sidelink resources of any of claims 1-9.

21. A communication system, comprising: communication apparatus and network device as claimed in any of claims 10 to 18.