Data transmission method, device and computer storage medium

1. A method for data transmission, applied to a transmitting end user equipment (UE) in a device-to-device (D2D) sidelink (SL) transmission system, the method comprising:

acquiring configuration information from a network side device;

determining whether a hybrid automatic repeat request (HARQ) retransmission needs to be performed based on the configuration information;

after determining that the HARQ retransmission needs to be performed, sending, to a receiving end UE, a HARQ transmission mode of data to be transmitted through a physical sidelink control channel (PSCCH) and/or a physical sidelink shared channel (PSSCH), wherein the HARQ transmission mode comprises a first mode without requiring feedback or a second mode requiring feedback; and

transmitting, according to the HARQ transmission mode, the data to be transmitted to the receiving end UE,

wherein the configuration information comprises an indication with respect to a logical channel,

the indication with respect to the logical channel comprises reliability description information on that HARQ retransmission needs to be performed for a target address or a target service, and determining whether HARQ retransmission needs to be performed based on the configuration information comprises: detecting whether reliability requirement of the data to be transmitted meets the reliability description information on that HARQ retransmission needs to be performed for a target address or a target service; determining, if yes, to perform HARQ retransmission for the data to be transmitted; and determining, if no, not to perform HARQ retransmission for the data to be transmitted, or

the indication with respect to the logical channel comprises a network environment indicator threshold corresponding to a situation where HARQ retransmission needs to be performed, and determining whether HARQ retransmission needs to be performed based on the configuration information comprises: detecting whether a network environment indicator value when the data to be transmitted is sent exceeds the network environment indicator threshold corresponding to the situation where HARQ retransmission needs to be performed; determining, if yes, to perform HARQ retransmission for the data to be transmitted; and determining, if no, not to perform HAQR retransmission for the data to be transmitted.

2. The method according to claim 1 , wherein the indication with respect to the logical channel comprises at least one of an indication that HARQ retransmission needs to be performed for a target service, or an indication that HARQ retransmission needs to be performed for a target address.

3. The method according to claim 1 , wherein the indication with respect to the logical channel comprises at least one of an indication on whether HARQ retransmission needs to be performed; or an indication of reliability description information.

4. The method according to claim 1 , wherein determining whether HARQ retransmission needs to be performed based on the configuration information comprises:

detecting whether an indication that HARQ retransmission needs to be performed for a target service or an indication that HARQ retransmission needs to be performed for a target address is included in the data to be transmitted;

determining, if yes, to perform HARQ retransmission for the data to be transmitted; and

determining, if no, not to perform HAQR retransmission for the data to be transmitted.

5. The method according to claim 1 , wherein determining whether HARQ retransmission needs to be performed based on the configuration information comprises:

determining whether HARQ retransmission needs to be performed for the data to be transmitted according to a mapping relationship between a combination of the indication with respect to the logical channel and channel quality information and a HARQ retransmission parameter.

6. The method according to claim 1 , wherein the sending, to the receiving end UE, the HARQ transmission mode of the data to be transmitted through the PSCCH comprises:

sending, to the receiving end UE, the HARQ transmission mode of the data to be transmitted sending, to the receiving end UE, the HARQ transmission mode of the data to be transmitted through radio resource control (RRC) signaling, medium access control layer control element (MAC CE) or PC5 interface signal (PC5-S).

7. The method according to claim 1 , wherein sending, to the receiving end UE, the HARQ transmission mode of the data to be transmitted through the PSCCH and/or the PSSCH comprises:

sending, to the receiving end UE, the HARQ transmission mode of the data to be transmitted sending, to the receiving end UE, the HARQ transmission mode of the data to be transmitted through content carried by the PSCCH and/or the PSSCH;

sending, to the receiving end UE, the HARQ transmission mode of the data to be transmitted sending, to the receiving end UE, the HARQ transmission mode of the data to be transmitted through a time and/or frequency position of the PSCCH and/or the PSSCH; or

sending, to the receiving end UE, the HARQ transmission mode of the data to be transmitted sending, to the receiving end UE, the HARQ transmission mode of the data to be transmitted through reference signal of the PSCCH and/or the PSSCH.

8. A transmitting end user equipment (UE) in a device-to-device (D2D) sidelink (SL) transmission system, comprising a network interface, a memory, and a processor; wherein

the network interface is configured to receive and send signals during a process of transceiving information with another external network element;

the memory is configured to store a computer program capable of running on the processor;

the processor, when running the computer program, is configured to:

acquire configuration information from a network side device;

determine whether a hybrid automatic repeat request (HARQ) retransmission needs to be performed based on the configuration information;

after determining that the HARQ retransmission needs to be performed, send, to a receiving end UE, a HARQ transmission mode of data to be transmitted through a physical sidelink control channel (PSCCH) and/or a physical sidelink shared channel (PSSCH), wherein the HARQ transmission mode comprises a first mode without requiring feedback or a second mode requiring feedback; and

transmit, according to the HARQ transmission mode, the data to be transmitted to the receiving end UE,

wherein the configuration information comprises an indication with respect to a logical channel,

the indication with respect to the logical channel comprises reliability description information on that HARQ retransmission needs to be performed for a target address or a target service, and the processor is specifically configured to: detect whether reliability requirement of the data to be transmitted meets the reliability description information on that HARQ retransmission needs to be performed for a target address or a target service; determine, if yes, to perform HARQ retransmission for the data to be transmitted; and determine, if no, not to perform HARQ retransmission for the data to be transmitted, or

the indication with respect to the logical channel comprises a network environment indicator threshold corresponding to a situation where HARQ retransmission needs to be performed, and the processor is specifically configured to: detect whether a network environment indicator value when the data to be transmitted is sent exceeds the network environment indicator threshold corresponding to the situation where HARQ retransmission needs to be performed; determine, if yes, to perform HARQ retransmission for the data to be transmitted; and determine, if no, not to perform HAQR retransmission for the data to be transmitted.

9. A non-transitory computer storage medium storing a data transmission program, the data transmission program being executed by at least one processor to implement steps comprising:

acquiring configuration information from a network side device;

determining whether a hybrid automatic repeat request (HARQ) retransmission needs to be performed based on the configuration information;

after determining that the HARQ retransmission needs to be performed, sending, to a receiving end UE, a HARQ transmission mode of data to be transmitted through a physical sidelink control channel (PSCCH) and/or a physical sidelink shared channel (PSSCH), wherein the HARQ transmission mode comprises a first mode without requiring feedback or a second mode requiring feedback; and

transmitting, according to the HARQ transmission mode, the data to be transmitted to the receiving end UE,

wherein the configuration information comprises an indication with respect to a logical channel,

the indication with respect to the logical channel comprises reliability description information on that HARQ retransmission needs to be performed for a target address or a target service, and determining whether HARQ retransmission needs to be performed based on the configuration information comprises: detecting whether reliability requirement of the data to be transmitted meets the reliability description information on that HARQ retransmission needs to be performed for a target address or a target service; determining, if yes, to perform HARQ retransmission for the data to be transmitted; and determining, if no, not to perform HARQ retransmission for the data to be transmitted, or

the indication with respect to the logical channel comprises a network environment indicator threshold corresponding to a situation where HARQ retransmission needs to be performed, and determining whether HARQ retransmission needs to be performed based on the configuration information comprises: detecting whether a network environment indicator value when the data to be transmitted is sent exceeds the network environment indicator threshold corresponding to the situation where HARQ retransmission needs to be performed; determining, if yes, to perform HARQ retransmission for the data to be transmitted; and determining, if no, not to perform HAQR retransmission for the data to be transmitted.

10. The transmitting end UE according to claim 8 , wherein the indication with respect to the logical channel comprises: an indication that HARQ retransmission needs to be performed for a target service, or an indication that HARQ retransmission needs to be performed for a target address.

11. The transmitting end UE according to claim 8 , wherein the indication with respect to the logical channel comprises at least one of an indication on whether HARQ retransmission needs to be performed; or an indication of reliability description information.