Data transmission method, apparatus, and storage medium
Provided are a data transmission method and apparatus and a storage medium. The method includes: in a case where a user equipment (UE) determines that the UE is incapable of simultaneously transmitting uplink (UL) traffic and sidelink (SL) traffic, comparing a priority of a UL channel with a priority of an SL channel, and transmitting traffic according to a comparison result.
1. A data transmission method, comprising:
in a case where a user equipment (UE) determines that the UE is incapable of simultaneously transmitting uplink (UL) traffic and sidelink (SL) traffic, comparing a priority of a UL channel with a priority of an SL channel; and
transmitting, by the UE, traffic according to a comparison result;
wherein transmitting, by the UE, the traffic according to the comparison result comprises: in a case where the comparison result is that the priority of the SL channel is higher than the priority of the UL channel, transmitting, by the UE, the SL traffic;
wherein the priority of the SL channel being higher than the priority of the UL channel comprises that: a logical channel priority of the SL channel is higher than a logical channel priority of the UL channel;
wherein the logical channel priority of the SL channel being higher than the logical channel priority of the UL channel comprises: a value of the logical channel priority of the SL channel being less than a value of the logical channel priority of the UL channel and a value of a priority of a media access control (MAC) control element (CE);
wherein the value of the priority of the MAC CE is acquired in the following manner:
receiving, by the UE, the value of the priority of the MAC CE sent by a network side through a system message or a radio resource control (RRC) message, wherein the value of the priority of the MAC CE comprises a value of a priority of each MAC CE of N MAC CEs, a value of a priority uniformly configured by the network side for N MAC CEs, a value of a priority configured by the network side for a non-padding MAC CE, or a value of a priority configured by the network side for a padding MAC CE, wherein N is a natural number.
2. The data transmission method of claim 1 , wherein the logical channel priority of the SL channel being higher than the logical channel priority of the UL channel further comprises at least one of the following:
a value of the logical channel priority of the SL channel being less than a value of the logical channel priority of the UL channel;
a value of the logical channel priority of the SL channel being less than a first threshold and the value of the logical channel priority of the SL channel being less than a value of the logical channel priority of the UL channel;
a value of the logical channel priority of the UL channel being greater than a second threshold and a value of the logical channel priority of the SL channel being less than a first threshold;
a value of the logical channel priority of the UL channel being greater than a second threshold and a latency parameter of an SL packet being less than a first latency threshold.
3. The data transmission method of claim 2 , wherein the first latency threshold is acquired in the following manner:
receiving, by the UE, the first latency threshold sent by the network side through a system message or an RRC message.
4. The data transmission method of claim 2 , further comprising: receiving, by the UE, the first threshold, the second threshold, the third threshold or the fourth threshold sent by a network side through a system message or an RRC message.
5. The data transmission method of claim 1 , wherein in a case where a MAC protocol data unit (PDU) of the UE comprises no MAC CE, the logical channel priority of the SL channel being higher than the logical channel priority of the UL channel comprises at least one of the following:
a value of the logical channel priority of the SL channel being greater than a first threshold and the value of the logical channel priority of the SL channel being less than a value of the logical channel priority of the UL channel; or
a latency parameter of an SL packet being greater than a first latency threshold and a value of the logical channel priority of the SL channel being less than a value of the logical channel priority of the UL channel.
6. The data transmission method of claim 5 , further comprising: receiving, by the UE, the first threshold, the second threshold, the third threshold or the fourth threshold sent by a network side through a system message or an RRC message.
7. The data transmission method of claim 1 , wherein the priority of the SL channel being higher than the priority of the UL channel comprises:
a priority of SL MAC PDU retransmission traffic being higher than a priority of UL MAC PDU initial transmission traffic;
wherein the SL MAC PDU retransmission traffic is transmitted on the SL channel and the UL MAC PDU initial transmission traffic is transmitted on the UL channel.
8. The data transmission method of claim 7 , wherein the priority of the SL MAC PDU retransmission traffic being higher than the priority of the UL MAC PDU initial transmission traffic comprises at least one of the following:
a value of a logical channel priority of the SL channel being less than a first threshold and a value of a logical channel priority of the UL channel being greater than a third threshold;
a value of a priority of the SL MAC PDU retransmission traffic being less than a fourth threshold; or
receiving, by the UE, an indication message sent by a network side through a system message or an RRC message, wherein the indication message indicates that the priority of the SL MAC PDU retransmission traffic is higher than the priority of the UL MAC PDU initial transmission traffic.
9. The data transmission method of claim 8 , further comprising: receiving, by the UE, the first threshold, the second threshold, the third threshold or the fourth threshold sent by a network side through a system message or an RRC message.
10. The data transmission method of claim 1 , wherein in a case where the SL traffic comprises Long Term Evolution (LTE) SL traffic and New Radio (NR) SL traffic, the method further comprises:
in a case where a value of a logical channel priority in an LTE SL MAC PDU is less than a value of a logical channel priority in an NR SL MAC PDU, transmitting preferentially, by the UE, the LTE SL traffic.
11. The data transmission method of claim 1 , wherein in a case where the UE accesses a plurality of cells in a multi-connection manner, the method further comprises:
in a case where the UE determines that a value of a logical channel priority in an LTE SL MAC PDU is less than an LTE threshold, transmitting preferentially, by the UE, the LTE SL traffic; and
in a case where the UE determines that a value of a logical channel priority in an NR SL MAC PDU is less than an NR threshold, transmitting preferentially, by the UE, the NR SL traffic;
wherein the LTE threshold and the NR threshold are sent by a network side through a system message or an RRC message to the UE.
12. The data transmission method of claim 1 , wherein in a case where the UE does not configure a logical channel priority of the SL channel, the method further comprises:
receiving, by the UE, a correspondence, sent by the network side through a system message or an RRC message, between a PC5 Quality of Service (QOS) flow identifier/PC5 5th generation mobile communication technology (5G) QOS identifier (PFI/PQI) and a logical channel priority; and
determining, by the UE, the logical channel priority of the SL channel according to the correspondence.
13. The data transmission method of claim 1 , further comprising: in a case where the comparison result is that the priority of the SL channel is equal to the priority of the UL channel, selecting, by the UE, one of the SL channel or the UL channel to transmit the traffic; or comparing by the UE based on at least one of a resource type, a packet error rate or a packet latency parameter, the priority of the SL channel with the priority of the UL channel.
14. A non-transitory computer-readable storage medium storing a computer program, wherein the computer program, when executed by a processor, implements the data transmission method of claim 1 .
15. A data transmission device, comprising a memory and a processor, wherein the memory stores a program which, when read and executed by the processor, causes the processor to perform:
in a case where a user equipment (UE) determines that the UE is incapable of simultaneously transmitting uplink (UL) traffic and sidelink (SL) traffic, comparing a priority of a UL channel with a priority of an SL channel; and
transmitting, by the UE, traffic according to a comparison result;
wherein transmitting, by the UE, the traffic according to the comparison result comprises:
in a case where the comparison result is that the priority of the SL channel is higher than the priority of the UL channel, transmitting, by the UE, the SL traffic;
wherein the priority of the SL channel being higher than the priority of the UL channel comprises that: a logical channel priority of the SL channel is higher than a logical channel priority of the UL channel;
wherein the logical channel priority of the SL channel being higher than the logical channel priority of the UL channel comprises: a value of the logical channel priority of the SL channel being less than a value of the logical channel priority of the UL channel and a value of a priority of a media access control (MAC) control element (CE);
wherein the value of the priority of the MAC CE is acquired in the following manner:
receiving, by the UE, the value of the priority of the MAC CE sent by a network side through a system message or a radio resource control (RRC) message, wherein the value of the priority of the MAC CE comprises a value of a priority of each MAC CE of N MAC CEs, a value of a priority uniformly configured by the network side for N MAC CEs, a value of a priority configured by the network side for a non-padding MAC CE, or a value of a priority configured by the network side for a padding MAC CE, wherein N is a natural number.
16. The data transmission device of claim 15 , wherein the logical channel priority of the SL channel being higher than the logical channel priority of the UL channel further comprises at least one of the following:
a value of the logical channel priority of the SL channel being less than a value of the logical channel priority of the UL channel;
a value of the logical channel priority of the SL channel being less than a first threshold and the value of the logical channel priority of the SL channel being less than a value of the logical channel priority of the UL channel;
a value of the logical channel priority of the UL channel being greater than a second threshold and a value of the logical channel priority of the SL channel being less than a first threshold;
a value of the logical channel priority of the UL channel being greater than a second threshold and a latency parameter of an SL packet being less than a first latency threshold;
a latency parameter of an SL packet being less than a first latency threshold and a value of the logical channel priority of the SL channel being less than a value of the logical channel priority of the UL channel; or
a value of the logical channel priority of the SL channel being less than a first threshold.
17. The data transmission device of claim 16 , wherein the communication module is configured to receive the first latency threshold sent by the network side through a system message or an RRC message.
18. The data transmission device of claim 15 , wherein in a case where a MAC protocol data unit (PDU) of the UE comprises no MAC CE, the logical channel priority of the SL channel being higher than the logical channel priority of the UL channel comprises at least one of the following:
a value of the logical channel priority of the SL channel being greater than a first threshold and the value of the logical channel priority of the SL channel being less than a value of the logical channel priority of the UL channel; or
a latency parameter of an SL packet being greater than a first latency threshold and a value of the logical channel priority of the SL channel being less than a value of the logical channel priority of the UL channel.
19. The data transmission device of claim 15 , wherein the priority of the SL channel being higher than the priority of the UL channel comprises:
a priority of SL MAC PDU retransmission traffic being higher than a priority of UL MAC PDU initial transmission traffic;
wherein the SL MAC PDU retransmission traffic is transmitted on the SL channel and the UL MAC PDU initial transmission traffic is transmitted on the UL channel.
20. The data transmission device of claim 19 , wherein the priority of the SL MAC PDU retransmission traffic being higher than the priority of the UL MAC PDU initial transmission traffic comprises at least one of the following:
a value of a logical channel priority of the SL channel being less than a first threshold and a value of a logical channel priority of the UL channel being greater than a third threshold;
a value of a priority of the SL MAC PDU retransmission traffic being less than a fourth threshold; or
receiving, by the UE, an indication message sent by a network side through a system message or an RRC message, wherein the indication message indicates that the priority of the SL MAC PDU retransmission traffic is higher than the priority of the UL MAC PDU initial transmission traffic.