Transmission collision resolving method and apparatus, and terminal and storage medium

Patent metadata

Field	Value
Publication number	US-12477575-B2
Application number	US-201917774137-A
Country	US
Kind code	B2
Filing date	Nov 6, 2019
Priority date	Nov 6, 2019
Publication date	Nov 18, 2025
Grant date	Nov 18, 2025

Abstract

Disclosed are a transmission collision resolving method, relating to the technical field of communications. The method comprises: when two uplink transmissions collide on a time domain, determining, from among the two uplink transmissions, a first uplink transmission with a higher priority and a second uplink transmission with a lower priority; performing first LBT on the first uplink transmission; and deciding, according to a first LBT result of the first uplink transmission, whether to perform the second uplink transmission.

First claim

What is claimed is:

1 . A transmission collision resolving method, comprising:
determining, by a terminal, a first uplink transmission with a higher priority and a second uplink transmission with a lower priority among two uplink transmissions, in response to determining that the two uplink transmissions collide on a time domain; prioritizing, by the terminal, a first listen-before-talk (LBT) on the first uplink transmission; and determining whether to perform the second uplink transmission according to a first LBT result of the first uplink transmission, wherein the two uplink transmissions comprise: a first physical uplink shared channel (PUSCH) and a first physical uplink control channel (PUCCH); or the first PUSCH and a second PUSCH; or a first dynamic scheduling and a second dynamic scheduling; or the first dynamic scheduling and a first semi-static scheduling; or the first semi-persistent scheduling and a second semi-persistent scheduling; or a random access channel and the first PUSCH; or the random access channel and the first PUCCH.

2 . The method according to claim 1 , wherein determining whether to perform the second uplink transmission according to the first LBT result of the first uplink transmission comprises:
performing the first uplink transmission and cancelling the second uplink transmission in response to determining that the first LBT of the first uplink transmission succeeds.

3 . The method according to claim 1 , wherein determining whether to perform the second uplink transmission according to the first LBT result of the first uplink transmission comprises:
performing a second LBT on the second uplink transmission in response to determining that the first LBT of the first uplink transmission fails; performing the second uplink transmission in response to determining that the second LBT of the second uplink transmission succeeds.

4 . The method according to f claim 1 , further comprising:
determining whether to perform the second uplink transmission according to the first LBT result of the first uplink transmission, in response to determining that an initial transmission time t 1 of the first uplink transmission is before an initial transmission time t 2 of the second uplink transmission.

5 . The method according to claim 1 , further comprising:
determining whether to perform the second uplink transmission according to the first LBT result of the first uplink transmission, in response to determining that an initial transmission time t 1 of the first uplink transmission is before an initial transmission time t 2 of the second uplink transmission, and t 2 −t 1 is smaller than a first threshold d 1 .

6 . The method according to claim 1 , further comprising:
cancelling the second uplink transmission in response to determining that an initial transmission time t 1 of the first uplink transmission is after an initial transmission time t 2 of the second uplink transmission.

7 . The method according to claim 1 , further comprising:
cancelling the second uplink transmission in response to determining that an initial transmission time t 1 of the first uplink transmission is after an initial transmission time t 2 of the second uplink transmission, and t 1 −t 2 is greater than a second threshold d 2 .

8 . The method according to claim 1 , wherein the method is applied in the terminal, and the terminal comprises a medium access control (MAC) layer and a physical layer, and the method further comprises:
generating, by the MAC layer, a first Medium Access Control Protocol Data Unit (MAC PDU) corresponding to the first uplink transmission, and a second MAC PDU corresponding to the second uplink transmission, and submitting, by the MAC layer, the first MAC PDU and the second MAC PDU to the physical layer.

9 . The method according to claim 1 , wherein the method is applied in the terminal, and the terminal comprises a medium access control (MAC) layer and a physical layer, and wherein determining the first uplink transmission with a higher priority and the second uplink transmission with a lower priority among the two uplink transmissions comprises:
indicating, by the MAC layer, priorities of the two uplink transmissions to the physical layer; determining, by the physical layer, the first uplink transmission with a higher priority and the second uplink transmission with a lower priority according to the priorities of the two uplink transmissions.

10 . The method according to claim 1 , wherein the method is applied in the terminal, and the terminal comprises a medium access control (MAC) layer and a physical layer, and determining whether to perform the second uplink transmission according to a first LBT result of the first uplink transmission comprises:
indicating, by the physical layer, the first LBT result of the first uplink transmission to the MAC layer; determining, by the MAC layer, whether to perform the second uplink transmission according to the first LBT result of the first uplink transmission.

11 . The method according to claim 7 , wherein the method is applied in the terminal, and the terminal comprises a medium access control (MAC) layer, and cancelling the second uplink transmission comprises:
not generating, by the MAC layer, a second MAC PDU in response to determining that the second MAC PDU of the second uplink transmission has not been generated.

12 . The method according to claim 7 , wherein the method is applied in the terminal, and the terminal comprises a medium access control (MAC) layer and a physical layer, and cancelling the second uplink transmission comprises:
cancelling, by the physical layer, sending of a second MAC PDU, in response to determining that the second MAC PDU of the second uplink transmission has been generated by the MAC layer.

13 . A terminal, comprising:
a processor; a transceiver connected to the processor; and a memory for storing instructions executable by the processor, wherein, the processor is configured to load and execute the executable instructions to: determine a first uplink transmission with a higher priority and a second uplink transmission with a lower priority among two uplink transmissions, in response to determining that the two uplink transmissions collide on a time domain; prioritize a first listen-before-talk (LBT) on the first uplink transmission; and determine whether to perform the second uplink transmission according to a first LBT result of the first uplink transmission, wherein the two uplink transmissions comprise: a first physical uplink shared channel (PUSCH) and a first physical uplink control channel (PUCCH); or the first PUSCH and a second PUSCH; or a first dynamic scheduling and a second dynamic scheduling; or the first dynamic scheduling and a first semi-static scheduling; or the first semi-persistent scheduling and a second semi-persistent scheduling; or a random access channel and the first PUSCH; or the random access channel and the first PUCCH.

14 . A non-transitory computer-readable storage medium, wherein executable instructions are stored in the readable storage medium, and the executable instructions are loaded and executed by a processor to implement:
determining a first uplink transmission with a higher priority and a second uplink transmission with a lower priority among two uplink transmissions, in response to determining that the two uplink transmissions collide on a time domain; prioritizing a first listen-before-talk (LBT) on the first uplink transmission; and determining whether to perform the second uplink transmission according to a fi

Assignees

• Beijing Xiaomi Mobile Software Co Ltd

Inventors

• Jiang Xiaowei

Classifications

• H04W74/0808 Primary

  using carrier sensing, e.g. carrier sense multiple access [CSMA] · CPC title

• H04W72/56 Primary

  based on priority criteria · CPC title

• H04W74/0841 Primary

  with collision treatment · CPC title