Sidelink transmission method, and terminal and computer-readable storage medium

Patent metadata

Field	Value
Publication number	US-2021410112-A1
Application number	US-201917289692-A
Country	US
Kind code	A1
Filing date	Oct 14, 2019
Priority date	Nov 2, 2018
Publication date	Dec 30, 2021
Grant date	—

Abstract

Disclosed are a sidelink transmission method, and a terminal and a computer-readable storage medium. The method comprises: acquiring a time domain resource, on a sidelink, for transmission; and taking a preset position on the time domain resource as a time domain sending position of sidelink control information, and sending the sidelink control information on the sidelink. The application of the above-mentioned solution enables a receiving terminal to determine the specific sending position, on the time domain resource, of the sidelink control information, and can reduce the complexity of a blind test of the receiving terminal, improve receiving efficiency and reduce the power consumption of the receiving terminal.

First claim

1 . A sidelink transmission method, comprising:
acquiring a time-frequency resource for transmission on a sidelink; and taking a preset position on the time-frequency resource as a time domain transmission position of sidelink control information, and transmitting the sidelink control information on the sidelink.

2 . The sidelink transmission method according to claim 1 , wherein the preset position comprises a first preset position or a second preset position, and taking a preset position on the time-frequency resource as a time domain transmission position of sidelink control information comprises:
determining that the preset position is the first preset position or the second preset position based on a time when the time-frequency resource is successfully acquired, wherein a start position of the first preset position is earlier than a start position of the second preset position in a time domain.

3 . The sidelink transmission method according to claim 2 , wherein a time domain length of the time-frequency resource is a resource selection time domain unit, and a frequency domain length of the time-frequency resource is at least one sub-channel, wherein the resource selection time domain unit comprises one time slot, a plurality of time slots or a plurality of symbols, and the sub-channel comprises at least one frequency domain resource block.

4 . The sidelink transmission method according to claim 3 , wherein the first preset position is first L symbols in the resource selection time domain unit, wherein L is a time domain length of the sidelink control information, and is a positive integer less than or equal to a total number of symbols in the resource selection time domain unit.

5 . The sidelink transmission method according to claim 3 , wherein the first preset position is the second to (L+1) th symbols in the resource selection time domain unit, wherein L is a time domain length of the sidelink control information and is a positive integer, and (L+1) is less than or equal to a total number of symbols in the resource selection time domain unit.

6 . The sidelink transmission method according to claim 3 , wherein the second preset position is the (W+1) th to (W+L) th symbols in the resource selection time domain unit, wherein the W th symbol is an end symbol of a time window in the resource selection time domain unit, L is a time domain length of the sidelink control information, W and L are both positive integers, (W+L) is less than or equal to a total number of symbols in the resource selection time domain unit, the time window is a maximum length of time allowed for resource awareness in the resource selection time domain unit, and a start symbol of the time window is a start symbol of the resource selection time domain unit.

7 . The sidelink transmission method according to claim 3 , wherein the second preset position is the (W+2) th to (W+L+1) th symbols in the resource selection time domain unit, wherein (W+L+1) is less than or equal to a total number of symbols in the resource selection time domain unit, L is a time domain length of the sidelink control information, and W and L are both positive integers.

8 . The sidelink transmission method according to claim 2 , wherein determining that the preset position is the first preset position or the second preset position based on a time when the time-frequency resource is successfully acquired comprises:
if the time when the time-frequency resource is successfully acquired is later than a start time of the first preset position, determining that the preset position is the second preset position; or if the time when the time-frequency resource is successfully acquired is earlier than or is the start time of the first preset position, determining that the preset position is the first preset position.

9 . The sidelink transmission method according to claim 8 , wherein when the preset position is the second preset position, the method further comprises:
transmitting sidelink data corresponding to the sidelink control information at a start time of a first symbol or a second symbol after the time-frequency resource is successfully acquired within a time window where the time-frequency resource is acquired.

10 . (canceled)

11 . (canceled)

12 . A terminal, comprising:
an acquiring circuitry configured to acquire a time-frequency resource for transmission on a sidelink; and a first transmitting circuitry configured to: take a preset position on the time-frequency resource as a time domain transmission position of sidelink control information, and transmit the sidelink control information on the sidelink.

13 . The terminal according to claim 12 , wherein the preset position comprises a first preset position or a second preset position, and the first transmitting circuitry is configured to determine that the preset position is the first preset position or the second preset position based on a time when the time-frequency resource is successfully acquired, wherein a start position of the first preset position is earlier than a start position of the second preset position in a time domain.

14 . The terminal according to claim 13 , wherein a time domain length of the time-frequency resource is a resource selection time domain unit, and a frequency domain length of the time-frequency resource is at least one sub-channel, wherein the resource selection time domain unit comprises one time slot, a plurality of time slots or a plurality of symbols, and the sub-channel comprises at least one frequency domain resource block.

15 . The terminal according to claim 14 , wherein the first preset position is first L symbols in the resource selection time domain unit, wherein L is a time domain length of the sidelink control information, and is a positive integer less than or equal to a total number of symbols in the resource selection time domain unit.

16 . The terminal according to claim 14 , wherein the first preset position is the second to (L+1) th symbols in the resource selection time domain unit, wherein L is a time domain length of the sidelink control information and is a positive integer, and (L+1) is less than or equal to a total number of symbols in the resource selection time domain unit.

17 . The terminal according to claim 14 , wherein the second preset position is the (W+1) th to (W+L) th symbols in the resource selection time domain unit, wherein the W th symbol is an end symbol of a time window in the resource selection time domain unit, L is a time domain length of the sidelink control information, W and L are both positive integers, (W+L) is less than or equal to a total number of symbols in the resource selection time domain unit, the time window is a maximum length of time allowed for resource awareness in the resource selection time domain unit, and a start symbol of the time window is a start symbol of the resource selection time domain unit.

18 . The terminal according to claim 14 , wherein the second preset position is the (W+2) th to (W+L+1) th symbols in the resource selection time domain unit, wherein (W+L+1) is less than or equal to a total number of symbols in the resource selection time domain unit, L is a time domain length of the sidelink control information, and W and L are both positive integers.

19 . The terminal according to claim 13 , wherein the first transmitting circuitry is configured to:
if the time when the time-frequency resource is successfully acquired is later than a start time of the first preset position, determine that the preset p

Assignees

• Beijing Unisoc Comm Tech Co Ltd

Inventors

• Qu Xin

Classifications

• H04W72/20 Primary

  Control channels or signalling for resource management · CPC title

• H04W72/0453

  Resources in frequency domain, e.g. a carrier in FDMA · CPC title

• H04W72/0446

  Resources in time domain, e.g. slots or frames · CPC title

• H04W72/02 Primary

  Selection of wireless resources by user or terminal · CPC title

• H04L5/0007

  the frequencies being orthogonal, e.g. OFDM(A) or DMT · CPC title