Sidelink communication method and terminal device
View Patent ↗The present application relates to a sidelink communication method and a terminal device. The sidelink communication method comprises: a sidelink signal sent by a sending end TX occupying interlace resources, wherein one interlace resource comprises a plurality of physical resource blocks (PRBs) with specific intervals on a frequency domain; and a frequency domain bandwidth occupied by one interlace resource is not less than a specific proportion of a channel bandwidth. A sidelink signal sent in the embodiments of the present application occupies the interlace resources, such that the sidelink signal sent by the sending end occupies a certain channel bandwidth on the frequency domain to prevent devices, which work on the same unlicensed frequency band, from performing channel listening on the current time-frequency resource, thereby preventing a plurality of devices from sending sidelink signals on the same time-frequency resource, and reducing the interference of sidelink communication.
1 . A sidelink communication method, comprising:
sending, by a Transmitter (TX), a sidelink signal occupying an interleaved resource, wherein one interleaved resource comprises a plurality of Physical Resource Blocks (PRBs) with a specific interval in frequency domain, and a frequency domain bandwidth occupied by one interleaved resource is not less than a specific proportion of a channel bandwidth, wherein
one interleaved resource comprises F PRBs with a starting point of f and an interval of k PRBs, where 0≤f<k, and F is a maximum integer rendering f+F*k to be not greater than the channel bandwidth W; and
a value of k corresponds to a Sub-Carrier Space (SCS).
2 . The method according to claim 1 , wherein the sidelink signal comprises a Physical Sidelink Control Channel (PSCCH) and a Physical Sidelink Shared Channel (PSSCH).
3 . The method according to claim 2 , wherein
N consecutive Orthogonal Frequency Division Multiplexing (OFDM) symbols starting from an n-th OFDM symbol within one slot are used for the PSCCH; and
if a Receiver (RX) does not need to perform Automatic Gain Control (AGC), n=0; and otherwise, n=1, where N is a positive integer.
4 . The method according to claim 2 , wherein
if the PSCCH is sent starting from an OFDM symbol with an index of 1, an OFDM symbol with an index of 0 is used for sending the PSSCH, or used for repeatedly sending the same PSCCH as the PSCCH on the OFDM symbol with the index of 1.
5 . The method according to claim 2 , wherein the PSCCH and the PSSCH are multiplexed by means of time division in the same slot.
6 . The method according to claim 5 , wherein the PSCCH occupies at least one interlaced resource.
7 . The method according to claim 5 , wherein the PSCCH occupies at least one PRB of one interlaced resource.
8 . The method according to claim 2 , wherein the PSCCH and the PSSCH are multiplexed by means of frequency division.
9 . The method according to claim 8 , wherein the PSCCH occupies at least one interleaved resource within one slot.
10 . The method according to claim 8 , wherein
the PSCCH occupies at least one PRB in a resource pool comprising at least one interleaved resource.
11 . The method according to claim 8 , wherein the PSCCH is multiplexed with the PSSCH by means of frequency division on part of the OFDM symbols available for sidelink communication in one slot.
12 . A terminal device, comprising: a processor and a memory, wherein the memory is configured to store a computer program, and the processor is configured to call and run the computer program stored in the memory, so that the terminal device is caused to perform a sidelink communication method, comprising:
sending a sidelink signal occupying an interleaved resource, wherein one interleaved resource comprises a plurality of Physical Resource Blocks (PRBs) with a specific interval in frequency domain, and a frequency domain bandwidth occupied by one interleaved resource is not less than a specific proportion of a channel bandwidth; wherein
one interleaved resource comprises F PRBs with a starting point of f and an interval of k PRBs, where 0≤f<k, and F is a maximum integer rendering f+F*k to be not greater than the channel bandwidth W; and
a value of k corresponds to a Sub-Carrier Space (SCS).
13 . The terminal device according to claim 12 , wherein the sidelink signal comprises a Physical Sidelink Control Channel (PSCCH) and a Physical Sidelink Shared Channel (PSSCH).
14 . The terminal device according to claim 13 , wherein
N consecutive Orthogonal Frequency Division Multiplexing (OFDM) symbols starting from an n-th OFDM symbol within one slot are used for the PSCCH; and
if a Receiver (RX) does not need to perform Automatic Gain Control (AGC), n=0; and otherwise, n=1, where N is a positive integer.
15 . The terminal device according to claim 13 , wherein
if the PSCCH is sent starting from an OFDM symbol with an index of 1, an OFDM symbol with an index of 0 is used for sending the PSSCH, or used for repeatedly sending the same PSCCH as the PSCCH on the OFDM symbol with the index of 1.
16 . The terminal device according to claim 13 , wherein the PSCCH and the PSSCH are multiplexed by means of time division in the same slot.
17 . The terminal device according to claim 16 , wherein the PSCCH occupies at least one interlaced resource.
18 . The terminal device according to claim 16 , wherein the PSCCH occupies at least one PRB of one interlaced resource.
19 . The terminal device according to claim 13 , wherein the PSCCH and the PSSCH are multiplexed by means of frequency division.
20 . The terminal device according to claim 19 , wherein the PSCCH occupies at least one interleaved resource within one slot.