IP Library › Granted Patent US 12,484,002
Granted Patent B2
US 12,484,002 · App. 18/658,272 · Granted Nov 25, 2025

Synchronization signal block transmission method and apparatus

Inventors: Pu Yuan (Shenzhen, CN); Chao Li (Beijing, CN)
Assignee: Huawei Technologies Co., Ltd.
H04W56/001
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Quick Facts
Patent No.
US 12,484,002
App. No.
18/658,272
Granted
Nov 25, 2025
Kind
B2
Abstract

A method includes: A first terminal device generates a sidelink synchronization signal block and sends the sidelink synchronization signal block to a second terminal device, where the sidelink synchronization signal block includes a PSBCH, an SPSS, and an SSSS, where the PSBCH includes M OFDM symbols in time domain, the PSBCH includes a DMRS, the DMRS includes K OFDM symbols of the M OFDM symbols in time domain, and the DMRS is mapped at an interval of n−1 subcarriers in frequency domain; and the SPSS or the SSSS includes 2 OFDM symbols in time domain, and the PSBCH, the SPSS and the SSSS includes N RBs in frequency domain; includes N RBs in frequency domain.

Claims (34)

1 . A method comprising:

generating a sidelink synchronization signal block; and

sending the sidelink synchronization signal block, wherein the sidelink synchronization signal block comprises a physical sidelink broadcast channel (PSBCH), a sidelink primary synchronization signal (SPSS), and a sidelink secondary synchronization signal (SSSS), and wherein:

the PSBCH occupies M orthogonal frequency division multiplexing (OFDM) symbols of OFDM symbols occupied by the sidelink synchronization signal block in time domain, a demodulation reference signal (DMRS) occupies every OFDM symbol of the M OFDM symbols in the time domain, and the DMRS is mapped to frequency domain with an interval of n−1 subcarriers between adjacent subcarriers occupied by the PSBCH, wherein n is an integer greater than or equal to 1, M is an integer greater than or equal to 6, and the PSBCH occupies 132 subcarriers in the frequency domain; and

the SPSS occupies 2 OFDM symbols in the time domain and 127 subcarriers in the frequency domain, and the SSSS occupies 2 OFDM symbols in the time domain and 127 subcarriers in the frequency domain.

2 . The method according to claim 1 , wherein the sidelink synchronization signal block occupies 11 OFDM symbols in time domain.

3 . The method according to claim 1 , wherein n is equal to 4.

4 . The method according to claim 1 , wherein the SSSS is generated by interleaving two M sequences.

5 . A method comprising:

receiving a sidelink synchronization signal block, wherein the sidelink synchronization signal block comprises a physical sidelink broadcast channel (PSBCH), a sidelink primary synchronization signal (SPSS), and a sidelink secondary synchronization signal (SSSS); and

parsing the sidelink synchronization signal block, wherein:

the PSBCH occupies M orthogonal frequency division multiplexing (OFDM) symbols of OFDM symbols occupied by the sidelink synchronization signal block in time domain, a demodulation reference signal (DMRS) occupies every OFDM symbol of the M OFDM symbols in the time domain, and the DMRS is mapped to frequency domain with an interval of n−1 subcarriers between adjacent subcarriers occupied by the PSBCH, wherein n is an integer greater than or equal to 1, M is an integer greater than or equal to 6, and the PSBCH occupies 132 subcarriers in the frequency domain; and

the SPSS occupies 2 OFDM symbols in the time domain and 127 subcarriers in the frequency domain, and the SSSS occupies 2 OFDM symbols in the time domain and 127 subcarriers in the frequency domain.

6 . The method according to claim 5 , wherein the sidelink synchronization signal block occupies 11 OFDM symbols in time domain.

7 . The method according to claim 5 , wherein the n is equal to 4.

8 . The method according to claim 5 , wherein the SSSS is generated by interleaving two M sequences.

9 . A wireless apparatus, comprising:

one or more processors, configured to execute operations comprising:

generating a sidelink synchronization signal block; and

sending the sidelink synchronization signal block to a second terminal device, wherein the sidelink synchronization signal block comprises a physical sidelink broadcast channel (PSBCH), a sidelink primary synchronization signal (SPSS), and a sidelink secondary synchronization signal (SSSS), and wherein:

the PSBCH occupies M orthogonal frequency division multiplexing (OFDM) symbols of OFDM symbols occupied by the sidelink synchronization signal block in time domain, a demodulation reference signal (DMRS) occupies every OFDM symbol of the M OFDM symbols in the time domain, and the DMRS is mapped to frequency domain at with interval of n−1 subcarriers between adjacent subcarriers occupied by the PSBCH, wherein n is an integer greater than or equal to 1, M is an integer greater than or equal to 6, and the PSBCH occupies 132 subcarriers in the frequency domain; and

the SPSS occupies 2 OFDM symbols in the time domain and 127 subcarriers in the frequency domain, and the SSSS occupies 2 OFDM symbols in the time domain and 127 subcarriers in the frequency domain.

10 . The apparatus according to claim 9 , wherein the sidelink synchronization signal block occupies 11 OFDM symbols in time domain.

11 . The apparatus according to claim 9 , wherein the n is equal to 4.

12 . The apparatus according to claim 9 , wherein the SSSS is generated by interleaving two M sequences.

13 . A wireless apparatus, comprising:

one or more processors, configured to execute operations comprising:

receiving a sidelink synchronization signal block from a first terminal device, wherein the sidelink synchronization signal block comprises a physical sidelink broadcast channel (PSBCH), a sidelink primary synchronization signal (SPSS), and a sidelink secondary synchronization signal (SSSS); and

parsing the sidelink synchronization signal block, wherein:

the PSBCH occupies M orthogonal frequency division multiplexing (OFDM) symbols of OFDM symbols occupied by the sidelink synchronization signal block in time domain, a demodulation reference signal (DMRS) occupies every OFDM symbol of the M OFDM symbols in the time domain, and the DMRS is mapped to frequency domain with an interval of n−1 subcarriers between adjacent subcarriers occupied by the PSBCH, wherein n is an integer greater than or equal to 1, M is an integer greater than or equal to 6, and the PSBCH occupies 132 subcarriers in the frequency domain; and

the SPSS occupies 2 OFDM symbols in the time domain and 127 subcarriers in the frequency domain, and the SSSS occupies 2 OFDM symbols in the time domain and 127 subcarriers in the frequency domain.

14 . The apparatus according to claim 13 , wherein the sidelink synchronization signal block occupies 11 OFDM symbols in time domain.

15 . The apparatus according to claim 13 , wherein n is equal to 4.

16 . The apparatus according to claim 13 , wherein the SSSS is generated by interleaving two M sequences.

Priority Claims (1)
CN 201910361704.4 · Apr 30, 2019 · national
Continuity (3)
Continuation 17452879 · Oct 29, 2021
Continuation PCTCN2020083261 · Apr 3, 2020
Related Publication 20240292350A1 · Aug 29, 2024
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