IP Library › Granted Patent US 12,309,087
Granted Patent B2
US 12,309,087 · App. 17/881,329 · Granted May 20, 2025

Identifying time domain positions of demodulation reference signals (DMRS) within resources for physical sidelink shared channel (PSSCH) transmission

Inventors: Zhenshan Zhao (Dongguan, CN); Qianxi Lu (Dongguan, CN)
Assignee: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD.
H04L5/0048H04W72/0446H04W4/46
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Quick Facts
Patent No.
US 12,309,087
App. No.
17/881,329
Granted
May 20, 2025
Kind
B2
Abstract

A demodulation reference signal (DMRS) configuration method includes: a first device determines, according to a number of time domain symbols occupied by resources for transmitting a Physical Sidelink Share Channel (PSSCH) in one time slot, time domain positions of one or more DMRSs in the resources for transmitting the PSSCH, where the time domain positions of the one or more DMRSs in the resources for transmitting the PSSCH include: the DMRSs are located at a first time domain symbol and a last time domain symbol of the resources for transmitting the PSSCH; or the DMRS is located at a time domain symbol at a middle position of the resources for transmitting the PSSCH; or the DMRS is located at the first time domain symbol of the resources for transmitting the PSSCH.

Claims (41)

1. A Demodulation Reference Signal (DMRS) configuration method, comprising:

determining, by a first device according to a number of time domain symbols occupied by resources for transmitting a Physical Sidelink Share Channel (PSSCH) in one time slot, time domain positions of one or more DMRSs in the resources for transmitting the PSSCH,

wherein the time domain positions of the one or more DMRSs in the resources for transmitting the PSSCH comprise:

the DMRSs are located at a first time domain symbol and a last time domain symbol of the resources for transmitting the PSSCH; or

the DMRS is located at a time domain symbol at a middle position of the resources for transmitting the PSSCH; or

the DMRS is located at the first time domain symbol of the resources for transmitting the PSSCH,

wherein the determining, according to a number of time domain symbols occupied by resources for transmitting a PSSCH in one time slot, time domain positions of one or more DMRSs in the resources for transmitting the PSSCH comprises one of:

in a case where the number of the time domain symbols occupied by the resources for transmitting the PSSCH in one time slot is 3 and a Physical Sidelink Control Channel (PSCCH) corresponding to the PSSCH occupies 3 time domain symbols of the resources of the PSSCH, the number of the time domain symbols occupied by the DMRS is 2, and the DMRSs are located at the first time domain symbol and the last time domain symbol of the resources for transmitting the PSSCH; or

in a case where the number of the time domain symbols occupied by the resources for transmitting the PSSCH in one time slot is 3 and the PSCCH corresponding to the PSSCH occupies 3 time domain symbols of the resources of the PSSCH, the number of the time domain symbol occupied by the DMRS is 1, and the DMRS is located at a second time domain symbol of the resources for transmitting the PSSCH; or

in a case where the number of the time domain symbols occupied by the resources for transmitting the PSSCH in one time slot is 3 and the PSCCH corresponding to the PSSCH occupies 2 time domain symbols of the resources of the PSSCH, the number of the time domain symbols occupied by the DMRS is 2, and the DMRSs are located at the first time domain symbol and the last time domain symbol of the resources for transmitting the PSSCH; or

in a case where the number of the time domain symbols occupied by the resources for transmitting the PSSCH in one time slot is 2 and the PSCCH corresponding to the PSSCH occupies 2 time domain symbols of the resources of the PSSCH, the number of the time domain symbols occupied by the DMRS is 2, and the DMRSs are located at the first time domain symbol and the last time domain symbol of the resources for transmitting the PSSCH; or

in a case where the number of the time domain symbols occupied by the resources for transmitting the PSSCH in one time slot is 2 and the PSCCH corresponding to the PSSCH multiplexes 2 time domain symbols of the resources of the PSSCH, the number of the time domain symbols occupied by the DMRS is 1, and the DMRS is located at the first time domain symbol of the resources for transmitting the PSSCH.

2. The method of claim 1 , wherein the number of the time domain symbols occupied by the resources for transmitting the PSSCH is greater than or equal to 2 and is less than or equal to 4.

3. A Demodulation Reference Signal (DMRS) receiving method, comprising:

receiving, by a second device, a Physical Sidelink Share Channel (PSSCH) and one or more DMRSs, and demodulating the PSSCH based on detected DMRSs,

wherein time domain positions of the one or more DMRSs in resources for transmitting the PSSCH comprise:

the DMRSs are located at a first time domain symbol and a last time domain symbol of the resources for transmitting the PSSCH; or

the DMRS is located at a time domain symbol at a middle position of the resources for transmitting the PSSCH; or

the DMRS is located at the first time domain symbol of the resources for transmitting the PSSCH,

wherein the method further comprises one of:

in a case where a number of the time domain symbols occupied by the resources for transmitting the PSSCH in one time slot is 3 and a Physical Sidelink Control Channel (PSCCH) corresponding to the PSSCH occupies 3 time domain symbols of the resources of the PSSCH, the number of the time domain symbols occupied by the DMRS is 2, and the DMRSs are located at the first time domain symbol and the last time domain symbol of the resources for transmitting the PSSCH; or

in a case where the number of the time domain symbols occupied by the resources for transmitting the PSSCH in one time slot is 3 and the PSCCH corresponding to the PSSCH occupies 3 time domain symbols of the resources of the PSSCH, the number of the time domain symbol occupied by the DMRS is 1, and the DMRS is located a second time domain symbol of the resources for transmitting the PSSCH; or

in a case where the number of the time domain symbols occupied by the resources for transmitting the PSSCH in one time slot is 3 and the PSCCH corresponding to the PSSCH occupies 2 time domain symbols of the resources of the PSSCH, the number of the time domain symbols occupied by the DMRS is 2, and the DMRSs are located at the first time domain symbol and the last time domain symbol of the resources for transmitting the PSSCH; or

in a case where the number of the time domain symbols occupied by the resources for transmitting the PSSCH in one time slot is 2 and the PSCCH corresponding to the PSSCH occupies 2 time domain symbols of the resources of the PSSCH, the number of the time domain symbols occupied by the DMRS is 2, and the DMRSs are located at the first time domain symbol and the last time domain symbol of the resources for transmitting the PSSCH; or

in a case where the number of the time domain symbols occupied by the resources for transmitting the PSSCH in one time slot is 2 and the PSCCH corresponding to the PSSCH multiplexes 2 time domain symbols of the resources of the PSSCH, the number of the time domain symbols occupied by the DMRS is 1, and the DMRS is located at the first time domain symbol of the resources for transmitting the PSSCH.

4. The method of claim 3 , wherein a number of the time domain symbols occupied by the resources for transmitting the PSSCH is greater than or equal to 2 and is less than or equal to 4.

5. A first device, comprising:

a memory storing processor-executable instructions; and

a processor configured to execute the stored processor-executable instructions to perform an operation of:

determining, according to a number of time domain symbols occupied by resources for transmitting a Physical Sidelink Share Channel (PSSCH) in one time slot, time domain positions of one or more Demodulation Reference Signals (DMRSs) in the resources for transmitting the PSSCH,

wherein the time domain positions of the one or more DMRSs in the resources for transmitting the PSSCH comprise:

the DMRSs are located at a first time domain symbol and a last time domain symbol of the resources for transmitting the PSSCH; or

the DMRS is located at a time domain symbol at a middle position of the resources for transmitting the PSSCH; or

the DMRS is located at the first time domain symbol of the resources for transmitting the PSSCH,

wherein the determining, according to a number of time domain symbols occupied by resources for transmitting a PSSCH in one time slot, time domain positions of one or more DMRSs in the resources for transmitting the PSSCH comprises one of:

in a case where the number of the time domain symbols occupied by the resources for transmitting the PSSCH in one time slot is 3 and a Physical Sidelink Control Channel (PSCCH) corresponding to the PSSCH occupies 3 time domain symbols of the resources of the PSSCH, the number of the time domain symbols occupied by the DMRS is 2, and the DMRSs are located at the first time domain symbol and the last time domain symbol of the resources for transmitting the PSSCH; or

in a case where the number of the time domain symbols occupied by the resources for transmitting the PSSCH in one time slot is 3 and the PSCCH corresponding to the PSSCH occupies 3 time domain symbols of the resources of the PSSCH, the number of the time domain symbol occupied by the DMRS is 1, and the DMRS is located at a second time domain symbol of the resources for transmitting the PSSCH; or

in a case where the number of the time domain symbols occupied by the resources for transmitting the PSSCH in one time slot is 3 and the PSCCH corresponding to the PSSCH occupies 2 time domain symbols of the resources of the PSSCH, the number of the time domain symbols occupied by the DMRS is 2, and the DMRSs are located at the first time domain symbol and the last time domain symbol of the resources for transmitting the PSSCH; or

in a case where the number of the time domain symbols occupied by the resources for transmitting the PSSCH in one time slot is 2 and the PSCCH corresponding to the PSSCH occupies 2 time domain symbols of the resources of the PSSCH, the number of the time domain symbols occupied by the DMRS is 2, and the DMRSs are located at the first time domain symbol and the last time domain symbol of the resources for transmitting the PSSCH; or

in a case where the number of the time domain symbols occupied by the resources for transmitting the PSSCH in one time slot is 2 and the PSCCH corresponding to the PSSCH multiplexes 2 time domain symbols of the resources of the PSSCH, the number of the time domain symbols occupied by the DMRS is 1, and the DMRS is located at the first time domain symbol of the resources for transmitting the PSSCH.

6. The first device of claim 5 , wherein the number of the time domain symbols occupied by the resources for transmitting the PSSCH is greater than or equal to 2 and is less than or equal to 4.

Assignments (3)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Aug 29, 2026
From: ORIENTAL IP INVESTMENT LIMITED
To: RED RIVER INNOVATIONS LLC
Reel/Frame 075833/0438 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Dec 23, 2025
From: GUANGDONG OPPO MOBILE
To: ORIENTAL IP INVESTMENT LIMITED
Reel/Frame 073299/0094 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Aug 18, 2022
From: ZHAO, ZHENSHAN; LU, QIANXI
To: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD.
Reel/Frame 060847/0822 →
Continuity (2)
Continuation PCTCN2020074398 · Feb 6, 2020
Related Publication 20220376864A1 · Nov 24, 2022
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