UE capability for DMRS bundling

Patent metadata

Field	Value
Publication number	US-11757592-B2
Application number	US-202117468172-A
Country	US
Kind code	B2
Filing date	Sep 7, 2021
Priority date	Sep 7, 2021
Publication date	Sep 12, 2023
Grant date	Sep 12, 2023

Abstract

Aspects relate to techniques for signaling the capability of a wireless communication device (e.g., a UE) to support demodulation reference signal (DMRS) bundling for channel estimation across two or more slots in the sidelink or uplink. In some examples, a transmitting UE may transmit a DMRS bundling indication to a receiving device (e.g., a receiving UE for sidelink DMRS bundling or a base station for uplink DMRS bundling). The DMRS bundling indication may indicate a capability of the transmitting UE to support DMRS bundling. The transmitting UE may then transmit a respective set of DMRSs within each of two or more slots during a DMRS bundling window to the receiving device based on the transmitting wireless communication device and the receiving device supporting DMRS bundling.

First claim

What is claimed is:

1. A transmitting wireless communication device in a wireless communication network, comprising:
a transceiver;
a memory; and
a processor coupled to the transceiver and the memory, wherein the processor and the memory are configured to:
transmit a demodulation reference signal (DMRS) bundling indication to a receiving device, the DMRS bundling indication indicating a first capability of the transmitting wireless communication device to support DMRS bundling for channel estimation across two or more slots;
transmit a phase continuity indication indicating a second capability of the transmitting wireless communication device to maintain phase continuity between the two or more slots, wherein the phase continuity indication indicates that the transmitting wireless communication device is capable of maintaining the phase continuity based on the two or more slots being non-consecutive slots; and
transmit a respective set of DMRSs within each of the two or more slots to the receiving device during a DMRS bundling window based on the transmitting wireless communication device and the receiving device each supporting DMRS bundling and the phase continuity indication.

2. The transmitting wireless communication device of claim 1 , wherein the phase continuity indication further indicates a maximum time gap between the non-consecutive slots over which the transmitting wireless communication device can maintain the phase continuity.

3. A transmitting wireless communication device in a wireless communication network, comprising:
a transceiver;
a memory; and
a processor coupled to the transceiver and the memory, wherein the processor and the memory are configured to:
transmit a demodulation reference signal (DMRS) bundling indication to a receiving device, the DMRS bundling indication indicating a first capability of the transmitting wireless communication device to support DMRS bundling for channel estimation across two or more slots;
transmit a phase continuity indication indicating a second capability of the transmitting wireless communication device to maintain phase continuity between the two or more slots, wherein the phase continuity indication indicates a maximum degree of change in random phase terms between the two or more slots allowed to maintain the phase continuity; and
transmit a respective set of DMRSs within each of the two or more slots to the receiving device during a DMRS bundling window based on the transmitting wireless communication device and the receiving device each supporting DMRS bundling and the phase continuity indication.

4. A transmitting wireless communication device in a wireless communication network, comprising:
a transceiver;
a memory; and
a processor coupled to the transceiver and the memory, wherein the processor and the memory are configured to:
transmit a demodulation reference signal (DMRS) bundling indication to a receiving device, the DMRS bundling indication indicating a first capability of the transmitting wireless communication device to support DMRS bundling for channel estimation across two or more slots;
transmit a phase continuity indication indicating a second capability of the transmitting wireless communication device to maintain phase continuity between the two or more slots, wherein the phase continuity indication indicates that the transmitting wireless communication device is capable of maintaining the phase continuity in response to the transmitting wireless communication device switching a communication direction between the two or more slots; and
transmit a respective set of DMRSs within each of the two or more slots to the receiving device during a DMRS bundling window based on the transmitting wireless communication device and the receiving device each supporting DMRS bundling and the phase continuity indication.

5. The transmitting wireless communication device of claim 1 , wherein the phase continuity indication further indicates that the transmitting wireless communication device is capable of maintaining the phase continuity in response to the transmitting wireless communication device switching at least one of a beam or a transmit power between the two or more slots.

6. A transmitting wireless communication device in a wireless communication network, comprising:
a transceiver;
a memory; and
a processor coupled to the transceiver and the memory, wherein the processor and the memory are configured to:
transmit a demodulation reference signal (DMRS) bundling indication to a receiving device, the DMRS bundling indication indicating a first capability of the transmitting wireless communication device to support DMRS bundling for channel estimation across two or more slots;
transmit a phase continuity indication indicating a second capability of the transmitting wireless communication device to maintain phase continuity between the two or more slots, wherein the phase continuity indication further indicates that the transmitting wireless communication device is capable of maintaining the phase continuity in response to the transmitting wireless communication device changing at least one of carrier frequency or a bandwidth between the two or more slots; and
transmit a respective set of DMRSs within each of the two or more slots to the receiving device during a DMRS bundling window based on the transmitting wireless communication device and the receiving device each supporting DMRS bundling and the phase continuity indication.

7. The transmitting wireless communication device of claim 1 , wherein the phase continuity indication further indicates that the transmitting wireless communication device will maintain the phase continuity between the two or more slots.

8. The transmitting wireless communication device of claim 1 , wherein the processor and the memory are further configured to:
receive an additional phase continuity indication indicating a third capability of the receiving device to maintain additional phase continuity between the two or more slots, and
transmit the respective set of DMRSs within each of the two or more slots during the DMRS bundling window to the receiving device based on the phase continuity indication and the additional phase continuity indication.

9. The transmitting wireless communication device of claim 8 , wherein the receiving device comprises a receiving wireless communication device, and wherein the processor and the memory are further configured to:
receive an additional DMRS bundling indication indicating a fourth capability of the receiving wireless communication device to support DMRS bundling.

10. The transmitting wireless communication device of claim 9 , wherein the processor and the memory are further configured to:
receive a phase jump estimation indication from the receiving wireless communication device indicating a fifth capability of the receiving wireless communication device to estimate a phase jump between the two or more slots; and
transmit the respective set of DMRSs within each of the two or more slots during the DMRS bundling window to the receiving wireless communication device via a sidelink therebetween based on the phase jump estimation indication.

11. The transmitting wireless communication device of claim 10 , wherein the phase jump estimation indication indicates that the receiving wireless communication device is capable of utilizing an automatic gain control (AGC) symbol or another symbol of a subsequent slot of the two or more slots for phase jump estimation.

12. The transmitting wireless communication device of claim 1 , wherein the processor and the memory are further configured to:
transmit the DMRS bundling in

Assignees

• Qualcomm Inc

Inventors

• Ryu Jung Ho
• Akkarakaran Sony
• Luo Tao
• Li Junyi
• Gaal Peter
• Wang Xiaojie
• Nam Wooseok
• Montojo Juan
• Zhang Xiaoxia
• Sun Jing
• Taherzadeh Boroujeni Mahmoud
• Gupta Piyush
• Wang Hua
• Fong Lik Hang Silas
• Bai Tianyang
• Zhou Yan

Classifications

• H04L5/0051 Primary

  of dedicated pilots, i.e. pilots destined for a single user or terminal · CPC title

• H04L5/0091

  Signalling for the administration of the divided path, e.g. signalling of configuration information · CPC title

• H04L5/001

  the frequencies being arranged in component carriers · CPC title

• H04L5/0053

  Allocation of signalling, i.e. of overhead other than pilot signals · CPC title

• H04L5/0044

  Allocation of payload; Allocation of data channels, e.g. PDSCH or PUSCH · CPC title