User equipment-coordination set full-duplex communication

Patent metadata

Field	Value
Publication number	US-12418908-B2
Application number	US-202118006341-A
Country	US
Kind code	B2
Filing date	Jul 1, 2021
Priority date	Jul 29, 2020
Publication date	Sep 16, 2025
Grant date	Sep 16, 2025

Abstract

Methods, devices, systems, and means for coordinating full-duplex communication are described in which a user equipment, UE, configured as a coordinating user equipment for a user equipment-coordination set, UECS, selects a first subset of UEs in the UECS to jointly receive downlink signals and selects a second subset of UEs in the UECS to jointly transmit uplink signals. The coordinating UE receives uplink data to transmit to the network entity and receives, from the first subset of UEs, demodulated and sampled downlink data that is received concurrently with joint-transmission of the uplink data. The coordinating UE combines the samples received from each UE in the first subset of UEs and jointly processes the combined samples to provide decoded data using the received uplink data to cancel crosstalk of uplink signals for the transmitted uplink data to downlink signals to the received downlink data.

First claim

The invention claimed is:

1. A method performed by a user equipment (UE) configured as a coordinating user equipment for a user equipment-coordination set (UECS) of UEs connected by a local wireless network in a wireless communications network, the method comprising the coordinating user equipment:
selecting a first subset of UEs in the UECS to jointly receive downlink signals;
selecting a second subset of UEs in the UECS to jointly transmit uplink signals, the UEs included in the second subset of UEs not overlapping with the UEs included in the first subset of UEs;
transmitting an indication that the UECS is capable of full-duplex communication to a network entity;
receiving, from the network entity, a resource grant for a target UE for the UECS;
receiving uplink data to transmit to the network entity;
receiving, from the first subset of UEs, demodulated and sampled downlink data, the demodulated and sampled downlink data jointly received by the first subset of UEs concurrently with joint transmission of modulated and coded uplink data by the second subset of UEs;
combining the samples received from each UE in the first subset of UEs; and
jointly processing the combined samples to provide decoded data using the received modulated and coded uplink data to cancel crosstalk of uplink signals for the transmitted uplink data from downlink signals for the received downlink data.

2. The method of claim 1 , wherein the transmitting of the indication that the UECS is capable of full-duplex communication comprises:
transmitting a UECS Radio Network Temporary Identifier (UECS-RNTI) and/or an indication of an associated full-duplex bandwidth to the network entity.

3. The method of claim 1 , wherein the transmitting of the indication that the UECS is capable of full-duplex communication comprises:
transmitting the indication that the UECS is capable of full-duplex communication in a capability information element.

4. The method of claim 1 , wherein the selecting of the first subset of UEs and the selecting of the second subset of UEs comprises:
selecting the UEs for the first subset of UEs and selecting the second subset of UEs based on location information associated with each respective UE in the UECS.

5. The method of claim 1 , wherein the coordinating UE coordinates joint-reception of the downlink signals by the first subset of UEs, wherein the coordinating UE coordinates joint-transmission of the uplink signals by the second subset of UEs, and wherein the receiving of the uplink data to transmit to the network entity comprises:
receiving the uplink data from the target UE over a local wireless connection.

6. The method of claim 1 , wherein the coordinating UE coordinates joint-reception of the downlink signals by the first subset of UEs, wherein another coordinating UE coordinates joint-transmission of the uplink signals by the second subset of UEs, and wherein the receiving of the uplink data to transmit to the network entity comprises:
receiving the uplink data from the other coordinating UE.

7. The method of claim 1 , further comprising the coordinating user equipment:
monitoring an indication of performance of the full-duplex communication;
based on determining that the indication of the performance is below a threshold value of performance;
determining an updated full-duplex bandwidth, and
transmitting the updated full-duplex bandwidth to the network entity; or
transmitting an indication that the UECS can no longer support full-duplex communication.

8. The method of claim 7 , wherein the indication of the performance of the full-duplex communication comprises a ratio of negative acknowledgements (NACKs) to acknowledgments (ACKs) for downlink communications.

9. The method of claim 7 , wherein the monitoring of the indication of performance of the full-duplex communication comprises:
measuring a link quality parameter for downlink communications.

10. The method of claim 9 , wherein the link quality parameter includes:
a signal to noise ratio; or
signal to noise and interference ratio.

11. The method of claim 1 , wherein the first subset of UEs includes the coordinating UE, the method further comprising the coordinating UE:
receiving downlink signals for the downlink data;
demodulating and sampling the downlink signals to produce a set of samples of the downlink signals; and
wherein combining the samples received from each UE in the first subset of UEs includes combining the samples with the produced set of samples.

12. The method of claim 1 , wherein the network entity is a base station.

13. The method of claim 1 , wherein the network entity is an Active Coordination Set (ACS) that includes multiple base stations configured for Coordinated Multipoint Communication, wherein the first subset of UEs in the UECS jointly receives downlink signals from a first subset of base stations in the ACS, and wherein the second subset of UEs in the UECS jointly transmits uplink signals to a second subset of base stations in the ACS.

14. The method of claim 1 , wherein the resource grant includes an indication of downlink resources and uplink resources in the same frequency bandwidth and at overlapping times.

15. A user equipment (UE) comprising:
a radio frequency transceiver;
a processor; and
memory comprising instructions for a communication manager application that is executable to configure the user equipment to:
select a first subset of UEs in a user equipment-coordination set (UECS) to jointly receive downlink signals;
select a second subset of UEs in the UECS to jointly transmit uplink signals, the UEs included in the second subset of UEs not overlapping with the UEs included in the first subset of UEs;
transmit an indication that the UECS is capable of full-duplex communication to a network entity;
receive, from the network entity, a resource grant for a target UE in the UECS;
receive uplink data to transmit to the network entity;
receive, from the first subset of UEs, demodulated and sampled downlink data, the demodulated and sampled downlink data jointly received by the first subset of UEs concurrently with joint transmission of modulated and coded uplink data by the second subset of UEs;
combine the samples received from each UE in the first subset of UEs; and
jointly process the combined samples to provide decoded data using the received modulated and coded uplink data to cancel crosstalk of uplink signals for the transmitted uplink data from downlink signals for the received downlink data.

16. A method performed by a base station in a wireless communications network, the method comprising the base station:
receiving an indication from a user equipment-coordination set (UECS) that the UECS is capable of full-duplex communication, the UECS comprising a first subset of UEs for jointly receiving downlink signals and a second subset of UEs for jointly transmitting uplink signals, the UEs included in the second subset of UEs not overlapping with the UEs included in the first subset of UEs;
based on the indication that the UECS is capable of full-duplex bandwidth, allocating downlink resources and uplink resources for full-duplex communication with a target user equipment (UE) in the UECS;
transmitting a first resource grant to the UECS, the first resource grant including an indication of the downlink resources and the uplink resources;
receiving, from the second subset of UEs in the UECS, uplink signals for uplink data using the uplink resources; and
using downlink data that is concurrently transmitted to the first subset of UEs in the UECS with the re

Assignees

• Google Llc

Inventors

• Wang Jibing
• Stauffer Erik Richard

Classifications

• H04L5/14 Primary

  Two-way operation using the same type of signal, i.e. duplex · CPC title

• H04W72/541

  using the level of interference · CPC title

• H04L5/0055

  Physical resource allocation for ACK/NACK (for physical mapping arrangements in ARQ protocols H04L1/1861) · CPC title

• H04L5/0035

  Resource allocation in a cooperative multipoint environment · CPC title

• H04W72/121 Primary

  for groups of terminals or users · CPC title