Measurement report techniques for wireless communications systems

Patent metadata

Field	Value
Publication number	US-12267706-B2
Application number	US-202117156208-A
Country	US
Kind code	B2
Filing date	Jan 22, 2021
Priority date	Jan 22, 2020
Publication date	Apr 1, 2025
Grant date	Apr 1, 2025

Abstract

Methods, systems, and devices for wireless communications at a first wireless node in a wireless communications system are described. The techniques may enable a first wireless node (e.g., an integrated access and backhaul (IAB) node in an IAB system) to establish a communications link with a second wireless node. The first wireless node may receive, via a reception beam of the first wireless node, an interfering signal from an aggressor wireless node. The first wireless node may perform an interference measurement of the interfering signal at the first reception beam. The first wireless node may transmit a report indicating the interference measurement to the second wireless node. The second wireless node may schedule communications based on the interference measurement. In some examples, the report may indicate one or more parameters of the interfering signal. In some examples, the report may correspond to one or more beams.

First claim

What is claimed is:

1. A method for wireless communications at a first wireless node in a wireless communications system, comprising:
establishing a communications link with a second wireless node in the wireless communications system, wherein the second wireless node is a parent node or a child node of the first wireless node;
receiving, via a reception beam of the first wireless node, an interfering signal from an aggressor wireless node in the wireless communications system;
performing an interference measurement of the interfering signal at the reception beam to obtain a beam index of a transmission beam associated with the interfering signal, a beam index of the reception beam, or both;
receiving, from the second wireless node or the aggressor wireless node, a downlink medium access control (MAC) control element (CE) comprising a request for an interference measurement report; and
transmitting, in response to the request received in the downlink MAC CE, an uplink MAC CE comprising the interference measurement report indicating the interference measurement for scheduling subsequent communications for the first wireless node and indicating the beam index of the transmission beam associated with the interfering signal, the beam index of the reception beam, or both.

2. The method of claim 1 , wherein performing the interference measurement comprises:
determining one or more parameters of the interfering signal at the reception beam, the one or more parameters comprising a transmission power, a reference signal received power (RSRP), a received signal strength indicator (RSSI), a cell identifier, the beam index of the reception beam, or any combination thereof, wherein the interference measurement report indicates the one or more parameters.

3. The method of claim 1 , further comprising:
selecting a set of beam pairs of the first wireless node and the aggressor wireless node, the set of beam pairs comprising a set of reception beams of the first wireless node and a set of transmission beams of the aggressor wireless node, wherein the set of reception beams comprises the reception beam and the set of transmission beams comprises the transmission beam corresponding to the interfering signal; and
generating the interference measurement report indicating the interference measurement based on the selected set of beam pairs.

4. The method of claim 1 , further comprising:
receiving a second signal corresponding to a serving transmission beam of the second wireless node, wherein the interfering signal corresponds to a beam different than the serving transmission beam.

5. The method of claim 1 , further comprising:
receiving signaling indicating a configuration for the first wireless node, the signaling comprising radio resource control (RRC) signaling or F1 application protocol (AP) signaling; and
transmitting the interference measurement report based at least in part on the configuration.

6. The method of claim 1 , further comprising:
determining that a result of the interference measurement satisfies a threshold; and
transmitting the interference measurement report based at least in part on the result satisfying the threshold, wherein the interference measurement report indicates the result of the interference measurement.

7. The method of claim 1 , further comprising:
transmitting an indication to the second wireless node that the first wireless node has the interference measurement report indicating the interference measurement available for transmission.

8. The method of claim 1 , further comprising:
receiving, from the second wireless node, an indication to provide a second report; and
transmitting a response to the second wireless node indicating that the first wireless node is unable to transmit the second report.

9. The method of claim 3 , wherein generating the interference measurement report comprises:
generating a matrix of interference measurements corresponding to the set of beam pairs, wherein the interference measurement report indicates the matrix of the interference measurements.

10. The method of claim 3 , further comprising:
receiving signaling indicating a configuration for the first wireless node, the signaling comprising radio resource control (RRC) signaling or F1 application protocol (AP) signaling; and
selecting the set of beam pairs based at least in part on the configuration.

11. The method of claim 3 , wherein the set of beam pairs comprises all of a set of possible beam pairs associated with the first wireless node.

12. The method of claim 3 , wherein selecting the set of beam pairs comprises:
determining that one or more results of the interference measurement of the selected set of beam pairs satisfy a threshold, wherein results of each of the selected set of beam pairs satisfy the threshold.

13. The method of claim 3 , wherein the set of beam pairs comprises a subset of reception beams of the set of reception beams of the first wireless node, wherein the subset of reception beams is associated with one or more backhaul links of the first wireless node.

14. The method of claim 3 , wherein the set of beam pairs comprises a subset of reception beams of the set of reception beams of the first wireless node, wherein the subset of reception beams are candidates for scheduling by the aggressor wireless node or the second wireless node.

15. The method of claim 4 , further comprising:
refraining from performing the interference measurement for the second signal corresponding to the serving transmission beam.

16. A method for wireless communications at a first wireless node in a wireless communications system, comprising:
establishing a communications link with a second wireless node in the wireless communications system, wherein the second wireless node is in a parent-child relationship with the first wireless node;
transmitting, to the second wireless node or an aggressor wireless node, a downlink medium access control (MAC) control element (CE) comprising a request for an interference measurement report;
receiving, after transmitting the request in the downlink MAC CE, an uplink MAC CE comprising the interference measurement report indicating an interference measurement for scheduling subsequent communications for the second wireless node and indicating a beam index of a transmission beam associated with an interfering signal, a beam index of a reception beam of the second wireless node, or both, wherein the interference measurement corresponds to the interfering signal from the aggressor wireless node at the reception beam of the second wireless node; and
scheduling the subsequent communications with the second wireless node, the aggressor wireless node, or both based at least in part on receiving the interference measurement report that indicates the interference measurement and indicates the beam index of the transmission beam associated with the interfering signal, the beam index of the reception beam of the second wireless node, or both.

17. The method of claim 16 , wherein the interference measurement report indicates one or more parameters of at least the interfering signal at the reception beam, the one or more parameters comprising a transmission power, a reference signal received power (RSRP), a received signal strength indicator (RSSI), a cell identifier, or any combination thereof, wherein the interference measurement report indicates the one or more parameters.

18. The method of claim 16 , wherein the interference measurement report indicates one or more interference measurements for a set of

Assignees

• Qualcomm Inc

Inventors

• Luo Jianghong
• Abedini Navid
• Luo Tao
• Blessent Luca
• Hampel Karl Georg
• Li Junyi

Classifications

• H04W76/10

  Connection setup · CPC title

• H04W24/10

  Scheduling measurement reports {; Arrangements for measurement reports} · CPC title

• H04W72/541

  using the level of interference · CPC title

• H04W24/08 Primary

  Testing, {supervising or monitoring} using real traffic · CPC title

• H04W84/047

  using dedicated repeater stations · CPC title