UE Beam Pair Indication for Full Duplex Failure Recovery

Solution Overview

Problem

Current wireless communication systems face high latency in recovering from beam failures during full duplex communication due to increased signaling overhead between user equipment (UE) and base stations, which disrupts efficient data exchange.

Innovation Solution

The UE detects beam failures and independently selects a new beam pair, indicating it to the base station, and applies the new pair after a predetermined time or number of slots, reducing the need for extensive signaling and minimizing latency in reinstating full duplex communication.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the UE follows traditional beam failure recovery procedures with extensive signaling between UE and base station, then the beam failure can be properly recovered, but the latency increases and communication efficiency decreases

Engineering Contradiction:

Improvebeam failure recoveryVSAvoidrecovery latency

Core Design Contradiction:

ReliabilityVSLoss of time

Solution Approach 1:

The UE performs beam failure detection and selects a new beam pair before completing the traditional signaling exchange with the base station. By preparing the new beam pair in advance and independently applying it, the UE reduces the time required for beam failure recovery while ensuring reliable connection restoration.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The UE autonomously detects beam failure, selects a new beam pair, and applies it without waiting for base station instructions. This self-service approach allows the UE to independently manage beam recovery, significantly reducing signaling overhead and recovery latency while maintaining connection reliability.

Inventive Principle:

Principle #25Self-service

2Loss of time

If the UE independently selects and applies new beam pairs without extensive base station signaling, then latency is reduced, but signaling overhead between UE and base station increases

Engineering Contradiction:

Improverecovery latencyVSAvoidsignaling overhead

Core Design Contradiction:

Loss of timeVSQuantity of substance

Solution Approach 1:

The UE performs beam failure detection and selects a new beam pair before completing the traditional signaling exchange with the base station. By preparing the new beam pair in advance and independently applying it, the UE reduces the time required for beam failure recovery while ensuring reliable connection restoration.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The UE autonomously detects beam failure, selects a new beam pair, and applies it without waiting for base station instructions. This self-service approach allows the UE to independently manage beam recovery, significantly reducing signaling overhead and recovery latency while maintaining connection reliability.

Inventive Principle:

Principle #25Self-service

Data Source

PatentUS12089244B2Beam pair indication and beam reset after beam failure recovery

Publication Date: 2024.09.10 QUALCOMM INC

AI summary

A user equipment (UE) detects a beam failure for a first beam pair being used for full duplex communication with a base station. The UE indicates the second beam pair for the full duplex communication to the base station to the base station. The UE applies the second beam pair for full duplex communication a period of time after indicating the second beam pair to the base station. The base station receives a beam failure recovery request (BFRQ) from the UE, the BFRQ indicating a beam failure for a first beam pair for full duplex communication at the UE. The base station receives an indication of a second beam pair selected by the UE for the full duplex communication at the UE that the UE will apply a period of time after the indication.