Beam Failure Detection via Preliminary Switch Request
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Solution Overview
Problem
Current wireless communication systems face challenges in managing beam failures, particularly in dynamic environments, where traditional beam failure detection methods based on beam failure instance counts are time and power consuming, leading to increased delay and energy consumption.
Innovation Solution
The method involves a user equipment (UE) requesting a beam switch from a network entity before initiating a beam failure recovery procedure, including a report on preferred candidate beams and channel conditions, allowing for faster detection and recovery by using alternative criteria such as energy level measurements or reference signal blocking, rather than relying solely on beam failure instance counts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional beam failure detection methods based on beam failureinstance counts are used, then beam failure can be detected, but the detection process is time and power consuming, leading to increased delay and energy consumption
Solution Approach 1:
The patent applies preliminary action by having the UE transmit a beam switch request before initiating the beam failure recovery procedure. The UE detects beam failure through alternative criteria (energy level measurements or reference signal blocking) and proactively requests a beam switch from the network entity prior to starting the recovery process, thereby reducing the overall time and power consumption while maintaining detection accuracy
2Reliability
If traditional beam failure detection methods based on beam failureinstance counts are used, then beam failure can be detected, but energy consumption increases
Solution Approach 1:
The patent applies preliminary action by having the UE transmit a beam switch request before initiating the beam failure recovery procedure. The UE detects beam failure through alternative criteria (energy level measurements or reference signal blocking) and proactively requests a beam switch from the network entity prior to starting the recovery process, thereby reducing the overall time and power consumption while maintaining detection accuracy
3Productivity
If beam switch request is transmitted before beam failure recovery procedure, then faster beam establishment is achieved, but additional signaling is required
Solution Approach 1:
The patent applies preliminary action by having the UE transmit a beam switch request before initiating the beam failure recovery procedure. The UE detects beam failure through alternative criteria (energy level measurements or reference signal blocking) and proactively requests a beam switch from the network entity prior to starting the recovery process, thereby reducing the overall time and power consumption while maintaining detection accuracy
Data Source
AI summary
Certain aspects of the present disclosure provide techniques for beam failure detection and recovery. An example method of wireless communication by a user equipment generally includes detecting a beam failure associated with a reference signal from a network entity and transmitting, to the network entity before initiating a beam failure recovery procedure, a request for a beam switch in response to the detected beam failure. The method also includes receiving, from the network entity, an indication to communicate via a beam in response to the request and communicating with the network entity via the beam based on the indication.