Beam Switch Capability Indication and Gap Time Management
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Solution Overview
Problem
Current wireless communication systems face challenges in managing beam switch times effectively, particularly in higher frequency bands, which can lead to performance impacts due to the time-varying effective channel during beam switching, especially when the beam switch time exceeds the cyclic prefix length.
Innovation Solution
The method involves transmitting beam switch capability information from a mobile station to a network node, indicating a minimum beam switch time for different beam switch types, allowing the network node to configure a scheduling gap to mitigate performance impacts and ensuring the beam switch occurs within a stable beamformed channel.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If beam switch time is reduced to improve switching speed, then productivity is improved, but the beam switch may occur during a time-varying effective channel causing performance degradation
Solution Approach 1:
The mobile station performs beam switching in advance based on pre-configured capability information and network node commands, ensuring the beam switch completes before the next communication signal is transmitted. This preliminary completion of the beam switch action eliminates the risk of time-varying channel effects during active communication.
Solution Approach 2:
The mobile station autonomously manages beam switching by utilizing its own capability information (minimum beam switch time) to determine when to execute beam switches, without requiring continuous network coordination during the actual switching operation. This self-service approach ensures reliable switching while maintaining system efficiency.
2Reliability
If beam switch time is increased to ensure stable channel during switching, then communication performance is improved, but beam switching efficiency deteriorates
Solution Approach 1:
The system dynamically adjusts the beam switch timing parameter based on the mobile station's capability information (minimum beam switch time) and network conditions. By changing the timing parameter to align with signal boundaries rather than using fixed intervals, the system achieves both stability and efficiency.
3Adaptability or versatility
If the beam switch occurs during a time-varying effective channel, then beam switching flexibility is improved, but communication reliability deteriorates due to performance impacts
Solution Approach 1:
The network node acts as an intermediary between the mobile station's beam switching capability and the communication channel requirements. It receives capability information from the mobile station, determines appropriate beam switch timing, and issues commands that ensure switching occurs at optimal moments, mediating between flexibility and reliability needs.
Data Source
AI summary
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a mobile station may transmit beam switch capability information that indicates a minimum beam switch time for one or more beam switch types. The mobile station may receive a command to perform a beam switch associated with a beam switch type. The mobile station may perform the beam switch in a time period between a first signal and a second signal, wherein the time period has a duration that satisfies the minimum beam switch time for the beam switch type associated with the beam switch. Numerous other aspects are described.