Beam Switching Time Periods for Multi-Band Wireless Stability
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Solution Overview
Problem
Wireless communication systems face challenges in managing beams across multiple frequency bands, particularly when the receive time difference between signals in different frequency bands exceeds a threshold, leading to communication failures or disruptions during beam switching.
Innovation Solution
The method involves determining a limited number of time periods for beam switching, based on a reference band, to minimize disruptions across multiple frequency bands, and selecting a reference band with optimal signal metrics or priority for beam switching, allowing for seamless transitions without affecting communication quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If beam switching is performed without time period restrictions, then beam responsiveness to UE mobility is improved, but communication stability across multiple frequency bands deteriorates due to receive time differences
Solution Approach 1:
The patent implements periodic action by defining specific time periods (e.g., within or between slots) during which beam switching is permitted. The UE is configured with beam switching criteria that restrict beam switching to occur only during these designated time periods, thereby preventing arbitrary beam switching that would cause communication failures across frequency bands with different receive time differences
Solution Approach 2:
The patent applies preliminary action by pre-configuring the UE with beam switching criteria and time period restrictions before beam switching occurs. The network configures the UE with parameters indicating when beam switching is allowed, so that the UE can proactively plan and execute beam switching only during appropriate time periods, avoiding communication disruptions
2Device complexity
If a single common beam is used for multiple frequency bands, then device complexity is reduced, but communication reliability deteriorates when receive time differences exceed thresholds
Solution Approach 1:
The patent implements dynamics by making the beam switching behavior adaptive based on configured criteria. Rather than using a static beam configuration, the system dynamically determines when to switch beams based on time period restrictions and beam switching criteria, allowing the common beam approach to remain reliable under varying conditions while maintaining low device complexity
3Reliability
If beam switching is restricted to limited time periods, then communication stability across frequency bands is improved, but beam responsiveness to mobility changes deteriorates
Solution Approach 1:
The patent applies parameter changes by configuring specific time period parameters (e.g., slot boundaries, symbol positions) that define when beam switching is allowed. By carefully selecting and configuring these time period parameters, the system achieves a balance between maintaining communication stability and enabling sufficient beam switching efficiency for mobility scenarios
Data Source
AI summary
Aspects described herein relate to concurrently communicating with a base station over multiple frequency bands using a same first beam, and switching, according to beam switching criteria, from the first beam to a second beam during a time period, wherein the time period is based on a timing reference associated with a reference band.