BWP Switching via Timing Indication for 5G Power Optimization
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Solution Overview
Problem
Existing BWP switching methods in 5G NR communication systems face challenges in managing power consumption and access delay, especially for bursty or non-stationary traffic patterns.
Innovation Solution
A BWP switching method and apparatus that involves sending timing indication information from a base station to user equipment (UE), allowing the UE to determine the appropriate operation for BWP switching based on a specified duration. This method enables adaptive BWP switching according to traffic patterns, reducing power consumption and access delay.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If the UE uses a large bandwidth BWP continuously, then the available bandwidth for data transmission is sufficient, but the power consumption increases
Solution Approach 1:
The patent implements dynamic BWP switching where the UE transitions from a large bandwidth BWP to a small bandwidth BWP based on actual traffic conditions. The base station sends timing indication information that triggers the UE to switch to a smaller BWP when no predefined transmission occurs within a specified duration, thereby adapting the bandwidth to actual needs and reducing power consumption while maintaining sufficient bandwidth when required
2Use of energy by moving object
If the UE switches to a small bandwidth BWP quickly, then the power consumption is reduced, but the access delay increases
Solution Approach 1:
The patent applies preliminary action by pre-configuring timing indication information and specified durations before actual BWP switching is needed. The base station sends timing indication information in advance, and the UE pre-calculates the switching timing based on the specified duration. This allows the UE to switch to a small bandwidth BWP at the optimal moment without causing access delay, as the switching timing is predetermined and coordinated with actual transmission needs
3Measurement precision
If the UE monitors for predefined transmissions continuously, then the BWP switching timing is accurate, but the power consumption increases
Solution Approach 1:
The patent implements periodic action by using timing indication information that specifies a duration for the UE to monitor for predefined transmissions. Instead of continuous monitoring, the UE monitors periodically or for a predetermined duration only. When no predefined transmission occurs within the specified duration, the UE switches to a small bandwidth BWP. This periodic monitoring approach maintains accurate switching timing while significantly reducing power consumption compared to continuous monitoring
Data Source
AI summary
A bandwidth part (BWP) switching method is performed by a base station. The method includes: sending timing indication information, wherein the timing indication information indicates configuration of timing information, and the timing information is used for user equipment (UE) to determine a related operation of BWP switching according to a specified duration indicated by the timing information.