Mobile Station PDCCH Skipping for Lower DRX Power Use
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Solution Overview
Problem
Mobile stations consume excessive power during PDCCH monitoring in DRX mode due to unnecessary continuous monitoring, especially in sparse traffic models, leading to inefficient power usage.
Innovation Solution
Implement PDCCH monitoring skipping during DRX on periods, triggered by predefined signaling, detection of predefined information, or default methods, with defined skipping periods and application delays to reduce unnecessary PDCCH monitoring.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If mobile stations continuously monitor PDCCH during DRX on periods to ensure reliable communication, then communication reliability is improved, but power consumption increases
Solution Approach 1:
The patent implements periodic PDCCH monitoring during DRX on periods instead of continuous monitoring. The mobile station monitors PDCCH at specific intervals defined by monitoring occasions and skipping periods, allowing it to wake up periodically to check for scheduling information while remaining in a low-power state between monitoring instances. This periodic action maintains communication reliability by ensuring the station can detect scheduling commands when they are transmitted, while significantly reducing power consumption compared to continuous monitoring.
2Productivity
If mobile stations monitor larger control channel bandwidths to meet high-performance transmission requirements, then transmission performance is improved, but processing complexity increases
Solution Approach 1:
The patent extracts and processes only the essential PDCCH monitoring functionality during DRX on periods, separating it from full continuous monitoring operations. By implementing monitoring skipping where the mobile station monitors PDCCH only during specific monitoring occasions and skips monitoring during other periods within the DRX cycle, the system reduces processing complexity while maintaining the core capability to receive scheduling information. This extraction approach allows the station to handle larger control channel bandwidths when needed without requiring continuous high-performance processing.
3Reliability
If mobile stations perform complex encoding and decoding processing to meet performance requirements, then transmission reliability is improved, but power consumption increases
Solution Approach 1:
The patent applies periodic action to encoding and decoding operations by triggering complex processing only during PDCCH monitoring occasions when scheduling information is actually transmitted. During skipping periods, the mobile station remains in a low-power state with minimal processing activity. This periodic execution of complex encoding/decoding operations ensures transmission reliability is maintained when data transmission occurs, while avoiding continuous power-intensive processing during periods when no transmission is active, thereby reducing overall power consumption.
Data Source
AI summary
This disclosure relates to wireless communication methods that reduce power usage in a mobile station caused by monitoring Physical Downlink Control Channel (PDCCH). The mobile station can implement a PDCCH monitoring skipping behavior including skipping the monitoring of the PDCCH for a skipping period.