eDRX Paging Window Merging for Lower Terminal Power Use
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Solution Overview
Problem
The increased power consumption of terminal devices due to monitoring paging messages based on multiple eDRX cycles reduces their standby time.
Innovation Solution
By determining overlapping paging hyperframes and time windows based on different eDRX cycles, the method ensures that terminal devices monitor overlapping paging occasions only once, reducing the total duration and quantity of wake-ups, thereby minimizing power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the terminal device monitors paging messages based on multiple eDRX cycles, then the paging message monitoring coverage is improved, but the power consumption increases
Solution Approach 1:
The patent merges the first paging time window (PTW) determined based on the first eDRX cycle with the second PTW determined based on the second eDRX cycle. When these windows overlap or coincide, the terminal device monitors paging messages in the merged window rather than separately monitoring both, thereby reducing the total monitoring duration and power consumption while maintaining comprehensive paging coverage.
Solution Approach 2:
The patent enables a single PTW to serve multiple functions by determining it based on both the first eDRX cycle and the second eDRX cycle. This unified PTW simultaneously covers paging occasions for both eDRX cycles, allowing the terminal device to monitor all relevant paging messages in one window rather than requiring separate monitoring procedures for each cycle.
2Reliability
If the terminal device monitors paging messages based on multiple eDRX cycles, then the paging message monitoring coverage is improved, but the standby time is reduced
Solution Approach 1:
The patent merges the first PTW and second PTW into a unified monitoring window. By combining these windows and eliminating redundant monitoring periods, the total time the terminal device must remain awake is reduced, thereby extending the standby time while ensuring that paging messages for both eDRX cycles are still monitored.
Solution Approach 2:
The unified PTW determined based on both eDRX cycles serves as a universal monitoring window that covers all necessary paging occasions. This multi-functional window eliminates the need for separate monitoring intervals, reducing the overall awake time and extending standby duration while maintaining comprehensive paging coverage.
3Reliability
If the terminal device determines separate PTWs for each eDRX cycle, then the paging message monitoring completeness is improved, but the monitoring efficiency is reduced
Solution Approach 1:
The patent merges the determination of separate PTWs into a unified PTW determination process. By calculating a single PTW that satisfies both first and second eDRX cycle requirements, the terminal device ensures complete paging message coverage while performing only one monitoring operation instead of multiple separate ones, thereby improving monitoring efficiency.
Solution Approach 2:
The unified PTW determined based on both eDRX cycles functions as a universal monitoring window that simultaneously covers all paging occasions required by different eDRX cycles. This single window achieves the monitoring completeness of multiple separate windows while requiring only one monitoring operation, thus improving efficiency.
Data Source
AI summary
A communication method and apparatus are disclosed. The method includes determining a first paging hyperframe (PH) based on a first extended discontinuous reception (eDRX) cycle, and determining a second PH based on a second eDRX cycle, where the first PH includes a first paging time window (PTW), and the second PH includes a second PTW; and monitoring a paging occasion (PO) in the first PTW and the second PTW, where if the first PH and the second PH are a same PH, a start position of the first PTW in the first PH is determined based on the first eDRX cycle and an offset.