Exchange Paging Timing for eDRX Wake-Up Signal Coordination
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Solution Overview
Problem
In wireless communication systems using extended discontinuous reception (eDRX), UEs may fail to receive paging if it is sent later than the wake-up signal (WUS) used to determine the paging reception process, leading to missed notifications.
Innovation Solution
An exchange system adjusts the timing of paging transmission by advancing it before the regular WUS determination process, ensuring timely delivery of paging messages to the base station.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If paging is sent after the WUS determination process, then power consumption is reduced by skipping unnecessary paging reception, but paging delivery reliability deteriorates
Solution Approach 1:
The exchange performs preliminary action by determining the WUS transmission timing in advance and adjusting the paging transmission timing to occur before the WUS determination process at the base station. This ensures that paging messages are delivered to the base station before the UE makes its decision about whether to activate paging reception, thereby preventing missed notifications while allowing the UE to skip paging reception when no paging is present, thus maintaining power efficiency.
2Loss of energy
If the UE skips paging reception process based on WUS, then power consumption is reduced, but the likelihood of receiving paging deteriorates
Solution Approach 1:
The exchange determines the WUS transmission timing in advance and adjusts paging transmission timing accordingly, performing the paging delivery before the UE's WUS-based decision point. This preliminary timing adjustment ensures that paging messages are already at the base station before the UE decides whether to receive paging, eliminating the risk of missed paging while preserving the power-saving benefit of WUS-based skipping.
Data Source
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AI summary
An exchange includes: a reception unit that receives, from a gateway, a message indicating presence of an incoming call to a terminal; a control unit that adjusts the time for transmitting paging corresponding to the message to a base station; and a transmission unit that transmits the paging to the base station at the adjusted time.