Extended DRX Paging Synchronization for UE Power Reduction
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Solution Overview
Problem
Existing discontinuous reception (DRX) technologies in telecommunications lead to excessive power consumption in user equipment (UE) due to frequent listening to paging messages and potential paging losses caused by asynchronous DRX between the UE and the network.
Innovation Solution
Implementing an extended DRX indicator and/or extended DRX in paging messages to instruct base stations to calculate a paging time using a longer DRX value, ensuring synchronization and reducing power consumption while avoiding paging losses.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the base station uses a small default DRX value to calculate paging time, then the UE can listen to paging messages frequently and maintain synchronization with the network, but the power consumption of the UE increases due to frequent waking and listening
Solution Approach 1:
The patent introduces dynamic DRX adjustment where the base station can dynamically indicate different DRX values to different UEs through paging messages or system information. This allows the DRX parameter to be adaptive rather than static, enabling the network to optimize the balance between synchronization reliability and power consumption based on individual UE conditions and network traffic patterns.
Solution Approach 2:
The patent changes the DRX parameter value dynamically by introducing extended DRX indicators that allow the base station to indicate longer DRX values to UEs. This parameter change enables UEs to extend their sleep periods while the network maintains the ability to reach them, thus reducing power consumption without completely sacrificing paging reliability.
2Use of energy by moving object
If the UE reports a longer DRX cycle to reduce power consumption, then the UE can stay in sleep state longer, but the DRX of the UE and the network may become asynchronous causing paging message loss
Solution Approach 1:
The patent implements a feedback mechanism where the UE reports its DRX capabilities and preferences to the network, and the network responds with appropriate DRX configurations. This closed-loop feedback ensures that both the UE and network have consistent understanding of the DRX timing, preventing asynchrony and paging loss while allowing the UE to use longer DRX cycles for power savings.
Solution Approach 2:
The patent introduces the base station as an intermediary that mediates between the UE's power saving requirements and the network's paging needs. The base station receives DRX indications from the UE, processes them along with network paging requirements, and determines the final DRX configuration that both parties can follow, ensuring synchronization is maintained.
3Device complexity
If the base station broadcasts a small default DRX value, then the paging time calculation is simple and consistent, but UEs cannot achieve desirable power reduction because they must wake up frequently
Solution Approach 1:
The patent applies local quality by allowing different DRX values to be assigned to different UEs or different paging scenarios. Instead of a single uniform default DRX value for all UEs, the system can provide customized DRX configurations tailored to individual UE power needs and traffic patterns, with the base station indicating appropriate DRX values through paging messages or dedicated signaling.
Data Source
AI summary
The present disclosure relates to discontinuous reception communication synchronization methods and apparatus. One example method includes receiving a system message that is broadcast by a base station and that indicates that the base station supports a capability of extended discontinuous reception (DRX), sending an extended DRX value to a network element of a core network, receiving, from the network element of the core network, extended DRX support information indicating that the network element of the core network supports the extended DRX, calculating a paging time using the extended DRX value, and receiving a paging message delivered from the base station according to the paging time.