Multi-SIM Paging Alignment to Reduce Idle-Mode Power
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Multi-SIM wireless communication devices experience significant power consumption when operating in idle mode due to the need to monitor paging signals from multiple networks, which can be exacerbated by hardware limitations and overlapping paging occasions.
Innovation Solution
Coordinating paging occasions in the time domain by determining a timing offset between paging occasions of different networks and requesting network alignment to minimize the need for frequent transitions between inactive and active states, thereby reducing power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the multi-SIM UE monitors paging signals from multiple networks at separate paging occasions, then the paging coverage and network connectivity are improved, but the power consumption increases significantly
Solution Approach 1:
The patent merges multiple paging occasions from different networks into a single coordinated paging occasion. The UE requests the networks to align their paging transmissions to occur simultaneously, allowing the UE to monitor all paging signals in one wake-up event rather than requiring separate wake-ups for each network, thus reducing power consumption while maintaining comprehensive paging coverage
Solution Approach 2:
The patent implements periodic paging monitoring at coordinated paging occasions. The UE enters idle mode and wakes up periodically at the aligned paging occasion to monitor paging signals from multiple networks simultaneously, then returns to sleep mode. This periodic action pattern reduces the frequency of active state transitions compared to monitoring separate paging occasions for each network
2Reliability
If the UE frequently transitions between inactive and active states to monitor paging signals from multiple networks, then the paging signal monitoring capability is improved, but the power consumption increases due to frequent state transitions
Solution Approach 1:
The patent combines multiple paging monitoring tasks into a single coordinated paging occasion. The UE requests network alignment so that paging signals from multiple networks are transmitted at the same time, allowing the UE to perform one state transition to active mode and monitor all paging signals simultaneously, rather than requiring multiple separate state transitions
Solution Approach 2:
The UE autonomously requests the networks to coordinate their paging transmissions by sending a coordination request message. The UE initiates the alignment process itself, indicating its capability to self-manage the paging coordination to minimize its own power consumption from frequent state transitions
3Adaptability or versatility
If the networks transmit paging signals at different times, then the network independence and flexibility are improved, but the UE power consumption increases due to extended active monitoring periods
Solution Approach 1:
The patent introduces dynamic coordination of paging timings. The networks transition from independent, static paging schedules to a coordinated, dynamic schedule aligned with the UE's capabilities and power management requirements. The UE requests alignment, and the networks adjust their paging transmission times dynamically to match, creating a flexible system that adapts to reduce UE power consumption while maintaining network operational flexibility
Solution Approach 2:
The UE provides feedback to the networks by sending a coordination request message indicating its preference for aligned paging occasions. This feedback mechanism allows the networks to adjust their paging transmission timing based on UE requirements, creating a closed-loop system where network behavior is optimized based on UE power consumption needs
Data Source
AI summary
A method of operating a wireless communication device (101) comprising a wireless interface (1015) having a capability to use a first identity (451) and a second identity (452), the method comprising: determining a timing offset between a first timing of first paging occasions (396, 396-1) of a first network (100, 100-1) associated with the first identity (451) and a second timing of second paging occasions (396, 396-2) of a second network (100, 100-2) associated with the second identity (452); and based on the timing offset (780, 780-1), transmitting at least one request control message (3002) to at least one of the first network (100, 100-1) or the second network (100, 100-2), to request a timing coordination of paging from the first network (100, 100-2) and paging from the second network (100, 100-2).