Multi-USIM Paging Coordination for Overlapping Network Occasions
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Solution Overview
Problem
Multi-USIM devices face challenges in simultaneously monitoring paging channels across different networks due to overlapping paging occasions and systematic collisions, leading to missed pages and inefficient resource usage.
Innovation Solution
The apparatus in a communication device determines and communicates paging overlap occasions to networks, scheduling paging messages at times other than the determined overlap occasions, and controls reception to avoid listening during these times, allowing for optimized resource usage and reduced collisions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the communication device monitors paging channels for multiple identities simultaneously, then the device can receive paging messages from all networks, but the device experiences systematic collisions and missed pages due to overlapping paging occasions
Solution Approach 1:
The device segments the paging monitoring task by identifying and separating overlapping paging occasions for different identities. The device determines specific time resources where paging occasions overlap and selectively monitors only non-overlapping occasions for each identity, preventing collision and ensuring reliable reception without missing pages.
2Reliability
If the device listens for paging messages during all paging occasions, then no paging messages are missed, but the device consumes excessive energy and processing resources
Solution Approach 1:
The device performs preliminary determination of overlapping paging occasions before actual paging reception. By pre-identifying which paging occasions will overlap and causing conflicts, the device can avoid monitoring those specific time resources, thereby conserving energy and processing power while maintaining reliable paging message reception for all identities.
3Reliability
If the device monitors paging channels for all identities, then complete paging coverage is achieved, but the device complexity and computational overhead increase
Solution Approach 1:
The device segments the complex task of monitoring multiple paging channels by systematically identifying overlapping time resources. The complexity is reduced through a structured approach: determining paging occasions for each identity, identifying overlaps, and selectively monitoring only non-overlapping occasions. This segmentation maintains complete paging coverage while significantly reducing the computational burden and monitoring complexity.
Data Source
AI summary
An apparatus in a communications device supporting a plurality of different identities, the apparatus comprising at least one processor and at least one memory including computer program code, the at least one memory and computer program code configured to, with the at least one processor, cause the apparatus at least to: determine at least one paging overlap occasion for networks associated with the different identities; communicate the at least one paging overlap occasion determination to one of the networks associated with one of the different identities within a registration request to the one of the networks, wherein the one of the networks is caused to schedule at least one paging message to the apparatus based on the at least one paging overlap occasion determination such that the at least one paging message is scheduled at a time other than the at least one paging overlap occasion determination; and control a reception of the at least one paging message for the one of the networks such that the apparatus is caused not to listen for a paging message for the one of the networks during the determined at least one paging overlap occasion and control a reception of at least one paging message for a further one of the networks associated with the different identities during the determined at least one paging overlap occasion.