Paging Timing Collision Control for Multi-USIM Devices

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Current 3GPP systems face challenges in supporting multi-USIM devices, leading to issues like paging collisions, missed pages, and inefficient power consumption due to the sharing of radio and baseband components across multiple USIMs, which affects performance and user experience.

Innovation Solution

The proposed solution involves negotiating IMSI or 5G-S-TMSI offset values between user equipment (UE) and network entities like MME or AMF to determine alternative UE identifiers for calculating paging occasions, allowing for efficient paging across multiple USIMs without collisions and optimizing power usage.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Device complexity

If radio and baseband components are shared across multiple USIMs, then device complexity is reduced and cost is lowered, but paging collisions occur and reliability deteriorates

Engineering Contradiction:

Improvedevice complexityVSAvoidpaging reception reliability

Core Design Contradiction:

Device complexityVSReliability

Solution Approach 1:

The patent segments the paging reception process by introducing offset values that divide the paging space into distinct regions for different USIMs. This allows multiple USIMs to share hardware resources while maintaining separate paging occasions, thus resolving the contradiction between reduced device complexity and maintained paging reliability.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent introduces offset values as intermediaries between the shared radio components and multiple USIMs. These offset values act as mediators that allocate different paging occasions to different USIMs, enabling resource sharing without conflicts and maintaining reliable paging reception for each USIM.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Adaptability or versatility

If paging occasions are calculated using standard 3GPP methods, then compatibility is maintained, but paging collisions occur between multiple USIMs

Engineering Contradiction:

Improve3GPP compatibilityVSAvoidpaging collision avoidance

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The patent modifies the paging calculation parameters by introducing offset values (e.g., offset_IMSI, offset_5G-S-TMSI) that are added to the identity values used in paging occasion calculations. This parameter change maintains 3GPP compatibility while effectively separating paging occasions for different USIMs, preventing collisions.

Inventive Principle:

Principle #35Parameter changes

3Reliability

If devices monitor paging for multiple USIMs simultaneously, then paging reception coverage is improved, but power consumption increases

Engineering Contradiction:

Improvepaging reception coverageVSAvoidpower consumption

Core Design Contradiction:

ReliabilityVSUse of energy by moving object

Solution Approach 1:

The patent segments the paging monitoring task by calculating distinct paging occasions for each USIM using offset values. This allows the device to monitor multiple USIMs' paging by visiting different time slots or frames, reducing the need for continuous monitoring and thereby lowering power consumption while maintaining comprehensive paging reception coverage.

Inventive Principle:

Principle #1Segmentation

Data Source

PatentUS20240098690A1Paging timing collision control

Publication Date: 2024.03.21 APPLE INC

AI summary

The present application relates to devices and components including apparatus, systems, and methods for paging timing collision control, with respect to exchange of offset values (e.g., IMSI offset values) between a user equipment and a network.