Multi-SIM UE Paging Collision Avoidance via Offset Alignment

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Solution Overview

Problem

In wireless networks, particularly in 5G and 4G systems, Multi-Subscriber Identity Module (SIM) devices face paging collisions due to overlapping paging occasions, leading to potential loss of call reception and adverse user experience.

Innovation Solution

A method for avoiding paging collisions in Multi-SIM User Equipment (UE) involves detecting overlaps in paging occasions, determining an offset to align them, and sending this offset to network operator devices to adjust paging configurations, using Globally Unique Temporary Identifiers (GUTI) reassignment and Non-Access Stratum (NAS) signaling, ensuring efficient power management and increased reliability.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a UE accommodates multiple SIMs to connect to different networks, then connectivity and reliability are improved, but paging collision occurs when paging occasions overlap

Engineering Contradiction:

ImproveconnectivityVSAvoidpaging reception

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The UE performs a priori detection of paging collision between multiple SIMs by comparing paging occasion parameters before the collision occurs. This preliminary detection enables the UE to identify potential conflicts in advance and take corrective actions such as notifying the network or adjusting its behavior to avoid missing paging messages.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The UE provides feedback to the network about detected paging collisions by sending indications of collision parameters. This feedback mechanism allows the network to become aware of the collision situation and potentially adjust paging configurations to resolve the conflict between multiple SIMs.

Inventive Principle:

Principle #23Feedback

2Reliability

If the UE monitors paging occasions for multiple SIMs simultaneously, then call reception reliability is improved, but power consumption increases

Engineering Contradiction:

Improvecall receptionVSAvoidpower consumption

Core Design Contradiction:

ReliabilityVSUse of energy by moving object

Solution Approach 1:

The UE performs preliminary detection of paging collision parameters before actual paging reception. By identifying collisions in advance, the UE can avoid unnecessarily monitoring both paging occasions, thereby reducing power consumption while maintaining reliable call reception through selective monitoring based on collision detection results.

Inventive Principle:

Principle #10Preliminary action

Data Source

PatentUS20230403678A1Avoiding paging collision by UE comprising plurality of sims in wireless network

Publication Date: 2023.12.14 SAMSUNG ELECTRONICS CO LTD

AI summary

The disclosure relates to a communication method and system for converging a 5th-Generation (5G) communication system for supporting higher data rates beyond a 4th-Generation (4G) system with a technology for Internet of Things (IoT). The disclosure may be applied to intelligent services based on the 5G communication technology and the IoT-related technology, such as smart home, smart building, smart city, smart car, connected car, health care, digital education, smart retail, security and safety services. Embodiments herein provide a method for avoiding paging collision by a UE comprising SIMs in a wireless network.