MUSIM Gap Signaling via Cross-Layer API

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Solution Overview

Problem

Existing wireless communication systems face challenges in coordinating multiple user subscriber identity module (MUSIM) gaps across different networks, leading to disruptions in services and increased latency.

Innovation Solution

A method and apparatus for wireless communication that involves signaling indications of MUSIM gaps, including their start and end, through a cross-layer API from a modem to an application component in a user equipment (UE), and transmitting information associated with these gaps to an edge device via in-band signaling.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If MUSIM gap signaling is implemented across multiple networks, then service coordination capability is improved, but system complexity increases

Engineering Contradiction:

Improveservice coordination capabilityVSAvoidsystem complexity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent introduces an intermediary signaling mechanism that mediates between multiple networks and the UE. The gap information is transmitted through a standardized interface that acts as a mediator, coordinating the timing and content of gap signaling across different networks without requiring direct complex interactions between them, thus improving coordination capability while managing system complexity.

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The patent segments the gap signaling process into distinct components: gap indication signaling, gap timing information, and service flow adaptation. This segmentation allows each component to be handled independently by different network elements, making the overall system more manageable and less complex while maintaining comprehensive coordination capability.

Inventive Principle:

Principle #1Segmentation

2Measurement precision

If MUSIM gap information is transmitted frequently, then service flow adaptation accuracy is improved, but signaling overhead increases

Engineering Contradiction:

Improveservice flow adaptation accuracyVSAvoidsignaling overhead

Core Design Contradiction:

Measurement precisionVSLoss of information

Solution Approach 1:

The patent applies partial action by transmitting gap information selectively rather than continuously. The signaling is triggered based on specific conditions such as gap occurrence or changes in gap parameters, providing sufficient information for service flow adaptation without the excessive overhead of continuous transmission. This balances adaptation accuracy with signaling efficiency.

Inventive Principle:

Principle #16Partial or excessive action

Solution Approach 2:

The patent implements periodic transmission of gap information at intervals that align with MUSIM gap patterns. This periodic action ensures that the network receives timely updates for service flow adaptation while avoiding unnecessary signaling during periods when gap parameters remain unchanged, thus reducing overall signaling overhead.

Inventive Principle:

Principle #19Periodic action

Data Source

PatentUS20250176021A1Multiple user subscriber identity module gap signaling

Publication Date: 2025.05.29 QUALCOMM INC

AI summary

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may signal an indication of a start of a multiple user subscriber identity module (MUSIM) gap and an indication of an end of the MUSIM gap. The UE may transmit information associated with the MUSIM gap. Numerous other aspects are described.