Wireless UE Call Collision Resolution Through Identifier Matching

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Solution Overview

Problem

Call collisions occur when two users attempt to call each other simultaneously, leading to dropped calls due to both users being busy, resulting in a poor user experience without a method to resolve the conflict in legacy UE technology.

Innovation Solution

Implementing intelligent call collision resolution by having UEs consider the source of incoming and outgoing calls, prioritizing established connections over new calls when identifiers match, thereby allowing the continuation of ongoing calls.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If both users initiate calls to each other simultaneously, then both users attempt to establish connections, but both calls are dropped due to call collision

Engineering Contradiction:

Improvecall establishment success rateVSAvoidcall connection stability

Core Design Contradiction:

ProductivityVSReliability

Solution Approach 1:

The system performs preliminary identification of call collision by comparing the source identifier of the incoming call with the destination identifier of the outgoing call before finalizing call establishment. This preliminary detection allows the system to recognize the collision scenario and apply appropriate resolution logic, preventing both calls from being dropped simultaneously.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The user equipment acts as an intermediary by introducing identifier comparison logic that mediates between the incoming and outgoing call processes. By comparing identifiers and detecting the collision condition, the system can selectively maintain one call while dropping the other, rather than both calls failing simultaneously.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Reliability

If the system maintains strict call connection protocols, then call quality is ensured, but call collisions cause both calls to be dropped

Engineering Contradiction:

Improvecall connection stabilityVSAvoidcall establishment success rate

Core Design Contradiction:

ReliabilityVSProductivity

Solution Approach 1:

The system changes the parameter of call handling by introducing identifier comparison as a new decision criterion. Instead of uniformly dropping calls during collision scenarios, the system uses identifier matching to determine which call to maintain and which to drop, thereby improving overall call establishment success rate while maintaining connection stability for successful calls.

Inventive Principle:

Principle #35Parameter changes

3Adaptability or versatility

If the system accepts all incoming calls during outgoing call establishment, then call connectivity is maximized, but resource conflicts occur

Engineering Contradiction:

Improvecall handling flexibilityVSAvoidcall management complexity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The system performs preliminary identifier comparison to detect call collision scenarios before fully establishing conflicting calls. By comparing the source identifier of the incoming call with the destination identifier of the outgoing call in advance, the system can identify collision situations and apply resolution logic, preventing resource conflicts while maintaining flexible call handling capabilities.

Inventive Principle:

Principle #10Preliminary action

Data Source

PatentUS12457647B2Call collision resolution

Publication Date: 2025.10.28 APPLE INC

AI summary

The present application relates to devices and components including apparatus, systems, and methods to provide call collision resolution procedures in wireless communication systems.