Full Duplex Capability-Based Collision Indications for Wireless UEs

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Solution Overview

Problem

Existing wireless communication systems face challenges in efficiently managing resource collisions due to half-duplex constraints, leading to unnecessary interference and resource inefficiencies, particularly in full duplex communication scenarios.

Innovation Solution

A UE selectively transmits or refrains from transmitting resource collision indications based on the full duplex communication capability of other UEs, using information about their communication capabilities and resource allocations to optimize simultaneous transmission and reception.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If resource collision indications are transmitted for all simultaneous transmission and reception scenarios, then resource collision detection coverage is improved, but unnecessary interference and network resource consumption increase

Engineering Contradiction:

Improveresource collision detection coverageVSAvoidunnecessary interference

Core Design Contradiction:

ReliabilityVSObject-generated harmful factors

Solution Approach 1:

The patent applies local quality by differentiating the resource collision indication behavior based on the specific full duplex capability of each target UE. Instead of applying a uniform indication rule to all UEs, the system selectively transmits indications only to UEs that cannot perform simultaneous transmission and reception, thereby avoiding unnecessary interference while maintaining reliable collision detection where needed.

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

The patent inverts the conventional approach by not transmitting resource collision indications by default, but rather transmitting them only when the target UE is determined to be incapable of full duplex operation. This inversion transforms the problem from preventing false positives to ensuring necessary indications reach the right UEs.

Inventive Principle:

Principle #13The other way round (Inversion)

2Reliability

If resource collision indications are transmitted for all simultaneous transmission and reception scenarios, then resource collision detection coverage is improved, but network resource consumption increases

Engineering Contradiction:

Improveresource collision detection coverageVSAvoidnetwork resource consumption

Core Design Contradiction:

ReliabilityVSLoss of energy

Solution Approach 1:

The system applies local quality by customizing the resource collision indication transmission based on the individual full duplex capability of each target UE. Network resources are consumed only when necessary, i.e., when the target UE cannot handle simultaneous transmission and reception, thereby optimizing the trade-off between detection coverage and resource consumption.

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

The patent implements partial action by transmitting resource collision indications only to the extent necessary - specifically, only to UEs that lack full duplex capability. This avoids the excessive action of transmitting indications to all UEs regardless of their capabilities, thereby reducing network resource consumption while maintaining adequate detection coverage.

Inventive Principle:

Principle #16Partial or excessive action

3Adaptability or versatility

If full duplex capability information is exchanged between UEs, then selective resource collision indication is enabled, but device complexity increases

Engineering Contradiction:

Improveselective resource collision indication capabilityVSAvoidinformation exchange and processing complexity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent applies universality by utilizing existing full duplex capability indication mechanisms already present in the system. Rather than introducing a completely new information exchange protocol, the invention leverages existing multi-functional signaling structures to convey the necessary capability information, thereby reducing the increase in device complexity.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The system applies self-service by enabling UEs to autonomously determine their own full duplex capability and use this information to control their own resource collision indication transmissions. Each UE independently manages its indication behavior based on its capability and the target UE's capability, reducing the need for complex centralized coordination.

Inventive Principle:

Principle #25Self-service

Data Source

PatentUS12369192B2Selective resource collision indication according to full duplex communication capability

Publication Date: 2025.07.22 QUALCOMM INC

AI summary

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive at least one of first information relating to a full duplex communication capability of a different UE or second information relating to resources allocated for a simultaneous transmission and reception for the different UE. The UE may selectively transmit an indication of a resource collision for the simultaneous transmission and reception for the different UE based at least in part on the at least one of the first information or the second information. Numerous other aspects are described.