V2X Resource Pool Handover Without Sensing

Solution Overview

Problem

Current vehicle-to-everything (V2V/V2X) communication systems experience significant delays and interruptions due to the need for UE autonomous resource selection through sensing, which can lead to prolonged data transmission delays and disruptions during handovers or state transitions.

Innovation Solution

The method involves receiving a handover command message from a base station that includes information on a first resource pool, allowing the user equipment (UE) to select a resource from a second resource pool without performing sensing, thereby reducing interruptions and improving system performance by continuing to use the initial resource pool during the sensing period.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If UE performs autonomous resource selection through sensing in V2V communication, then resource allocation reliability is improved, but data transmission delay increases significantly

Engineering Contradiction:

Improveresource allocation reliabilityVSAvoiddata transmission delay

Core Design Contradiction:

ReliabilityVSLoss of time

Solution Approach 1:

The base station pre-configures multiple resource pools (first resource pool and second resource pool) and provides this information to the UE in advance through handover command messages or system information. This preliminary preparation allows the UE to switch resource pools quickly without performing sensing, thus reducing transmission delay while maintaining reliable resource allocation through pre-planned resource availability.

Inventive Principle:

Principle #10Preliminary action

2Measurement precision

If UE performs sensing before resource selection during handover, then resource selection accuracy is improved, but handover interruption time increases

Engineering Contradiction:

Improveresource selection accuracyVSAvoidhandover interruption time

Core Design Contradiction:

Measurement precisionVSLoss of time

Solution Approach 1:

The base station pre-configures multiple resource pools (first resource pool and second resource pool) and provides this information to the UE in advance through handover command messages or system information. This preliminary preparation allows the UE to switch resource pools quickly without performing sensing, thus reducing transmission delay while maintaining reliable resource allocation through pre-planned resource availability.

Inventive Principle:

Principle #10Preliminary action

3Duration of action of stationary object

If UE continues using initial resource pool during handover, then transmission continuity is improved, but resource pool adaptability decreases

Engineering Contradiction:

Improvetransmission continuityVSAvoidresource pool adaptability

Core Design Contradiction:

Duration of action of stationary objectVSAdaptability or versatility

Solution Approach 1:

The system dynamically switches between different resource pool selection modes based on the operational state. During handover or state transitions, the UE continues using the initial resource pool (first resource pool) to maintain transmission continuity. After handover completion, the UE transitions to using the second resource pool configured for the target cell, thus adapting to the new environment. This dynamic adaptation resolves the contradiction between continuity and adaptability.

Inventive Principle:

Principle #15Dynamics

Data Source

PatentUS11667253B2System and method of reducing interruptions for vehicle to vehicle communication

Publication Date: 2023.06.06 SAMSUNG ELECTRONICS CO LTD

AI summary

An apparatus and method are provided for transmitting signals in a vehicle to vehicle (V2V)/vehicle to everything (V2X) communication system. The method includes receiving a handover command message from a base station, the handover command message comprising information on a first resource pool, selecting a resource for transmitting data from a second resource pool without sensing the second resource pool, if the handover command message further comprises information on the second resource pool, and transmitting the data based on the resource for transmitting data from the second resource pool.