V2X Antenna Selection Using Signal Quality Comparison

Solution Overview

Problem

Current V2X direct link communication modes that rely on User Equipment (UE) independent resource selection suffer from high latency and low communication quality, leading to resource congestion and conflicts.

Innovation Solution

An antenna determination method that involves comparing the signal quality of multiple antennas to select a channel with better quality and switch to the corresponding antenna for communication, reducing latency and improving communication quality.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Quantity of substance

If UE independently selects resources for V2X direct link communication, then resource congestion is reduced, but communication latency increases and communication quality deteriorates

Engineering Contradiction:

Improveresource congestionVSAvoidcommunication latency

Core Design Contradiction:

Quantity of substanceVSLoss of time

Solution Approach 1:

The patent applies preliminary action by performing antenna signal quality assessment before actual communication occurs. The terminal device assesses signal quality of multiple antennas in advance and determines the optimal antenna for communication, thereby reducing communication latency and improving quality without requiring continuous resource selection during data transmission.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The patent implements feedback mechanisms where the terminal device reports antenna assessment results and signal quality information to the network side. This feedback enables the network to make informed resource allocation decisions, balancing independent UE resource selection with network coordination to reduce latency and improve communication quality.

Inventive Principle:

Principle #23Feedback

2Quantity of substance

If UE independently selects resources for V2X direct link communication, then network resource occupation is reduced, but communication quality deteriorates

Engineering Contradiction:

Improvenetwork resource occupationVSAvoidcommunication quality

Core Design Contradiction:

Quantity of substanceVSReliability

Solution Approach 1:

The patent applies preliminary action by performing antenna signal quality assessment before actual communication occurs. The terminal device assesses signal quality of multiple antennas in advance and determines the optimal antenna for communication, thereby reducing communication latency and improving quality without requiring continuous resource selection during data transmission.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The patent implements feedback mechanisms where the terminal device reports antenna assessment results and signal quality information to the network side. This feedback enables the network to make informed resource allocation decisions, balancing independent UE resource selection with network coordination to reduce latency and improve communication quality.

Inventive Principle:

Principle #23Feedback

3Reliability

If multiple antennas are used for signal reception, then communication quality improves, but device complexity increases

Engineering Contradiction:

Improvecommunication qualityVSAvoidantenna determination complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent applies preliminary action by performing antenna signal quality assessment before actual communication occurs. The terminal device assesses signal quality of multiple antennas in advance and determines the optimal antenna for communication, thereby reducing communication latency and improving quality without requiring continuous resource selection during data transmission.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The patent applies parameter changes by dynamically selecting different antennas based on signal quality parameters. The terminal device changes the operating parameter from using all antennas to using only the optimal antenna identified through signal quality assessment, thereby managing device complexity while maintaining communication quality.

Inventive Principle:

Principle #35Parameter changes

Data Source

PatentUS12452897B2Antenna determination method and apparatus, terminal, electronic device, and storage medium

Publication Date: 2025.10.21 ZTE CORP

AI summary

An antenna determination method, apparatus, a terminal device, an electronic device, and a storage medium are disclosed. In the embodiments of the present disclosure, on the premise of establishing communication connection with an opposite terminal device, quality of received signals of at least two antennas are compared, a channel corresponding to the signal with better signal quality is selected as a communication channel, and an antenna corresponding to the communication channel is determined for subsequent signal transmission and reception.