RIS-Assisted V2X Communication for Coverage Gap Reliability

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Solution Overview

Problem

Existing wireless communication systems, particularly in sidelink (SL) and vehicle-to-everything (V2X) scenarios, face challenges in ensuring reliable and stable communication performance, especially in areas with network coverage gaps and changing environmental conditions.

Innovation Solution

Implementing a Reconfigurable Intelligent Surface (RIS) device that assists in determining and transmitting V2X communication policies, including service control, communication assistance, and transmission control information, and utilizing RIS devices to reflect electromagnetic waves to enhance communication quality.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Area of stationary object

If V2X communication is performed in areas with network coverage gaps, then communication coverage is improved, but communication reliability deteriorates

Engineering Contradiction:
Improvecommunication coverage areaVSAvoidcommunication reliability
Core Design Contradiction:
Area of stationary objectVSReliability

Solution Approach 1:

The patent introduces a Reconfigurable Intelligent Surface (RIS) device as an intermediary to assist V2X communication in coverage gap areas. The RIS device reflects electromagnetic waves to create reliable communication paths between terminal devices and the network, enabling communication in previously uncovered areas while maintaining reliability through the intermediary reflection mechanism.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Reliability

If communication policies are dynamically adjusted for different areas, then communication performance is improved, but system complexity increases

Engineering Contradiction:
Improvecommunication performanceVSAvoidsystem complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent segments the service area into multiple zones with different communication characteristics and applies specific communication policies to each segment. By dividing the coverage area into distinct regions with tailored policies, the system achieves optimized communication performance for each segment while managing overall complexity through modular policy management.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent implements location-specific communication policies where different areas receive customized communication configurations based on their specific requirements and conditions. Each terminal device receives tailored communication policies according to its geographical location, enabling optimized performance for local conditions without requiring complete system redesign.

Inventive Principle:
Principle #3Local quality

3Stability of the object's composition

If RIS devices are deployed to assist transmission, then communication stability is improved, but device quantity and deployment complexity increase

Engineering Contradiction:
Improvecommunication stabilityVSAvoiddeployment complexity
Core Design Contradiction:
Stability of the object's compositionVSDevice complexity

Solution Approach 1:

The patent designs the RIS device with multi-functionality to perform multiple roles: signal reflection, communication assistance, and policy execution. By making the RIS device universal and capable of handling multiple functions, the system reduces the need for separate specialized devices, thereby improving communication stability while controlling deployment complexity through consolidated functionality.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

Enhances communication reliability and stability by providing assistance transmission and optimizing communication resources, ensuring effective data exchange even in unreliable areas.

Implementation Method 1

utilizing RIS devices to reflect electromagnetic waves to enhance communication quality

Methodology Applied
Scientific EffectElectromagnetic wave reflection: Reflection

Data Source

PatentUS20250220397A1Electronic device, method, and storage medium for wireless communication
Publication Date: 2025.07.03 SONY GROUP CORP
  • US20250220397A1 patent drawing
  • US20250220397A1 patent drawing
  • US20250220397A1 patent drawing

AI summary

The present disclosure relates to an electronic device, method, and storage medium for wireless communication. Various embodiments for enhancing sidelink (SL) performance are described. In an embodiment, the electronic device comprises a processing circuit, and the processing circuit is configured to: determine a V2X communication policy for a specific region, wherein the V2X communication policy comprises at least one of service control information, communication assistance information, and transmission control information; and transmit the V2X communication policy, enabling a first terminal device to obtain the V2X communication policy.