Pathside Communication Relay for V2X Data Distribution
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Solution Overview
Problem
Conventional vehicular ad hoc networks (VANETs) face limitations in communication range, quality of service, network security, user privacy, and scalability, particularly in high-density traffic environments and around street intersections, leading to inadequate information sharing and increased accident risks.
Innovation Solution
The implementation of pathside communication relays (PCRs) along vehicle paths, which collect and distribute pathside data among client devices using V2X wireless telecommunication circuitry, including DSRC and C-V2X protocols, to enhance information sharing and decision-making capabilities for collision avoidance and traffic management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If conventional VANETs are used with direct vehicle-to-vehicle communication, then each vehicle can exchange information directly with nearby vehicles, but the communication range is limited and information sharing is inadequate around street intersections
Solution Approach 1:
The patent introduces pathside communication relays (PCRs) as intermediary devices positioned along vehicle paths to collect and distribute pathside data. These PCRs act as mediators between vehicles, extending communication range and improving information sharing reliability around intersections by receiving data from multiple vehicles and rebroadcasting it to nearby vehicles through dedicated short-range communication (DSRC) infrastructure.
2Length of moving object
If DSRC protocol is used for vehicle-to-vehicle communication, then communication can be established within 300-1000 meters, but communication quality deteriorates in high-density traffic environments and around intersections
Solution Approach 1:
PCRs serve as intermediary nodes that receive communication signals from vehicles within their coverage area and rebroadcast the information to other vehicles. This relay mechanism maintains communication quality in high-density traffic and around intersections by ensuring continuous information flow even when direct vehicle-to-vehicle communication is blocked or overloaded.
Solution Approach 2:
The patent segments the communication network into multiple zones served by different PCRs positioned along vehicle paths. Each PCR handles communication for its specific service area, dividing the overall communication task into manageable segments that can operate reliably even in dense traffic conditions.
3Loss of information
If each vehicle establishes direct communication links with all nearby vehicles, then comprehensive information sharing is achieved, but network complexity increases and scalability is limited
Solution Approach 1:
PCRs act as centralized intermediaries that collect information from multiple vehicles and distribute it to other vehicles in their coverage area. This eliminates the need for each vehicle to establish direct communication links with all nearby vehicles, significantly reducing network complexity while maintaining comprehensive information sharing through the relay infrastructure.
Solution Approach 2:
The patent merges multiple communication functions into the PCR infrastructure, which consolidates data collection and distribution tasks that would otherwise require numerous individual vehicle-to-vehicle links. This combining approach reduces overall network complexity while preserving information sharing completeness.
4Ease of manufacture
If conventional VANETs operate without infrastructure support, then deployment is simpler, but communication security and user privacy are insufficient
Solution Approach 1:
PCRs positioned along vehicle paths serve as secure intermediary nodes that can implement authentication and encryption mechanisms for data transmission. The infrastructure-based approach allows for centralized security management while maintaining deployment simplicity, as the PCRs are pre-positioned and configured before vehicles enter the service area.
Data Source
AI summary
Pathside communication relay (PCR) for collecting and distributing pathside data among client devices. The PCR collects client data from client devices (such as vehicles, pedestrians, and roadside infrastructure) and sensor data from sensors. The PCR processes the collected client data and sensor data and generates pathside data to be distributed among the client devices. In some examples, the PCR includes wireless telecommunication circuitry for distributing the pathside data over dedicated short-range communications (DSRC) signals using the Wireless Access in Vehicular Environments (WAVE) protocol and/or Cellular-Vehicle to everything (Cellular-V2X) communications. The pathside data can include location data of client devices and other objects, ambient conditions, traffic data, and other information to facilitate improved decision-making (such as collision avoidance) by client devices.