V2X Communication Management Entity for Channel Congestion Control
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Solution Overview
Problem
Current V2X communication networks face challenges with channel congestion and wireless channel characteristics, leading to degraded performance in IEEE 802.11p-based vehicular ad hoc networks, particularly in high-density scenarios and under interference, which affects safety applications.
Innovation Solution
A system with a global communication management entity that determines and manages V2X communication parameters for vehicular user equipment, using a local congestion control scheme and parameter estimation engine to adjust transmission parameters based on vehicle motion states, channel conditions, and network load, to optimize communication performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If decentralized congestion control (DCC) is implemented locally in each vehicle, then transmission parameters can be adapted to keep channel load below thresholds, but global information is not available to make optimum adjustments on short time scales
Solution Approach 1:
The patent combines decentralized local DCC mechanisms with a centralized cloud-based V2X communication management server. The server aggregates channel load information from multiple vehicles, performs global optimization, and sends back coordinated parameter adjustments. This merging allows both local responsiveness and global optimization to coexist, resolving the contradiction between local adaptation capability and global information availability.
Solution Approach 2:
The cloud-based V2X communication management server acts as an intermediary between vehicles and the congested communication channel. It collects channel load information from vehicles, processes this data centrally to determine optimal transmission parameters, and distributes these parameters back to vehicles. This intermediary structure enables global optimization without requiring direct peer-to-peer coordination between vehicles.
2Reliability
If transmission parameters are adjusted frequently to adapt to changing wireless channel conditions, then communication reliability improves, but network congestion increases due to parameter update overhead
Solution Approach 1:
The system performs preliminary analysis and optimization of transmission parameters at the cloud server before they are applied by vehicles. By pre-calculating optimal parameters based on aggregated channel load information and predicting future channel conditions, the system reduces the need for frequent real-time adjustments, thereby maintaining reliability while minimizing the overhead of parameter updates.
Solution Approach 2:
The cloud-based V2X communication management server performs multiple functions: it monitors channel load, predicts congestion, optimizes transmission parameters, and coordinates updates across multiple vehicles. This multi-functionality allows the system to manage parameter adjustments efficiently, reducing unnecessary updates while maintaining communication reliability across the entire network.
3Quantity of substance
If more vehicles communicate simultaneously in high-density scenarios, then network coverage and information exchange improve, but channel congestion increases and packet delivery ratio decreases
Solution Approach 1:
The system applies different transmission parameters to different vehicles based on their local channel conditions and roles in the network. The cloud server analyzes channel load information from specific vehicles and assigns customized transmission parameters, allowing vehicles in high-density areas to transmit with optimized power and timing, thereby maintaining packet delivery ratio while supporting more simultaneous communications.
Solution Approach 2:
The system dynamically changes transmission parameters such as transmission power, packet size, and timing based on real-time channel load conditions. The cloud server monitors the number of active vehicles and adjusts parameters globally to prevent congestion, allowing the network to accommodate more vehicles while maintaining acceptable packet delivery ratios through continuous parameter optimization.
Data Source
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AI summary
Devices and methods for managing communication in a V2X communication network The present invention relates to a global communication management entity (130) for managing V2X communication parameters of a plurality of vehicular user equipments (110) of a V2X communication network (100). The global communication management entity (130) comprises: a processing unit (131) configured to determine one or more V2X communication parameters of a vehicular user equipment (110) of the plurality of vehicular user equipments (110), wherein the one or more V2X communication parameters are associated with a local V2V congestion control scheme implemented on the vehicular user equipment (110) and/or a V2V communication module (113) of the vehicular user equipment (110) for communicating with the other vehicular user equipments (110); and a communication module (133) configured to provide the one or more V2X communication parameters to the vehicular user equipment (110). Moreover, the invention relates to a corresponding V2X communication network (100), vehicular user equipment (110) and method for managing V2X communication parameters of a plurality of vehicular user equipments (110) of a V2X communication network (100).