V2X Proxy Coordination for Low-Latency Vehicular Communication
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Solution Overview
Problem
Existing LTE ProSe protocols are not scalable and efficient for low-latency V2X communications, limiting the effectiveness of short BSM messages for ITS safety applications, and communication with the core network may experience longer latency, especially outside network coverage.
Innovation Solution
Implementing a V2X Proxy functionality that enables direct UE-to-UE coordination of V2X operations without direct communication with the V2X ProSe function, using a PC5 interface for efficient configuration updates and message transmission, allowing UEs to operate as V2X Proxies under authorization from the V2X ProSe function.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If LTE ProSe protocols are used for V2X communications, then device connectivity is established, but latency increases and scalability is limited
Solution Approach 1:
The patent segments the V2X communication system into two distinct modes: network-based communication (using LTE ProSe) and direct PC5 interface communication. This segmentation allows devices to bypass the core network for time-critical messages, reducing latency while maintaining reliable connectivity for non-time-critical communications through the network infrastructure.
Solution Approach 2:
The patent introduces a PC5 interface as an intermediary direct communication path between V2X devices, eliminating the need for core network mediation in urgent scenarios. This intermediary channel enables low-latency peer-to-peer communication while the network remains available as a backup or for non-urgent data, resolving the latency-reliability contradiction.
2Manufacturing precision
If direct communication with V2X ProSe function is used, then configuration updates are accurate, but overhead increases and efficiency decreases
Solution Approach 1:
The patent applies local quality by allowing V2X devices to operate with pre-configured parameters locally stored in their memory. Devices can autonomously use these local configurations for immediate communications without continuously querying the network, reducing overhead. Network configuration updates are applied selectively based on message type and urgency, maintaining accuracy while minimizing overhead.
Solution Approach 2:
The patent implements preliminary action by pre-configuring V2X devices with default parameters and authorization levels before they engage in communication. This preliminary configuration enables devices to immediately participate in V2X communications with appropriate settings, reducing the need for real-time network coordination and thereby reducing overhead while maintaining configuration accuracy.
3Adaptability or versatility
If network coverage is required for V2X operations, then centralized control is maintained, but service availability decreases outside coverage areas
Solution Approach 1:
The patent implements dynamics by enabling V2X devices to dynamically switch between network-based mode and direct PC5 interface mode based on network availability and message urgency. When outside network coverage or for time-critical messages, devices autonomously operate using locally stored configurations and cached authorization information, ensuring service availability while maintaining centralized control for non-urgent operations.
Solution Approach 2:
The patent applies self-service by enabling V2X devices to autonomously manage their own communications using locally stored configurations, authorization levels, and message prioritization rules. Devices can independently establish PC5 connections, select appropriate communication modes, and manage their own resource allocation without continuous network intervention, ensuring service availability outside coverage areas while maintaining overall system coordination.
Data Source
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AI summary
Proxy coordinated wireless communication operation is described for vehicular environments. In one example, a first user equipment receives a proxy operation authorization from a vehicular environment proximity services function for the first user equipment to operate as a Proxy for the proximity services function. The first user equipment then controls configuration information of other user equipment. The first user equipment also controls the vehicular environment operation mode used by the other user equipment.