V2X Group Registration Over LTE Uu for Low-Overhead Groupcast
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Solution Overview
Problem
Current wireless communication networks lack efficient mechanisms for V2X group communication over LTE Uu, particularly in scenarios requiring group management and message dissemination to multiple V2X UEs, which is essential for applications like tele-operation and fleet management.
Innovation Solution
Implementing a method for V2X group communication that utilizes group IDs and geographical information to facilitate efficient group management and message dissemination from a V2X application server to V2X UEs over LTE Uu, enabling V2X wireless devices to register and communicate within defined groups.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If individual unicast communication is used for each V2X UE, then communication reliability is maintained, but network signaling overhead and complexity increase significantly
Solution Approach 1:
The patent combines multiple individual unicast communications into a single groupcast communication by introducing a group ID that represents multiple V2X UEs. The network node establishes a one-to-many mapping relationship where one groupcast message can be delivered to multiple UEs simultaneously, reducing signaling overhead while maintaining communication reliability through group-based addressability.
Solution Approach 2:
The group ID serves as a universal identifier that can represent multiple V2X UEs across different services and applications. This multi-functional identifier enables the same communication mechanism to serve various V2X scenarios (platooning, fleet management, tele-operation) without requiring separate individual addressing schemes, thereby reducing overall network complexity.
2Productivity
If group communication mechanisms are implemented, then network efficiency and latency are improved, but device complexity and protocol overhead increase
Solution Approach 1:
The patent segments the group communication process into distinct functional components: group ID assignment, announcement message transmission, and registration procedures. This segmentation allows the system to implement group communication efficiently by handling each aspect separately, reducing overall protocol complexity while maintaining network efficiency.
Solution Approach 2:
The network node performs preliminary actions by pre-establishing group IDs and announcing them to V2X UEs before actual group communication occurs. This preliminary configuration includes providing service information and geographical area data in advance, so that when group communication is needed, the infrastructure is already in place, reducing latency and protocol overhead during actual operation.
3Adaptability or versatility
If detailed service information and geographical area data are provided in announcement messages, then V2X application suitability is improved, but message size and processing overhead increase
Solution Approach 1:
The patent applies local quality by providing different levels of service information and geographical area data tailored to specific V2X applications and scenarios. Rather than including all possible information in every announcement message, the system selectively includes only the relevant data needed for each particular application (e.g., platooning vs. fleet management), thereby reducing message size while maintaining adaptability to different use cases.
Data Source
AI summary
A method performed by a vehicle to everything (V2X) wireless device for handling a service in a wireless communication network. The V2X wireless device receives from a network node an announcement message comprising data relating to a group of wireless devices; and transmits to the network node a response to the received announcement message for registering to the group of wireless devices.