VRU Cluster Messaging for Low-Battery V2X Communication

Solution Overview

Problem

Existing wireless communication systems face challenges in minimizing data exchange between servers and user equipment (UEs), leading to increased battery consumption and inefficient communication environments, particularly in V2X scenarios like vehicle platooning, advanced driving, and remote driving.

Innovation Solution

A method and apparatus that reconfigure messages based on clustering, minimizing data exchange by transmitting cluster information to VRU devices, including information on cluster areas and expected times, to optimize communication and reduce battery consumption.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Loss of information

If individual VRU messages are transmitted to all VRU devices, then complete information is provided to each device, but data exchange volume increases and battery consumption increases

Engineering Contradiction:

Improveinformation completenessVSAvoidbattery consumption

Core Design Contradiction:

Loss of informationVSLoss of energy

Solution Approach 1:

The patent merges multiple individual VRU messages into a single clustered message that contains aggregated information about multiple VRUs. Instead of transmitting separate messages for each VRU device, the system consolidates them into one message that includes cluster identifier, cluster area information, and list of VRU devices in the cluster, thereby reducing data exchange volume and battery consumption while maintaining information completeness

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The patent segments VRU messages into two types: individual messages for VRUs not in a cluster, and clustered messages for VRUs that form groups. This segmentation allows the system to apply different transmission strategies based on whether VRUs are isolated or grouped, optimizing data exchange efficiency by transmitting consolidated information only when VRUs are in proximity and form meaningful clusters

Inventive Principle:

Principle #1Segmentation

2Loss of information

If individual VRU messages are transmitted to all VRU devices, then each device receives complete information, but communication efficiency decreases

Engineering Contradiction:

Improveinformation completenessVSAvoidcommunication efficiency

Core Design Contradiction:

Loss of informationVSProductivity

Solution Approach 1:

The patent merges multiple individual VRU messages into a single clustered message that contains aggregated information about multiple VRUs. Instead of transmitting separate messages for each VRU device, the system consolidates them into one message that includes cluster identifier, cluster area information, and list of VRU devices in the cluster, thereby reducing data exchange volume and battery consumption while maintaining information completeness

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The patent segments VRU messages into two types: individual messages for VRUs not in a cluster, and clustered messages for VRUs that form groups. This segmentation allows the system to apply different transmission strategies based on whether VRUs are isolated or grouped, optimizing data exchange efficiency by transmitting consolidated information only when VRUs are in proximity and form meaningful clusters

Inventive Principle:

Principle #1Segmentation

3Loss of energy

If cluster information is transmitted to VRU devices, then data exchange is minimized, but devices must process additional cluster management logic

Engineering Contradiction:

Improvebattery consumptionVSAvoidprocessing complexity

Core Design Contradiction:

Loss of energyVSDevice complexity

Solution Approach 1:

The patent implements self-service mechanisms where VRU devices autonomously determine whether to transmit individual or clustered messages based on their own location and the locations of other VRUs. Each device independently evaluates cluster formation conditions and makes transmission decisions without requiring complex centralized coordination, thereby reducing overall system processing complexity while maintaining energy efficiency

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The patent uses preliminary action by pre-defining cluster formation conditions and message formats before transmission occurs. The system establishes predetermined rules for when VRUs should form clusters and what information should be included in clustered messages, allowing devices to simply evaluate these pre-set conditions rather than performing complex real-time decisions, thus reducing processing complexity

Inventive Principle:

Principle #10Preliminary action

Data Source

PatentUS12501243B2Method by which first server transmits second message in wireless communication system, and device therefor

Publication Date: 2025.12.16 LG ELECTRONICS INC

AI summary

A first sever receives a plurality of vulnerable road user (VRU) messages; transmits a first message to a second server on the basis of VRU information obtained from the plurality of VRU messages; and transmits , to VRU devices, a second message including second cluster information based on the first message including first cluster information, wherein, based on a presence of VRU messages satisfying cluster conditions among the plurality of VRU messages, the first message includes the first cluster information for a cluster formed for the VRU messages, and the second cluster information includes information on a first cluster region for the cluster, and information on an expected time and a second cluster region associated with the expected time.