VRU Service Request Signaling for Customized V2X Services

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Solution Overview

Problem

Existing VRU-centric communication standards do not adequately consider the unique characteristics of vulnerable road users, such as pedestrians and bicyclists, including sensitive power consumption, low positioning accuracy, and limited transmitting and receiving power, necessitating improved interaction processes that enhance their participation in smart traffic systems.

Innovation Solution

An electronic device for VRUs generates a service request message with a unique identifier and service preference information, transmitting it to a network-side device to receive a customized service configuration, enabling VRUs to actively participate in V2X communication systems, including collision avoidance warnings and positioning assistance.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a call is dropped and the network side initiates a retry, then the call may be reconnected, but the user experiences an unnecessary ringback tone and delayed connection

Engineering Contradiction:

Improvecall connection reliabilityVSAvoidcall setup time

Core Design Contradiction:

ReliabilityVSLoss of time

Solution Approach 1:

The terminal proactively sends a notification message to the network side before the network initiates a call retry. This preliminary action allows the network to suppress the ringback tone in advance, preventing the user from hearing an unnecessary ringback during the reconnection process and reducing perceived call setup time.

Inventive Principle:

Principle #10Preliminary action

2Speed

If the terminal continuously monitors for network reconnection, then call recovery is faster, but power consumption increases

Engineering Contradiction:

Improvecall recovery speedVSAvoidterminal power consumption

Core Design Contradiction:

SpeedVSUse of energy by moving object

Solution Approach 1:

The terminal leverages existing network-initiated reconnection mechanisms rather than continuously monitoring for reconnection. The network side autonomously handles call retry logic, reducing the terminal's monitoring burden and power consumption while maintaining fast call recovery through the proactive notification mechanism.

Inventive Principle:

Principle #25Self-service

3Ease of operation

If the terminal sends a notification message to suppress ringback tone, then user experience improves, but signaling overhead increases

Engineering Contradiction:

Improveuser experience qualityVSAvoidsignaling message quantity

Core Design Contradiction:

Ease of operationVSQuantity of substance

Solution Approach 1:

The invention extracts only the essential notification function needed to suppress ringback tone, sending a single targeted message rather than continuous signaling. This minimal extraction approach improves user experience by eliminating unnecessary ringback tones while keeping signaling overhead low.

Inventive Principle:

Principle #2Taking out (Extraction)

Data Source

PatentEP4589999A1Electronic device, communication method, and storage medium

Publication Date: 2025.07.23 SONY GROUP CORP

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AI summary

The present disclosure relates to an electronic device, a communication method and a storage medium. An electronic device for a vulnerable road user (VRU) comprises processing circuitry configured to in response to a trigger event, generate a service request message which includes an identifier uniquely identifying a terminal device and service preference information of the VRU, transmit the service request message to a network-side device, and receive, from the network-side device, a service configuration determined based on the service preference information.