Soft V2X BLE Message Filtering for Low-Power UE Communication
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently supporting Vehicle-to-Everything (V2X) communication, particularly in scenarios where devices lack LTE/5G connectivity, limiting the service area and increasing battery consumption.
Innovation Solution
A UE configured to support Soft V2X related to Bluetooth Low Energy (BLE) that selectively uses BLE for message transmission and reception, determining the transmission and reception scheme based on operation modes and battery capacity, and utilizing a message broker for filtering and parsing messages with a universally unique identifier (UUID) for Soft V2X.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If LTE/5G connectivity is used for V2X communication, then communication reliability is improved, but battery consumption increases and service area is limited
Solution Approach 1:
The system dynamically switches between LTE/5G and BLE communication modes based on real-time conditions such as connectivity availability, battery status, and operational requirements. The message broker selectively determines whether to use MQTT server (LTE/5G) or BLE broadcast messages, enabling adaptive energy consumption while maintaining communication reliability when needed.
2Reliability
If LTE/5G connectivity is used for V2X communication, then communication reliability is improved, but service area is limited
Solution Approach 1:
The V2X communication system is designed to support multiple communication technologies (LTE/5G and BLE) within a single framework. The message broker can handle both MQTT server messages and BLE broadcast messages, enabling the system to operate across diverse environments including areas with LTE/5G coverage and areas without such coverage, thereby expanding the overall service area while maintaining reliability through selective protocol usage.
3Use of energy by moving object
If BLE is used for message transmission, then battery consumption is reduced and service area is expanded, but message filtering capability is limited
Solution Approach 1:
The message broker serves as an intermediary component that handles message filtering and routing. When operating in BLE mode, the message broker receives broadcast messages and performs filtering based on operational modes and message content. This intermediary function maintains low power consumption by using BLE while still providing necessary message filtering capabilities through the message broker's processing logic.
4Measurement precision
If message broker performs filtering on all broadcast messages, then message accuracy is improved, but processing time increases
Solution Approach 1:
The message broker applies selective filtering based on local conditions such as the operational mode of the UE and the transmitting UE. Instead of uniformly filtering all messages, the system tailors the filtering process to specific operational contexts (e.g., pedestrian, vehicle, PMV modes), applying filtering only when necessary to maintain message accuracy while minimizing processing time overhead.
Data Source
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AI summary
A user equipment (UE) including a receiver configured to receive a message corresponding to a Soft Vehicle to Everything (V2X) message transmitted by a Message Queuing Telemetry Transport (MQTT) server using MQTT communication or a Soft V2X Bluetooth Low Energy (BLE)-related broadcast message transmitted by another UE using BLE communication; and a controller including a message broker configured to determine whether the received message is the Soft V2X BLE-related broadcast message or the Soft V2X message transmitted by the MQTT server based on identification information included in a payload of the received message, in response to the received message being determined as the Soft V2X BLE-related broadcast message, perform filtering on the received message based on a comparison between an operation mode of the UE and an operation mode of the other UE, and in response the received message being determined as the Soft V2X message transmitted by the MQTT server, process the received message without the filtering.