Soft V2X Message Broker for BLE and MQTT Mode Switching
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently supporting enhanced mobile broadband communication for vehicle-to-everything (V2X) applications, particularly in scenarios where devices lack LTE/5G connectivity, limiting the service area and increasing battery consumption.
Innovation Solution
A user equipment (UE) is configured to support Soft V2X using Bluetooth Low Energy (BLE) for message transmission and reception, with a message broker determining the transmission scheme based on operation modes and battery capacity, enabling dual-mode operation with MQTT and BLE.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If LTE/5G communication is used for V2X applications, then communication reliability is improved, but service area is limited and battery consumption increases
Solution Approach 1:
The communication system is segmented into two independent parts: LTE/5G for reliable but area-limited communication, and BLE for extended area coverage. Each part handles specific communication needs, allowing the system to overcome the limitation of using only one technology.
Solution Approach 2:
The UE is designed with multi-functionality to support both LTE/5G and BLE communication protocols simultaneously. The message broker integrates multiple transmission schemes, enabling the system to adapt to different communication scenarios and extend service area while maintaining reliability.
2Reliability
If LTE/5G communication is used for V2X applications, then communication reliability is improved, but battery consumption increases
Solution Approach 1:
Instead of continuously using high-power LTE/5G communication, the system applies partial action by using low-power BLE for extended area communication when reliability requirements allow. The message broker selectively activates appropriate transmission schemes based on operational needs, reducing overall energy consumption.
Solution Approach 2:
The system changes the communication parameter (transmission scheme) dynamically. The message broker determines whether to use LTE/5G or BLE based on factors like battery capacity, operational mode, and communication requirements, optimizing the balance between reliability and energy consumption.
3Area of stationary object
If BLE is used for V2X communication, then service area is expanded and battery consumption is reduced, but communication reliability may be compromised
Solution Approach 1:
The transmission scheme is made dynamic rather than static. The message broker continuously monitors operational conditions (battery capacity, communication requirements, environmental factors) and adapts the chosen transmission scheme in real-time, switching between BLE and LTE/5G as needed to maintain reliability while maximizing service area.
4Area of stationary object
If dual-mode operation with MQTT and BLE is implemented, then service area is expanded, but device complexity increases
Solution Approach 1:
A message broker is introduced as an intermediary component that manages the complexity of dual-mode operation. The message broker handles protocol selection, message routing, and coordination between MQTT and BLE systems, shielding the application layer from complexity while enabling expanded service area through multiple communication modes.
Data Source
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.