V2X Network Communication Using eMBMS Multicast Broadcasting
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The reliance on unicast channels for delivering sensor and telemetric data in V2X communication leads to significant bandwidth usage, reducing spectrum efficiency and potentially overwhelming cellular networks.
Innovation Solution
Utilizing multicast services, specifically evolved multimedia broadcast multicast services (e.g., eMBMS), to map sensor data with a tracking area code and broadcast it to a designated service area, allowing efficient delivery of data to vehicles and IoT devices via a single multicast channel.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If unicast channels are used to deliver sensor data and telemetric data to vehicles, then data delivery reliability is improved, but bandwidth usage increases significantly and spectrum efficiency decreases
Solution Approach 1:
The patent merges multiple unicast data streams into a single multicast broadcast channel. Instead of sending sensor data and telemetric data separately to each vehicle via individual unicast channels, the system combines these data streams and transmits them simultaneously through one multicast channel, thereby reducing bandwidth consumption while maintaining data delivery reliability to all vehicles in the service area.
Solution Approach 2:
The multicast channel serves multiple functions simultaneously: it delivers sensor data, telemetric data, and other V2X information to multiple vehicles in one transmission. This multi-functional approach replaces multiple dedicated unicast channels, improving spectrum efficiency while ensuring reliable data delivery to all receiving vehicles.
2Reliability
If unicast channels are used for V2X communication, then individual data delivery is ensured, but spectrum efficiency is reduced
Solution Approach 1:
The patent combines multiple data streams that would otherwise require separate unicast channels into a single multicast broadcast channel. This merging approach maintains individual data delivery integrity through proper packet identification and routing while significantly improving spectrum efficiency by eliminating redundant transmissions to multiple vehicles.
3Loss of information
If all sensor data and telemetric data are sent via unicast, then complete data delivery is achieved, but bandwidth is overwhelmed
Solution Approach 1:
The patent merges sensor data and telemetric data transmissions into a single multicast channel, reducing the total bandwidth capacity required. By combining these data streams and using efficient multicast routing, the system ensures complete data delivery to all vehicles without overwhelming the available bandwidth resources.
Solution Approach 2:
Instead of creating multiple separate data copies for each vehicle through unicast, the system creates a single multicast data stream that is efficiently distributed to multiple vehicles. This copying approach reduces bandwidth consumption while ensuring all vehicles receive the complete data set needed for autonomous driving operations.
Data Source
AI summary
An evolved multimedia broadcast multicast services (eMBMS) core may map sensor data or telemetry data from a central repository server (e.g., tag it with an area code from where the data is being generated) to a service area. The eMBMS core may inform the radio access network to create a service area for the specific area code, which may be part of or an entire city, county, or the like. Then the radio access network may broadcast the data to the vehicles or devices in the specific area code.