V2X Service Identification via PDU-Based Request Response
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current wireless communication systems face challenges in quickly identifying supportable services between user equipment (UEs), leading to unnecessary latency and potential safety risks, especially in vehicle-to-everything (V2X) applications where timely information exchange is critical for safety.
Innovation Solution
A method where a UE transmits a request with identification information to neighboring UEs to quickly determine supportable services, including V2X services, by using a protocol data unit (PDU) that indicates whether the data is for application data or service supportability, allowing efficient identification of services via the same physical channel.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If traditional service identification methods are used, then service supportability can be determined, but latency increases and safety risks arise in V2X applications
Solution Approach 1:
The patent applies preliminary action by having UEs broadcast their supported service list in advance before actual service establishment is needed. This allows neighboring UEs to quickly identify compatible services without requiring real-time capability negotiation, thereby reducing latency while maintaining reliability for safety-critical V2X applications
Solution Approach 2:
The patent implements feedback mechanisms where UEs respond to service requests by indicating supportability status. This feedback loop enables rapid service discovery and establishment by immediately confirming or rejecting service requests based on pre-broadcast capability information, reducing the time needed for service identification while ensuring reliable connection establishment
2Reliability
If service supportability is determined through detailed capability exchange, then service compatibility is ensured, but information transmission time increases
Solution Approach 1:
The patent extracts only the essential service supportability information from complete capability descriptions and broadcasts this condensed service list in advance. By taking out only the critical compatibility indicators rather than exchanging full capability detail sets, the system ensures service compatibility while significantly reducing information transmission time
Solution Approach 2:
The patent segments the service capability information into distinct service types and supportability indicators, allowing UEs to broadcast and process only the relevant segmentation of capability information needed for compatibility determination. This segmentation enables efficient service discovery by processing only essential segments rather than complete capability datasets
3Adaptability or versatility
If UEs broadcast service requests to all neighboring UEs, then service discovery is comprehensive, but energy consumption increases
Solution Approach 1:
The patent applies partial action by having UEs broadcast service requests only to neighboring UEs within a defined range rather than attempting to reach all possible devices. This partial broadcasting approach maintains comprehensive service discovery capability for relevant neighboring devices while significantly reducing energy consumption compared to universal broadcasting
Data Source
AI summary
One aspect of the present disclosure provides a method for a first user equipment (UE) to identify a supportable service in a wireless communication system, the method including transmitting, to a second UE, a request that is related to a first service and includes identification information related to the first UE, receiving, from the second UE, a response to the request related to the first service, and transmitting first service data to the second UE based on the response, and thus a V2X UE can stably provide ultra-low latency, enhanced mobile broadband, and massive connectivity required in the 5G communication system.