V2X Server Discovery via Base Station Indication
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Solution Overview
Problem
Current vehicle-to-everything (V2X) communication systems face challenges in efficiently discovering and accessing local V2X servers across different public land mobile networks, which hinders seamless communication of V2X messages among vehicles and networks.
Innovation Solution
A method where user equipment receives an indication of a local server's identity from a base station upon entering a new network region, allowing it to discover and access the local V2X server using system information blocks, multicast control channels, or multimedia broadcast multicast services, enabling the exchange of V2X messages and services regardless of the user equipment's subscription status.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If user equipment uses traditional V2X server discovery methods, then it can discover servers within its home network, but it cannot efficiently discover and access local V2X servers in visited public land mobile networks
Solution Approach 1:
The base station acts as an intermediary that provides system information blocks containing V2X server identification and access parameters. This intermediary mechanism enables user equipment to discover and access V2X servers in visited networks without requiring complex direct discovery protocols, thus improving cross-network adaptability while maintaining operational simplicity.
Solution Approach 2:
The solution segments the V2X server discovery process into network-provided system information (broadcast by base station) and user equipment processing (receiving and using the information). This segmentation allows the complex discovery task to be divided between network infrastructure and user device, improving both cross-network accessibility and ease of operation.
2Adaptability or versatility
If user equipment requests access to V2X services in visited networks, then it can obtain local server information, but the process requires multiple signaling exchanges increasing access time
Solution Approach 1:
The network performs preliminary action by pre-configuring and broadcasting V2X server identification information through system information blocks before user equipment needs to access the service. This preliminary provision of server information eliminates the need for time-consuming discovery requests and responses, reducing access time while maintaining versatile cross-network service access.
Solution Approach 2:
User equipment performs self-service by autonomously receiving and processing V2X server information from broadcast system information blocks without requiring interactive signaling exchanges. This self-service approach allows immediate access to V2X services in visited networks, reducing discovery time while maintaining adaptability across different PLMNs.
3Ease of operation
If the system provides detailed V2X server information through broadcast channels, then user equipment can easily discover servers, but network signaling overhead increases
Solution Approach 1:
The solution extracts only the essential V2X server identification and access parameters from the complete server information set and includes them in system information blocks. This extraction approach provides sufficient information for user equipment to discover and access servers easily while minimizing the quantity of signaling data transmitted over the network.
Data Source
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AI summary
Methods and apparatus, including computer program products, are provided for V2X server discovery. In some example embodiments, there may be provided a method. The method may include receiving, by a user equipment, an indication of an identity of a local server configured to provide, in the serving public land mobile network, information regarding a vehicle-based service, when the user equipment enters a region of the serving public land mobile network; and discovering, by the user equipment, the local server based on the received indication of the identity. Related systems, methods, and articles of manufacture are also disclosed.