Base Station V2X Message Reception via Local MBMS Segmentation
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Solution Overview
Problem
The existing wireless communication systems face challenges in transmitting different Vehicle to Everything (V2X) messages to various areas with the same Transport Network Gateway Identifier (TMGI), and in providing information about the Local Multimedia Broadcast Multicast Service (MBMS) entity (LME) for session establishment, leading to inefficiencies in message distribution and reception.
Innovation Solution
A method and apparatus for receiving V2X messages by a base station, which involves receiving local MBMS distribution information including an IP multicast address and an indication of allocation by a multi-cell coordination entity (MCE), allowing the base station to join the IP multicast address for V2X message reception, ensuring that V2X messages are distributed to different areas with the same TMGI and that the LME information is correctly provided for session establishment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a localized MBMS architecture is used to transmit V2X messages, then message distribution to different areas is enabled, but different V2X messages cannot be transmitted to different areas having the same TMGI
Solution Approach 1:
The patent segments the MBMS service area into multiple local MBMS entities (LMEs), each responsible for a specific geographic area. Each LME maintains independent distribution information including IP multicast addresses, enabling differentiated message distribution to different areas even when they share the same TMGI. This segmentation allows the system to simultaneously support area-specific message routing while maintaining the standardized MBMS architecture.
Solution Approach 2:
The patent introduces a new dimension of local MBMS entity identification and management alongside the traditional TMGI-based service identification. By adding the LME dimension, the system can distinguish between different geographic areas that share the same service identifier, enabling precise message routing to specific areas while maintaining compatibility with existing MBMS frameworks.
2Device complexity
If BM-SC does not provide LME information to MBMS-GW, then network architecture simplicity is maintained, but MBMS-GW cannot know to which LME a session establishment request message is transmitted
Solution Approach 1:
The patent implements preliminary action by having the BM-SC provide LME information to the MBMS-GW in advance, before session establishment requests are generated. This pre-provisioning of LME information includes mapping relationships between services and local entities, enabling the MBMS-GW to correctly route session establishment requests to the appropriate LMEs without requiring complex real-time discovery mechanisms.
Solution Approach 2:
The patent introduces an intermediary information exchange mechanism between BM-SC and MBMS-GW, where LME information is transmitted as intermediate data that facilitates proper message routing. This intermediary layer of information allows the MBMS-GW to make informed routing decisions without directly interacting with LMEs, maintaining architectural simplicity while ensuring correct message delivery.
3Device complexity
If traditional MBMS architecture is used, then network simplicity is maintained, but different V2X messages cannot be distributed to different areas with the same TMGI
Solution Approach 1:
The patent segments the traditional monolithic MBMS architecture into distributed local MBMS entities (LMEs) while maintaining the overall MBMS framework. Each LME is responsible for a specific geographic area and maintains independent distribution information, enabling area-specific message distribution. This segmentation preserves the simplicity of the traditional architecture at the network level while adding granular control at the local level.
Solution Approach 2:
The patent applies local quality by enabling each local MBMS entity to have customized distribution information and IP multicast addresses specific to its geographic area. This allows different areas to receive different V2X messages even when they share the same TMGI, while each LME operates with simplified local configuration rather than requiring complex global coordination.
Data Source
AI summary
Provided are a method of receiving a vehicle to everything (V2X) message by a base station in a wireless communication system, and an apparatus supporting the method. The method may include: receiving, from a multi-cell coordination entity (MCE), local multimedia broadcast multicast service (MBMS) distribution information including an internet protocol (IP) multicast address; receiving, from the MCE, an indication indicating whether the local MBMS distribution information is allocated by a local MBMS entity (LME); and receiving the V2X message by joining the IP multicast address on the basis of the indication and the local MBMS distribution information, wherein the local MBMS distribution information is information for IP multicast distribution of MBMS user plane data.