V2X Cell Group Targeting via MCE Coordination
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Solution Overview
Problem
Current wireless communication systems lack a method for efficiently broadcasting Vehicle-to-Everything (V2X) messages to specific cell groups, leading to unnecessary signaling and radio resource usage, as MBMS-related nodes do not have information about the cell groups, resulting in V2X messages being transmitted to unintended cells.
Innovation Solution
A method for performing V2X communication by a multi-cell coordination entity (MCE) that involves receiving and transmitting cell group information to base stations and mobility management entities, allowing for precise control of V2X message broadcasting through multicast broadcast single frequency network (MBSFN) or single-cell point-to-multipoint (SCPTM) operations, ensuring messages are only sent to relevant cells within a designated cell group.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If V2X messages are broadcast to all cells without cell group information, then coverage is extended, but unnecessary signaling and radio resource usage increase
Solution Approach 1:
The network is segmented into multiple cell groups, where each cell group is assigned a unique identifier. V2X messages are broadcast only to specific cell groups rather than all cells, dividing the coverage area into manageable segments that can be selectively addressed, thereby reducing unnecessary transmissions while maintaining comprehensive coverage capability
Solution Approach 2:
Different cell groups receive V2X messages selectively based on local requirements. Each cell group has customized reception rights, allowing the system to tailor message distribution to local needs rather than applying a uniform broadcast approach, thus optimizing radio resource usage while ensuring relevant cells receive necessary information
2Ease of operation
If V2X messages are broadcast to all cells, then message delivery is simplified, but signaling overhead increases
Solution Approach 1:
Cell group information including unique identifiers is pre-configured and stored in MBMS-related nodes before V2X message transmission. This preliminary action enables these nodes to directly address specific cell groups using the pre-assigned identifiers, simplifying the message delivery process while avoiding the need for complex real-time routing decisions that would increase signaling overhead
Solution Approach 2:
Cell group information acts as an intermediary that bridges the gap between V2X messages and target cells. Instead of directly addressing individual cells or using complex routing protocols, the system uses cell group identifiers as intermediaries to efficiently direct messages to the intended recipient groups, reducing signaling complexity and overhead
3Reliability
If cell group information is stored in MBMS-related nodes, then targeted broadcasting is enabled, but device complexity increases
Solution Approach 1:
The system changes the parameter of information representation by using compact cell group identifiers instead of storing complete cell lists or complex routing tables in MBMS-related nodes. This parameter transformation maintains the capability for targeted broadcasting while significantly reducing the complexity and storage requirements at these nodes
Data Source
AI summary
Provided are a method for performing, by a multi-cell coordination entity (MCE), a vehicle-to-everything (V2X) communication in a wireless communication system, and an apparatus for supporting the same. The method comprises the steps of: receiving, from an MME, information on a cell group and an indication which instructs the MCE to perform either of a multicast broadcast single frequency network (MBSFN) operation or a single-cell point-to-multipoint (SCPTM) operation; determining to perform either of the MBSFN operation or the SCPTM operation on the basis of the indication; and transmitting, to a base station, the information on the cell group received from the MME, on the basis of the information on the cell group and the determined operation, wherein the information on the cell group may be information related to a cell group to which a V2X message is to be delivered, and the base station may be a base station that manages cells which belong to the cell group to which the V2X message is to be delivered.