Multicast Coordinator for Cross-Base Station Resource Allocation
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Solution Overview
Problem
Conventional wireless communication systems face challenges in providing a multicast service through terminal-to-terminal direct communication, as they rely on base station infrastructure, limiting service coverage to a single base station and preventing terminals near different base stations from receiving the multicast service.
Innovation Solution
A method and apparatus for providing a multicast service in terminal-to-terminal direct communication, where a multicast server and coordinator allocate resources independently of base stations, allowing terminals to request and receive multicast service resources, transmit data, and manage resource allocation across multiple base stations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If base station infrastructure is used for multicast service allocation, then resource control and management are improved, but service coverage is limited to single base station boundaries
Solution Approach 1:
The patent segments the multicast service management function from the base station infrastructure by introducing a dedicated multicast coordinator entity. This coordinator independently manages resource allocation and service delivery across multiple base stations, allowing terminals to receive multicast services regardless of which base station they are connected to. The segmentation enables multi-base-station coverage while maintaining reliable resource control through specialized management.
Solution Approach 2:
The patent introduces a multicast coordinator as an intermediary entity between the base station infrastructure and terminals. This coordinator receives service requests from terminals, allocates resources independently of base station boundaries, and manages multicast service delivery across multiple base stations. The intermediary resolves the conflict between base station-controlled resource management and cross-base-station service coverage.
2Area of stationary object
If terminal-to-terminal direct communication is implemented, then service coverage beyond base station boundaries is achieved, but resource allocation control becomes more complex
Solution Approach 1:
The patent extracts the resource allocation control function from the base station infrastructure and places it in a dedicated multicast coordinator. This extraction simplifies the overall system by separating concerns: the coordinator handles complex resource allocation independently of base station boundaries, while base stations focus on their traditional functions. Terminals engage in direct communication for service delivery without needing to manage complex cross-base-station resource allocation themselves.
3Device complexity
If multicast service is provided within single base station coverage, then resource management is simplified, but terminals near different base stations cannot receive the service
Solution Approach 1:
The patent creates a universal multicast coordinator that serves multiple base stations simultaneously. This coordinator performs the multi-function of managing multicast services across the entire network rather than being confined to a single base station. Terminals can access multicast services universally regardless of which base station they are connected to, as the coordinator manages resource allocation across all base stations in the network.
Data Source
AI summary
A method of providing a multicast service is provided by a terminal in a terminal-to-terminal direct communication. The terminal transmits a service start request message requesting a start of a multicast service to a multicast server, and receives a service start response message including a result of permitting a start request from the multicast server. The terminal receives, via a base station, resource information of a resource which a multicast coordinator allocates to the multicast service in accordance with a request of the multicast server, and transmits multicast service data based on the resource information.