Multicast Resource Control Server for NGN QoS
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Solution Overview
Problem
In next-generation networks (NGNs), multicast routers face challenges in determining network resource states and allocating resources effectively, leading to suboptimal Quality-of-Service (QoS) for broadcast services due to the lack of centralized resource management.
Innovation Solution
The solution involves separating the routing path calculation and resource allocation functions, where multicast routers calculate paths and a resource control server allocates resources centrally, using protocols like PIM-SM and COPS, to ensure efficient resource utilization and improved QoS.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If multicast routers calculate routing paths based on individual router resource states, then routing path calculation can be performed distributedly, but resource allocation efficiency and QoS guarantee deteriorate due to lack of centralized resource management
Solution Approach 1:
The patent segments the resource management system into two independent parts: distributed routing path calculation performed by individual multicast routers, and centralized resource allocation performed by a dedicated resource allocation server. This segmentation allows each component to perform its specialized function optimally without interfering with the other, resolving the contradiction between distributed operation and centralized resource management efficiency
Solution Approach 2:
The patent introduces a resource allocation server as an intermediary component that mediates between multicast routers and network resources. This intermediary receives resource state information from routers, performs centralized resource allocation decisions, and provides resource allocation results back to routers, thereby enabling efficient resource management while maintaining distributed routing operations
2Device complexity
If no dedicated network equipment is assigned for resource allocation, then system complexity is reduced, but resource allocation effectiveness and QoS guarantee worsen
Solution Approach 1:
The resource allocation server is designed as a multi-functional device that performs multiple tasks: collecting resource state information from various multicast routers, calculating optimal resource allocation, making QoS guarantee decisions, and communicating with both routers and network resources. This universal device consolidates resource management functions that could have been distributed, maintaining system simplicity while ensuring reliable QoS through centralized control
Data Source
AI summary
Provided are a method and system for providing a multicast service in a next-generation network (NGN), which can improve the quality-of-service (QoS) of broadcast services by separating a routing path calculation function and a resource allocation function during the setting of a multicast broadcast channel and enabling a resource control server to perform centralized resource control. In the method and system for providing a multicast service in an NGN, a multicast router calculates a routing path, and a number of multicast routers on the calculated routing path issue a request for resources for a desired multimedia broadcast channel, and a resource control server allocates resources to the multicast routers on the calculated routing path.