Dynamic resource allocation system and allocation method used for supporting end-to-end time delay warranty

Abstract

The invention discloses a dynamic resource allocation system used for supporting end-to-end time delay warranty, mainly solving the problems that the existing differentiated service network QoS warranty capacity is low and network resource is not fully utilized. The system thereof comprises a boundary router, a resource manager and a core router; wherein the resource manager calculates time delay allocation value on each link of end-to-end transmission path according to time delay upper limit requirement in a service request message transmitted by the boundary router and combining link load degree in network load information and time delay estimated value of each PHB at each link port; on related core router, optimal PHB is dynamically selected for resource allocation and packet retransmission by matching of time delay allocation value and bandwidth requirement according to local available resource state. The invention can effectively balance network load, reduce QoS warranty granularity and improve network resource utilization ratio while ensuring service end-to-end time delay requirement and can be applied to IP network and packet switching network.

Description

technical field [0001] The invention belongs to the technical field of data communication, relates to a resource allocation method in a differentiated service network, and is applicable to IP networks and packet switching networks and the like. Background technique [0002] With the popularization and rapid development of the Internet, the demand for using the Internet to transmit multimedia information is also increasing, and network resources are also in a state of tension. Providing services with QoS guarantees and more reasonable network resource allocation methods for services with different QoS characteristics will become an important factor affecting the future development of the Internet. [0003] The Internet uses a connectionless-oriented IP protocol, which provides "best effort" forwarding services for all packets fairly. In the traditional IP protocol, some special fields reserved in the protocol header are expected to provide QoS guarantee and flow control for ...

AI Technical Summary

Problems solved by technology

Although these methods have improved the QoS guarantee capability of network communication services to a certain extent, the QoS guarantee granularity provided is too large to provide end-to-end delay guarantee, and because they do not consider the network load balancing status, they cannot fully Utilizes network resources, resulting in reduced scalability

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