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实现服务质量保证,在多用户、多请求接入的网络中都是采取为相应请求预留资源的方式,而多请求预留资源使得网络局部出现资源碎块.单路路由算法不能利用这些资源接入用户请求.为提高网络的资源利用率,采用多路路由方法,在单一通路不能满足连接请求要求时,寻找多条能联合满足要求的一组虚拟不相交并路,并预留资源共同满足用户的服务质量要求.为验证算法的有效性,在ns2模拟器上实现了所提出的算法,并与其他算法进行了性能比较.实验结果表明,提出的算法能很好地适应网络运行状况.在网络轻负载情况下,通信开销小.在网络重负载情况下,使用并行多路增加连接请求的接通率.将此算法应用于支持服务质量保证的多媒体数据网,能充分利用有限的网络资源,提高传输多媒体信息的能力
To achieve quality of service, multi-user and multi-request access networks adopt the way of reserving resources for corresponding requests, and many requests to reserve resources cause partial fragmentation of resources in the network.One routing algorithm can not utilize these resources Access to user requests.In order to improve the utilization rate of network resources, multi-route routing method is used to find a number of virtual disjoint merging paths that meet the requirements and reserve resources together when the single path can not meet the connection request requirements In order to verify the validity of the algorithm, the proposed algorithm is implemented on the ns2 simulator and compared with other algorithms.Experimental results show that the proposed algorithm can well adapt to the network operating conditions Under network light load, the communication overhead is small.When the network is under heavy load, parallel connection is used to increase the connection request connection rate.This algorithm is applied to the multimedia data network supporting quality of service, which can make full use of the limited Network resources, improve the ability to transmit multimedia information