多服务环境下的资源分配策略研究

The Research of Multi-Service Dynamic Bandwidth Allocation Strategy

讨论了基于网络资源检测的动态带宽分配策略,在对网络资源进行动态监测的基础上,对各种服务对资源的占用情况进行在线统计。然后,根据统计分析的结果调整资源分配策略。所提出的方法能在对传统的服务提供一定保证的前提下,开展资源预留服务,使网络资源得到充分利用。用提出的动态带宽分配算法,在NS2环境下进行了仿真。仿真结果表明:该分配方法提高了网络资源利用率,降低丢包率。可提高GP类服务的服务质量,并对BE类服务中的贪婪流具有一定的抑制作用。

The dynamic bandwidth allocation strategy based on the detection and statistics of network resources is discussed, and its model is proposed. The allocation ratio of resources is modified on statistics result. The proposed method can offer RSVP under satisfying primary need of best-effort service. The algorithm is simulated in NS2, and the results demonstrate that the method can improve the utilization ratio of network resources, and fall the drop rate of packets. The method can rise the QoS of guaranteed performance service, and restraint the grabby flows of best effort service.