在Ad Hoc网络中基于信息调度的QoS保证

Distributed QoS Guarantees Based on Information Scheduling in Ad Hoc Network

提出一个以信息调度为基础的分布式的QoS(DQBI)体系结构。该结构可以在移动Ad Hoc网络中为实时传输和尽力而为传输提供QoS保证。DQBI模型改进了整个系统信息端到端的延迟性能,并且通过使用请求允许接入控制和拥塞控制机制来处理网络的拥塞。最后,仿真比较了MQRD结构和DQBI结构,发现DQBI结构可以更好地确保实时流和尽力而为流实现它们期望的服务水平。

In this paper, a novel Distributed QoS architecture based on information scheduling （DQBI） is proposed to provide QoS guarantees for real-time traffic and best-effort traffic in mobile Ad Hoc networks. We present a model to decrease the end-to-end delay of the whole system, and handle network congestion by using call admission control and congestion control mechanisms. Finally, we make comparison of MQRD architecture and DQBI architecture. Simulation results show that DQBI can quite well ensure the real-time flows and best-effort flows to achieve their desired service level.