一种新的Ad Hoc网络QoS源路由框架  

A NOVEL QoS SOURCE ROUTING ARCHITECTURE OF AD HOC

作　　者：邵逊[1] 马子骥[2] 

机构地区：[1]北京交通大学计算机与信息技术学院,北京100044 [2]湖南大学电气与信息工程学院,湖南长沙410082

出　　处：《计算机应用与软件》2009年第11期204-207,共4页Computer Applications and Software

摘　　要：该框架采用模块化思想进行设计,由可用带宽计算、接入控制、资源预留、速率控制、拥塞控制等功能模块组成。框架以带宽作为QoS的基本准标,以源路由的方式进行路由查找和数据包投递。框架通过MAC层信道监听与路由层广播相结合的方式对可用带宽进行计算。在路由建立过程中对路径进行筛选,对符合实时流QoS要求的路径进行资源预留。对流量采用速率控制和拥塞控制,避免节点移动性对QoS造成影响。该框架具有可扩展性。仿真实验表明,该框架的QoS保障机制行之有效。The architecture is designed in modularisation conception and is composed of the following modules ： Available bandwidth computing, admission control, resource preservation, rate control and congestion control, etc. It uses bandwidth as the basic QoS standard, and implements routing search and data package delivery in source routing way. The architecture calculates the available bandwidth in the way of combining MAC layer channel sniffing and routing layer broadcasting. In the process of routing establishment the paths are screened and only those paths meeting real-time flow QoS requirements are preserved as resource. It exerts rate control and congestion control on flow to avoid the impacts of nodes mobility on QoS. The architecture is scalable as well. Simulation experiments show that the QoS ensuring mechanism of the architecture works efficiently.

关 键 词：无线自组网 服务质量 源路由 实时流 

分 类 号：TP393.14[自动化与计算机技术—计算机应用技术] TN929.533[自动化与计算机技术—计算机科学与技术]