一种基于多无线收发器的无线自组网服务质量保障机制  

A Multi-radio Based on QoS Guarantee Mechanism for Wireless Ad hoc Networks

作　　者：曹志研[1] 季振洲[1] 胡铭曾[1] 

机构地区：[1]哈尔滨工业大学计算机科学与技术学院,哈尔滨150001

出　　处：《电子与信息学报》2009年第2期457-461,共5页Journal of Electronics & Information Technology

基　　金：国家863计划项目(2002AA142020);国家自然科学基金(60475012)资助课题

摘　　要：为了提高无线自组网的容量,满足多媒体任务的服务质量(QoS)要求,该文引入多无线收发器技术,扩展单接口单信道下的无状态QoS模型SWAN为多接口多信道下的无状态QoS模型—MMSWAN。同时,提出一种多接口多信道下的QoS路由协议—MMQAODV,通过与MMSWAN的结合,实现了一种跨层的QoS保障机制。模拟试验表明,这种机制有效地提高了多媒体任务的QoS和尽力而为任务的性能,与SWAN相比延迟减少为它的2%～27%左右,提交的尽力而为数据量为它的1.29～3.55倍。In order to improve the capacity of wireless Ad hoc networks and satisfy the QoS requirements of multimedia sessions, multi-radio technique is introduced and stateless QoS model in single-interface single-channel -SWAN is extended to stateless QoS model in multi-interface multi-channel-MMSWAN. At the same time, a multi-interface multi-channel QoS routing protocol-MMQAODV is proposed, which is combined with MMSWAN to implement a cross-layer QoS guarantee mechanism. Simulation shows that the mechanism improves QoS of multimedia sessions and performances of best-effort sessions. In comparison with SWAN, end-to-end delay is reduced to its 2%-27% and delivered best-effort data are increased to 1.29-3.55 times of it.

关 键 词：无线自组网 多无线收发器 多信道 QOS模型 QOS路由协议 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]