Ad hoc网络中一种跨层流量分配算法——CLATA  

A cross-layer design based traffic allocation algorithm for ad hoc networks: CLATA

作　　者：孙丹丹^② 孙丹丹[2] 王朝翔[3] 丁炜[2] 

机构地区：[1]北京邮电大学电子工程学院,北京 100086 [2]北京邮电大学宽带通信网络实验室,北京 100086 [3]华北计算技术研究所,北京 100083

出　　处：《高技术通讯》2008年第2期121-125,共5页Chinese High Technology Letters

基　　金：国家自然科学基金(60372101)资助项目

摘　　要：针对 ad hoc 网络各协议层的功能都相互关联的特点,提出了一种在 ad hoc 网络中基于网络平均时延最小的跨层自适应流量分配算法(CLATA)。该算法将网络层自适应流量分配信息传递给媒体接入控制(MAC)层,以改进 MAC 层中的冲突退避算法,实现网络平均时延最小化,提高网络的利用率。仿真实验结果表明,该算法可以动态调整链路之间的流量,并具有快速的自适应性,优化网络资源的利用。According to the characteristic that the function of the protocol layers in ad hoc network interconnects, a cross-layer allocation traffic algorithm （CLATA） based on the minimal average time delay in ad hoc network is proposed. The algo rithm transfers the traffic allocation information froln the network to the media access control （MAC） layer in order to improve the backoff algorithm on MAC layer, minimize the average time delay in the network and increase the efficient use of network. The result of simulation experiments demonstrates that this algorithm can dynamically adjust the traffic between links and be in the nature of quick self-adaptation, which optimizes the utilization of network resources.

关 键 词：无线自组网 跨层设计 流量分配 媒质接入控制 退避算法 

分 类 号：TN929.5[电子电信—通信与信息系统]