摘要
针对智能天线系统中数据包队列头阻塞和"聋节点"问题,提出一种新的数据包调度算法。根据智能天线的方向性网络配置矢量,将节点周边空间划分为干扰区域和自由区域,依次为待发队列中数据包的目的地址匹配可用的自由区域,进行数据传输。仿真结果表明,该算法能有效消除队列头阻塞和"聋节点",从而提高AdHoc网络的吞吐量性能,降低网络时延。
For the problem of Head of Line（HOL） blocking and deaf node in the smart antenna system, a novel packet scheduling algorithm is proposed. Based on the Directional Network Allocation Vector（DNAV）, it divides the surrounding space of a tagged node into interference regions and free regions, and transmits packets selected in turn from the data queue if there is an appropriately free region. Simulation results show that the algorithm can eliminate the deaf node problem and resolve the HOL blocking efficiently, which can obtain higher throughput and lower network delay.
出处
《计算机工程》
CAS
CSCD
2013年第9期157-161,共5页
Computer Engineering
基金
国家自然科学基金资助项目(61173018)
湖南省教育厅优秀青年基金资助项目(11B102)
湖南省自然科学基金资助项目(11JJ6061)
关键词
AD
HOC网络
智能天线
聋节点
队列头阻塞
数据包调度
媒介控制接入协议
Ad Hoc networks
smart antenna
deaf node
Head of Line（HOL） blocking
data packet scheduling
medium access control protocol
