基于方向性天线的包调度算法  

Smart Antenna-based Packets Scheduling Algorithm in Ad Hoc Networks

作　　者：周奇[1] 

机构地区：[1]广州体育职业技术学院,广东广州510650

出　　处：《通信技术》2010年第10期37-39,共3页Communications Technology

摘　　要：在无线通信中使用智能天线,在增加网络吞吐量的同时,会产生队列头数据包阻塞问题。提出基于虚拟载波侦听机制的包调度算法,该算法使用方向性网络配置矢量作为包调度的策略,将节点周边区域划分为可用区域和不可用区域,在可用区域范围内选择理想的目的数据包进行发送。计算机仿真和分析进一步表明该包调度算法可以有效解决队列头数据包阻塞问题,从而进一步提高网络吞吐量。The smart antenna could improve the network throughput while bring forth HOL（Head of Line） blocking problem in wireless ad hoc network.To address the problem,this paper proposes a novel packet schedule algorithm based on the virtual carrier sensing mechanism.By using the directional network allocation vector,the algorithm divides the areas into useful areas and bad areas,chooses the ideal packets and sends them to the useful areas.Computer simulation and performance analysis show that the HOL blocking problem could be efficiently solved,and a higher throughput could be achieved via the proposed algorithm.

关 键 词：智能天线 媒体接入控制协议 队列头阻塞 

分 类 号：TN821.91[电子电信—信息与通信工程]