摘要
定向天线系统可以有效提升Adhoc网络路由协议和接入控制的性能,已经成为Adhoc网络研究的重点。但是定向天线的DOA算法复杂度较高,因此可以考虑利用位置信息实现波束方向的调整。另外由于寻路机制的区别,不同路由协议采用定向天线传输时,性能表现有较大差别,而且MAC层协议对定向天线的有效调度也会对网络整体性能产生较大的影响。通过仿真评估和深入分析,表明了这种定向波束调整算法应用于Adhoc网络时,应该在路由与信道接入过程中联合调度,从而可以有效地提升网络性能。
Routing and MAC using directional antennas have become one of emphases in the research of mobile ad hoc networks.The typical DOA algorithms are complex,so the control of directional beams making use of location can be considered,and this scheme is flexible for the implement and transplant,Also,different routing and MAC with directional antennas may have different performances because of the characters of strategies.The comparison of performances has been done through detailed simulations,and results show that only the united mechanism using directional beams can improve the performances of networks effectively.
出处
《计算机工程与应用》
CSCD
北大核心
2006年第21期99-102,110,共5页
Computer Engineering and Applications
基金
国家973重点基础研究发展规划基金资助项目(编号:5130103)
国家重点实验室预研基金资助项目(编号:51434160103JB0201)
国家部委重点实验室基金
关键词
移动AD
HOC网络
定向天线
波束方向
定位信息
网络性能
mobile ad hoc networks,directional antenna,directivity of beams,location,networks performance
