基于自适应定向天线的移动Ad Hoc网络MAC层数据传输机制

Data transmission mechanism on mobile Ad Hoc MAC protocol based on adaptive beam antennas

针对移动Ad Hoc网络中定向天线引入所带来的隐藏节点、聋节点等问题,提出一种新的MAC协议——AMAC。AMAC在使用定向天线的基础上,能够使得物理层根据环境自适应调整天线参数,克服传统定向天线存在的缺陷,大幅提高网络的吞吐量及空分复用率。与同类协议相比,数据冲突、延迟、丢失等情况将被缩小到可容忍范围。

Considering the problem of hidden nodes and deaf nodes caused by the introduction of directional antennas in Ad Hoe mobile networks, this paper proposed a new Media Access Control （MAC） protoeol, called AMAC （ Adaptive MAC）. By using adaptive beam antennas, the proposed AMAC protocol allows physical layer to adjust the antenna parameters according to the environment adaptively and provides signifieant improvements in throughout and spatial reuse. Compared with similar protocol, the data conflict, delay, data missing will be reduced to a tolerable range.