【摘要】 由于无线Adhoc网络是一种由移动终端组成、网络拓扑结构动态变化的对等、自组织、多跳网络,使得传输带宽、传输功率成为具有挑战性的任务之一。分析了目前通常采用的信道接入技术(如:全向天线;CSMA/CA和洪泛)及存在的问题;在此基础上,为保证有效利用传输带宽,提高功率利用率,给出了用于定向天线的MAC的解决方案(简称DMAC)。节点通过虚拟载波侦听来重定向,实现定向传输,使功率得到优化。更多还原

【Abstract】 A wireless Ad hoc network is a kind of special peer-to-peer self-organized multi-hop network with a collection of Mobiles nodes and dynamical network topology. Because of its particular characteristiction it is a challenging task with bandwidth constraints and power consumption. The current channel access control techniques, such as omni-antenna, carrier sensing multiple access, and Flooding are is analysed. In order to facilitate communication with the networks, the other problem is to give a new MAC called directional medium access control (DMAC) for wireless Ad hoc communication using directional antennas.更多还原