【作者】 林未名；

【导师】 李明禄；

【作者基本信息】 上海交通大学 ， 计算机应用技术， 2007， 硕士

【摘要】 Ad Hoc网络是一种由若干无线通信设备临时自由组合形成的无线分组网络。它无须固定通信设施的支持,网络节点可自由移动。在Ad Hoc网络中的节点既是通信终端,又是路由器。Ad Hoc网络能随着节点的加入、离开、移动进行自组织、自管理。尽管人们提出Ad Hoc网络的最初目的是为了满足军事通信的需要。但随着研究的深入,人们发现Ad Hoc网络也可广泛应用于诸如紧急搜救、临时会议会场、无线家庭网络等民用通信领域。目前,Ad Hoc网络技术已经成为一个新的研究热点。虽然,人们对Ad Hoc网络已经进行了相当多的研究。但由于Ad Hoc网络无中心、动态拓扑、多跳路由以及节点不稳定性等特点,其中诸如路由协议设计、网络安全和QoS等很多关键问题一直没有得到解决。Ad Hoc网络MAC层的隐藏终端和暴露终端现象就是两个严重影响网络性能的问题。隐藏终端会造成网络信号传输的干扰,而暴露终端则会降低网络的空间复用度。目前被Ad Hoc网络所广泛采用更多还原

【Abstract】 The Ad Hoc Networks are composed of a collection of wireless nodes, which are connected together by their wireless links. Ad Hoc Networks don’t have the central control mechanism and don’t need the support of static communication equipment. As the nodes attend, leave or move, Ad Hoc Networks can be self organized and controlled. In the Ad Hoc Networks, each node may function as communication terminal or intermediate node (routers). One distinguishing feature is that users, when communicating to each other, may establish a multi-hop path among these wireless links, quite different with current existing networks. Another distinguishing feature is that the network topology in Ad Hoc Networks may be frequently changed and dynamically adapted. Due to their high flexibility and high survival ability, Ad Hoc networks are very much suitable for the use in battlefield communications; nonetheless, more and more civil communications such as rescue更多还原