【作者】 杨洁；

【导师】 李红艳；

【作者基本信息】 西安电子科技大学 ， 控制理论与控制工程， 2005， 硕士

【摘要】 随着无线网络通信的迅速的发展，一种新的网络技术——Ad hoc网络技术应运而生。这里提出的“Ad hoc技术”所标称的就是一种无线特定的网络结构，强调的是多跳、自组识、无中心的概念。Ad hoc网络当前研究的主要问题有：信道接入技术、路由协议、网络体系结构、服务质量、安全问题、容量问题、能耗节省机制等。 本文主要做了两方面的工作：第一，在信道接入技术和能耗节省方面做了深入研究。对前人提出的功率控制协议做了详细的性能分析，总结了每种协议的优缺点，以及对我们今后工作的启示。第二，提出了一种双信道的自适应调整策略，它缓解了单信道功率控制协议所无法克服的隐藏终端和暴露终端问题，达到节约耗能与提高系统容量的双重目的。更多还原

【Abstract】 Ad hoc is a new wireless communication technology. An ad hoc network is a collection of wireless mobile nodes dynamically forming a temporary network without the use of any existing network infrastructure or centralized administration. Mobile nodes in ad hoc network communicate with each other using multi-hop wireless links.The MAC protocol, network capacity and power saving are challeges ad hoc network faced in this day.In this paper, we do the following work to solve the difficulties above.First, we work on the MAC protocol and power saving in ad hoc. We learned 4 power control protocols that have been presented, and analyzed every protocol’s characters. We learned much from these power control protocols.Second, we present a self-adaptive power control protocol which works with double channles. This protocol can solve the hidden-terminal and exposed-terminal problems in the single channel protocols. With this self-adaptive power control protocol, the message collision could be efficiently avoided and the network capacity could be increased.更多还原