在无线网络技术飞速发展的今天,无线移动自组织网络(Ad Hoc网络)的随时随地接入性,使其具有广阔的应用前景。但是同时Ad Hoc网络又有其脆弱性的一面,如由于节点移动导致网络拓扑动态多变以及链路连接的动态变化,无线信道具有不稳定性,业务流具有很强的突发性等,这些都使得网络中业务流的QoS得不到有效保障。因此,本文以跨层设计为思路,重点研究了Ad Hoc网络中MAC层和路由层技术。 Nowadays, with the rapid development of wireless network technology, wireless ad hoc network (Ad Hoc network) has the wide application prospect anytime and anywhere. However, at the same time, Ad Hoc networks have their own vulnerabilities. For example, dynamic changes of network topology and link connections due to node mobility result in instability of wireless channels and strong burst of traffic. All make the QoS of business flow in the network can not be effectively guaranteed. Therefore, this paper is based on the idea of ​​cross-layer design, focusing on the MAC layer and routing layer technology in Ad Hoc networks.