利用指定群首设计自组网分层路由协议

基于具有组移动模型的移动Ad hoc网络，分析了传统LANMAR分层路由协议的原理。以LANMAR协议为基础，设计了能够满足上述移动Ad hoc网络要求的包含骨干网节点的物理分层网络体系结构，包括信道设置及接入方法，形成了一种指定群首的分层(DC-LANMAR)路由协议。该指定群首安装了更强大的通信设备，使用高性能的骨干网链路进行群间通信来减少路由的跳数。通过计算机仿真比较了LANMAR和DC-LANMAR协议的主要性能，证实了DC-LANMAR协议的可行性和有效性。

Design of Hierarchical Routing Protocols Based on Designated Clusterhead for Ad hoc Networks

Based on the mobile Ad hoc networks with the group mobility model, the principle of the original landmark hierarchical routing protocol (LANMAR) is analyzed. On the basis of the landmark routing protocol, a physical hierarchical structure with backbone nodes, including channel setting and access methods, is designed, which can satisfy the requirements of the mobile Ad hoc network. A novel LANMAR protocol with designated clusterheads is proposed, which is called designated clusterhead LANMAR (DC-LANMAR). The clusterhead has powerful radios and use high quality backbone links to communicate among groups to reduce hop distances. The main performances of LANMAR and DC-LANMAR are compared through computer simulations. The results verifies the feasibility and effectiveness of DC-LANMAR protocol.