CONACyT: Geocasting in Mobile Ad Hoc Networks Using Location Information

这项提案正在提交给NSF-CONACyT合作研究计划。该项目将与墨西哥莫雷洛斯校园的ITESM合作实施。移动自组织网络由相互通信的无线移动主机组成，在没有固定基础设施的情况下。移动自组织网络(MANET)中两个主机之间的路由可以由通过网络中的其他主机的跳跃组成。地理广播是多播概念的变体。称为Geocast区域的地理区域与Geocast相关联，并且Geocast消息被传递到该Geocast区域中存在的所有节点。地理广播对于将感兴趣的消息传递给给定区域内的所有主机非常有用。在移动自组织网络中，只要主机移入和移出Geocast区域，Geocast组的成员资格就会发生变化。该项目的主要目标是在MANET中开发基于洪泛和基于树的地理预测方法，并评估它们的性能。性能评估将基于模拟和原型实施。由于地理广播是针对特定地理广播区域的，因此使用定向天线(而不是全向天线)有望提高移动自组网中地理广播的性能。因此，本项目还将为MANET设计使用定向天线的媒体接入协议，并评估使用定向天线的地理广播的性能。

This proposal is being submitted to the NSF-CONACyT Collaborative Research program. This project will be performed in collaboration with ITESM, Campus Morelos, Mexico. Mobile ad hoc networks consist of wireless mobile hosts that communicate with each other, in the absence of a fixed infrastructure. Routes between two hosts in a Mobile Ad hoc NETwork (MANET) may consist of hops through other hosts in the network. Geocasting is a variation on the notion of multicasting. A geographical area, called geocast region, is associated with a geocast, and a geocast message is delivered to all nodes present in the geocast region. Geocasting is useful to deliver messages of interest to all hosts within a given area. In mobile ad hoc networks, membership of a geocast group changes whenever hosts move in and out of the geocast region. Primary objective of this project is to develop flooding-based and tree-based approaches for geocasting in MANET and to evaluate their performance. Performance evaluation will be based on simulations as well as a prototype implementation. Because geocasts are directed towards a specified geocast region, use of directional antennas (instead of omnidirectional antennas) is expected to improve performance of geocasting in mobile ad hoc networks. Therefore, this project will also design medium access protocols for MANET using directional antennas, and evaluate performance of geocasting with directional antennas.