CONACyT: Geocasting in Mobile Ad Hoc Networks Using Location Information

该提案已提交给NSF-CONACyT合作研究计划。该项目将与墨西哥莫雷洛斯校园的ITESM合作执行。 移动的ad hoc网络由相互通信的无线移动的主机组成，而不需要固定的基础设施。 在移动的Ad hoc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组成。 地理广播是多播概念的一种变体。 被称为geocast区域的地理区域与geocast相关联，并且geocast消息被递送到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。 在移动的ad hoc网络中，每当主机移入和移出geocast区域时，geocast组的成员资格改变。 这个项目的主要目标是开发基于网格和基于树的方法在移动自组网中的地理广播，并评估其性能。 性能评价将以模拟和原型实施为基础。 由于地理广播是针对一个指定的地理广播区域，使用定向天线（而不是全向天线），预计将提高性能的地理广播在移动的ad hoc网络。 因此，本计画也将设计使用定向天线的移动自组网路媒体存取协定，并评估使用定向天线的地理广播效能。

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.