A Location-Aided Content Searching Mechanism for Large Mobile Ad Hoc Network Using Geographic Clusters

摘要

An interesting and useful application in ad hoc wireless mobile community is searching and locating information in a distributed and decentralized manner. Locating and collecting information in a highly dynamic network while minimizing the consumption of scarce resources such as bandwidth and energy is the main challenge in this domain. In this paper we present a radically new location aided content searching mechanism that can determine the location and the content as well of the information searched that incurs minimum overhead. Here we have used a stable geographically clustered network that enables us to distribute the search message in a location-aided manner. In disastrous scenarios the access of emergency information, services or resources is considered to be of special interest to the user groups. Mobile terminals are there to gather information from sensors and other sources. The location-Aided content searching mechanism discussed here is concerned with efficiently delivering this information together with the geographical location of the information to the person in the field on need basis. The mobility tolerant clusters structures are used to lower the proactive traffic while minimizing the query cost. We present results from detailed simulations that demonstrate the efficiency of our mechanism and discuss the scalability of this model to larger networks.