Research On Resource Location And Delivery Of Layered Super Node MP2P

In recent years, applying P2P technology to the mobile wireless network has been drawing the attention of academic and industrial communities, the derived new topic mobile peer-to-peer (MP2P) is one of the research hotspots in the field of computer and communication technology currently. The research of MP2P has great importance in improving the ability of military cooperative combat, speeding up the process of disaster relief and promoting the circulation of user information.However, accurate and timely resource location and delivery is the precondition and basis of efficient operation in MP2P system. The MP2P architecture, resource location and delivery scheme and mobility management strategy of terminal node are mainly discussed.Firstly, the basic situation of MP2P research is summarized, including relevant concepts, the research directions involved and relevant progress, the characteristics and relevant challenges. Then the subject of resource location and delivery is introduced through the presentation of related research projects.According to the characteristics of limited bandwidth and highly dynamic topology of wireless network, weak processing capability and short lasting time of terminal equipment, an abstract and extendible MP2P architecture is put forward, and Double Index Structure Resource Location Based on Caching (DISRLBC) scheme is proposed to query the location information of destination nodes quickly. The caching mechanism is a method of cooperative caching based on utility, which can efficiently use the cache replacement strategy to improve the hit rate of subsequent query. In order to reduce the handling consumption of mobile devices, Location Assisted Data Request Delivery (LADRD) scheme or the shortest path that is returned through Dijkstra algorithm is adopted to deliver data. Precursor Temporarily Store Detection Relay (PTSDR) scheme and Ascription Domain Registration Binding (ADRB) mechanism are presented to effectively decrease the positioning failure and data delivery interruption which is caused by the mobility of terminal nodes. Finally, the design of related important data structure is given. Simulation experiments show that the proposed schemes have achieved desired results, and acquired conspicuous enhancement in resource location, delivery efficiency and mobility processing.