The Research In Resource Sharing Technology Based On P2P In Embedded Environment

The current P2P technology has been used in many areas, The application of in the resource sharing and network transmission fields is the earliest P2P technology application and is also relatively an most mature application, and still is an important research field in parallel processing currently.In this paper, according to the application characteristics of intelligent terminal equipment, we put forward the research of embedded environment resources sharing based on P2P technology, we research some fundamental theories of the centralized P2P, distributed P2P and hybrid P2P network model, test and compare to its performance advantages and disadvantages, and based on the actual application requirements, this resource sharing system chooses the hybrid P2P network architecture. In order to design resource searching localization algorithm, we researched the principles and technology of classical Chord algorithm, and put forward hybrid and hierarchical resource locating model based on Chord for this system, in this network model, the super nodes are organized into a ring based on the classical Chord algorithm, and those pure nodes depend upon super nodes. When a pure node hopes to join the P2P network, it firstly need to find a super node which can be attached, this super node manages the pure node’s behavior and also is the agent of the pure node in the P2P network. A super node can manage more than one pure nodes, but a pure node can only corresponding to a super node, a super node and the pure nodes which the super node manages compose a "cluster" structure. The super node can release, search and locate some resource, but the pure nodes can only perform these operations by the super node. This network model can not only get a better network stability, but also can expand the application range of resources sharing. According to the theories which are researched in the paper, we develop a resource sharing system based on Android and Windows XP by using Java language. The system chooses the computers which are installed Windows XP operation system to organize into Chord ring, the Android devices such as smartphones usually are seen as pure node in the resource sharing system. By many simulations and tests, we don’t only proved the correctness of the theories study which this paper puts forward, but also check the feasibility of developing the network system based on those theories, and realize the resources sharing and transmission function.