The Research And Design Of Distributed Resource Discovery System Based On Mobile Agent

Mobile Agent is a kind of software which can make purposive movement among hosts by self control. It is, in essential, a compute entity which encapsulates codes, running states and data. As a higher development of object-oriented technology, mobile Agent has the characteristics of autonomy, good cooperation, mobility and self-adaptation, and it can make offline computing and reduce network traffic. This kind of technology contributes to the solution of dynamic resource discovery in the mobile environment. This thesis introduces the resource discovery algorithm of the current network, analyses the disadvantages of traditional resource discovery algorithms. Aimed at the highly dynamic characteristic of mobile network, this thesis puts forward an Agent-oriented distributed resource discovery algorithm, DDF(Double-Direction-Feedback algorithm) on the base of flooding algorithm. It also makes a design and implement of the resource discovery system which is based on the algorithm we proposed, and improves the system performance by bringing forward the concept of layered domain model. Meanwhile, to improve the flexibility of mobile Agent in the resource discovery, this thesis suggests several various travel policies, and revises Agent' s travel plan according to travel policies to make the Agent adapt to the dynamic characteristic of mobile network more better.