A Research On Reliable Communication Model Between Mobile Agents

With the quick development of the Internet, the application of network has become more and more widespread. The Client/Server model, which depends on only one server, does not meet the needs of users, so that the second generation of distributed system technology came out with its main character of Object Oriented technology. Mobile Agent, as the result of the development artificial intelligent technology and mobile compute technology, now become a new research subject, because it can get over the limitation of low bandwidth and high delay of the network, and supply a new method of distributed computing. In a mobile agent system, the migration of mobile agents and the collaboration between mobile agents both depend on communication. Therefore, communication is very important for the mobile agent systems, and the quality of the tasks' fulfilling should be decided by the reliability of communication. After analyzing several typical technologies relevant to this studying field,the writer designed out a communication model in this thesis, which guarantees the reliable communication between mobile agents. In this model, mailbox is used to be the transfer of message sending, which can also prevent the phenomenal of message chasing; The position information of mobile agent is not only stored the home place of the agents, and the computer where its mailbox is stored, but also in all computers where the agents passed, so that, the burden of its home place can be reduced, the neckbottle can be avoid, and the sudden-dead agents can be detected in time; Messages are marked with priority, so the more important message can be sent to the target as soon as possible; Energy control mechanism is used, so that the useless agents can be detected through local communication, and the unlimitedly occupying of network and computer resources would never exist. Finally, the writer analyzed the communication efficiency and reliability of the communication model.