【摘要】 利用移动Agent的自主性及可以在异构的软、硬件网络环境中自由移动的特性来构建分布式LBS(Location-Based Services)系统。在带宽有限的移动网络环境中,能够实时有效的为使用非持续连接设备的LBS用户提供各种信息服务,克服了现有LBS系统必须稳定连接,客户端与服务器端不能异步工作的缺点。详细讨论了LBS系统组成、移动Agent消息与事件模型、移动Agent设计、移动Agent迁移以及客户端设计,最后实现了一个系统原型。更多还原

【Abstract】 The mobile agent can move freely from the one host to another in the network with heterogeneous software and hardware and has intelligent.The LBS system was built based on mobile agent because of these advantages.In the mobile network with limited bandwidth,it can provide the LBS users who hold the non-persistent equipments with information services in real-time and effective.The LBS systems in existence require the users keep in touch with the LBS servers stabilized in process of getting information from the network.And the client has to operate synchronized with the server.The mobile agent based LBS system can overcome these disadvantages.The discussions placed emphasis on the design of mobile agent server,the mobile agent message and event model,the mobile agent,the mobile agent transfer and the clients.At last,a prototype was implemented.更多还原