一种简单高效的移动agent控制机制

移动agent的控制机制包括移动agent的定位、终止和孤儿检测机制,该机制在移动agent系统中起着非常重要的作用。目前对agent的各种定位机制研究较多,对后两种机制研究较少,因此当前的移动agent系统大多不具备孤儿检测的能力。本文在分析研究各种控制机制的基础上,指出现有的能量机制和影子机制实现孤儿检测能力所面临的问题,而后提出了一种利用权值和路径代理机制相结合的移动agent控制机制,该机制不仅能定位移动agent的位置,而且还能有效地检测和处理在网络某结点的孤儿agent,也能根据需要终止移动agent的执行,从而能及时有效地回收被无用agent占用的软硬件资源,同时还避免了能量和影子机制的缺点,是一种较理想的控制机制。另外,该机制还具有实现简单、灵活性强等优势。

A Simple and Efficient Control Mechanism for Mobile Agent

Due to the inherent mobility and autonomy of mobile agent, it is important to control mobile agent dispatched to the inter- net. A few typical locating and controlling mechanism for mobile agent was first analyzed and described. To avoid the disadvantages of energy and shadow mechanisms, we proposed a weight- based orphan detection mechanism for mobile agent. The weight of an agent is given by user according to its importance and function complexity in its application when it was created. Then we integrated the weight- based orphan detection mechanism and path proxy location mechanism into a new control mechanism for mobile agent. Compar- ing the other control mechanisms, this mechanism not only can effectively locate mobile agent but also can detect orphan mobile agent and terminate it. Furthermore, it has simplicity in implementation, better efficiency and better fault- tolerance performance etc.