The Design of Communication Protocol and System Architecture for Mobile Agents

• Main Authors: Xu, Hai-Ti, 許海悌
• Other Authors: Chen, Wen-Xian
• Format: Others
• Language: zh-TW
• Published: 1997
• Online Access: http://ndltd.ncl.edu.tw/handle/15984280878924295157

碩士 === 國立中興大學 === 資訊科學研究所 === 85 === Mobile devices such as a Personal Digital Assistant (PDA), a notebook computer, have the needed mobility and portability for mobile users to connect to the Internet via wireless network. However, the wireless network has a lower bandwidth, lower transmission speed and higher cost. In addition, mobile devices have lower computing power, smaller memory and short battery life. As a result, the mobile device and wireless link might not be able to sustain the large among of unprocessed data seen on the current computing paradigm.In this thesis, a new computing paradigm, mobile agent, is developed to address the aforementioned issues of mobile computing. A mobile agent can act on behalf of the user, move to different hosts for execution to carry out the assigned task. In a mobile computing environment, after establishing a connection to the remote server and making a request to launch a mobile agent, the user can then disconnect from the fixed network. The user can check the results when the mobile agent has carried out the task. In this paradigm, the user does not need to maintain the connection to the remote server and the mobile device does not need to have large computing power. In addition, shorter communication between the mobile device and remote server can reduce the cost. Therefore, the mobile agent architecture is well-suited for mobile computing environment.Our objective is to design a communication protocol and system architecture for mobile agents. A prototype is also implemented to demonstrate the feasibility of this approach.