Dispatch of Mobile Resources in Wireless Sensor Networks

• Main Authors: Chih-wei Wei, 魏至瑋
• Other Authors: Tzung-shi Chen
• Format: Others
• Language: en_US
• Published: 2008
• Online Access: http://ndltd.ncl.edu.tw/handle/24617752809722589975

碩士 === 國立臺南大學 === 數位學習科技學系碩士班 === 96 === With the rapid developments in wireless communication technology and Micro Electro Mechanical System (MEMS), the wireless sensor network (WSN) has been achieved in reality. In this thesis, we focus on the discussions for the services providing with the mobile resources in the WSN. Because the dispatch of the mobile resources has to be involved with the user, to motivate our research, we randomly deploy some mobile resources around the network, and with the information of the resources we make the WSN be able to dispatch these resources to the request node by itself without the dispatch operation of the user. We proposed one centralized mechanism which is Centralized Dispatch Mechanism (CDM), and three distributed mechanisms included Location-based Dispatch Mechanism (LDM), Hop-Count-based Dispatch Mechanism (HCDM), and Aggregation-based Dispatch Mechanism (ADM). In these distributed dispatch mechanisms, our objective is to make the sensors dispatch the applicable resources locally for the events. With the locking mechanism and updating mechanism in these dispatch mechanisms, our dispatch operation can avoid the situation that the sensors dispatch the resources which have been assigned to certain request and the information will be updated for reuse after the resources are dispatched. In our simulation result, with the two objective functions and dispatch mechanisms we proposed, we show the advantage which is to minimize the dispatch distance of resources and maximize the network lifetime.