DefinePK

Abstract

Recent years there have been a lot of applications in Wireless Sensor Networks (WSNs), ranging from monitoring to event detection and target tracking. For all these applications, data gathering is one of the primary operations carried out in WSNs. In this paper, the priority based distributed scheduling (PBDS) for mobile data gathering in WSN is proposed. This proposed method involves of Three Modules such as Priority based data Storage, Data exchange Policy to avoid dropping and then distributed scheduling algorithm for data gathering is processed. At first priority based data storage module is processed where the data is classified as high and low priority based on the deadline and urgency. The high priority data is buffered near the polling points. When there is overload of data at the mobile data collector, the lower priority of data will be dropped. At the second module, data exchange policy is processed and it is used in order to avoid dropping of higher priority data, data can be exchanged between two mobile data collectors. Finally in the last module distributed scheduling algorithm is to schedule the time slots according to which the data collector could gather the maximal amount of data within a limited period.