An Evaluation of Mobility Effect on Tiny Service Discovery Protocol for Wireless Sensor Networks

In mobile sensors environment, nodes change their positions this leads to crucially affects servicediscovery of wireless sensor networks (WSNs). Therefor the accuracy of most service discovery can belimited to just small area of movement, or demands considerable maintenance efforts in term of neighbornodes allocation. A large waiting time of wireless sensor applications spent in node discovery, as nodesneed to periodically advertise their presence and be awake to discover other nodes for services. Theoptimization of waiting time, which is generally a hard task in static wireless sensor networks, is evenharder in mobile wireless sensor networks, where the neighboring nodes also change over time. In thispaper, the effect of node mobility on the performance of Tiny Service Discovery Protocol (TinySDP)in WSNs has been analyze. In order to measure and evaluate the performance of TinySDP in mobileWSNs (MWSN), three major metrics of evaluation has been considered such as, Success ratio, Numberof transmitted messages and Average waiting time. Simulation results show that the success ratio andaverage waiting time of TinySDP in mobile WSNs had decreased and the number of transmitted messageincreased.