An Energy Efficient Proposed Framework for Time Synchronization Problem of Wireless Sensor Network
Now a day's Wireless Sensor Network are used in various applications where full or partial time synchronization plays a vital role. Basic aim of Time synchronization is to achieve equalization of local time between all the nodes within the network. This paper proposes a new framework for time synchronization problem of wireless sensor network. Time synchronization protocols are very popular and widely used in WSN now days. An analysis has been performed utilizing the proposed frame work, which leads to a conclusion that it consumes less energy than the traditional time synchronization protocols: Reference Broadcast Time Synchronization and Time Sync Protocol for Sensor Network. It has been observed that the proposed frame work do not require a Global Positioning System or any other external system to coordinate with time, as a typical Network Time Protocol for wireless sensor system uses. The proposed time synchronization protocol is categorized as peer to peer, clock correcting sender receiver network wide synchronization protocol depending upon the characteristics of WSN. The maximum probability theory is used in order to analyze the clock offset. It was observed that resynchronization interval is required to achieve a specific level of synchronization correctness. Results are obtained by simulating the WSN on NS2 to demonstrate the energy efficient feature of the proposed protocol.