Reference Interpolation Protocol for Time Synchronization in Wireless Sensor Networks

Park, Chongmyung; Lee, Joahyoung; Jung, Inhwa

doi:10.1007/978-3-540-73549-6_67

Cited by 1 publication

(2 citation statements)

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“…All WSN synchronization schemes [10]- [31] have four basic packet delay components: send time, access time, propagation time, and receive time as shown in Figure 7. The send time is that of the sender constructing the time message to transmit on the network.…”

Section: Synchronization Errormentioning

confidence: 99%

“…In wireless sensor networks, a lot of research [10]- [31] has already been carried out to design time synchronization protocols such as Reference Broadcast Synchronization (RBS) [11], Romer synchronization [13], TPSN (Timing Sync Protocols for Sensors Networks) [15], Two-hop time synchronization protocol for sensor networks (TTS) [18], Fast distributed multi-hop relative time synchronization protocol and estimators for wireless sensor networks [19], Long term and large scale time synchronization in wireless sensor networks (2LTSP) [20], and Average time synchronization in wireless sensor networks by pairwise messages (ATSP) [21], Time synchronization protocol based on spanning tree [28], Lightweight and Energy Efficient Time Synchronization (LEETS) Protocols [29] and Lightweight Fault-tolerant Time synchronization [30]. Some of these protocols synchronize the nodes internally by placing the nodes on common notion of time and some synchronize externally by using large number of messages to adjust the clocks of the sensor nodes with global clock.…”

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confidence: 99%

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A Novel Cluster Based Time Synchronization Technique for Wireless Sensor Networks

Gautam¹,

Chand²

2017

WSN

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Time synchronization is one of the important aspects in wireless sensor networks. Time synchronization assures that all the sensor nodes in wireless sensor network have the same clock time. There are various applications such as seismic study, military applications, pollution monitoring where sensor nodes require synchronized time. Time synchronization is mandatory for many wireless sensor networks protocols such as MAC protocols and also important for TDMA scheduling for proper duty cycle coordination. Time synchronization is a stimulating problem in wireless sensor networks because each node has its own local clock which keeps on varying due to variation in the oscillator frequency. The oscillator frequency is time varying due to ambient conditions which leads to re-synchronization of nodes time and again. This re-synchronization process is energy consuming whereas energy is constraints in WSN. This paper proposes a novel cluster based time synchronization technique for wireless sensor networks in which cluster head rotation is based on minimum clock offset. Simulation results based on energy analysis of the proposed model demonstrate that proposed novel cluster based time synchronization technique reduces the energy consumption and also the synchronization error compared with other existing protocols.

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Section: Synchronization Errormentioning

confidence: 99%