2 research outputs found
Adaptive Time Synchronization for Homogeneous WSNs
Wireless sensor networks (WSNs) are being
used for observing realāworld phenomenon. It is
important that sensor nodes (SNs) must be synchronized
to a common time in order to precisely map the data
collected by SNs. Clock synchronization is very
challenging in WSNs as the sensor networks are
resource constrained networks. It is essential that clock
synchronization protocols designed for WSNs must be
light weight i.e. SNs must be synchronized with fewer
synchronization message exchanges. In this paper, we
propose a clock synchronization protocol for WSNs
where first of all cluster heads (CHs) are synchronized
with the sink and then the cluster nodes (CNs) are
synchronized with their respective CHs. CNs are
synchronized with the help of time synchronization
node (TSN) chosen by the respective CHs. Simulation
results show that proposed protocol requires
considerably fewer synchronization messages as
compared with the reference broadcast synchronization
(RBS) protocol and minimum variance unbiased
estimation (MUVE) method. Clock skew correction
mechanism applied in proposed protocol guarantees
long term stability and hence decreases reā
synchronization frequency thereby conserving more
energ
Adaptive Time Synchronization for Homogeneous WSNs
Wireless sensor networks (WSNs) are being
used for observing realāworld phenomenon. It is
important that sensor nodes (SNs) must be synchronized
to a common time in order to precisely map the data
collected by SNs. Clock synchronization is very
challenging in WSNs as the sensor networks are
resource constrained networks. It is essential that clock
synchronization protocols designed for WSNs must be
light weight i.e. SNs must be synchronized with fewer
synchronization message exchanges. In this paper, we
propose a clock synchronization protocol for WSNs
where first of all cluster heads (CHs) are synchronized
with the sink and then the cluster nodes (CNs) are
synchronized with their respective CHs. CNs are
synchronized with the help of time synchronization
node (TSN) chosen by the respective CHs. Simulation
results show that proposed protocol requires
considerably fewer synchronization messages as
compared with the reference broadcast synchronization
(RBS) protocol and minimum variance unbiased
estimation (MUVE) method. Clock skew correction
mechanism applied in proposed protocol guarantees
long term stability and hence decreases reā
synchronization frequency thereby conserving more
energ