An energy efficient and Fault-Tolerant Clock Synchronization Protocol for wireless sensor networks

Swain, Amulya Ratna; Hansdah, R. C.

doi:10.1109/comsnets.2010.5432009

Cited by 10 publications

(11 citation statements)

References 14 publications

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“…The WICS and WECS protocols use the same schedule as that used in the EFCS protocol [32]. The protocol schedule consists of a sequence of synchronization phases separated by a synchronization interval.…”

Section: Weighted Average Based Clock Synchronization Protocolmentioning

confidence: 99%

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A model for the classification and survey of clock synchronization protocols in WSNs

Swain

Hansdah

2015

Ad Hoc Networks

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Section: Weighted Average Based Clock Synchronization Protocolmentioning

confidence: 99%

“…However, there are some protocols which can perform local clock synchronization better than global clock synchronization [32,33].…”

Section: Global Objective Featuresmentioning

confidence: 99%

A model for the classification and survey of clock synchronization protocols in WSNs

Swain

Hansdah

2015

Ad Hoc Networks

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“…This time information can be provided by a GPS device. Another alternative is to use one of many clock synchronization protocols for WSNs present in the literature [15] [16] [17]. Using time, the network can protect itself from replay attacks discarding a message that was eavesdropped by an observer and used later in an attack.…”

Section: A Security Threats Countermeasuresmentioning

confidence: 99%

A Trustful Infrastructure for the Internet of Things Based on EPOSMote

Fröhlich

Steiner

Rufino

2011

2011 IEEE Ninth International Conference on Dependable, Autonomic and Secure Computing

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This article describes the design, implementation and evaluation of a trustful infrastructure for the Internet of Things (IoT) based on EPOSMote. The infrastructure was built around EPOS' second generation of motes, which features an ARM processor and an IEEE 802.15.4 radio transceiver. It is presented to end users through a trustful communication protocol stack compatible with TCP/IP. Trustfulness was tackled at MAC level by extending C-MAC, EPOS native MAC protocol, with Advanced Encryption Standard (AES) capabilities that were subsequently used to encrypt and authenticate packets containing IP datagrams. Our authentication mechanism encompasses temporal information to protect the network against replay attacks. The infrastructure was designed bearing in mind the severe resource limitation typical of IoT devices. The prototype implementation was assessed for processing, memory, and energy consumption and strongly confirmed our assumptions.

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“…The energy efficient and fault tolerant clock synchronization [EFCS] protocol proposed in [5] is a synchronous internal clock synchronization protocol which uses ten synchronization rounds per synchronization phase. The EFCS protocol does not use any reference node.…”

Section: Introductionmentioning

confidence: 99%

Improving the Energy Efficiency of a Clock Synchronization Protocol for WSNs Using a TDMA-Based MAC Protocol

Watwe

Hansdah

2015

2015 IEEE 29th International Conference on Advanced Information Networking and Applications

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Clock synchronization protocols in wireless sensor networks (WSNs) provide a uniform notion of time which is required by both system as well as application level programs of WSNs. Since nodes have limited energy, it is required that the energy consumed by the clock synchronization protocols is as minimum as possible. Synchronous clock synchronization protocols execute their clock synchronization process at each node, roughly during the same real-time interval, called synchronization phase. The energy consumed by these protocols depends on the duration of the synchronization phase and how frequently the synchronization phase is executed. Hence, to minimize the energy consumption by each node, the duration of synchronization phase should be as small as possible, and the interval between consecutive synchronization phases as large as possible. Due to different drift rates of the clocks, the synchronization phases at different nodes drift apart and special techniques are required to keep them in sync. Keeping synchronization phases at neighbouring nodes in sync helps to reduce the synchronization phase. In this paper, we propose a novel technique using TDMA-based MAC protocol to keep the synchronization phases at neighbouring nodes in sync much more tightly than the existing techniques. We have applied the technique in the improved weighted-average based clock synchronization (IWICS) protocol to reduce the synchronization phase considerably and the modified TDMAbased IWICS protocol is named TIWICS protocol. This reduction in energy consumption is achieved without reducing the synchronization accuracy. Simulation results obtained using Castalia network simulator and the experimental results obtained using a testbed of WSN consisting of a few TelosB motes confirm the effectiveness of the approach.

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An energy efficient and Fault-Tolerant Clock Synchronization Protocol for wireless sensor networks

Cited by 10 publications

References 14 publications

A model for the classification and survey of clock synchronization protocols in WSNs

A model for the classification and survey of clock synchronization protocols in WSNs

A Trustful Infrastructure for the Internet of Things Based on EPOSMote

Improving the Energy Efficiency of a Clock Synchronization Protocol for WSNs Using a TDMA-Based MAC Protocol

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