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Mobility of sensor node in Wireless Sensor Network (WSN) is one of the key advantages of wireless over fixed communication system. But to track the sensor node in the heterogeneous network is more challenging and difficulties. In heterogeneous system, generally power consumption is more then homogeneous system. Coordination in distributed sensor network the implementation of clustering is an important...
Wireless Access Networks, such as Wi-Fi, have been widely deployed due to their convenience, portability, and low cost. However, they still suffer inherent shortcomings such as limited radio coverage, poor system reliability, and lack of security and privacy. Privacy threat is one of the critical issues in Multi hop Wireless Networks, where attacks such as traffic analysis and flow tracing can be...
Wireless Sensor Networks (WSN) are emerging because of the developments in wireless communication technology and miniaturization of the hardware. WSN consists of a large number of low-cost, low-power, multifunctional sensor nodes to monitor physical conditions, such as temperature, sound, vibration, pressure, motion, etc. As the energy available in the sensor nodes used in WSN is limited, the primary...
Wireless Multimedia Sensor Network (WMSN) is the most popular sensor network and is getting fame over the past half a decade. The main compositions of the WMSN are the sensor nodes comprising of any of sensor systems like cameras, microphones, receiving systems and so on. In such a system with the sensor nodes emitting the confidential data, an extra authentication could be incorporated to the system...
This paper presents a new routing protocol named OEERP (Optimized Energy Efficient Routing Protocol), that improves the life time of Wireless Sensor Network (WSN). It is a cluster based protocol in which the node that acts as cluster-head is changed in every time slot. This approach improves the lifetime of the WSN for two reasons mainly. The first reason is the uniform battery drain of the nodes...
Data security in wireless sensor networks include data authenticity, data confidentiality and data availability. Providing desirable data security in wireless sensor networks is a challenging one since wireless sensor networks consists of large number of sensor nodes that are generally placed in hostile or unattended environments which may be exposed to several attacks. Attacks due to node compromise...
Delivering the data in real time is important for the sensors deployed for monitoring and control applications of critical systems. If wireless sensors are used in such systems, interference from other wireless devices operating in the same premises is a major problem that can cause transmission errors and data delivery failures. Design and implementation of Interference mitigation schemes that offer...
Routing protocols in wireless sensor networks helps node to send and receive packets. Traditional hierarchical routing algorithms combine adaptability to changing environments with energy aware aspects. In this random mobility model structure, which nodes can construct from the position of their 1-hop neighbors. This also describes topology, route computation and route maintenance protocols to respond...
Resource management is a primary research area of concern in Wireless Sensor Network (WSN) since the sensors are battery powered devices. An efficient power control technique is essential to maintain reliable communication links in WSN, to maximise the battery life of the sensor node and in turn the sensor network. Hence every sensor should transmit at optimum power while maintaining connectivity...
The rising data centric Wireless sensor network (WSN) is recently emerging technology, which offers the key to isotonic situation in an un-interruptible environment application. It has the ability of keen observation and ties the information with outside world. WSN tenuously collects the dense amount of data, further communicates with the sink through various intermediate nodes. It delivers reckonable...
In multihop wireless networks, packets of a flow originating from a source node are relayed by intermediate nodes (relay nodes) and travel towards their destination along a multihop wireless path. Since the traffic forwarding capability of each node varies according to its level of contention, ideally, a node should not transmit more packets to its relay node than the corresponding relay node can...
Wireless sensor network requires robust and energy efficient routing protocols to minimise the energy consumption as much as possible. Channel fading, interference and radio irregularity create a big challenge in the design of energy efficient communication and to route the data in wireless network. To mitigate the fading effects in wireless channel, multi-input multi-output (MIMO) scheme is utilised...
Sensor networks are highly distributed networks of small and lightweight wireless nodes. In Wireless sensor networks, nodes have limited energy resources and, consequently, protocols designed for sensor networks should be energy-efficient. The decrease of the received power at the receiving nodes increases the probability of bit error and of packet loss. Alternatively, the sender nodes can use larger...
Wireless sensors are used for monitoring environments such as climate change, water quality and disaster management. Disaster management is a critical and emergent operation now, especially tsunami warning and prediction system. The Indian National Centre for Ocean Information Services (INCOIS) runs a tsunami early warning system for mitigation of oceanogenic disasters. The early warning system comprises...
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