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Localization is a very important issue to wireless sensor networks. The sensor node requires accurate location information in order to achieve the purpose of real-time monitoring and transmission of information. The more the sensor nodes and GPS modules are used in localization, the higher the localization accuracy can achieve, but employing more sensor nodes also leads to high costs. Thus, how to...
Existing wireless sensor network are developing rapidly and soon will occupy a dominant place among the data collection and communication. The remote location of the sensors and automatic operation increases their vulnerability to outside intrusions and attacks. Because of out of constant sensor supply the providing of authentication is quite challenging whereas the best protocols is negotiated sensor...
Wireless sensor networks are used in many real-time applications. In WSN, effective use of energy resource is one of the challenging research issues as the battery limits the lifetime of sensor node. The Rumor Routing has advantages in energy saving by making full use of two features: clustering structure and next-hop scheme. This rumor routing algorithm in WSN allows query source to distribute query...
In Wireless Sensor Networks, topology management guarantees energy efficiency and maintains the connection among the nodes.Most of the existing systems are not providing trust among the sensor nodes.Therefore,issues in security should also be considered in the management of topology in WSN.To overcome the above problem,in this paper,we propose (TBR) a TRust Based Routing with Topology management.Moreover...
In this document, a protocol LEACH-1R meant for energy efficient & mobility aware congestion control is provided for MWSN. A LEACH-1R that transforms the LEACH by making use of first clustering round & performing the inter-cluster choosing of new CHs (cluster head) rather than aggregated reclustering. A MWSN is termed as a set of wireless mobile nodes & base station that generates an ad-hoc...
Generally the data sensed by the sensors are collected and routed to the sink in a specific manner for further processing. In this proposed work, the sink node is dynamic rather than being mobile. The dynamic sink collects the data from the pervasive environment continuously. The dynamic route (path) to the sink is established, maintained and updated. Finally the comparison is made between the mobile...
Wireless sensor network (WSN) is the interconnection of wireless nodes with limited energy and memory. These networks can be deployed for many critical applications like military operations, rescue management, fire detection and so on. In flat routing structure every node plays equal role of sensor and a router. The topology may change very frequently due to the mobile nature of nodes in WSNs. Maintaining...
Wireless Sensor Networks (WSNs) is a group of small sensor nodes having limited computation, memory, communication and sensing capabilities. The distributed nature and dynamic topology of WSN introduces very special requirements in conserving energy and providing security. To address these challenges, technique like secure and energy efficient clustering scheme with data aggregation has been developed...
Recently, research on wireless sensor networks (WSNs) has received a lot of attention because they offer an advantage of monitoring various kind of environment. The management of sensors' energy is a very important problem in wireless sensor network. Research has shown a significant contribution to increase the network lifetime and improve its performance is due to energy conservation. The goal of...
With enormous growth of wireless communication technologies, mobile phone plays an important role in future development of ubiquitous network. New cellular devices are equipped with powerful computing, communicating and storage facilities which will improve scalability, energy efficiency and decrease packet delay, etc. The performance metrics like coverage, enhanced target tracking and superior channel...
Extensive research is being done on Wireless sensor Networks (WSNs) in present decade. WSNs consist of large number of sensor nodes which perform sensing of certain phenomena and send the sensed data to the sinks. This operation consumes energy of sensor nodes which effects the lifetime of a network. To prolong the lifetime of WSNs various strategies and routing algorithms have been proposed. Use...
Wireless sensor network includes base station (sink) and battery operated sensor nodes. A sensor's energy is consumed to transmit data to the sink. Thus, a sensor's energy depletes with time. Energy consumption can be reduced by using the mobile sink which communicates between end user and sensor nodes. Mobile sink usage requires efficient reconstruction of routes from a sensor to the mobile sink...
In the mobility support standards, when a node moves between IP domains, it must be configured with a care-of address (CoA) and registers the new CoA with its home agent. As a result, before a target node is accessed its home agent must be first visited to acquire the information on the foreign network where the target node is located. Therefore, the mobility handover latency is prolonged due to the...
Wireless Sensor Network formed by huge number sensors, used to detect the physical conditions and environmental conditions. These sensors have very small computing capability and less storage. This limits its use in medical health applications. Additional Storage capacity can be achieved by cloud computing. Cloud computing is one of the innovative paradigm which provides computing resources such as...
Mobile Sinks have done a good job aiding transfer of Data across a group of static networks in recent research endeavours. A major problem is the design of paradigms for the mobility of the Collector Node (Mobile Sink) for varying applications of WSNs. Most existing methods either generate mobile sink routes in order to merely reduce the energy expenditure in the networks. In this paper, we design...
Trust is a soft security solution for Ad-hoc Wireless Networks such as Mobile Adhoc Networks (MANETs), Wireless Sensor networks (WSNs). Due to openness of the networks a malicious node can easily join and disrupt the network. Trust models are used to discriminate between legitimate and malicious nodes in the network. The characteristics of MANETs and WSNs are different so, there are some significant...
Localisation in wireless sensor network is the process of determining the geographical location of the sensor nodes. Conventional localization is space oriented which uses GPS (Global Positioning System) signal to obtain the location information of the nodes. But the GPS signals fail to work in indoor environments, the reason for which it becomes mandatory to opt for terrestrial localisation. The...
A system providing accurate environmental data for campus stakeholders to formulate and evaluate policies of the sustainable campus development is needed. This paper presents the design of WSN infrastructure capable of providing accurate, real-time and reliable environment data, namely PM2.5, SO2, CO, O3, NO2, temperature, humidity, soil moisture and light intensity to be analyzed and presented by...
Sensor localization is a fundamental and crucial problem in wireless sensor network (WSN). A few methods have been proposed to deal with this issue, while schemes with mobile anchors stand out, due to the characters of low cost, flexibility and high precision. One key issue of the anchor based scheme is path planning. Proper path planning can guarantee good coverage of the whole sensing field while...
In this paper, we present an optimal monitoring and evacuation methodologies for pilgrims in Arafat area of Makkah with the aid of Wireless Sensor and Actuator Networks (WSAN). In addition to its significant impact, the proposed application has many challenges that need to be tackled. We highlight these challenges and provide a Rings overlay that efficiently contributes to monitoring the area and...
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