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Wireless Sensor Network (WSN) is widely used in Emergency Management System (EMS) to assure requirement of safety in current society. For centralized management, it is difficult for conventional systems to assure the real-time transmission of emergency information under rapidly changing situations. Thus, based on the Autonomous Decentralized Community (ADC) concept the main route for emergency information...
Wireless Sensor Networks (WSNs) have inherent and unique characteristics rather than traditional networks. They have many different constraints, such as computational power, storage capacity, energy supply and etc. Energy aware routing protocol is very important in WSN, but routing protocol which only considers energy has not efficient performance. Therefore considering other parameters beside energy...
The performance evaluation of wireless sensor network based on passive monitoring restricted by two respects: first, passive monitoring trace is incomplete, because monitors can not capture every transmission in the network. Second, the information directly extracted from trace is insufficient. Performance evaluation always needs some implicit information, e.g., packet reception. To solving the problems...
Service gateways (SGs) are a promising approach to integrate wireless sensor and actuator networks (SANETs) with pervasive infrastructure over Internet by encapsulating distributed physical sensor and actuators into regular objects. Typically, SGs for SANETs are assumed to know operational environment in advance at design time with limited awareness of operational SANET conditions and, in the meanwhile,...
Power efficiency is a key issue in wireless sensor networks due to limited power supply. Buffer management is also crucially important in the scenario where the incoming traffic is higher than the output link capacity of the network since a buffer overflow causes power waste and information loss if a packet is dropped. There are many available buffer management schemes for traditional wireless networks...
In order to face electricity consumption of a big telecommunication operator, a monitoring system to keep under control power absorption is needed. In this paper is presented a whole management platform based on Wireless Sensor Network, built by Telecom Italia, specifically focusing on lessons from the field learnt in two-year trial and trying to highlight business model standing behind the scene.
Key management is one of the most important issues of any secure communication. With the increasing demand for the transmission security in wireless sensor networks (WSNs), it is urgent to introduce the secure and reliable key management scheme into the WSNs. In this paper, we proposed a hierarchical key management scheme to ensure the security of the network services and applications in WSNs. Comparing...
In this paper, we present an enhanced heterogeneous tree based key management scheme for security of Wireless Sensor Networks (WSNs). Our scheme combines efficiently different key management techniques in each architecture level and also it has a dynamic key renewal process. Here, whenever a node is compromised, key renewal is done by one way hash functions and simple XOR operations. This combination...
Wireless sensor network are promising to be used in a wide range of applications, the need to effective save and retrieve the data will grow. Metadata, self-describing data about sensor nodes and sensing data, assist to the data exchange between different users and understand different capabilities provided by heterogeneous sensor networks. Metadata management in resource constrained sensor nodes...
We introduce integrated parking management system (IPMS) based on wireless sensor network. The system was designed with the object of a large scale deployment in existing facilities, and has been actually deployed to monitor over 400 parking spaces. This paper describes the fundamentals of hardware and software design, and several efforts to facilitate a long-term operation and ease of management...
Data aggregation can reduce the communication cost, thereby extending the lifetime of sensor networks. One key issue in structure monitoring is data aggregation. The sensors are typically sampled at high frequencies, producing large amounts of data; limited network resources make acquiring and processing this data quite challenging. In this paper, we propose an novel data aggregation scheme in WSNs...
A central challenge facing sensor network research and development is the difficulty in providing effective autonomous management capability. This is due to a large number of control parameters, unexpected changes of the network topology, and dynamic application requirements. Network management is also a challenging task for the remote user due to the large-scale of the network and scarce visibility...
A flexible Wireless Sensor Network platform for easier implementation of diverse applications has been developed and deployed at one of the Institute Superior Tecnico - Technical University of Lisbon (IST-TUL) campus. Since its initial deployment in 2007, this test-bed has grown steadily, supporting new nodes, applications and experiments. However, some initial problems, which were solved on an ad...
Medical MoteCare is a health monitoring system prototype suitable for monitoring the elderly and the infirm. The system utilizes a wireless sensor network of MicaZ motes equipped with pulse oximeter sensors and environmental sensors, namely temperature and light. The system is based on the adaptation of three-tier and SNMP proxy network management organizational model. A key feature of the system...
Wireless sensor networks (WSNs) have promised us a new monitor and control model over the distributed computing environment. In general, these networks consist of a large number of sensor nodes densely distributed over the region of interest for collecting information or monitor & track certain specific phenomena from the physical environment. Network management in WSNs becomes extremely important...
In resource constrained wireless sensor networks (WSN), it is highly desirable to make efficient use of available buffer. Hence for the WSN designed for the monitoring applications, buffer management is a key requirement at sensor nodes. We have proposed an efficient buffer management scheme based on random linear network coding as the in-network processing on data packets. With buffer allocation...
Advancement in wireless communication and electronics has made possible the development of low cost sensor networks. Wireless sensor networks (WSNs) facilitate monitoring and controlling of physical environment from remote location with better accuracy. They can be used for various application areas (e.g. health, military, home). Due to their unique characteristics, they are offering various research...
Wireless sensor networks (WSN) are mainly designed for tracking and monitoring purposes. So far, many proposals have been made for applications, routing and link layers in WSNs. However, less work has been done in monitoring, managing and controlling of the nodes themselves. Here we are introducing a tool which supports efficient methods and techniques to monitor the individual sensor node or the...
Sink mobility has become an increasingly important requirement of various sensor network applications. Handling such mobile sink conditions brings new challenges to large-scale sensor networking. This investigation proposed a hybrid-structure routing protocol (HSRP) that combines the benefits of grid-based and cluster-based structures. Grid-based structure is designed to solve the cluster head selection...
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