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The Internet of Things (IoT) is the paradigm of inter connecting heterogeneous devices which are distributed globally and will be a part of the future Internet. Wireless Sensor Networks (WSN) are one of the integral classes of networks in the IoT. One of the major challenges to achieve IoT is to integrate and manage large heterogeneous networks. Autonomic network management system is the need of the...
Network management is a critical component of every network manager''''s job responsibility. This job gets more complicated as the complexity of the network grows. This complexity can be in the form of different manufacturers of deployed devices or added tiers to the network, such as an Ad Hoc Network or a Wireless Sensor Network. Automating, or semi-automating, the data analysis required in network...
The following topics are dealt with: wireless technology; cognitive radio; e-learning; signal processing; protocols; teletraffic modelling; ad hoc network; wireless sensor network; telecommunication network management; and control network.
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 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...
To streamline the development of protocols and applications for wireless sensor networks with mobile elements, we propose the use of a virtual mobility overlay (ViMobiO). Using an idea from mobile ad hoc network research, physical nodes are seen as possible locations of logical nodes, whose motion is simulated with a state transfer between physical nodes. To maximize flexibility, state transfers are...
Recent advancements in wireless communication and microchip techniques have accelerated the development of wireless sensor networks (WSNs). Key management in WSNs is a critical and challenging problem because of the inner characteristics of sensor networks: deployment in hostile environments, limited resource and ad hoc nature. In this paper we investigate the constraints and special requirements...
The following topics are dealt with: network design; ad hoc mobile network; network protocol; Web service; multimedia service; cellular wireless network; broadband wireless network; Internet technology; RFID; wireless sensor network; signal processing; data communication; data networking; network management; information theory; OFDM wireless system and MIMO system.
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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