Wireless rechargeable sensor networks are becoming crucial and important in recent years for the advancement of wireless energy transmission technology. The previous research showed that not all of sensors can be recharged due to the limitation of energy capacity that mobile chargers can carry. If a sensor playing a critical role in a sensing task cannot function as usual due to exhausted energ...

i Acknowledgement The authors would like to thank Mohammed Hamid for his professional and effective supervision and providing the initial insights of applying particle swarm optimization algorithms to the coverage problem. His comments were important factors that lead to the development of the optimization strategy. Abstract Wireless sensor network is an intelligent network system which has the...

Cell breathing technique is commonly used in cellular network such as Wideband code division multiple Accesses (WCDMA) to overcome load congestion by expanding or shrinking the cell coverage. Cell breathing allows the available access point to reconfigure the cell boundaries by changing the transmitted power. In the design of cell in mobile communication systems, path loss prediction models pla...

We consider the problem of coverage and exploration of an unknown dynamic environment using a mobile robot. The environment is assumed to be large enough such that constant motion by the robot is needed to cover the environment. We present an efficient minimalist algorithm which assumes that global information is not available (neither a map, nor GPS). Our algorithm deploys a network of radio b...

The positioning of sensors in Wireless Sensor Network WSN affects coverage, communication cost and resource management.In non-deterministic deployment, mobility feature of the mobile ad-hoc network can be best exploited to reposition the sensors so as to achieve the best network coverage. The Uncovered Region Exploration Algorithm (UREA) is one such algorithm proposed in [1] for redeployment of...

a novel algorithm for the fast detection of hubs in chemical networks is presented. thealgorithm identifies a set of nodes in the network as most significant, aimed to be the mosteffective points of distribution for fast, widespread coverage throughout the system. we showthat our hubs have in general greater closeness centrality and betweenness centrality thanvertices with maximal degree, while...

For 3G cellular networks, capacity is an important objective, along with coverage, when characterizing the performance of high-data-rate services. In live networks, the effective network capacity heavily depends on the degree that the traffic load is balanced over all cells, so changing traffic patterns demand dynamic network reconfiguration to maintain good performance. Using a four-cell sampl...

Despite the tremendous bandwidth increase in 3 generation (3G) Broadband Wireless Networks (BWNs) such as Universal Mobile Telecommunication System (UMTS), maintaining the mobile users’ Quality of Service (QoS) requirements while maximizing the network operators’ revenues is still a challenging issue. Moreover, spatial distribution of network traffic has a negative impact on the overall network...

Wireless sensor network are used to monitor various physical environment. These environments are mostly highly asymmetric terrains. The deployment of the sensor node for coverage and connectivity cost should be optimized. Therefore, in sensor network, providing high connectivity and coverage becomes the critical issue. In the proposed work, coverage and connectivity is a minimization of cost fu...

Multicell cooperation has been identified as one of the underlying principles for future wireless communication systems. This paper studies the benefits of multicell cooperation in broadcast TV network from an information theoretical perspective. We define outage capacity as the figure of merit and derive the broadcast coverage area to evaluate such system. Specifically, we calculate the broadc...