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Mobile sensor networks are attracting a lot of interests. In these networks, nodes not only have sensing capability but mobility as well. Therefore, a few sensor nodes can a cover larger sensing area by moving around. Additionally, dangerous areas where people cannot access, such as disaster sites or radiation-contaminated areas, can be searched by nodes moving around their sensing positions autonomously...
Group mobility in WSN is of particular importance as it is can be found in many practical application scenarios. In this paper, we propose to combine HIP and NEMO protocol for supporting group mobility in WSN. The overview of HIP and NEMO protocol is introduced and the new network architecture for applying HIP and NEMO protocol in WSN is proposed, which enhances mobility management, network security...
Group mobility in wireless sensor network (WSN) is of particular importance in many practical application scenarios. In this paper, the group mobility management in IPv6 over Low power Wireless Personal Area Networks (6LoWPAN) based WSN is considered and the application of network mobility (NEMO) protocol to support group mobility in WSN is discussed. A new network architecture supporting the integration...
Group mobility management in wireless sensor network (WSN) is of particular importance as it is can be found in many practical application scenarios. In this paper, a group mobility scenario in WSN is considered and the data collected by the sensor nodes in the group is assumed to transmit either inside the group or to the corresponding node (CN) through the IP-based backbone network. Traditional...
We focus on the coverage problem in the mobile sensor network, where each node is capable of movement. Most of the prior schemes pursue coverage by uniformizing the node density or internodal distance over the area of interest. In this paper, we first argue that the uniformizing schemes are inefficient to achieve the multi-level coverage due to the phenomenon we call geometric anomaly, and that the...
Mobility is one of the most important issues in next generation networks. As wireless sensor networks are becoming the next elements of the future Internet, it is crucial to study new models that also support mobility of these nodes. This paper presents and studies three paradigms to support mobility in sensor nodes. This study is supported by prototyping. As a result a set of proposals are proposed...
Considering the high packet losses and low, varying bandwidth of GPRS/EDGE network and limited computation power of handheld devices, we present and implement a novel SVC video-on-demand system for hand-held devices over GPRS/EDGE network. For the purpose of handling varying bitrate, we propose a priority based layer switching (PLS) adaptation scheme for SVC stream, which not only performs online...
We investigate reconfiguration in large-scale mobile wireless sensor networks. Consider a field of interest (FoI) divided into sub-regions, each of which has a distinct set of sensing requirements. Consider a mobile network consisting of nodes with heterogeneous sensing capabilities distributed within the FoI. We address the problem of reconfiguring the network at minimal cost so as to satisfy all...
In mobile ad hoc networks, due to the movement of hosts, obstacles, etc, it is difficult for mobile hosts to access the data on other hosts. To solve this problem, replica distribution methods which distribute the replicas of data items to other hosts and maintain them have been proposed. We have proposed LDR (Link-aware and Density-based Rearrangement) method for dynamic rearrangement of replicas...
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