mobile sensor networks rely heavily on inter-sensor connectivity for collection of data. nodes in these networks monitor different regions of an area of interest and collectively present a global overview of some monitored activities or phenomena. a failure of a sensor leads to loss of connectivity and may cause partitioning of the network into disjoint segments. a number of approaches have bee...

Sensor relocation protocols can be employed as a fault-tolerance approach to reduce or complement coverage loss caused by node failures. In this paper, we introduce a novel localized structure, information mesh, for publishing and retrieving distance-sensitive data like location information. Based on the concept of information mesh, we then propose a Meshbased Sensor Relocation Protocol (MSRP) ...

In this paper, we propose a simplified pollution adaptive mesh generation algorithm using singular elements. The algorithm based on the element pollution error indicator concentrate on boundary nodes. The automatic mesh generation method is fo llowed by either a node-relocation or a node-insertion method. The boundary node relocation phase is introduced to reduce pollution error estimates witho...

Wireless Sensor Networks (WSNs) due to their inherent features are vulnerable to single or multiple sensor node failure. Node’s failure can result in partitioning of the networks resulting in loss of inter-node connectivity and eventually compromising the operation of the sensor network. The recovery from partitioning of network is crucial for inter-node connectivity. In literature, a number of...

Wireless sensor and actor network’s connectivity and coverage plays a significant role in mission-critical applications, whereas sensors and actors respond immediately to the detected events in an organized and coordinated way for an optimum restoration. When one or multiple actors fail, the network becomes disjoint by losing connectivity and coverage; therefore, self-healing algorithm is requi...

In order to extend the availability of the wireless sensor network and to extract maximum possible information from the surveillance area, proper usage of the power capacity of the sensor nodes is important. Our work describes a dynamic relocation algorithm called MaxNetLife, which is mainly based on utilizing the remaining power of individual sensor nodes as well as properly relocating sensor ...

0140-3664/$ see front matter 2010 Elsevier B.V. A doi:10.1016/j.comcom.2010.06.012 * Corresponding author. Tel.: +886 3 5712121. E-mail addresses: [email protected] (L.-Y. Yeh) (C.-C. Huang), [email protected] (C.-E. Wu), j Huang). 1 A target is an object tracked by the sensor netwo ‘object’ are used interchangeably. Location management is an important issue for object tracking application...