The proper deployment of sensors is very important for the successful completion of the sensing tasks due to the inevitable relation with the physical world. This paper presents a novel method for the redeployment of mobile nodes in a hybrid sensor network consisting of a collection of both static nodes and mobile nodes. In such a sensor network, the locomotion ability of mobile nodes helps the...

This paper presents an adaptive combined-metrics-based clustering scheme for mobile wireless sensor networks, which manages the mobile sensors by utilizing the hierarchical network structure and allocates network resources efficiently A local criteria is used to help mobile sensors form a new cluster or join a current cluster. The messages transmitted during hierarchical clustering are applied ...

Using a mobile sink is a type of promising application in wireless sensor networks (WSNs). To minimize the number of static nodes that are awake while the mobile sink is gathering data, it is beneficial to use cluster heads (CHs) for network management and operation, thereby saving energy in communication. During the network design, deciding an appropriate number of CHs is an important thing to...

Wireless Sensor Networks (WSNs) are broadly used in many applications including surveillance. There are many approaches of target tracking in WSN. Generally sensor node needs to move to different location to keep track of signal-emitting target. Time of Arrival with respect to signal is the measurement employed to make mobile sensor moving decisions. Recently Xu et al. proposed a mechanism for ...

In a Wireless Sensor Network, sensor nodes may fail for several reasons and the network may split into two or more disconnected partitions. This may deteriorate or even nullify the usefulness and effectiveness of the network. Therefore, repairing partitions is a priority. In this paper we present a method to repair network partitions by using mobile nodes. By reasoning upon the degree of connec...

In this paper we present a distributed clustering protocol for mobile wireless sensor networks. A large majority of research in clustering and routing algorithms for WSNs assume a static network and hence are rendered inefficient in cases of highly mobile sensor networks, which is an aspect addressed here. MECP is an energy efficient, mobility aware protoco...

In a wireless sensor network which consists of a base station as a data sink and a number of sensor nodes, the clustering has been adopted as a way of reducing the energy consumption of communication. The clustering, however, has suffered from the rapid burnout of cluster heads. We propose a 2-tier data collection architecture which requires single-hop intra-cluster transmission and direct comm...

Mobility strategies for wireless sensor networks (WSNs) are presented. We introduce a grazing mobility strategy for mobile WSNs, inspired by the foraging behaviour of herbivores grazing pastures. We present Bayesian network GRAZing (BNGRAZ) that implements the proposed WSN grazing strategy. BNGRAZ uses local neighbourhood information to predict coverage and connectivity performance changes rela...

One of key challenges in deploying large-scale Wireless Sensor Network (WSN) is system longevity. In this paper we propose an harvesting aware system of SMSN (Sustainable Mobile Sensor Network) as a way to extend system lifetime. The mobile sensor nodes visit remote energy station to recharge battery when node’s energy drains below a threshold level. Our framework consists of energy model, moti...

Mobile social networks are rapidly becoming an important new domain showcasing the power of mobile computing systems. These networks combine mobile location information with social networking data to enable fully context-aware environments. This paper proposes SocialFusion, a framework to support context-aware inference and recommendation by fusing together mobile, sensor, and social data. We i...