Designing cost-efficient, secure network protocols for Wireless Sensor Networks (WSNs) is a challenging problem because sensors are resource-limited wireless devices. Security services such as authentication and improved pairwise key establishment are critical to high efficient networks with sensor nodes. For sensor nodes to correspond securely with each other efficiently, usage of cryptographi...

In a wireless sensor network (WSN), a large number of sensor nodes have to collect and forward data hop-by-hop to a sink. This paper presents an adaptive data collection (ADC) scheme with dynamic grid-length adjustments for mobile sinks in a grid-based WSN. In the proposed ADC, a mobile sink collects data along the Xand Y-axis of the grid. Due to simultaneous collections of multiple mobile sink...

This paper presents a new approach based on the use of many data collectors, which we designate Mini-Sinks (MSs), instead of a single sink to collect the data in order to improve Wireless Sensor Network (WSN) performance. One or mode MS are mobile and move according to a controlled arbitrary mobility inside the sensor field in order to maintain a fully-connected network topology, collecting dat...

Recently, the “big dat” emerged as a hot topic because of the tremendous growth of the Information and Communication Technology (ICT). One of the highly anticipated key contributors of the big data in the future networks is the distributed Wireless Sensor Networks (WSNs). Although the data generated by an individual sensor may not appear to be significant, the overall data generated across nume...

Sensor nodes usually have limited energy supply and they are impractical to recharge. How to balance traffic load in sensors in order to increase network lifetime is a very challenging research issue. Many clustering algorithms have been proposed recently for wireless sensor networks (WSNs). However, sensor networks with one fixed sink node often suffer from a hot spots problem since nodes near...

Wireless sensor network (WSN) is considered as the enabling technology to bridge the gap between the physical and digital world. Some of the applications environments ofWSN require amobile sink to operate in the sensor field where delayed and/or partial data delivery might lead to inappropriate conclusions and thus require high quality of service in terms of latency and packets delivery ratio. ...

Mobile sink groups play crucial roles to perform their own missions in many wireless sensor network (WSN) applications. In order to support mobility of such sink groups, it is important to design a mechanism for effective discovery of the group in motion. However, earlier studies obtain group region information by periodic query. For that reason, the mechanism leads to significant signaling ove...