Wireless sensors are employed in a wide range of applications. One common feature of most sensor settings is the need to communicate sensed data to some collection point or sink. This communication can be direct (to a mobile collector) or indirect – via other sensors towards a remote sink. In either case, a sensor might not be able to communicate to a sink at will. Instead it collects data and ...

A SEA Swarm (Sensor Equipped Aquatic Swarm) moves as a group with water current and enables 4D (space and time) monitoring of local underwater events such as contaminants and intruders. For prompt alert reporting, mobile sensors forward events to mobile sinks (i.e., autonomous underwater vehicles), thus requiring an efficient routing mechanism. In this paper, we analyze various design choices t...

A primary task in wireless sensor networks (WSNs) is data collection. The main objective of this task is to collect sensor readings from sensor fields at predetermined sinks using routing protocols without conducting network processing at intermediate nodes, which have been proved as being inefficient in many research studies using a static sink. The major drawback is that sensor nodes near a d...

-The approach of using mobile sink has been adopted in ad hoc networks to achieve higher efficiency in terms of gathering data from sensors. Mobility-assisted data collection brings in new opportunities to improve the energy efficiency nodes. However, mobile sink also introduces new challenges such as routing the mobile network. A lot of research efforts have been devoted to reduce this latency...

The sensors nearby the static sink drains their energy resources rapidly, since they continuously involve to build routes in Wireless sensor networks, which are between data sources and sink. Hence, having limited lifespan, axing network lifetime.The mobile-sink strategy that allows move around area distribute transmission overhead multiple nodes. However, is often tall ordered practice due con...

Wireless Sensor Networks are made up of small sensor nodes with sensing capability. These sensor nodes have limited power supply, computational capability and storage. Due to constrained energy source in wireless sensor nodes, the design and implementation of energy efficient protocols is one of the most important challenge in Wireless Sensor Networks. Mobility of sink in wireless sensor networ...

The Sinks are vivacious in many wireless sensor network (WSN) solicitations for competent data accumulation, confined sensor reprogramming, and for extricating and revoking conceded sensors. However, in sensor networks that make use of the temporal key dissemination schemes for pairwise key naissance and endorsement between sensor nodes and mobile sinks, the engross of mobile sinks for data ass...

Wireless sensor networks consist of many sensor nodes installed in an area. One of the major problems in WSN is energy efficiency. Many studies have revealed that Mobile sink can be used to reduce the energy consumption in nodes and to prevent the formation of energy holes in Wireless Sensor Networks. The existing uses a hybrid moving pattern where the mobile sink visits only the rendezvous poi...

of dissertation Presented to the Graduate School of the University of Florida in Partial Fulfillment of the Requirements for the Degree of Doctor of Philosophy THE RESEARCH ON EXTENDING THE LIFETIME OF WIRELESS SENSOR NETWORKS By YoungSang Yun August 2010 Chair: Ye Xia Major: Computer Engineering We study various problems efficient energy management for wireless sensor networks. First, we resea...