as wireless networks with high data rate get widely deployed, improving the performance of tcp over these networks plays vital role. wireless link losses have dramatic adverse impact on tcp performance due to the difficulty in distinguishing the congestion losses from wireless link losses. we first, studied the various existing bandwidth estimation algorithms over the wireless networks. in this...

A wireless sensor network typically consists of a very large number of small, inexpensive, disposable, robust, and low-power sensor nodes working cooperatively. In this paper, we propose a routing protocol for wireless sensor networks, which focuses on satisfying QoS constraints while maximizing the lifetime of the networks. Our proposed protocol enhances the network lifetime by distributing th...

The investigators acquired laboratory equipment to establish Secure Wireless Ad-hoc Networking (SWAN) laboratory with wireless sensor and ad-hoc network capabilities consisting of laptops and MICA2 motes. We are currently working to develop efficient protocols in sensor and ad-hoc networks to address node position identification, cross-layered MAC, reliable data communication, and enhancing the...

Wireless Sensor Networks (WSNs) are defined as dynamic, self-deployed, highly constrained structured network. The WSN is a special kind of network which consists of large number of sensors and minimum one base station. Main difference between the WSN and the traditional wireless networks is that sensors are extremely sensitive to energy consumption. Energy saving and load balancing are the cruc...

This chapter reviews a number of emerging topics pertaining to a data-centric view of wireless sensor networks. These topics include data-driven routing, tracking mobile objects, constructing and maintaining reporting trees, dynamic evolution of a monitoring region for moving targets (mobicast), disseminating monitoring tasks, data gathering, receiving reports from a particular area of interest...

Wireless sensor networks have attracted much attention recently due to their various applications in many fields [...]

Advances in sensor and wireless technologies will enable thousands, or even millions of small but smart sensors to be deployed for a wide range of monitoring applications. The sensor networks must be dynamically configurable and adaptive in order to response actively to events. Security must also be built into sensor networks at the very initial design stage to prevent any potential threats. Th...

Wireless sensor networks are characterized by multihop wireless links and resource constrained nodes. In terms of data collection and forwarding scheduling, this paper investigates the load balancing in sensor nodes and wireless link based on the performance of wireless sensor networks. Leveraging the property of dissimilarity distribution, a method to quantitatively evaluate the benefits of lo...