Lance Doherty

Learn More
We propose a distributed on-demand power-management protocol for collecting data in sensor networks. The protocol aims to reduce power consumption while supporting fluctuating demand in the network and provide local routing information and synchronicity without global control. Energy savings are achieved by powering down nodes during idle times identified(More)
Channel-specific path data for a 44-node 2.4 GHz wireless sensor network deployed in an industrial setting is presented. Each node generates one data packet every 28 seconds with the number of transmissions, received acknowledgements, average RSSI, and other metrics for a path to a single neighbor on a single channel for every 15 minutes of operation.(More)
Smart Mesh IP is the latest protocol stack from the Linear Technology's Dust Networks group, who specialize in standards-based intelligent wireless sensor networking solutions. This paper presents a technical overview of this protocol stack, the System-on-Chip built around it, and the "ecosystem" to integrate a low-power mesh network in a larger system and(More)
In a Wireless Sensor Network (WSN) accurate location of target node is highly desirable as it has strong impact on overall performance of the WSN. This paper proposes the application of different migration variants of Biogeography-Based Optimization (BBO) algorithm and Particle Swarm Optimization (PSO) for distributed optimal localization of randomly(More)
Networks of hundreds or thousands of sensor nodes equipped with sensing, computing and communication ability are conceivable with recent technological advancement. Methods are presented in this report to recover and visualize data from wireless sensor networks, as well as to estimate node positions. A communication system is assumed wherein information from(More)
Time Synchronized Channel Hopping (TSCH) is a technique that enables ultra reliable and ultra low-power wireless multi-hop networks, and in which communication is orchestrated by a schedule. When building that schedule, one can cleanly trade off between latency, power consumption, throughput, and reliability. TSCH technology is commonplace in industrial(More)