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RCRT: Rate-controlled reliable transport protocol for wireless sensor networks
Jeongyeup Paek, Ramesh Govindan
Article No.: 20
Emerging high-rate applications (imaging, structural monitoring, acoustic localization) will need to transport large volumes of data concurrently from several sensors. These applications are also loss-intolerant. A key requirement for such...
Identification of low-level point radioactive sources using a sensor network
Jren-Chit Chin, Nageswara S. V. Rao, David K. Y. Yau, Mallikarjun Shankar, Yong Yang, Jennifer C. Hou, Srinivasagopalan Srivathsan, Sitharama Iyengar
Article No.: 21
Identification of a low-level point radioactive source amidst background radiation is achieved by a network of radiation sensors using a two-step approach. Based on measurements from three or more sensors, a geometric difference triangulation...
Obstacle discovery in distributed actuator and sensor networks
Rong Zheng, Khuong Vu, Amit Pendharkar, Gangbing Song
Article No.: 22
Distributed active sensing is a new sensing paradigm, where active sensors (aka actuators) as illuminating sources and passive sensors as receivers are distributed in a field, and collaboratively detect events of interest. In this paper, we study...
Approximation algorithms for computing minimum exposure paths in a sensor field
Hristo N. Djidjev
Article No.: 23
The exposure of a path p in a sensor field is a measure of the likelihood that an object traveling along p is detected by at least one sensor from a network of sensors, and is formally defined as an integral over all points x...
On the interaction of clocks, power, and synchronization in duty-cycled embedded sensor nodes
Thomas Schmid, Roy Shea, Zainul Charbiwala, Jonathan Friedman, Mani B. Srivastava, Young H. Cho
Article No.: 24
The efficiency of the time synchronization service in wireless sensor networks is tightly connected to the design of the radio, the quality of the clocking hardware, and the synchronization algorithm employed. While improvements can be made on all...
Localized spanner construction for ad hoc networks with variable transmission range
David Peleg, Liam Roditty
Article No.: 25
This article presents an algorithm for constructing a spanner for ad hoc networks whose nodes have variable transmission range. Almost all previous spanner constructions for ad hoc networks assumed that all nodes in the network have the...
Analysis of power-aware buffering schemes in wireless sensor networks
Yibei Ling, Chung-Min Chen, Shigang Chen
Article No.: 26
We study the power-aware buffering problem in battery-powered sensor networks, focusing on the fixed-size and fixed-interval buffering schemes. The main motivation is to address the yet poorly understood size variation-induced effect on...
As the number of applications of sensor networks increases, so does the interest in sensor network localization, that is, in recovering the correct position of each node in a network of sensors from partial connectivity information such as...