September 9, 2005

HPWREN establishes research relationships with UCSD CSE/ECE faculty and graduate students

In support of managing resources in heterogeneous wireless sensor networks, HPWREN has teamed up with the UCSD Computer Science and Engineering (CSE) and Electrical and Computer Engineering (ECE) departments to create a joint research activity.

The goal of this collaboration is to design scheduling and routing algorithms capable of supporting Quality of Service (QoS) requirements for users of HPWREN. HPWREN today supports a large assortment of sensor and other user applications with varying resource needs, such as large but transient bandwidth requirements of the Palomar Observatory, low continuous bandwidth with tight real-time traffic deadlines of seismic sensor nodes, and long battery lifetime essential to small and remotely deployed weather stations, as well as other sensors. Some of the applications have stringent QoS requirements. Good examples are real-time seismic data or timely information to the emergency response personnel on spread of a large wildland fire or sending alarms on changing environmental conditions, such as wind gusts. Although in these situations the individual sensor readings may not consume much bandwidth (e.g. a single seismic sensor may rarely exceed 10kbps), the timely delivery of the data, in the midst of other data already present in the network, can be of critical importance. The results of this joint activity will research and implement strategies to ensure that high priority traffic can obtain the resources needed to traverse the network, while still being considerate of the need of lower priority data.

Poster overview of the resource management in wireless sensor networks project CSE poster

The team of collaborators currently consists of two faculty members and three students. Prof. Tajana Simunic Rosing, CSE department, is an expert in resource management of embedded wireless systems, while Prof. Tara Javidi, ECE department, has a strong background in stochastic resource allocation in wireless networks. Jaewook Shim, PhD student in ECE, is focusing on statistical analysis of data traffic on HPWREN and development of theoretical bounds on the bandwidth improvements possible when scheduling data delivery on wireless channel. Daeseob Lim, MS student in CSE, is developing a simulation environment which he will use to evaluate scheduling and routing algorithms developed by our team. Donghwan Jeong, PhD student in CSE, is currently setting up a small sensor network in our lab for testing and measurement of our scheduling and routing algorithms, and has started working on policy based routing.

Prof. Tajana Simunic Rosing, UCSD CSE

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