Showing papers by "Min-You Wu published in 2005"

Terrain-constrained mobile sensor networks

Abstract: To turn an ideal mobile sensor network simulation model into reality, terrain is one of the inevitable factors we have to consider. This work is the first attempt to address this issue, by studying the behavior of mobile sensors under constraints of terrain. Specifically, we study the power consumption and the loss ratio of mobile sensors when they are moving on different terrains. These two metrics are utilized to select the best destinations, the best paths to the destinations, and match these destinations with mobile sensors.

ACOS: a precise energy-aware coverage control protocol for wireless sensor networks

Abstract: A surveillance application requires sufficient coverage of the protected region while minimizing the energy consumption and extending the lifetime of sensor networks This can be achieved by putting redundant sensor nodes to sleep In this paper, we propose a precise and energy-aware coverage control protocol, named Area-based Collaborative Sleeping (ACOS) The ACOS protocol, based on the net sensing area of a sensor, controls the mode of sensors to maximize the coverage, minimize the energy consumption, and to extend the lifetime of the sensor network The simulation shows that our protocol has better coverage of the surveillance area while waking fewer sensors than other state-of-the-art sleeping protocols

InterSensorNet: strategic routing and aggregation

Abstract: Sensor networks are expected to find widespread use in a variety of applications. In the near future, more and more sensor networks will be deployed for multiple services in a surrounding area. Different sensor networks may overlap or partially overlap with each other, and may interfere with each other. However, it also provides an opportunity to construct a low energy, high connectivity, and more robust sensor network. We propose an InterSensorNet scheme, which is a federation of multiple sensor networks. The success of the InterSensorNet depends on whether a node is willing to cooperate with nodes in a foreign network. What will be the incentive to do so? With concepts from economics and game theory, we propose a mechanism design (MD) approach to handle the strategic agents that respond to incentives. We apply MD to two practical setting of multiple sensor networks and study applications of InterSensorNet mechanism design.

Approaches to establishing multicast overlays

Abstract: In the past a few years, provision of an Internet-scale multicast with the use of application-level routing components has generated a lots of interests both within the research community and in the commercial world. Overlay multicast is a concept representing such multicast scheme. Overlay multicast offers accelerated deployment, simplified configuration, and better access control. In this paper we present an overview of the existing overlay multicast solutions and classify them according to different criteria. Also we compared the performance between topology-independent and topology-aware end-system multicast and performance difference of topology-aware end-system multicast and proxy-based multicast.

A Semantic-based architecture for sensor networks

Abstract: With rapid development of sensor networks technology, it becomes feasible to deploy multiple sensor networks in relevant area to collect interested information. Sensor nodes that are co-located but belong to different sensor networks may not be able to collaborate properly to gain the capacity or performance. In this paper we propose a semantic-based sensor networks architecture that enables inter-networking of sensor networks. In this Semantic Sensor Net (Ssn), a semantic tag is attached to the sensory data so that the sensor networks are able to exchange information and work collaboratively. The process of semantic creation and maintenance is described. We also introduce the concept of InterSensorNet. This infrastructure enables efficient information exchange and information extraction among multiple sensor networks.

ShanghaiGrid as an information service grid: an overview

Abstract: The goal of the ShanghaiGrid is to provide information services to the people. It aims to construct a metropolitan-area information service infrastructure and establish an open standard for widespread upper-layer applications from both communities and the government. This paper introduces the Information Service Grid Toolkit in detail.

ShanghaiGrid: a grid prototype for metropolis information services

Abstract: The goal of ShanghaiGrid is providing information services to the people. It aims at constructing a metropolitan-area information service infrastructure and establishing an open standard for widespread upper-layer applications from both communities and the government. A typical application named as Traffic Information Grid is discussed in detail.