We were motivated to set forth a forum for researchers and practitioners to exchange ideas in development of sensor networks and their applications. The Fourth International Workshop on Sensor Networks (SN 2011) will be held in conjunction with the IEEE 31st International Conference on Distributed Computing System (ICDCS 2011).

The workshop welcomes researchers, practitioners, and students to join us in the workshop. The areas of interests include but are not limited to the following:

* Mobile sensing
* Participatory sensing
* Sensing in Cyber-Physical Systems
* Media access control
* Topology discovery and management
* Localization
* Routing
* Network and battery lifetime
* Network coverage and connectivity
* Network scalability
* Security and privacy
* Quality of service
* Mobility management
* Self-organization
* Robustness, faculty-tolerance, self-healing, and reliability
* Two-dimensional and three-dimensional sensor deployment
* Integration of wireless sensor networks and the Internet
* Modeling and simulation
* Sensor network testbed design and development
* Data transportation, aggregation, and visualization
* Network monitoring
* MAC, PHY, routing, and applications of Underwater/Acoustic sensor networks
* MAC, PHY, routing, and applications of Body sensor networks

Highlights:

* The proceedings of the workshop will be published by IEEE CS Press, included in the IEEE Xplore digital library, and indexed by the EI.
* Extended versions of selected best papers will be recommended for possible publication in the International Journal of Sensor Networks (IJSNet) (SCI-indexed)