This book contains the proceedings of the Third International Workshop on Algorithmic Aspects of Wireless Sensor Networks. Coverage includes abstract models, complexity-theoretic results, and the design and analysis of algorithms for wireless sensor networks.

Wireless ad-hoc sensor networks have recently become a very active research subject due to their high potential of providing diverse services to numerous - portant applications, including remote monitoring and tracking in environm- tal applications and low-maintenance ambient intelligence in everyday life. The e?ective and e?cient realization of such large-scale, complex ad-hoc networking environmentsrequiresintensive,coordinatedtechnicalresearchanddevelopment e?orts,especiallyinpower-aware,scalable,robust,wirelessdistributedprotocols, due to the unusual application requirements and the severe resource constraints of the sensor devices. On the other hand, a solid foundational background seems necessary for sensor networks to achieve their full potential. It is a challenge for abstract modeling, algorithmic design and analysis to achieve provably e?cient, sc- able and fault-tolerant realizations of such huge, highly dynamic, complex, n- conventionalnetworks.Variousfeatures,includingtheextremelylargenumberof sensor devices in the network, the severe power, computing and memory limi- tions,theirdense,randomdeploymentandfrequentfailures,posenewinteresting abstract modeling, algorithmic design, analysis and implementation challenges of great practical impact. This workshop aimed to bring together research contributions related to diversealgorithmicandcomplexitytheoreticaspects ofwirelesssensornetworks. This was the third event in the series. ALGOSENSORS 2004 washeld in Turku, Finland, ALGOSENSORS 2006 was held in Venice, Italy. Since its beginning, ALGOSENSORS has been collocated with ICALP. The Third International Workshop on Algorithmic Aspects of Wireless S- sor Networks (ALGOSENSORS 2007) was organized by Wrocla w University of Technology.TheworkshopwasheldonJuly14,2007,inconjunctionwithICALP 2007. After a careful review by the Program Committee of 25 submissions, 11 regular papers were accepted to ALGOSENSORS 2007. Apart from the regular talks, two keynote speeches were given at the workshop.

Inhalt
Algorithmic Challenges for Sensor Networks Foreword to ALGOSENSORS 2007.- Topology and Routing in Sensor Networks.- Codes for Sensors: An Algorithmic Perspective.- Efficient Sensor Network Design for Continuous Monitoring of Moving Objects.- Counting Targets with Mobile Sensors in an Unknown Environment.- Asynchronous Training in Wireless Sensor Networks.- Optimal Placement of Ad-Hoc Devices Under a VCG-Style Routing Protocol.- Analysis of the Bounded-Hops Converge-Cast Distributed Protocol in Ad-Hoc Networks.- Correlation, Coding, and Cooperation in Wireless Sensor Networks.- Local Approximation Algorithms for Scheduling Problems in Sensor Networks.- Assigning Sensors to Missions with Demands.- Maximal Breach in Wireless Sensor Networks: Geometric Characterization and Algorithms.- Counting-Sort and Routing in a Single Hop Radio Network.- Intrusion Detection of Sinkhole Attacks in Wireless Sensor Networks.