tailieunhanh - Báo cáo hóa học: " A Survey of Application Distribution in Wireless Sensor Networks"

Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: A Survey of Application Distribution in Wireless Sensor Networks | EURASIP Journal on Wireless Communications and Networking 2005 5 774-788 2005 Mauri Kuorilehto et al. A Survey of Application Distribution in Wireless Sensor Networks Mauri Kuorilehto Institute of Digital and Computer Systems Tampere University of Technology P. O. Box 553 33101 Tampere Finland Email Marko Hannikainen Institute of Digital and Computer Systems Tampere University of Technology P. O. Box 553 33101 Tampere Finland Email Timo D. Hamalainen Institute of Digital and Computer Systems Tampere University of Technology P. O. Box 553 33101 Tampere Finland Email Received 14 June 2004 Revised 23 March 2005 Wireless sensor networks WSNs are deployed to an area of interest to sense phenomena process sensed data and take actions accordingly. Due to the limited WSN node resources distributed processing is required for completing application tasks. Proposals implementing distribution services for WSNs are evolving on different levels of generality. In this paper these solutions are reviewed in order to determine the current status. According to the review existing distribution technologies for computer networks are not applicable for WSNs. Operating systems OSs and middleware architectures for WSNs implement separate services for distribution within the existing constraints but an approach providing a complete distributed environment for applications is absent. In order to implement an efficient and adaptive environment a middleware should be tightly integrated in the underlying OS. We recommend a framework in which a middleware distributes the application processing to a WSN so that the application lifetime is maximized. OS implements services for application tasks and information gathering as well as control interfaces for the middleware. Keywords and phrases ad hoc networking distribution service discovery task allocation wireless sensor networks. 1. INTRODUCTION Wireless sensor networks WSNs

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