Pervasive computing based web services

Type :

Term papers

Pages :

5 pages

Format :

.pdf

Published date :

09/20/2009

Category :

Science & technology

Sub category :

Computer science

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Summary :

Abstract
Introduction
Pervasive computing
Service invocation
Web services for service invocation
Service roaming
1. Physical-layer roaming
2. Network-layer roaming
3. Session-layer roaming
4. Application-layer roaming
Proxy
Session
Web services
Service roaming usage in the implementation model
System architecture for service roaming
Layered architecture
1. Presentation layer
2. Content layer
3. Application layer
4. Back-end data and services layer
5. m-Roam architecture
Service-invocation framework
Distributed directory of services
Conclusion
Bibliography

Abstract

pervasive computing aims to insulate the user; the complexities and problems associated with a mobile-wireless environment. The emerging wireless communication protocols aim to disassociate computing platforms from the location and the medium the user is accessing services. A user should be able to access his/her personalized services anytime, anywhere, on any type of device and with any type of wireless technology in a non-obtrusive environment. The web services are used to achieve these objectives. Specifically, web services Description Language (WSDL) and Universal Description, Discovery and Integration (UDDI) are used for service advertisement and registration, UDDI is used for service discovery, and Simple Object Access Protocol (SOAP) is used for service execution. In order to determine the particular services that a user is accessing and maintain information related to the task that the user is performing a state ful protocol is required.