Context-Aware Construction of Ubiquitous Services

Tomoko ITAO  Tetsuya NAKAMURA  Masato MATSUO  Tomonori AOYAMA  

IEICE TRANSACTIONS on Communications   Vol.E84-B    No.12    pp.3181-3188
Publication Date: 2001/12/01
Online ISSN: 
Print ISSN: 0916-8516
Type of Manuscript: Special Section PAPER (Special Issue on Network Software)
Category: Mobile Service and Technologies
service construction,  context-aware,  ubiquitous,  network resource,  alternative service,  

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DANSE (Dynamically Adaptive Networking Service Environment) is a new architecture for adaptive network service systems. In this paper, a framework for context-aware service construction based on DANSE architecture is presented. In DANSE, any hardware, software, information, and services that are available on a network are treated as network resources. DANSE coordinates the construction of an end user's service based on the user's requests and situation or context (i.e., user's location, schedule, co-workers, etc.). To provide users with satisfactory services, it monitors user context continuously and searches for network resources that are convenient for a target user. Moreover, it detects changes in user context and invokes service construction if needed. If the desired service is not available, alternative services are automatically constructed. With those capabilities, DANSE enables ubiquitous provision of services any time, anywhere.