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The Computer Journal Advance Access originally published online on October 14, 2008
The Computer Journal 2009 52(8):851-860; doi:10.1093/comjnl/bxn050
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© The Author 2008. Published by Oxford University Press on behalf of The British Computer Society. All rights reserved. For Permissions, please email: journals.permissions@oxfordjournals.org

This article appears in the following The Computer Journal issue: Incorporating Systems, communications and services in smart homes and Software engineering for e-business Special Issues [View the issue table of contents]

Increasing Service Availability in a Wireless Home Network Environment

Chi-Yi Lin1, Szu-Chi Wang2, Sy-Yen Kuo3,* and Chi-Yuan Chen4

1 Department of Computer Science and Information Engineering, Tamkang University, Taipei, Taiwan, Republic of China
2 Graduate Institute of Computer Science and Information Engineering, National I-Lan University, Yilan, Taiwan, Republic of China
3 Department of Computer Science and Information Engineering, National Taiwan University of Science and Technology, Taipei, Taiwan, Republic of China
4 Department of Electrical Engineering, National Taiwan University, Taipei, Taiwan, Republic of China

* Corresponding author: sykuo{at}mail.ntust.edu.tw

Received 9 February 2008; revised 3 July 2008

Service-oriented architecture (SOA) paradigm is an inspiring and evolving concept in the context of IT and business services. Recently, various networked embedded systems are penetrating into our life; the unique characteristics of these systems pose many technological challenges. Specifically, the capabilities to interoperate across home appliances and personal digital devices are critical in a smart home environment. As a consequence, the SOA paradigm is introduced as a basis to enhance the service interoperability. However, the service availability is another important concern. In this paper, we focus on augmenting the smart home environment with high service availability. First, we point out the potential problems by adopting the universal plug and play (UPnP) quality of service (QoS) architecture to deliver services with QoS requirements in wireless home networks. After that, we propose a local detour mechanism to tolerate link congestions and node/link failures. Furthermore, the proposed mechanism is based on standard UPnP actions, so that modifications to the existing UPnP QoS architecture are not required. Compared with content-adaptive and resource-adaptive-based approaches operated on fixed service routing paths, our work not only guarantees content quality, but also tolerates topology changes in wireless home networks.

Key Words: service availability • service-oriented architecture • universal plug and play • backup routing • wireless home network


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