A new model for context-aware transactions in mobile services |
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Authors: | Muhammad Younas Soraya Kouadri Mostéfaoui |
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Affiliation: | (1) Department of Computing and Electronics, Oxford Brookes University, Oxford, UK;(2) Department of Communication and Systems, The Open University, Milton Keynes, UK |
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Abstract: | With the ubiquity of handheld devices (such as smart phones and PDAs) and the availability of a wide range of mobile services
(such as mobile banking, road traffic updates, and weather forecast), people can nowadays access information and conduct online
transactions virtually anywhere and anytime. In such flexible, dynamic but less reliable environment, transaction management
technology is believed to provide service reliability and data consistency. Indeed, in mobile and ubiquitous environments
where devices as well as services can seamlessly join and leave the ubiquitous network; transaction management can be very
helpful during the recovery of services from failure. Current transaction models and commit protocols do not take into account
context information. However, in mobile environments, it is imperative to consider context information in the commit of a
transaction—i.e., a transaction can be successfully completed if it meets the required context. In this paper, we propose
a new model for context-aware transactions and their performance management in mobile environments. Unlike conventional transactions,
context-aware transactions adapt to the required context. By context, we mean the service’s context as well as the users’
context that includes users’ needs and preferences. This paper designs and develops the proposed transaction model and evaluates
its performance in terms of time and message complexities as well as transaction’s throughput. |
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