Simon Tsang

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This paper investigates the Feature Interaction problem, known from traditional telephony environments, in the context of internet appliances. The results are threefold. The first part of this paper introduces a service taxonomy supported by a list of example services. The second part discusses feature interactions between services for appliances. A(More)
A platform to support the development of experimental call models is presented. The platform, known as DESK, has been created specifically to aid the testing of novel Feature Interaction Detection and Resolution techniques. The paper presents an overview of DESK before going on to consider the detail of its implementation and the communication between its(More)
This document proposes the use of SIP for Network-capable appliances. It leverages standard SIP capabilities to directly communicate with appliances even when they are behind firewalls, NATs or other entities that prevent direct end-to-end communication. When combined with the recently proposed Instant Messaging and Presence SIP extensions these techniques(More)
We consider the problem of modeling and designing publish/subscribe protocols that safeguard the privacy of clients' subscriptions and of servers' publications while guaranteeing efficient latency in challenging scenarios (i.e., real-time publication, high data arrival rate, etc.). As general solutions from the theory of secure function evaluation protocols(More)
We consider the problem of modeling and designing efficient and privacy-preserving publish/subscribe protocols in a distributed model where parties can act as publishers or subscribers or both, and there are no brokers or other types of parties. The problem is particularly challenging as privacy demands on such protocols come with efficiency limitations;(More)