Towards pervasive instant messaging and presence awareness

Abstract

Abstract-This work envisions the benefits of applying the Instant Messaging (IM) paradigm in pervasive computing environments. With IM in such an environment, all smart entities, human or not, can interact using IM as the unified interface. To realize this vision, the design of a Smart Instant Messaging (SIM) system is proposed, which features context-aware presence management, user-centric resource configuration, and adaptive grouping. This system extends the Jabber-based IM framework and relies on an ontology-based supporting middleware to handle the chore of retrieving and interpreting contextual information. Three prototype versions of a client have been implemented and their performance in terms of memory usage and response time is evaluated.

Context-Aware Instant Messenger with Integrated Scheduling Planner

“…Both of these applications concern more on the presence awareness context, rather than any context-aware concept. Most probably because this is the feature that differentiates it from other communication means such as email or telephone [12].…”

“…Begole et al state that there is a need for mechanisms to help understand not only whether an intended recipient is reachable but also how receptive she is to being called [15]. Lilsys includes a motion sensor which is combined with speech and device activity to detect a person's presence [12].…”

“…If a user is not actively using any device, an indication of how long since the most recent activity is given in parentheses (e.g. computer idle time or when a cell phone was last used) [12].…”

SIPmsign: a lightweight mobile signature service based on the Session Initiation Protocol

“…In fact, our proposal could be included in SIP as an added‐value extension. Furthermore, thanks to SIP and its instant messaging (IM) and presence capabilities, it could behave as a unified interface and be used in pervasive environments .…”

“…In fact, our proposal could be included in SIP as an added-value extension. Furthermore, thanks to SIP and its instant messaging (IM) and presence capabilities, it could behave as a unified interface and be used in pervasive environments [24].Compared with previous work, the main contribution of our proposal is the reduction in the number of messages and cryptographic operations needed to carry out a mobile signature process.…”