PSC-RM: Reference Model for Pervasive Service Composition

Abstract

Pervasive Service Composition (PSC) incorporates service composition and pervasive computing into managing user's everyday activities. A generic Reference Model of Pervasive Service Composition (PSC-RM) is needed for guiding PSC architecture design and implementation. To design PSC-RM, we first investigate and present a user's generic activity model. Then we analyze characteristics of PSC and envision PSC applications. Based on these applications we present requirements and initial design of PSC-RM.

Context-Aware Pervasive Service Composition

“…In the user generic activity model [18], we determine that each task occurs and ends in an interaction session (namely task session) between the user and the service world (namely his/her surroundings). A task session includes two major phases: peer coordination and service collaboration.…”

“…Context-Aware Pervasive Service Composition enables a pervasive system to provide service compositions that are relevant in the network context, device context, and user context to users. Moreover, such composition enables applications that are flexible and adaptive to changes [1].…”

“…An entity is a person, place, or object that is considered relevant to the interaction between a user and an application, including the user and applications themselves [3]. 1 http://www.mediateam.oulu.fi/projects/psc/?lang=en A large amount of research for context-aware computing has been reported since the early 1990s. Want et al [4] describe a Badge Location System that transmits signals providing information about badges' location to a centralized location service through a network of sensors.…”

Ontology-Driven Pervasive Service Composition for Everyday Life

“…Our previous work examined scenarios created in context of pervasive computing for envisioning future human everyday life and studied a generic user's activity model [40] [41]. This section analyzes requirements for Ontology-Driven Pervasive Service Composition.…”

“…Those two processes are termed in the model as peer coordination and service collaboration. Pervasive Service Composition aims to accommodate peer coordination and service coordination in a pervasive computing environment [40][41].…”