Open AccessWORK DONE ON MIDDLEWARE INFRASTRUCTURE FOR PREDICATE DETECTION
Author(s) -
Nagma Fatima,
Sumit Sharma,
Shipra Srivastava
Publication year - 2017
Publication title -
international journal of computer and communication technology
Language(s) - English
Resource type - Journals
eISSN - 2231-0371
pISSN - 0975-7449
DOI - 10.47893/ijcct.2017.1403
Subject(s) - asynchronous communication , computer science , middleware (distributed applications) , distributed computing , context awareness , predicate (mathematical logic) , context (archaeology) , context model , computer network , artificial intelligence , programming language , object (grammar) , linguistics , philosophy , paleontology , phone , biology
Context-awareness is an essential feature of pervasive applications, and runtime detection of contextual properties is one of the primary approaches to enabling context awareness. However, existing context-aware middleware does not provide sufficient support for detection of contextual properties in asynchronous environments. The contextual activities usually involve multiple context collecting devices, which are fully-decentralized and interact in an asynchronous manner. However, existing context consistency checking schemes do not work in asynchronous environments, since they implicitly assume the availability of a global clock or relay on synchronized interactions. To this end, we present the Middleware Infrastructure for Predicate detection in Asynchronous environments (MIPA), which supports context awareness based on logical time. Design and Structure of MIPA are explained in detail.