A note on dependable real-time communication in multihop networks

Authors:
S Raghavan;G Manimaran;C Siva Ram Murthy
Affiliations:
Department of Computer Science, Stanford University, Stanford, CA 94305, USA;Department of Electrical and Computer Engineering, Iowa State University, Ames, IA 50011, USA;Department of Computer Science and Engineering, Indian Institute of Technology, Madras 600 036, India
Venue:
Computer Communications
Year:
2002

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Abstract

The issue of providing fault-tolerance in real-time communication has been a problem of growing importance. There are two basic approaches for satisfying fault-tolerant requirements in real-time communication: (i) forward error recovery approach and (ii) detect and recovery approach. The first approach is well-suited for hard real-time communication, whereas the second approach is well-suited for soft real-time communication. Neither of these basic approaches is well-suited for supporting both hard and soft real-time communication. In this paper, we propose an integrated scheme that not only supports such a mixed communication requirements, but also improves the call acceptance rate significantly due to its efficient resource allocation mechanisms such as traffic dispersion and backup multiplexing. The effectiveness of the proposed scheme has been evaluated through extensive simulation studies.