Reservation arbitrated access for statistical multiplexing voice traffic over dual-bus metropolitan area networks

TitleReservation arbitrated access for statistical multiplexing voice traffic over dual-bus metropolitan area networks
Publication TypeJournal Article
Year of Publication1999
AuthorsChan, H. C. B., and V. C. M. Leung
JournalSelected Areas in Communications, IEEE Journal on
Pagination42 -50
Date Publishedjan.
Keywordsaccess protocols, analytical model, asynchronous transfer mode, ATM/MAN-based broadband networks, broadband multiplexers, broadband networks, business communication, channel utilization, computer simulations, cyclic capturing mechanism, data communication, dual-bus metropolitan area networks, enterprise networking, IEEE 802.6 protocol, isochronous voice channels, isochronous voice transport, metropolitan area networks, performance analysis, personal communication networks, prearbitrated access, quality of service, real voice signal, reservation arbitrated access protocol, simulation results, SMDS networks, statistical multiplexing, switched multimegabit data service, telecommunication standards, telecommunication traffic, voice calls, voice communication, voice quality, voice reservation protocols, voice traffic, wireless personal communication systems

Metropolitan area networks (MANs) are well suited to serve as broadband multiplexers for asynchronous transfer mode (ATM) networks, to facilitate enterprise networking and to support future wireless personal communication systems. We propose and analyze a novel reservation arbitrated (RA) access method which provides isochronous voice transport over dual-bus MANs while enabling statistical multiplexing among voice calls. In combination with a new cyclic capturing (CC) mechanism, RA access allows stations to capture and reserve isochronous voice channels in a fair and distributive manner. This paper presents the RA access protocol, derives an analytical model for general waste-free voice reservation protocols, and analyzes the performance of RA access by computer simulations validated by analytical calculations. To assess the actual voice quality, simulation results based on a real voice signal are also presented. Results indicate that RA access offers significant improvements in channel utilization, as compared to prearbitrated (PA) access, while providing an acceptable quality of service. Therefore, RA access offers an efficient voice transport mechanism for existing switched multimegabit data service (SMDS) networks employing the IEEE 802.6 protocol, as well as emerging ATM/MAN-based broadband networks


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