Reservation arbitrated access for efficient service integration over dual-bus metropolitan area networks

TitleReservation arbitrated access for efficient service integration over dual-bus metropolitan area networks
Publication TypeJournal Article
Year of Publication1998
AuthorsChan, H. C. B., and V. C. M. Leung
JournalCommunications, IEE Proceedings-
Pagination347 -354
Date Publishedoct.
Keywordsaccess protocols, approximation theory, asynchronous transfer mode, B-ISDN, bandwidth utilisation, bandwidth-on-demand, broadband integrated services digital networks, broadband network access, business communication, city area, corporate/public networks, distributed broadband multiplexers, dual-bus metropolitan area networks, integrated voice/data communication, isochronous channels reservation, MAN, metropolitan area networks, multimedia communication, multimedia terminals, network interconnection, network topology, nontime-sensitive traffic, performance evaluation, queue-arbitrated access, reservation arbitrated access, reservation-arbitrated access protocol, residual bandwidth, service integration, statistical multiplexing, system buses, telecommunication traffic, time-sensitive traffic, variable bit-rate isochronous traffic, video, voice

Dual-bus metropolitan area networks (MANs) are well suited to provide broadband network access and network interconnection over a city area by functioning as distributed broadband multiplexers between existing corporate/public networks, multimedia terminals, and broadband integrated services digital networks employing an asynchronous transfer mode. The authors address the important problem of integrating time-sensitive and non-time-sensitive traffic over MANs. In the proposed integration scheme, time-sensitive variable bit-rate isochronous (VERI) traffic, such as voice and video, is statistically multiplexed over the MAN by a novel, reservation-arbitrated (RA) access protocol, while non-time-sensitive asynchronous traffic, such as data, is transported over the residual bandwidth by queue-arbitrated access. RA access allows a VERI traffic source to capture and reserve some isochronous channels on a bandwidth-on-demand basis, Compared to previously proposed reservation protocols, RA access is fair, provides a better isochronous transport service, and is compatible to the slot format of the existing IEEE 802.6 MAN standard. The system performance is analysed by an approximate theoretical model and computer simulations. Results indicate that the proposed integration scheme can be engineered to meet the stringent quality of service requirements of the time-sensitive VERI traffic, while providing a satisfactory service to the non-time-sensitive data traffic and ensuring efficient bandwidth utilisation


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