Abstract
Medium access techniques for very high-speed multiaccess networks (1 Gbit/s and more) are actively studied in various laboratories and standards bodies. The compatibility with the ATM technique is now required for a future homogeneity with MANs and WANs. By analysing the main ATM LANs described in the literature, this paper compares the performance of several MAC schemes. We have selected the Orwell ring with a MAC based on a slotted ring approach and a cyclic reset control mechanism. The ATMRing MAC protocol is an enhancement of the Orwell network through a new reset scheme which can achieve a less important reset overhead than Orwell. Quite different from the Orwell and ATMR networks, both DQDB and ATMi (ATM Interface) use a hybrid MAC scheme to support different classes of service, i.e., the bandwidth is divided into channels: one for the isochronous traffic and the other for the asynchronous traffic. The two sub-channels are multiplexed into the frame and may be distinguished by a special bit situated in the header of the slot. ATMi is an enhancement of RRMA (Reserved/Random Multiple Access) and DQDB-REB (DQDB with Request Balancing). ATMi supports two access modes to handle several classes of service. First mode corresponds to leased cells, based on the RRMA mechanism and the second mode provides requested cells, based on the DQDB-REB options.
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© 1995 Springer Science+Business Media Dordrecht
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Pujolle, G., Jiang, S.M., Sun, Q. (1995). ATM LANs : New Trends and Performance Comparison. In: Hasegawa, T., Pujolle, G., Takagi, H., Takahashi, Y. (eds) Local and Metropolitan Communication Systems. IFIP — The International Federation for Information Processing. Springer, Boston, MA. https://doi.org/10.1007/978-0-387-34884-1_15
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DOI: https://doi.org/10.1007/978-0-387-34884-1_15
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