Research: SBP-Net: an integrated voice/data token ring LAN

Authors:
S Bolis;Eg Economou;D Mouzakis;G Philokyprou
Affiliations:
Department of Informatics, University of Athens, Panepistimiopolis, TYPA Building, 157 71 Athens, Greece;Department of Informatics, University of Athens, Panepistimiopolis, TYPA Building, 157 71 Athens, Greece;Digital Equipment Hellas SA, 32 Kifissias Ave, GR 151 25 Maroussi, Athens, Greece;Department of Informatics, University of Athens, Panepistimiopolis, TYPA Building, 157 71 Athens, Greece
Venue:
Computer Communications
Year:
1993

Citing 4
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Abstract

This paper presents a modified token ring LAN, called the Scheduling Bypass Periods Network (SBP-Net). SBP-Net uses the ring to implement the IEEE 802.5 standard token ring functions and an auxiliary bus for control purposes. In our proposal idle stations are bypassed, therefore the relevant delay produced in the standard token ring is minimized. This improvement is particularly significant at light and medium loads, and makes the proposed LAN suitable for voice applications. An access protocol for integration of voice and data is also described which meets the delay constraints of voice traffic while guaranteeing a minimum bandwidth requirement for data traffic. The performance of the SBP-Net is evaluated via simulation tools. Results obtained show significant improvement of delay-throughput characteristics compared with those of the token ring.