DYNAMIC-THRESHOLD-LIMITED TIMED-TOKEN (DTLTT) PROTOCOL

C Kalu; S Ozumba; GN Onoh

doi:10.4314/njt.321.606

DYNAMIC-THRESHOLD-LIMITED TIMED-TOKEN (DTLTT) PROTOCOL

Authors

C Kalu Department of Electrical/Electronic & Computer Engineering, University of Uyo, Akwa Ibom State, Nigeria.
S Ozumba Department of Electrical/Electronic & Computer Engineering, University of Uyo, Akwa Ibom State, Nigeria.
GN Onoh Dept. of Electrical/Electronic Engineering, Enugu State University of Science and Technology Owerri, Nigeria

DOI:

https://doi.org/10.4314/njt.321.606

Keywords:

Multi-access, Multiservice, Network, Synchronous, Asynchronous, Traffic, Timed-Token.

Abstract

An improved version of the Static-Threshold-Limited On-Demand Guaranteed Service Timed-Token (STOGSTT) Media Access Control (MAC) protocol for channel capacity allocation to the asynchronous traffic in Multiservice Local Area Network (MLANs) was developed and analyzed. STLODGSTT protocol uses static value of threshold bandwidth to allocate available bandwidth to the asynchronous traffic, as such, the throughput of STLODGSTT protocol drops significantly under non-uniform heavy load of asynchronous traffic. The DTLTT protocol dynamically adjusts the threshold bandwidth in response to the variations in the load distribution of the asynchronous traffic. In view of this dynamic mechanism, under various load distributions of the asynchronous traffic, the DTLTT protocol maintains higher throughput than the STLODGSTT protocol. The improvement is demonstrated through analytical computations and simulation results

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Issue

Vol. 32 No. 1 (2013)

Section

Research papers of General Interest

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