Throughput Analysis of ARQ Schemes in Dialogue Communication over Half-Duplex Line

Chun-Xiang CHEN  Masaharu KOMATSU  Kozo KINOSHITA  

IEICE TRANSACTIONS on Communications   Vol.E77-B   No.4   pp.485-493
Publication Date: 1994/04/25
Online ISSN: 
Print ISSN: 0916-8516
Type of Manuscript: PAPER
Category: Communication Theory
throughput,  ARQ scheme,  half-duplex line,  dialogue communication,  

Full Text: PDF(608.1KB)>>
Buy this Article

This paper studies the performance of a dialogue communication system which consists of two stations over a half-duplex line. When a station seizes the right to send its packets, it can consecutively transmits k packets. We analyze the transmission time of a message and the throughput performances of Stop-and-Wait, Go-back-N and Selective-Repeat protocols for the half-duplex line transmission system. Based on the analytical and numerical results, we clarify the influences of the switching and the thinking times, which exist in half-duplex line system, on the throughput performance, and give the optimal k which makes the throughput to become maximum. It is observed that the throughput performances are greatly influenced not only by the switching and thinking times but also by the average message length.