Average Packet Error Rate Research Articles

Traffic characteristics of Go‐back‐N ARQ scheme with selective repeat in intra‐block

AbstractThis paper discusses the traffic characteristics of the Go‐back‐N (GBN)_SR scheme, in which the receiver returns the acknowledge signal blockwise and selective repeat is performed within the retransmission block. First the strict expression for the throughput and the strict expression for the average transmission delay of the blockwise bulk arrival model are derived. Then, the throughput of the GBN_SR scheme and the average transmission delay of the blockwise bulk arrival model are examined by numerical calculation. The average transmission delay of the packetwise bulk arrival model is investigated by simulation. It is shown that the throughput is improved with increasing block size, and that the average transmission delay can be minimized by using the optimal block size, depending on the average packet error rate and the block arrival rate. It is also shown for the packetwise bulk arrival model that there exists a block size which minimizes the average transmission delay, and that the minimum average transmission delay is smaller than in the blockwise bulk arrival model. © 2002 Wiley Periodicals, Inc. Electron Comm Jpn Pt 1, 86(3): 9–16, 2003; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/ ecja.10052