Performance analysis of the cumulative ARQ in IEEE 802.16 networks

Abstract

In this paper, we study the performance of the cumulative Automatic Repeat reQuest (ARQ) in IEEE 802.16 networks. An analytical model is developed to investigate some important performance metrics, such as protocol data unit (PDU) delivery delay, service data unit (SDU) delivery delay, and goodput. A general scheduling scheme and the flexible retransmission of lost PDUs are jointly considered in the analytical model, which provides a more valuable and practical guideline for the system design and performance evaluation. Extensive simulations are conducted to demonstrate the impacts of different operational parameters on the performance metrics and verify the accuracy of the analytical model.

Goodput Analysis of a Modified Cumulative ARQ

“…At first, we introduce the general cumulative ARQ mechanism which can be got in [4]. The transmission mechanism is proposed as follows.…”

“…discussed the delay and throughput of IEEE 802.16 ARQ mechanism in [3].In order to improve the channel utilization and keep the advantages of cumulative ARQ, F.Hou, etc. studied the performance of cumulative ARQ in IEEE 802.16 networks, and developed an analytical model to investigate some important performance in [4]. In this paper, we modify the transmission mechanism of cumulative ARQ and study its performance such as goodput.…”