期刊名称：Journal of Theoretical and Applied Information Technology
印刷版ISSN：1992-8645
电子版ISSN：1817-3195
出版年度：2020
卷号：98
期号：23
页码：3867-3878
出版社：Journal of Theoretical and Applied
摘要：In the current context of ubiquitous computing, the contribution of ad hoc networks is strongly awaited. To enable these networks to play their full role, research is being actively carried on improving their Quality of Service (QoS). We focus on an improvement that considers link quality in route choice. In this paper, we analyze effectiveness of usual metrics and QoS methods used to improve routing in ad hoc network when considering the erroneous nature of radio links. We are particularly interested in costs of estimating the quality of the links, accuracy of measured value, relevance of the metric contribution in the choice of better paths. We carry out a detailed study on the metrics Hop count, Expected Transmission Count (ETX), Bit Error Rate (BER), number of Packet Retransmissions (PR), Delay and their derivatives. To test the efficiency of these metrics and compare their efficacy, we have implemented them into the well-known Optimized Link State Routing protocol. Realistic simulation results show that number of retransmissions-based metric outperforms traditional metrics based on delay, BER or Expected Transmission Count.
关键词：Wireless Networks;Routing Metrics;Number Of Retransmissions-Based Metric;Qos Routing Protocols Efficiency;Olsr Protocol
