Abstract
In this paper, the authors propose a novel real-time study metrics of Round Trip Time (RTT) for Multi-Hop Wireless Mesh Networks. They focus on real operational wireless networks with fixed nodes, such as industrial wireless networks. The main aim of the metric is to show the effect of the Downlink and Uplink message size (DMS and UMS) on RTT with and without Forward Error Correction (FEC), user data size without any headers, on RTT path between a source (Supervisory Control and Data Acquisition (SCADA) center) and a destination RTU (Remote Terminal Units). The metric assigns weights to links based on the RTT path of a packet size over the link path. They studied the performance of the metric by implementing it in three wireless scenarios consisting of 3, 4 and 5 nodes; each node represents a wireless radio IP router. They find that in a multi-hops environment, the real-time metric clearly shows the impact of DMS, UMS and FEC on RTT by making judicious use of the number of the hops.
Highlights
In this work, the authors consider the Round Trip Time (RTT) as the time required for a packet to travel from the source (SCADA center) to the destination and back again.The SCADA center allows technical operation management for PV power plants on site
This paper presents a new method for measuring RTT giving a quick performance overview based on several basic parameters
In light of the results obtained in real-time study metrics, it can be concluded that RTT depends on various parameters such as the number of hops, DMS, UMS and Forward Error Correction (FEC)
Summary
The authors consider the RTT as the time required for a packet to travel from the source (SCADA center) to the destination (remote RTU) and back again. The SCADA center allows technical operation management for PV power plants on site. A remote terminal unit (RTU) is a multipurpose device used for remote monitoring and control of various devices and systems for automation. The RTT is considered as an important measure in determining the accomplishment of a connection. RTT is effective and profitable in measuring the congestion window size and retransmission timeout of a connection [1] [2] [3] as well as the available bandwidth on an along path [4]
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