The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
This work presents two-rank (Wi-Fi and LTE) analytical model, from which we can evaluate the goodput of vehicular wireless network depending on the number of vehicles N in the access point (AP) coverage area. To evaluate the suitability of the model used, experimental data are compared with the theoretically calculated data. The results obtained allow us to evaluate the performance of each individual...
Combining Wi-Fi and LTE data transmission technologies we can obtain an integrated solution that provides full end-to-end data transmission channel. This article compares goodputs of two LTE routers, which connect multiple WLAN access points (including Wi-Fi access controller) with the remote FTP server. Handover impact on data channel goodput is measured between wireless access points. Experimental...
The main purpose of the present work is to estimate the Hurst parameter in real-time as a measure of network traffic self-similarity. There are many possible solutions for Hurst parameter estimation, but in this research the discrete wavelet transform approach has been used. The main reason is the possibility to calculate discrete wavelet transform in real-time for every input sample separately. There...
The article describes software implementation of Hurst (self-similarity) parameter estimator based on discrete wavelet transform. The main purpose is to estimate the Hurst parameter as soon as possible, by using acquired traffic samples and avoiding segmentation and waiting for data accumulation. Thus, the processing of traffic would be evenly distributed over the entire measurement time interval,...
The main goal of the paper is to develop models for designing WLAN, used in transport networks with mobile objects‥ In this paper were considered two modes of movement traffic. In the first mode was considered the open model with an unlimited number of transport. In this mode is considered the highway with the different number of bands and with Erlang distribution of traffic flow. In the second mode...
The present article describes simulation results for single queue P/M/1/K model. Simulink has been used to create this model and evaluate its performance. The main purpose of the research made is to optimize costs of resources allocation for TCP traffic type at the same time striving to achieve the best packet loss probability. The optimization was made with dynamic programming method by using Bellman...
The article introduces an integrated network and traffic simulation platform called Opnet (Optimized Network Engineering Tool). This platform provides the capabilities of network simulation and network protocol simulation. In this paper, we simulate two layer network models with WiFi and WiMAX scenarios and compared their throughput and load HTTP and FTP protocols. Evaluating the performance of these...
Vehicular communication is a popular topic in the academia and the car industry. The aim of these growing interest is to develop an effective communication system for the Intelligent Transportation System (ITS). In this paper we presented the model of wireless base station good put evaluation. We used wireless access point model as a queuing system with variable requests and the auto traffic model...
Vehicle-to-infrastructure (V2I) communication based on wireless local area network (WLAN) technology can support highly mobile users to obtain Internet connectivity. Wireless access for the vehicular environment (i.e. IEEE802.11p) provides the required principal standardization for vehicle-to-vehicle V2V solution and supported raw data rate up to 27 Mbps. This standard mainly is oriented on urgent...
The real-time applications are both sensitive to delay and loss. As a result, quality of service guarantees have attracted a lot of research interest in the past decade. Dynamic management of system parameters like bandwidth and buffer capacity allows to gain essential performance benefits while quality of service guarantees are met. For the recent years a method of admission control based on measurements...
Quality of service guarantees have attracted a lot of research interest in the past decade as real-time applications are sensitive both to delay and loss. Dynamic management of system parameters like bandwidth and buffer capacity allows to gain essential performance benefits while quality of service guarantees are met. Recently, a method of admission control based on measurements (MBAC) have received...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.