Journal articles: 'QoS in WiMAX'

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Alavi, M.M.Ahamed, W.P.U Fernando, P.A.Y.P Permuna, et al. "Enhanced QoS support in OFDMA-Based WiMAX Systems." COMPUSOFT: An International Journal of Advanced Computer Technology 05, no. 04 (2016): 2090–95. https://doi.org/10.5281/zenodo.14791600.

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Worldwide Interoperability of Microwave Access (WiMAX) network offer promising opportunities for unwiring the last mile connectivity to the internet with its comprehensive support of Quality of Service(QoS). Everything has a disadvantage or a problem to be fixed, WiMAX also has a problem that is to provide QoS when providing data, audio and video services. Actually it"s not a problem though as it supports orthogonal frequency division multiple access (OFDMA) technology. However the combination of several technologies like OFDM, OFDMA assures the QoS of WiMAX. One of the main features in a WiMAX MAC layer is that it can provide differentiated services among different traffic categories with individual QoS requirements. In this research paper the research team first give an overview of the key aspects of WiMAX and describe Multimedia broadcast multicast service (MBMS) architecture and then propose a broadcast architecture for WiMAX that is based on MBMS to increase the QoS of Multimedia Streaming in WiMAX. 

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Bohnert, Thomas Michael, Marco Castrucci, Nicola Ciulli, et al. "QoS Management and Control for an All-IP WiMAX Network Architecture: Design, Implementation and Evaluation." Mobile Information Systems 4, no. 4 (2008): 253–71. http://dx.doi.org/10.1155/2008/407565.

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The IEEE 802.16 standard provides a specification for a fixed and mobile broadband wireless access system, offering high data rate transmission of multimedia services with different Quality-of-Service (QoS) requirements through the air interface. The WiMAX Forum, going beyond the air interface, defined an end-to-end WiMAX network architecture, based on an all-IP platform in order to complete the standards required for a commercial rollout of WiMAX as broadband wireless access solution. As the WiMAX network architecture is only a functional specification, this paper focuses on an innovative solution for an end-to-end WiMAX network architecture offering in compliance with the WiMAX Forum specification. To our best knowledge, this is the first WiMAX architecture built by a research consortium globally and was performed within the framework of the European IST project WEIRD (WiMAX Extension to Isolated Research Data networks). One of the principal features of our architecture is support for end-to-end QoS achieved by the integration of resource control in the WiMAX wireless link and the resource management in the wired domains in the network core. In this paper we present the architectural design of these QoS features in the overall WiMAX all-IP framework and their functional as well as performance evaluation. The presented results can safely be considered as unique and timely for any WiMAX system integrator.

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Pranindito, Dadiek, Rendy Munadi, and R. Rumani Rumani. "Analisis Perbandingan Performansi Penjadwalan Paket Antara Homogeneous Algorithm Dengan Hybrid Algorithm Pada Jaringan Point-To-Multipoint Wimax." JURNAL INFOTEL - Informatika Telekomunikasi Elektronika 6, no. 2 (2014): 63. http://dx.doi.org/10.20895/infotel.v6i2.18.

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Saat ini, dalam dunia telekomunikasi, (Worldwide Interoperability for Microwave Access) WiMaX merupakan teknologi nirkabel yang menyediakan hubungan jalur lebar dalam jarak jauh, memiliki kecepatan akses yang tinggi dan jangkauan yang luas serta menyediakan berbagai macam jenis layanan. Masalah yang menarik dan menantang pada WiMaX adalah dalam hal menyediakan jaminan kualitas pelayanan (QoS) untuk jenis layanan yang berbeda dengan bermacam-macam kebutuhan QoS-nya. Untuk memenuhi kebutuhan QoS tersebut, maka diperlukan suatu algoritma penjadwalan. Dalam penelitian ini dilakukan simulasi jaringan WiMaX menerapkan algoritma penjadwalan dengan metode homogeneous algorithm dan hybrid algorithm. Perwakilan pada metode homogeneous algorithm akan menggunakan algoritma penjadwalan Weighted Fair Queuing (WFQ) dan Deficit Round Robin (DRR), sedangkan pada metode hybrid algorithm menggunakan penggabungan antara algoritma penjadwalan DRR dan WFQ. Pengujian kinerja algoritma penjadwalan tersebut dilakukan dengan membandingkan kedalam 5 jenis kelas QoS pada WiMAX yaitu UGS, rtPS, nrtPS, ertPS, dan Best Effort. Dari hasil pengujian, hybrid algorithm memberikan nilai QoS yang lebih baik jika dibandingkan dengan homogeneous algorithm. hybrid algorithm sangat cocok jika diterapkan pada kondisi jaringan yang memiliki trafik dengan paket data yang bervariasi, karena dapat menghasilkan throughput yang tinggi, serta dapat menghasilkan nilai delay dan jitter yang rendah

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Shyh-Fang, Huang. "Video Classification and Adaptive QoP/QoS Control for Multiresolution Video Applications on IPTV." International Journal of Digital Multimedia Broadcasting 2012 (2012): 1–7. http://dx.doi.org/10.1155/2012/801641.

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With the development of heterogeneous networks and video coding standards, multiresolution video applications over networks become important. It is critical to ensure the service quality of the network for time-sensitive video services. Worldwide Interoperability for Microwave Access (WIMAX) is a good candidate for delivering video signals because through WIMAX the delivery quality based on the quality-of-service (QoS) setting can be guaranteed. The selection of suitable QoS parameters is, however, not trivial for service users. Instead, what a video service user really concerns with is the video quality of presentation (QoP) which includes the video resolution, the fidelity, and the frame rate. In this paper, we present a quality control mechanism in multiresolution video coding structures over WIMAX networks and also investigate the relationship between QoP and QoS in end-to-end connections. Consequently, the video presentation quality can be simply mapped to the network requirements by a mapping table, and then the end-to-end QoS is achieved. We performed experiments with multiresolution MPEG coding over WIMAX networks. In addition to the QoP parameters, the video characteristics, such as, the picture activity and the video mobility, also affect the QoS significantly.

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Huchappa, Ravishankar, and Kiran Kumari Patil. "Evolutionary model to guarantee quality of service for tactical worldwide interoperability for microwave access networks." IAES International Journal of Artificial Intelligence (IJ-AI) 11, no. 2 (2022): 687. http://dx.doi.org/10.11591/ijai.v11.i2.pp687-698.

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The smart phone industries evolution had made the growth in wireless communication. The increase in social media usage led to huge increase of network traffic as sharing of data for multimedia like video conferencing, and voice over internet protocol (VoIP). Majority of services like this requires network resources and real-time strict quality of service (QoS). However high cost of network deployment is included. All the major service providers are currently being adopted to the WiMAX 802.16 network. Therefore, the worldwide interoperability for microwave access (WiMAX) network must have different supply policies and QoS for various applications. The implementation of these QoS policies was not provided by WiMAX for various needs of application. Recently development of various scheduling mechanism for QoS provisioning has been made. However, users improper synchronization made these models inefficient. To address this, uplink scheduling with feedback is considered to provision QoS. However, it induces delay in accessing slots, as result the bandwidth is wasted. To utilize bandwidth efficiently evolutionary computing is adopted by various existing model. However, these models induce computation overhead and may not be suitable for provisioning real-time services. The evolutionary computing model is used to compute ideal threshold.

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Ravishankar, Huchappa, and Kumari Patil Kiran. "Evolutionary model to guarantee quality of service for tactical worldwide interoperability for microwave access networks." International Journal of Artificial Intelligence (IJ-AI) 11, no. 2 (2022): 687–98. https://doi.org/10.11591/ijai.v11.i2.pp687-698.

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The smart phone industries evolution had made the growth in wireless communication. The increase in social media usage led to huge increase of network traffic as sharing of data for multimedia like video conferencing, and voice over internet protocol (VoIP). Majority of services like this requires network resources and real-time strict quality of service (QoS). However high cost of network deployment is included. All the major service providers are currently being adopted to the WiMAX 802.16 network. Therefore, the worldwide interoperability for microwave access (WiMAX) network must have different supply policies and QoS for various applications. The implementation of these QoS policies was not provided by WiMAX for various needs of application. Recently development of various scheduling mechanism for QoS provisioning has been made. However, users improper synchronization made these models inefficient. To address this, uplink scheduling with feedback is considered to provision QoS. However, it induces delay in accessing slots, as result the bandwidth is wasted. To utilize bandwidth efficiently evolutionary computing is adopted by various existing model. However, these models induce computation overhead and may not be suitable for provisioning real-time services. The evolutionary computing model is used to compute ideal threshold.

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Dr.B.Sridevi, Priya R.Anantha, and V.S.Primiya. "PROPOSED WFQ BASED DYNAMIC BANDWIDTH ALLOCATION FOR MOBILE WIMAX APPLICATION." International Journal of Computational Science and Information Technology (IJCSITY) 2, May (2014): 1–11. https://doi.org/10.5281/zenodo.3548117.

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ABSTRACT In this project, we proposed a framework to support heterogenous traffic with different QoS demand in WiMAX. This framework dynamically changes the bandwidth allocation (BA) for ongoing and new arrival connections based on network condition and service demand. The objective is to efficiently use the available bandwidth and provide QoS support in a fair manner. Dynamic allocation of spectrum prior to transmission can mitigate the starvation problem of Non Real time application. The WFQ based dynamic bandwidth allocation framework uses architecture that has packet scheduler scheme (PS), call admission policy and a dynamic bandwidth allocation mechanism. By the simulation result we have showed that this architecture could provide QoS support by being fair to all classes of services. KEYWORDS QoS in WiMAX, Dynamic Bandwidth Allocation, WFQ.

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Sangeetha, J., Keerthiraj Nagaraj, K. N. Balasubramanya Murthy, and Ram P. Rustagi. "A New Approach for Analyzing the Performance of the WiMAX Networks based on QoS Traffic Prediction Routing Protocol using Gene Expression Programming." International Journal of Applied Metaheuristic Computing 7, no. 2 (2016): 16–38. http://dx.doi.org/10.4018/ijamc.2016040102.

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WiMAX is one of the broadband wireless access technologies, which provides the efficient QoS to the large number of users. The multimedia applications such as real time and non-real time services are gaining importance in the WiMAX network. To support such applications, there is a need to propose an efficient QoS traffic prediction routing protocol for the WiMAX networks. To address this, the authors are using Gene Expression Programming technique. They have generated datasets for CBR based traffic and file transfer applications. Here, they focus to develop the mathematical expressions for throughput of the network in terms of bandwidth, average end-to-end delay and average jitter for CBR based traffic and file transfer applications, so that they can analyze and predict the QoS traffic of the network. The simulation results show that the model values and the target values match with better approximation. Further, sensitivity analysis has been carried out for both CBR based traffic and file transfer applications.

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Liu, Qiang, Min Chen, Jie Zhang, Bingwen Shen, and Zhong Chu. "Network Planning for WiMAX-R Networks." JUCS - Journal of Universal Computer Science 18, no. (9) (2012): 1194–217. https://doi.org/10.3217/jucs-018-09-1194.

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In this paper, a novel network planning process of the Mobile WiMAX for Railway (WiMAX-R) network is proposed. We first analyze the factors need considered in network planning. After introducing the WiMAX-R network architecture, the WiMAX-R network planning process is presented in detail. The process comprises application analysis, capacity prediction, network parameters configuring, coverage planning, handover planning and network simulation validation. In each step, Mobile WiMAX technical features and railway environment characters are both take into consideration. Finally, we simulated a WiMAX-R planning example based on OPNET platform. The simulation results showed that the designed WiMAX-R network can perfectly satisfy the applications' QoS requirements.

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Hamza, Ekhlas Kadhum, and Shahad Nafea. "Design and Analysis WIMAX Network Based on Coverage Planning." Journal of Engineering 26, no. 2 (2020): 99–110. http://dx.doi.org/10.31026/j.eng.2020.02.08.

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In this paper, wireless network is planned; the network is predicated on the IEEE 802.16e standardization by WIMAX. The targets of this paper are coverage maximizing, service and low operational fees. WIMAX is planning through three approaches. In approach one; the WIMAX network coverage is major for extension of cell coverage, the best sites (with Band Width (BW) of 5MHz, 20MHZ per sector and four sectors per each cell). In approach two, Interference analysis in CNIR mode. In approach three of the planning, Quality of Services (QoS) is tested and evaluated. ATDI ICS software (Interference Cancellation System) using to perform styling. it shows results in planning area covered 90.49% of the Baghdad City and used 1000 mobile subscribers and percentage connect with base station 84.3% on the establish QoS requirements . 

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Zotos, Nikolaos, Evangelos Pallis, and Anastasios Kourtis. "Performance Evaluation of Triple Play Services Delivery with E2E QoS Provisioning." International Journal of Digital Multimedia Broadcasting 2010 (2010): 1–14. http://dx.doi.org/10.1155/2010/836501.

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The creation and wide use of new high quality demanding services (VoIP, High Quality Video Streaming) and the delivery of them over already saturated core and access network infrastructures have created the necessity for E2E QoS provisioning. Network Providers use at their infrastructures several kinds of mechanisms and techniques for providing QoS. Most known and widely used technologies are MPLS and DiffServ. The IEEE 802.16-2004 standard (WiMAX) refers to a promising wireless broadband technology with enhanced QoS support algorithms. This document presents an experimental network infrastructure providing E2E QoS, using a combination of MPLS and DiffServ technologies in the core network and WiMAX technology as the wireless access medium for high priority services (VoIP, High Quality Video Streaming) transmission. The main scope is to map the traffic prioritization and classification attributes of the core network to the access network in a way which does not affect the E2E QoS provisioning. The performance evaluation will be done by introducing different kinds of traffic scenarios in a saturated and overloaded network environment. The evaluation will prove that this combination made feasible the E2E QoS provisioning while keeping the initial constrains as well as the services delivered over a wireless network.

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Wang, Neng Chung, Yung Kuei Chiang, and Shiao Ming Wei. "RSVP Extensions for Mobility Management in Heterogeneous WLAN/WiMAX Networks." Applied Mechanics and Materials 284-287 (January 2013): 2845–49. http://dx.doi.org/10.4028/www.scientific.net/amm.284-287.2845.

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Quality of service (QoS) is so significant that it cannot be neglected in the recent evolution of wireless mobile networks, which are characterized by great heterogeneity. Handoff delay is one of the problematic issues that users are facing in the heterogeneous networks. In the wireless networks, many mobile users still cannot obtain the network resources they need when applying real-time services while handoff occurs. Consequently, providing a seamless handoff for QoS connections in heterogeneous wireless local area network (WLAN) and worldwide interoperability for microwave access (WiMAX) is crucial. In this paper, a resource ReSerVation Protocol (RSVP) extension scheme for seamless handoff in heterogeneous WLAN/WiMAX networks is proposed. The proposed scheme is based on QoS aware mobility architecture to guarantee a certain degree of QoS. The network selection is initiated by the mobility of the mobile station (MS) and pre-handoff is performed, basing on received signal strength (RSS). Simulation results show that the proposed scheme outperforms the previous schemes.

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Wu, Chien-Yu, Hann-Jang Ho, Sing-Ling Lee, and Liang Lung Chen. "Fairness Time-Slot Allocation and Scheduling with QoS Guarantees in Multihop WiMAX Mesh Networks." Mathematical Problems in Engineering 2013 (2013): 1–14. http://dx.doi.org/10.1155/2013/293962.

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The WiMAX technology has been defined to provide high throughput over long distance communications and support the quality of service (QoS) control applied on different applications. This paper studies the fairness time-slot allocation and scheduling problem for enhancing throughput and guaranteeing QoS in multihop WiMAX mesh networks. For allocating time slots to multiple subscribe stations (SSs), fairness is a key concern. The notion of max-min fairness is applied as our metric to define the QoS-based max-min fair scheduling problem for maximizing the minimum satisfaction ratio of each SS. We formulate an integer linear programming (ILP) model to provide an optimal solution on small-scale networks. For large-scale networks, several heuristic algorithms are proposed for better running time and scalability. The performance of heuristic algorithms is compared with previous methods in the literatures. Experimental results show that the proposed algorithms are better in terms of QoS satisfaction ratio and throughput.

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Jaiprabha, Gothwal *1 Dr.Anurag Shrivastava 2. "A SURVEY ON QUALITY OF SERVICE IN OFDM BASED WIMAX SYSTEMS." INTERNATIONAL JOURNAL OF ENGINEERING SCIENCES & RESEARCH TECHNOLOGY 7, no. 5 (2018): `328–333. https://doi.org/10.5281/zenodo.1247049.

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Worldwide Interoperability for Microwave Access often termed as WiMax is an effective OFDM based technique used for providing last mile connectivity to end users specifically in a wireless network. Wireless Fidelity is fundamentally limited by communication range and data rate which is overcome by WiMax systems. However due to the large coverage area of WiMax, it is susceptible to distortions created by the non-ideal nature of wireless channels. This results in Bit Error Rate degradation of the wireless system, thereby degrading the Quality of Service (QoS). This paper presents the basics of WiMax Systems, the main challenges faced by WiMax based systems and techniques or methodologies to overcome the challenges to enhance system performance.

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FURQAN, FATIMA, and DOAN B. HOANG. "Wireless Fair Intelligent Congestion Control — A QoS Performance Evaluation." Journal of Interconnection Networks 14, no. 03 (2013): 1360001. http://dx.doi.org/10.1142/s0219265913600013.

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In Broadband Wireless Access (BWA) networks, provisioning of Quality of Service (QoS) is absolutely essential for real time and non real time services. Congestion in these networks can lead to deterioration in QoS experienced by the network users. Congestion avoidance is rarely considered to ensure the QoS of wireless connections. Efforts are mainly aimed at reducing the overload once it has occurred. To avoid congestion at the base station in WiMAX networks, the WiMAX Fair Intelligent Congestion Control (WFICC) was proposed to ensure the traffic is scheduled in such a way that the base station output buffer operates around a target operating point without violating the QoS requirements of connections. The aim of this paper is to investigate WFICC thoroughly and evaluate its performance in terms of throughput, delay and jitter for different Classes of Services (CoSs) under various parameter settings of the algorithm. A detailed and comprehensive simulation study on various settings of parameters is performed in ns-2. The results show that WFICC performs excellently in allocating resources fairly among Class of Services (CoSs) and also preserves their QoS requirements. Furthermore, WFICC is robust and easily adapted to various traffic conditions.

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Samundiswary, P., and Sivasindhu M. "Performance analysis of integrated WLAN-WiMAX-UMTS networks for multimedia applications." International Journal of Engineering & Technology 7, no. 3.29 (2018): 214. http://dx.doi.org/10.14419/ijet.v7i3.29.18798.

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Next Generation Wireless networks (NGWN) are the integration of different types of available wireless networks. These integrated networks will provide seamless connectivity for multimedia user applications. Among various wireless networks, the networks such as Wireless Local Area network (WLAN), Worldwide Interoperability for Microwave Access (WiMAX) and Universal Mobile Telecommunications System (UMTS) have their own unique characteristics and support for wide range of multimedia user applications. So, the integration of these networks and their performance analysis in respect of Quality of Service (QoS) is a major concern nowadays. Hence, this paper deals with the integration of WLAN, WiMAX and UMTS networks by considering QoS parameter. Further, the integration of these networks are analyzed with loose coupling and tight coupling architecture along with and without QoS. Furthermore, the performance analysis of the above mentioned integrated network for multimedia applications is also done. The simulation is performed through Opnet simulator.

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PALLA, SRAVANI, and S. PALLAM SETTY. "ENHANCING QoS IN WiMAX USING OPNET SIMULATOR." i-manager’s Journal on Wireless Communication Networks 8, no. 4 (2020): 7. http://dx.doi.org/10.26634/jwcn.8.4.17704.

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M. Hassan, Ahmed Hassan, Elrasheed Ismail M. ZAYID, Mohammed Altayeb Awad, and Ahmed Salah Mohammed. "Performance Evaluation of QoS in WiMAX Network." Computer Applications: An International Journal 2, no. 2 (2015): 15–23. http://dx.doi.org/10.5121/caij.2015.2202.

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Shareef, Zayd Ashraf, Masnida Hussin, Azizol Abdullah, and Abdullah Muhammed. "Class-based QoS scheduling of WiMAX networks." Journal of High Speed Networks 24, no. 4 (2018): 345–62. http://dx.doi.org/10.3233/jhs-180599.

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Chauhan, Mamta, Rajneesh Choubey, and Roopali Soni. "Survey on Handoff with QoS in WIMAX." International Journal of Computer Applications 50, no. 16 (2012): 23–27. http://dx.doi.org/10.5120/7855-1114.

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Mohamed, M. A., M. Zubair, and H. M. Ibrahim. "QoS Based IPTV Over Mobile WiMAX Networks." Wireless Personal Communications 96, no. 2 (2017): 1711–40. http://dx.doi.org/10.1007/s11277-017-4264-6.

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S, Mahesh D., Chandramouli H, and Sanjay R. Chitnis. "Adaptive uplink scheduling model for WiMAX network using evolutionary computing model." Indonesian Journal of Electrical Engineering and Computer Science 14, no. 3 (2019): 1345. http://dx.doi.org/10.11591/ijeecs.v14.i3.pp1345-1355.

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the increased usage of smart phones has led to increase usage an internet based application services. These application requires different quality of service (QoS) and bandwidth requirement. WiMAX is an efficient network to provision high bandwidth connectivity and coverage to end user. To meet QoS requirement the exiting model used adaptive model selection scheme. However, these model induce bandwidth wastage as it does not considers any feedback information for scheduling. This work present an Adaptive Uplink Scheduling (AUS) by optimizing MAC layer using Multi-Objective Genetic Algorithm (MOGA). The MAC scheduler use feedback information from both physical layer and application layer. Further, to meet QoS requirement of application and utilize bandwidth efficiently this paper presented an adaptive modulation selection scheme based on user application requirement using MOGA. Our model provides application level based QoS provisioning for WiMAX network. Experiment are conducted to evaluate performance of AUS over exiting model. The overall result attained shows AUS model attain good performance in term of throughput, successful packet transmission and packet collision.

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A.K.Kavitha, *1 Vanitha R2. "ANALYSIS OF QOS BASED VERTICAL HANDOFF SCHEME FOR WIMAX/WLAN." INTERNATIONAL JOURNAL OF ENGINEERING SCIENCES & RESEARCH TECHNOLOGY 9, no. 2 (2020): 119–23. https://doi.org/10.5281/zenodo.3692940.

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Recently, a number of wireless communication technologies are migrating toward heterogeneous overlay networks. The integration of Mobile WIMAX and WLAN seems to be a promising approach due to their homogeneous nature and complementary characteristics. In this paper the investigation of several important issues for the interworking of Mobile WIMAX and WLAN networks are discussed by addressing a tightly coupled interworking architecture. A seamless and proactive vertical handoff scheme is designed based on the architecture with aims to provide always the best quality of service (QOS) for users. In tightly coupled architecture WLAN works as a radio access network of cellular system, and loosely coupled where different networks which are independently deployed but integrated at network layer. Comparably, a more seamless VHO can be expected in the tightly coupled networks, where the handoff execution follows the protocols of cellular network conditions. A very simple evaluation algorithm is developed to estimate the conditions of both WIMAX and WLAN networks in terms of available bandwidth and packet delay. This scheme can keep stations always being best connected.

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Cheng, Yu, Hong Wei Zhao, Yu Cui Li, and Shi Hui Pei. "Medium Access Control Layer Design and Simulation for 802.16 System." Advanced Materials Research 756-759 (September 2013): 338–43. http://dx.doi.org/10.4028/www.scientific.net/amr.756-759.338.

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In order to analyze transmission performance of broad band wireless communication system based on 802.16 protocol, address the key issues of QoS scheduling algorithm, and network congestion, etc, we present our design of WiMAX medium access control (MAC) layer based on 802.16 protocol in this paper. The implemented design comprises the service-specific convergence sub-layer (CS), the MAC common part sub-layer (CPS), a call admission control mechanism, and a scheduler. In the next simulation experiment, we tested the throughput and average delay of the system which we designed under the conditions in different time or number of clients. The design and simulation had provided a platform and foundation for further to improve the efficiency of bandwidth management algorithm, scheduling algorithm, QoS management, and enhancing the performance of WiMAX systems.

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Lawal, Ibrahim A., Adamu A. Ibrahim, and Nuha A. Zammarah. "Improving the Quality of Service of Fixed WiMAX Networks by Decreasing Application Response Time Using a Distributed Model." International Journal of Interactive Mobile Technologies (iJIM) 16, no. 22 (2022): 75–93. http://dx.doi.org/10.3991/ijim.v16i22.35675.

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In the most recent few years, there has been a meteoric rise in the number of different wireless networks, as has the demand for wireless data services and multimedia applications. An improvement in quality of service (QoS) is required in order to meet the ever-increasing demand while also providing a service that is of a higher standard. One of the most cutting-edge technologies, known as World Wide Interoperability for Microwave Access (WIMAX), was developed with the quality of service in mind during its development. Despite utilizing the most recent advancements in technology, the WiMAX network continues to struggle with QoS performance issues. A brand new distributed Client-Server model was designed for the fixed WiMAX Network in order to reduce application response time. This was done in order to improve the quality of service performance. In order to make a comparison with the existing centralized model, the performance of the proposed model was analyzed with OPNET Modeler 16.0. According to the findings, the newly proposed distributed Client-Server system is capable of satisfying the requirements set forth by its users owing to an improvement in QoS performance in terms of application response time when compared to the conventional model. The performance of the network was increased by the deployment of more Base Stations (BSs), Subscriber Stations, and the utilization of client-server Base Stations that were chosen by the Nearest Neighborhood Algorithm that was devised

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Laias, Elmabruk, and Irfan Awan. "An interactive QoS framework for fixed WiMAX networks." Simulation Modelling Practice and Theory 18, no. 3 (2010): 291–303. http://dx.doi.org/10.1016/j.simpat.2009.11.004.

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Zhang, Yan, Honglin Hu, and Hsiao-Hwa Chen. "QoS Differentiation for IEEE 802.16 WiMAX Mesh Networking." Mobile Networks and Applications 13, no. 1-2 (2008): 19–37. http://dx.doi.org/10.1007/s11036-008-0035-7.

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https://airccse.org/journal/jwmn/1109s9.pdf. "Selfless Distributed Credit Based Scheduling for Improved QOS In IEEE 802.16 WBA Networks." International Journal of Wireless & Mobile Networks (IJWMN) 1, no. 2 (2022): 1–8. https://doi.org/10.5281/zenodo.6461248.

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Packet and flow scheduling algorithms for WiMAX has been a topic of interest for a long time since the very inception of WiMAX networks. WiMAX offers advantages particularly in terms of Quality of service it offers over a longer range at the MAC level. In our paper, we propose two credit based scheduling schemes one in which completed flows distributes the left over credits equally to all higher priority flows(FDCBSS) and another in which completed flows give away all the excess credits to the highest priority uncompleted flow(SDCBSS). Both the schemes are compatible with 802.16 MAC protocol and can efficiently serve real time bursty traffic with reduced latency and hence improved QOS for real time flows. We compare the two proposed schemes for their latency, bandwidth utilization and throughput for real time burst flows with the basic Deficit Round Robin scheduling scheme

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Garg, Roopali, and Shafi Singla. "The Analysis of Mobile WiMAX and LTE using MIMO technique." INTERNATIONAL JOURNAL OF COMPUTERS & TECHNOLOGY 5, no. 1 (2013): 35–40. http://dx.doi.org/10.24297/ijct.v5i1.4384.

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A quality of service is a fundamental component of the 4G broadband network for satisfactory service delivery by evolving internet application to end user, and managing the network resources. The 4G technology has emerged one of the most fruitful technologies as it supports large number of applications including VOIP, video conferencing, file transfer, video streaming and web browsing. IEEE 802.16E, IEEE 802.16M and LTE along with various application and QoS requirement also support Multiple-Input-multiple-output (MIMO) techniques including Spatial Multiplexing (SM), Space Time Block Coding(STBC) and Eigen Beam-forming (BM).In the paper we will study Physical, MAC layer of WiMAX and LTE. We will also study MIMO techniques. In this paper Â the detailed study of the throughput for a MIMO mobile WiMAX system and LTEÂ under two different PHY PER QoS threshold. Various modulation and channel coding techniques have been applied.

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Vishal A., Wankhede, Anant R. More, and M. S. G. Prasad. "Suboptimal resource allocation scheme for scalable video multicast in integrated mobile WiMAX/WLANs network." International Journal of Engineering & Technology 7, no. 2.7 (2018): 69. http://dx.doi.org/10.14419/ijet.v7i2.7.10297.

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The goal of Resource Allocation Scheme (RAS) is to accomplish maximum usage of resources, assures Quality of Service (QoS), exploit throughput and diminish power consumption with viable algorithm complexity and scalability of system. RA algorithm for dynamicRASin downlink Mobile WiMAX is to maximize the minimum rate of user while satisfying power constraint. This study emphasizes on scalable video transmission in Downlink Mobile WiMax BS with 5 WLAN’s each comprised of 10 users with different QoS requirements. Convex optimization techniques in scheduling algorithms marginally improve the performance measure as compared to traditional iterative non-linear methods. This study proposes Active-Set optimization technique for power allocation (PA) amongst sub-carrier per Subscriber Station (SS) and Greedy Weighted Algorithm (GWA) for sub-carrier allocation. Finally simulation results show that the proposed GWA and Active-Set optimization technique can effectively achieve maximum network throughput and number of satisfied users.

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Teng, Da, Shou-Bao Yang, Wei-Qing He, and Yun Hu. "QoS-TEOS: QoS Guaranteed Throughput-Efficiency Optimal Distributed Scheduling in WiMAX Mesh Networks." Journal of Computer Science and Technology 25, no. 5 (2010): 970–81. http://dx.doi.org/10.1007/s11390-010-9381-6.

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Razi, Asgher, and Sadim Mohd. "IMPLEMENTATION OF VOIP SERVICE IN MOBILE AD-HOC NETWORK." International Journal of Advances in Engineering & Scientific Research 2, no. 7 (2015): 08–15. https://doi.org/10.5281/zenodo.10726844.

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Abstract:                      Over Internet (VOIP) is an emerging popular Internet application that provides good services through Mobile Adhoc Network(MANET).MANET provides a suitable platform for the deployment of voice and multimedia session over IP network in many application scenarios that range from safety to comfort related services. But this network also faces many challenges on QoS issues due to packet loss because of transmission errors, short battery life and dynamic changing topologies. WiMAX is a wireless 4G technology, currently using by various industries &institutions which provides many advantages due to its high speed and large coverage area. Combining these technology together, in this paper we estimated the performance of various VOIP codecs with WiMAX in different scenarios (sparse and dense) over MANET.  Mobile ad-hoc networks one can extend the reach of existing fixed telephony. This whole mechanism of extending the reach of fixed telephony is also termed as Fixed to Mobile Convergence FMC) Key words: IP address allocation; MANET, VoIP, QoS, Codecs, WiMAX

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Bhosale, Sahana, and R. D. Daruwala. "Performance Evaluation of QoS Parameters during WiMAX to WiMAX Handoff using NS2 and QualNet." International Journal of Computer Applications 64, no. 9 (2013): 30–34. http://dx.doi.org/10.5120/10664-5435.

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Sreenivasulu, Ummiti, P. V. Naganjaneyulu, and M. N. Giriprasad. "Downlink Scheduling Algorithm for WiMAX Protocol to Improve QoS." Arabian Journal for Science and Engineering 43, no. 8 (2017): 4105–14. http://dx.doi.org/10.1007/s13369-017-2717-6.

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Lin, Yen-Wen, and Jhih-Siang Wang. "An Adaptive QoS Power Saving Scheme for Mobile WiMAX." Wireless Personal Communications 69, no. 4 (2012): 1435–62. http://dx.doi.org/10.1007/s11277-012-0644-0.

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Singh, Harwinder, and Maninder Singh Kamboj. "Performance Analysis of QoS in PMP Mode WiMax Networks." International Journal of Computer Applications 3, no. 12 (2010): 26–29. http://dx.doi.org/10.5120/788-1116.

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Ismael, Fath Elrahman, Sharifah K. Syed Yusof, Mazlan Abbas, N. M. Abdul Latiff, and Norsheila Fisal. "QoS aware transmission control scheme for multihop WiMAX network." International Journal of Communication Systems 27, no. 10 (2012): 1766–82. http://dx.doi.org/10.1002/dac.2434.

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Vaca Cano, Carlos Eduardo, and Román Alcides Lara Cueva. "Análisis de la calidad de servicio de una red WiMAX en conformidad con el estándar IEEE 802.16-2009 en escenarios exteriores / Analysis of the Quality of Service of a WiMAX network in accordance with IEEE 802.16 -2009 in outdoor scenarios." RECI Revista Iberoamericana de las Ciencias Computacionales e Informática 7, no. 13 (2018): 43–63. http://dx.doi.org/10.23913/reci.v7i13.77.

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El desarrollo tecnológico de las comunicaciones inalámbricas ha hecho que distintos dispositivos se vayan posicionando cada vez más en la vida cotidiana de los usuarios, con lo cual surge la demanda de soportar las mismas aplicaciones que se tienen en una red cableada. Ante esta exigencia se presentan limitaciones de ancho de banda, como es el caso de las redes inalámbricas WiMAX (Worldwide Interoperability for Microwave Access). Por lo tanto, se impone la necesidad de brindar calidad de servicio (QoS del inglés Quality of Service) para garantizar el desempeño del sistema en esa red. En este contexto, el objetivo de este artículo es realizar un análisis de los parámetros de QoS en la tecnología WiMAX según el estándar IEEE 802.16-2009 dentro de una topología diversificada de escenarios exteriores, mediante la utilización de una técnica intrusiva de inyección de tráfico para la obtención de las métricas de desempeño, como el retardo, jitter, paquetes perdidos y eficiencia del enlace. En este sentido, se ha verificado que el sistema cumple con las especificaciones necesarias para soportar aplicaciones como televisión digital y VoIP en tiempo real.

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Mohammed, Aminu, Abdulhakeem Abdulazeez, and Ahmed Tambuwal Yusuf. "Enhanced Priority Load-Aware Scheduling Algorithm for Wireless Broadband Networks." International Journal of Wireless Networks and Broadband Technologies 9, no. 2 (2020): 94–114. http://dx.doi.org/10.4018/ijwnbt.20200701.oa1.

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WiMAX, one of the emerging wireless broadband networks, was designed to support traffic from applications with diverse QoS requirements. In WiMAX, an efficient resource management technique such as scheduling is required for the proper allocation of network resources to these data streams. This article proposes an enhanced priority load-aware scheduling (EPLAS) algorithm to improve the performance of WiMAX networks. The proposed scheme adaptively determines the weight of each queue based on the queue load. It also introduces a packet drop control mechanism that reduces the packet drop rate and increases the average throughput of the network by prioritizing packets with the earliest deadlines within each queue. The performance of EPLAS was evaluated against other benchmark schemes using several simulation experiments. The results revealed that EPLAS performed significantly better than the benchmark algorithms in terms of average delay, average packet drop ratio, and average throughput.

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Harahap, Yoga Pradafa, and Aditya Prapanca. "Analisis Algoritma Penjadwalan Priority Queueing (PQ) terhadap Quality of Service (QoS) pada Jaringan Mobile WiMAX menggunakan OPNET Modeler." Journal of Informatics and Computer Science (JINACS) 3, no. 02 (2021): 104–12. http://dx.doi.org/10.26740/jinacs.v3n02.p104-112.

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Kualitas sebuah layanan pada jaringan mobile WiMAX bergantung pada service class dan penjadwalan yang digunakan. Priority Queueing merupakan algoritma penjadwalan dimana sebuah antrian diurutkan berdasarkan urutan antrian, paket dengan prioritas tinggi akan dipilih dan mendapatkan urutan paling awal. Adanya algoritma penjadwalan bertujuan untuk adil terhadap QoS pada layanan-layanan yang digunakan seperti FTP, HTTP, video conference dan VoIP. Pada simulator OPNET Modeler yang digunakan layanan menggunakan Type of Service untuk mengidentifikasi sebuah antrian. Lalu layanan tersebut disesuaikan dengan service class yang digunakan pada WiMAX. Hasilnya, pada penggunaan algoritma Priority Queueing nilai throughput terbaik pada masing-masing layanan yaitu, layanan FTP sebesar 2259.30954 bps, layanan HTTP sebesar 3112.70472 bps, video conference sebesar 4000.45667 bps dan, layanan VoIP sebesar 3200.45111 bps. Nilai delay terbaik pada masing-masing layanan yaitu, layanan FTP sebesar 5255.47904 ms, layanan HTTP sebesar 587.16361 ms, layanan video conference sebesar 2.28657 ms dan, layanan VoIP sebesar 260.62925 ms. Nilai jitter terbaik pada masing-masing layanan yaitu, layanan FTP sebesar 0.0000000000142109 ms, layanan HTTP sebesar 0.04461279 ms, layanan video conference sebesar 0.000164906 ms dan, layanan VoIP sebesar 0.00009812018 ms. Nilai packet loss pada masing-masing layanan yaitu, layanan FTP sebesar 0%, layanan HTTP sebesar 0%, layanan video conference sebesar 0.02830% dan, layanan VoIP sebesar 0.00353%. Jadi rata-rata nilai QoS pada 4 layanan yang diuji mendapatkan nilai 3.1875 masuk pada kategori ”Memuaskan”. Kata Kunci— Mobile WiMAX, Priority Queueing, Throughput, Delay, Jitter, Packet Loss.

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Mutasim, Mohammed EL Khier. "QoS of VOIP Over Broadband Network." International Journal of Engineering and Management Research 9, no. 5 (2019): 122–25. https://doi.org/10.31033/ijemr.9.5.17.

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The paper discussed the implementation of the use of Voice over Internet Protocol services, which is resulting in the enormous growth of broadband network. The main objective of this paper is to evaluate the QoS of VOIP for different broad band networks. Wired, Wireless Local Area Network (WLAN), Worldwide Interoperability for Microwave Access (WiMAX) and Universal Mobile Telecommunication System (UMTS) networks were implemented in OPNET Modeler The quality is compared using different QoS parameters such as end-to-end delay, Mean Opion Score (MOS), throughput and jitter. The VoIP codes used in the measurements of QoS is G.729A with sampling rate of 8 kbps .The results analyzed and the performance evaluated will give network operators an opportunity to select the codec for better services of VoIP for customer satisfaction.

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Shi, Heng Hua, Xin Xu, Yu Jie Wang, and Wei Kang. "Research on QoS of ertPS of 802.16e Scheduling Algorithms." Advanced Materials Research 490-495 (March 2012): 2998–3002. http://dx.doi.org/10.4028/www.scientific.net/amr.490-495.2998.

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ertPS is an extension of rtPS and combines the efficiency of UGS and rtPS. Based on ertPS, base station can provide the active authorization unicast as UGS, and better than UGS. In OPNET environment, we model and simulate ertPS of moble WiMAX MAC layer scheduling algorithms based on IEEE 802.16e protocol. The simulation results compare the performance of ertPS with UGS on load, delay, delay variation and etc., and analyze QoS according to IEEE 802.16e protocol.

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Vardakas, John S., Ioannis D. Moscholios, Nizar Zorba, Michael D. Logothetis, and Christos Verikoukis. "Delay Analysis of Converged Optical- Wireless Networks with QoS Support." IET Circuits, Devices & Systems 8, no. 5 (2014): 339–48. https://doi.org/10.5281/zenodo.259542.

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The convergence of two popular access technologies, namely WiMAX and Passive Optical Network (PON) is a promising access solution that combines the mobility feature of WiMAX and the ample bandwidth of PONs. In such a converged optical-wireless access network, the provision of Quality of Service (QoS) support is a challenging issue, mainly due to the di erent bandwidth allocation mechanisms of the two access technologies. Since the considered convergence seems to be dominant, it deserves assiduous analysis and evaluation. In this paper, we investigate the delay performance of a converged optical-wireless network that provides QoS support by considering multiple service-classes withdi erent priorities. In the wireless domain, the IEEE 802.16 standard is applied, while in the optical domain a Wavelength Division Multiplexing Ethernet PON (WDM-EPON) provides connectivity to both wired and wireless users. We present an analytical framework for the calculation of the average end-to-end packet delay of each service-class, by developing two queuing models for each domain of the converged network. The end-to-end delay is calculated as the sum of the queuing delay in both domains, and the transmission and propagation delay in the optical domain. The accuracy of the proposed analysis has been verified by simulation and found to be quite satisfactory.

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Pon Kumar D, David Neels, and Murugesan K. "" PERFORMANCE ANALYSIS OF AI BASED QOS SCHEDULER FOR MOBILE WIMAX"." ICTACT Journal on Communication Technology 03, no. 03 (2012): 572–79. http://dx.doi.org/10.21917/ijct.2012.0081.

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L, Nithyanandan, and Susila J. "Resource Allocation Algorithms for QoS Optimization in Mobile Wimax Networks." International Journal of Wireless & Mobile Networks 5, no. 3 (2013): 77–91. http://dx.doi.org/10.5121/ijwmn.2013.5306.

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Guesmi, Hattab, Sassi Maaloul, and Rached Tourki. "Design of Scheduling Algorithm for QoS Management on WiMAX Networks." Computer Science and Engineering 1, no. 2 (2012): 43–50. http://dx.doi.org/10.5923/j.computer.20110102.08.

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Hasina Attaullah, and Muhammad Younus Javed. "QoS based Vertical handover between UMTS, WiFi and WiMAX Networks." Journal of Convergence Information Technology 4, no. 3 (2009): 59–64. http://dx.doi.org/10.4156/jcit.vol4.issue3.8.

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Andreadis, Alessandro, Sandro Rizzuto, and Riccardo Zambon. "A WiMAX simulation module for investigating QoS during horizontal handovers." Simulation Modelling Practice and Theory 29 (December 2012): 52–65. http://dx.doi.org/10.1016/j.simpat.2012.06.005.

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Ahmed, Zeeshan, Salima Hamma, and Zafar Nasir. "An optimal bandwidth allocation algorithm for improving QoS in WiMAX." Multimedia Tools and Applications 78, no. 18 (2019): 25937–76. http://dx.doi.org/10.1007/s11042-019-07801-z.

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Roy, J. Jackson Juliet, V. Vaidehi, and M. S. Sricharan. "QoS guaranteed integration methodology for a WLAN–WiMAX heterogeneous network." Computers & Electrical Engineering 37, no. 3 (2011): 261–74. http://dx.doi.org/10.1016/j.compeleceng.2011.01.001.

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Journal articles on the topic 'QoS in WiMAX'

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