Journal articles: 'Mobile broadband wireless access'

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Bolton, W., Yang Xiao, and M. Guizani. "IEEE 802.20: mobile broadband wireless access." IEEE Wireless Communications 14, no. 1 (February 2007): 84–95. http://dx.doi.org/10.1109/mwc.2007.314554.

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Li, Bo, Yang Qin, Chor Low, and Choon Gwee. "A Survey on Mobile WiMAX [Wireless Broadband Access]." IEEE Communications Magazine 45, no. 12 (December 2007): 70–75. http://dx.doi.org/10.1109/mcom.2007.4395368.

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Di Zenobio, Dario, Massimo Celidonio, Lorenzo Pulcini, and Arianna Rufini. "A Femtocellular-Cabled Solution for Broadband Wireless Access." International Journal of Interdisciplinary Telecommunications and Networking 3, no. 2 (April 2011): 38–50. http://dx.doi.org/10.4018/jitn.2011040103.

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Broadband Wireless Access is a strategic opportunity for mobile operators which aim to provide connectivity in digital divide areas, in order to accelerate speed of deployment and save in installation costs. This paper presents an innovative approach to access the end user, relying on infrastructural integration of femtocellular technology with existing cabled network. Usually, the adoption of Femtocell Access Points, operating in the licensed cellular bands typically designed to be used in SOHO, improves the radio coverage and the building penetration of the existing mobile networks, based on macrocells. In the proposed solution, the peculiar functionality of femtocells is further improved using a MATV/SMATV cabled infrastructure which facilitates the signal connection inside the building. The potentiality of the solution is even more evident, taking into account the growing interest towards the possible deployment of new mobile technologies, like LTE in both the last portion of the UHF band V and the GSM frequency band, resulting from the re-farming process.

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Lu, W. W. "Compact multidimensional broadband wireless: the convergence of wireless mobile and access." IEEE Communications Magazine 38, no. 11 (2000): 119–23. http://dx.doi.org/10.1109/35.883500.

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Widiyastuti, Inasari. "Penerimaan Layanan Mobile Broadband Wireless Access di Kota Yogyakarta." Buletin Pos dan Telekomunikasi 10, no. 1 (March 23, 2015): 1. http://dx.doi.org/10.17933/bpostel.2012.100101.

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Ha, Imsook, Youngseog Yoon, and Munkee Choi. "Determinants of adoption of mobile games under mobile broadband wireless access environment." Information & Management 44, no. 3 (April 2007): 276–86. http://dx.doi.org/10.1016/j.im.2007.01.001.

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Emara, Tamer Z. "Maximizing Power Saving for VoIP over WiMAX Systems." International Journal of Mobile Computing and Multimedia Communications 7, no. 1 (January 2016): 32–40. http://dx.doi.org/10.4018/ijmcmc.2016010103.

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The voice-over-Internet protocol (VoIP) service is expected to be widely supported in wireless mobile networks. Mobile Broadband Wireless networks VoIP service to users with high mobility requirements, connecting via portable devices which rely on the use of batteries by necessity. Energy consumption significantly affects mobile subscriber stations in wireless broadband access networks. Efficient energy saving is an important and challenging issue because all mobile stations are powered by limited battery lifetimes. Therefore, the authors propose an adaptive mechanism suitable for VoIP service with silence suppression. The proposed mechanism was examined with a computer simulation. The simulation results demonstrate that the proposed mechanism reduces energy consumption.

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Maier, Martin. "Fiber-Wireless (FiWi) Broadband Access Networks in an Age of Convergence: Past, Present, and Future." Advances in Optics 2014 (June 22, 2014): 1–23. http://dx.doi.org/10.1155/2014/945364.

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After describing the beginnings and state of the art of integrated fiber-wireless (FiWi) broadband access networks in great detail, we briefly review recent progress and point to various ongoing research activities, including the design of energy-efficient “green” FiWi access networks, advanced survivability techniques, and integration of wireless and fiber optic sensors, towards realizing adaptable, dependable, and ecoconscious future-proof broadband access networks based on both wireless and shared passive fiber media. Furthermore, we discuss service, application, business, and operation related aspects, which motivate access technology to move into a substantially different direction in the long run than continued capacity provisioning. Given that most 4G cellular mobile network researches so far have been focusing on the achievable performance gains in the wireless front-end only without looking into the details of backhaul implementations and possible backhaul bottlenecks, we identify open key research challenges for FiWi broadband access networks. We explore ways of how they can be deployed across relevant economic sectors other than telecommunications per se, taking major paradigm shifts such as the Third Industrial Revolution, Energy Internet, smart grid, and explosion of mobile data traffic in today’s cellular networks into account.

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Koudelka, O. "Wireless broadband access for the home and mobile user [Guest Editorial]." IEEE Communications Magazine 38, no. 6 (June 2000): 126. http://dx.doi.org/10.1109/mcom.2000.846083.

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Greenspan, A., M. Klerer, J. Tomcik, R. Canchi, and J. Wilson. "IEEE 802.20: Mobile Broadband Wireless Access for the Twenty-First Century." IEEE Communications Magazine 46, no. 7 (July 2008): 56–63. http://dx.doi.org/10.1109/mcom.2008.4557043.

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Elmagzoub, M. A., Asadullah Shaikh, Abdullah Alghamdi, and Khairan Rajab. "A Review on MIMO Wireless Signals over Fibre for Next Generation Fibre Wireless (FiWi) Broadband Networks." Electronics 9, no. 12 (November 28, 2020): 2014. http://dx.doi.org/10.3390/electronics9122014.

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Next-generation access/mobile networks have set high standards in terms of providing wireless services at high data rates in order to keep up with the vast demands for other mobility and multiple services. Wireless-optical broadband access network (WOBAN) technology, also known as fibre-wireless (FiWi), has uncovered incredible opportunities for the future of next-generation networks because it gets the best of both domains: huge bandwidth provided by the optical fibre and high ubiquity of the wireless domain. The objective of FiWi networks is to integrate the high data rate and long reach provided by optical networks and the ubiquity and mobility of wireless networks, with the target to decrease their expense and complexity. Multiple-input–multiple-output (MIMO) is an inevitable technique for most of the new mobile/wireless networks that are driven by the huge data rates required by today’s users. Consequently, to construct any FiWi system for next-generation (NG) access/broadband networks, an MIMO technique has to be considered. This article presents a comprehensive, contemporary review of the latest subsystems, architectures and integrated technologies of MIMO wireless signals backhauling using optical fibre or fibre access networks, such as passive optical networks (PONs). An overview for FiWi, PONs and MIMO wireless systems is provided. In addition, advanced techniques of accommodating the MIMO wireless signals over optical fibre are explained and compared. Different types of wireless MIMO signals over fibre, such as 5G, WiFi and related transport technologies, are reviewed. Moreover, future research trends are also discussed.

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Abdullah Saeed, Rebin. "Performance Comparison of Handover mechanisms in mobile wireless communication networks for Broadband Wireless Access Systems." International Journal of Computer Communication and Informatics 2, no. 1 (May 29, 2020): 25–37. http://dx.doi.org/10.34256/ijcci2014.

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Mobility is the mobile communication characteristics which make it diverse and attractive for all. Wireless communication is now attractive to the whole world and provides the ability of users to communicate very active. Transferring the users from one radio network to another is accomplishing the IT. The process is called the handover process. The transfer takes place by adjusting the duration of the soft transfers, the area size and either by cell crossing or by deterioration in the signal quality of the current channel — the brief overview of handover, Handover in WiMAX and LTE, types of handover, handover types solutions, approaches used in literature are typically transfer parameters and I contemporary the convergent fact for continuance in the area of mobile and wireless communication Handover.

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Gbahabo, Paul Terna, and Oluseye Samuel Ajuwon. "MOBILE BROADBAND AND ECONOMIC GROWTH IN NIGERIA." Oradea Journal of Business and Economics 4, no. 1 (March 2019): 65–78. http://dx.doi.org/10.47535/1991ojbe061.

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The scale of diffusion of mobile wireless broadband technology and its transformational effect across all sectors of the economy cannot be over emphasised. It enables the creation of new business processes/product innovation, thereby boosting job creation, as well as raising economic growth and productivity. This suggests that the mobile broadband is a general-purpose technology capable of producing a protracted critical mass effect at a certain threshold of penetration. It is against this backdrop that this paper examines the impact of mobile broadband on economic growth in Nigeria. Using the Endogenous Growth Model, we employ ARDL Bounds Testing Approach and Toda Yamamoto Granger Causality test on quarterly data from 2001 to 2016, to estimate the growth effect of mobile broadband. The findings show that mobile broadband is impacting economic growth positively in the Nigerian economy. It is therefore imperative for policymakers to design policies that will increase access to broadband infrastructure to both the unserved and underserved. It is also imperative to enact policies and regulations that can stimulate the economic impact of mobile broadband technology by strengthening the capacity of the economy to fully absorb the transformational benefits and make productive use of it as a General-Purpose Technology.

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Frederiksen, John. "Broadband access strategies: financing and governance." info 16, no. 4 (June 3, 2014): 54–70. http://dx.doi.org/10.1108/info-01-2014-0005.

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Purpose – The purpose of this paper was to present a number of issues regarding broadband access strategies in the coming years with at least four different competing broadband access forms. Pricing, investment and financing in relation to these issues are presented. The developments of interconnection and Internet governance are also presented. Design/methodology/approach – Description of trends for demand and supply for broadband access and the challenges for financing of the necessary investments. Findings – The most probable outcome for the coming decade is that a broadband access strategy is very dependent on where you believe the saturation level for the demand of bandwidth from normal residential household will be. Wireline and mobile wireless solutions will probably mainly be complements. Furthermore, there is a challenge for the whole telecommunication sector in relation to financing the necessary investments, because several factors are forcing the profit level in the sector downwards. The ongoing merger of two different interconnection regimes has an impact on the economy for network operators. Finally, the challenge of how to govern the Internet is emphasized. Originality/value – The paper provides a new structure for how to analyse the challenges for the telecom operators regarding choice of access strategy, financing of investments and governance.

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Chen, Joy, and Lu-Tsou Yeh. "Optimization of Citizen Broadband Radio Service Frequency Allocation for Dynamic Spectrum Access System." December 2020 2, no. 4 (January 5, 2021): 143–48. http://dx.doi.org/10.36548/jsws.2020.4.001.

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With the increase in mobile broadband utilization, more spectrum release is recommended by the Federal Communications Commission for spectrum sharing under a three-tire system called Citizens Broadband Radio Service. The standardization, functional and operational necessities of this framework are defined by the Wireless Innovation Forum. If an unavoidable shipborne radar appears on the channel, the channel must be vacated by the lower tier users. The timing constraints on CBRS is also stringent. Wireless stations transmit short beacon frames termed as heartbeat signals. These signals consist of the wireless channel encryption data, Service Set Identifier (SSID) and other credential data. These signals also transmit commands to vacate a channel. The heartbeat interval, timing constraint and domain proxy features are analyzed in this paper. CBSD renunciation and spectrum acquisition is performed with the help of domain proxy based communication. The CBRS-SAS channel allocation algorithm is further investigated. The communication interoperability and network robustness can improved with the introduction of secondary SAS and secondary domain proxy respectively.

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K.Venkatesh, G., and P. V.Rao. "Performance analysis of a novel method for fast handovers in TDD and FDD for long term evolution." International Journal of Engineering & Technology 7, no. 1.9 (March 1, 2018): 115. http://dx.doi.org/10.14419/ijet.v7i1.9.9745.

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The LTE Long Term Evolution highly developed Technology, Handover is the essential function of the mobility of user in cellular networks in Time Division Duplex as well as Frequency Division Duplex. Handover is one of the essential that can affect the [QoS] Quality of Service with Capacity of Mobile Broadband Networks. Within mobile cellular network communication systems, a (spectrum) limited shared resource needs to be shared with all the users, so full duplex communication is achieved. This paper involves studying diverse Hand over delay parameters and also focus on reducing “Hard Handover delay” by minimizing interruption time, activation time, wireless channel accesses time as well as the wireless link transmission delay. Technique is developed in order to reduce the handover delay time in Time Division Duplex network which too reduces the wireless channel access time and the wireless link transmission delay. A novel handover algorithm is developed which would decreases the handover delay time and access time inside mobile network environment.Additional work may be conceded on to obtain enhanced performance and Quality of service in Time Division Duplex mobile network.

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Lakshmanan, M., P. S. Mallick, and L. Nithyanandan. "Joint Timing Synchronization and Channel Estimation Using Perfect Sequence in Uplink Time Domain Synchronous OFDMA." International Journal of Electronics and Telecommunications 62, no. 3 (September 1, 2016): 225–29. http://dx.doi.org/10.1515/eletel-2016-0030.

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AbstractTime Domain Synchronous Orthogonal Frequency Division Multiple Access (TDS-OFDMA) is used in mobile broadband wireless access scheme in uplink transmission. This leads to multiple user interference due to timing offset and frequency offset. In this paper, the effect of timing offset and channel estimation in mobile broadband system is analysed. Time-space two dimensional structure is used in TDS-OFDMA and perfect sequence is used for guard interval to achieve perfect timing synchronization and channel estimation for each user. Simulations are performed for timing synchronization and channel estimation using perfect sequence under Urban channel, Indoor Office B channel and HIPER LAN-A channel. Simulation results show that the timing synchronization is achieved and channel estimation performance using perfect sequence is better than CAZAC and PN Sequences.

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Wang, Weiwei, Changjia Chen, Yunbao Zeng, Zihua Guo, Wenchao Ma, and Xuemin Shen. "Unified Radio Network for Broadcasting and Broadband Wireless Access [Advances in Mobile Multimedia]." IEEE Communications Magazine 45, no. 8 (August 2007): 54–61. http://dx.doi.org/10.1109/mcom.2007.4290315.

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Chang, Jau-Yang, and Yu-Chen Lin. "Dynamically alternating power saving scheme for IEEE 802.16e mobile broadband wireless access systems." Journal of Communications and Networks 14, no. 2 (April 2012): 179–87. http://dx.doi.org/10.1109/jcn.2012.6253066.

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Konhäuser, Walter. "Broadband Wireless Access Solutions - Progressive Challenges and Potential Valueof Next Generation Mobile Networks." Wireless Personal Communications 37, no. 3-4 (May 23, 2006): 243–59. http://dx.doi.org/10.1007/s11277-006-9076-z.

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von Hugo, D., and N. Bayer. "Challenges for Wireless Mesh Networks to provide reliable carrier-grade services." Advances in Radio Science 9 (August 1, 2011): 377–82. http://dx.doi.org/10.5194/ars-9-377-2011.

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Abstract. Provision of mobile and wireless services today within a competitive environment and driven by a huge amount of steadily emerging new services and applications is both challenge and chance for radio network operators. Deployment and operation of an infrastructure for mobile and wireless broadband connectivity generally requires planning effort and large investments. A promising approach to reduce expenses for radio access networking is offered by Wireless Mesh Networks (WMNs). Here traditional dedicated backhaul connections to each access point are replaced by wireless multi-hop links between neighbouring access nodes and few gateways to the backbone employing standard radio technology. Such a solution provides at the same time high flexibility in both deployment and the amount of offered capacity and shall reduce overall expenses. On the other hand currently available mesh solutions do not provide carrier grade service quality and reliability and often fail to cope with high traffic load. EU project CARMEN (CARrier grade MEsh Networks) was initiated to incorporate different heterogeneous technologies and new protocols to allow for reliable transmission over "best effort" radio channels, to support a reliable mobility and network management, self-configuration and dynamic resource usage, and thus to offer a permanent or temporary broadband access at high cost efficiency. The contribution provides an overview on preliminary project results with focus on main technical challenges from a research and implementation point of view. Especially impact of mesh topology on the overall system performance in terms of throughput and connection reliability and aspects of a dedicated hybrid mobility management solution will be discussed.

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VAN HOUDT, B., C. BLONDIA, O. CASALS, and J. GARCÍA. "PERFORMANCE ANALYSIS OF A MAC PROTOCOL FOR BROADBAND WIRELESS ATM NETWORKS WITH QUALITY OF SERVICE PROVISIONING." Journal of Interconnection Networks 02, no. 01 (March 2001): 103–30. http://dx.doi.org/10.1142/s0219265901000282.

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This paper presents a Medium Access Control (MAC) protocol for broadband wireless LANs based on the ATM transfer mode, together with the evaluation of its performance in terms of throughput and access delay. Important characteristics of the MAC protocol are the way information between the Mobile Stations (MSs) and the Base Station (BS) is exchanged and the algorithm used to allocate the bandwidth in order to support the service categories. A detailed analytical evaluation, both on cell level and packet level, leads to an assessment of the efficiency and the access delay of the system.

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Paredes-Páliz, Diego F., Guillermo Royo, Francisco Aznar, Concepción Aldea, and Santiago Celma. "Radio over Fiber: An Alternative Broadband Network Technology for IoT." Electronics 9, no. 11 (October 27, 2020): 1785. http://dx.doi.org/10.3390/electronics9111785.

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Wireless broadband access networks have been positioning themselves as a good solution for manufacturers and users of IoT (internet of things) devices, due mainly to the high data transfer rate required over terminal devices without restriction of information format. In this work, a review of two Radio over Fiber strategies is presented. Both have excellent performance and even offer the possibility to extend wireless area coverage where mobile networks do not reach or the 802.11 network presents issues. Radio Frequency over Fiber (RFoF) and intermediate Frequency over Fiber (IFoF) are two transmission strategies compatible with the required new broadband services and both play a key role in the design of the next generation integrated optical–wireless networks, such as 5G and Satcom networks, including on RAU (Remote Antenna Unit) new functionalities to improve their physical dimensions, employing a microelectronic layout over nanometric technologies.

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Cosquer, François J. N., and Annie Ohayon-Dekel. "Mobility and Enterprise 2.0." International Journal of Interdisciplinary Telecommunications and Networking 1, no. 4 (October 2009): 1–15. http://dx.doi.org/10.4018/jitn.2009092801.

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The emergence of Web 2.0 and its rapid adoption by the corporate world, known as Enterprise 2.0, has radically modified access to tacit knowledge and significantly reduced business latency. Meanwhile, technology for wireless LAN and mobile communication, combined with advances in handsets, has allowed for superior quality of experience with acceptable productivity level. Combining mobility with Enterprise 2.0 is the next big step in evolution. This article presents the drivers for Enterprise 2.0 and the challenge of tapping tacit knowledge and, in parallel, the evolution of wireless and mobile technologies. The era of mobile broadband life is made possible, creating new ways of use and expectations for Millennials. The next business generation will be able to unleash the full potential of mobility and Enterprise 2.0. Three scenarios selected from different vertical domains—healthcare, education and emergency services—illustrate the benefits of mobility and Enterprise 2.0 in action. With the expected continued strong growth of wireless access, mobility support is one, if not the, key success factor for Enterprise 2.0.

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KIM, D. H. "Subchannel Multiplexing Scheme for Mobile Broadband Wireless Access Services in AMC-based OFDMA System." IEICE Transactions on Communications E88-B, no. 7 (July 1, 2005): 2810–18. http://dx.doi.org/10.1093/ietcom/e88-b.7.2810.

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Papathanasiou, Christos, Nikos Dimitriou, and Leandros Tassiulas. "Dynamic radio resource and interference management for MIMO–OFDMA mobile broadband wireless access systems." Computer Networks 57, no. 1 (January 2013): 3–16. http://dx.doi.org/10.1016/j.comnet.2012.07.014.

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MINOMO, MASAHIRO, and TATSURO MASAMURA. "PROSPECTS FOR MOBILE COMMUNICATION SYSTEMS AND KEY TECHNOLOGIES CAPABLE OF SUPPORTING EXPANDING MOBILE MULTIMEDIA SERVICES." Journal of Circuits, Systems and Computers 13, no. 02 (April 2004): 237–51. http://dx.doi.org/10.1142/s0218126604001404.

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The first commercial service of the 3rd generation (3G) mobile communication system, IMT-2000 (International Mobile Telecommunications), was launched in October 2001 in Japan. This is the first 3G service employing Wideband Code Division Multiple Access (W-CDMA) as its air interface between mobile terminals and base stations. This new system, 3G, is expected to accelerate the deployment of future mobile multimedia services, which substantially got started with the "i-mode" service in February 1999 in Japan. Research activities into future mobile communication systems capable of supporting a vastly expanded market for mobile multimedia services are underway worldwide. This paper describes the vision, service trends, and technical challenges of such future systems. Broadband packet wireless access, Variable Spreading Factor Orthogonal Frequency and Code Division Multiplexing (VSF-OFCDM), are promising candidates for realizing future mobile communication systems that provide higher transmission rates and capacity than 3G systems.

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Hu, Yi Hong, Guo Chu Shou, Zong Jue Qian, and Hao Xing Shen. "Research on Converged Access Network of WDM-PON and WiMAX." Applied Mechanics and Materials 58-60 (June 2011): 1583–89. http://dx.doi.org/10.4028/www.scientific.net/amm.58-60.1583.

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Fixed Mobile Convergence (FMC) provides a solution of the converged access network for wired and wireless network. PON and WiMAX are the typical representatives in fiber access network and broadband wireless access network, of which the convergence has great research value. The converged network of PON and WiMAX has the advantage of high-bandwidth, which can provide various kinds of broadband access services and has features of low cost and simple and flexible. There are a variety of system forms for PON technology, one of them with unique advantages is WDM-PON system. In WDM-PON systems, each service has exclusive transmission bandwidth, which makes the converged network of WDM-PON and WiMAX has much more advantages than any other PON network. This paper proposes a converged network model of WDM-PON and WiMAX, and focuses on the analysis of dynamic bandwidth allocation algorithm applicable to the converged network model; then does some simulation of this dynamic bandwidth allocation algorithm, proves that the algorithm has a good delay effect in overload conditions, and analyses the bandwidth rate taken by traffic flow of different service levels under different network load situations.

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Chuang, Ching Song, and Yong Jyun Chang. "Compact CPW-Fed Multiple Broadband Planar Monopole Antenna." Applied Mechanics and Materials 130-134 (October 2011): 1994–97. http://dx.doi.org/10.4028/www.scientific.net/amm.130-134.1994.

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This paper presents a kind of CPW-fed Pentagon-type multi-band planar monopole antenna. It provides an integrated wideband operating frequency band coverage from 900MHz of GSM to 10.6GHz UWB applications. This is the desirable antenna characteristic that is suitable for modern integrated mobile broadband wireless radio access applications. The proposed antenna was fabricated in practice with the FR4 print circuit board having 1.6 mm substrate thickness and dielectric constant of 4.4, tangent loss constant of 0.02. The measurement results show the success of the proposed planar monopole antenna. The detailed antenna design parameters are given in this paper. The characteristics of this type antenna, wide in bandwidth, low in profile, light in weight and small in size and single layer fabrication can be beneficial in the future integration with other microwave circuit of wireless systems.

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Wu, Yongli, and Jingliang Chen. "Realization of Mobile Education Resource Sharing Method Based on Wireless Broadband Connection." Scientific Programming 2021 (September 6, 2021): 1–7. http://dx.doi.org/10.1155/2021/4018500.

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Educational resource sharing among students is always an essential component for the development of education level. With the progress of digital and communication networks among institutions, the use and sharing of high-grade educational resources can reach a new level. This paper proposes a new platform for mobile educational resource prediction and sharing via wireless broadband access technology. The architecture of the resource sharing system comprises resource, management, and service layers. An evaluation index system is established to assess the quality of the resource, and a detailed description of the resource assessment methods is presented. Moreover, the social impacts on the allocation of resources and similarities between the social metrics such as response time, success rate, and resource acquisition were investigated. The system has the potential to provide a high success rate and low response time. The system proposed in the paper will stimulate teamwork between teaching groups and increase the ability of resource sharing and optimization more comprehensively.

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Milovanovic, Dragorad, Zoran Bojkovic, Madhavsingh Indoonundon, and Tulsi Pawan Fowdur. "5G Low-latency Communication in Virtual Reality services: Performance Requirements and Promising Solutions." WSEAS TRANSACTIONS ON COMMUNICATIONS 20 (July 9, 2021): 77–81. http://dx.doi.org/10.37394/23204.2021.20.10.

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This work explores low-latency communication enabled by the Fifth Generation of mobile networks (5G) and its integration in emerging virtual reality (VR) applications. Mobile VR is at the crossroad between mobile broadband (eMBB) and ultra-reliable and low-latency communication (uRLLC) services. The current trends in wireless multimedia communication are introduced. A review of mobile VR and haptics requirements is made and end-to-end (E2E) latency components in uRLLC downlink physical layer are described. Moreover, non-orthogonal multiple access (NOMA) in short-packet downlink transmission is discussed. It is pointed out that NOMA is a promising technology for realizing massive mobile connectivity and more comprehensive research is required to better understand its suitability for VR applications.

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Yerrapragada, Anil Kumar, and Brian Kelley. "On the Application of K-User MIMO for 6G Enhanced Mobile Broadband." Sensors 20, no. 21 (November 2, 2020): 6252. http://dx.doi.org/10.3390/s20216252.

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This paper presents a high-throughput wireless access framework for future 6G networks. This framework, known as K-User MIMO, facilitates all-to-all communication between K access points and K mobile devices. For such a network, we illustrate the demodulation of K2 independent data streams through a new interference cancellation beamforming algorithm that improves spectral efficiency compared to massive MIMO. The paper derives a multi-user Shannon Capacity formula for K-User MIMO when K is greater than or equal to 3. We define an Orthogonal Frequency Division Multiplexing (OFDM) frame structure that demonstrates the allocation of time-frequency resources to pilot signals for channel estimation. The capacity formula is then refined to include realistic pilot overheads. We determine a practical upper-bound for MIMO array sizes that balances estimation overhead and throughput. Lastly, simulation results show the practical capacity in small cell geometries under Rayleigh Fading conditions, with both perfect and realistic channel estimation.

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Laroia, R., S. Uppala, and Junyi Li. "An integrated approach based on cross-layer optimization - Designing a mobile broadband wireless access network." IEEE Signal Processing Magazine 21, no. 5 (September 2004): 20–28. http://dx.doi.org/10.1109/msp.2004.1328085.

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Susilawati, Hesti, Widhiatmoko Widhiatmoko, and Dimass Noly Mardhiko. "Perencanaan Jaringan Akses Mobile Wimax (Worldwide Interoperability For Microwave Access) 2,5 Ghz Untuk Wilayah DKI Jakarta." JURNAL INFOTEL - Informatika Telekomunikasi Elektronika 3, no. 1 (May 10, 2011): 37. http://dx.doi.org/10.20895/infotel.v3i1.87.

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Standar IEEE 802.16e yang dikenal dengan mobile WiMAX adalah standar broadband wireless access (BWA) yang beroperasi pada frekuensi 2 - 6 GHz. Standar ini merupakan pengembangan dari standar WiMAX sebelumnya untuk mendukung mobilitas pengguna. Pada penelitian ini, penulis melakukan perhitungan untuk memprediksi kebutuhan bandwidth untuk pelanggan mobile WiMAX di wilayah DKI Jakarta untuk jangka waktu tiga tahun sejak WiMAX diimplementasikan. Kebutuhan bandwidth ini akan digunakan untuk menentukan jumlah base station yang dibutuhkan dari sisi kapasitas. Penulis juga melakukan perhitungan jumlah base station dari sisi coverage menggunakan persamaan Erceg. Dari hasil perhitungan tersebut, dapat disimpulkan bahwa pada tiga tahun pertama penetrasi WiMAX di Jakarta, kebutuhan jumlah base station dari sisi coverage lebih besar dari pada perhitungan dari sisi kapasitas.

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Zou, Chi Jia. "Study of Access Algorithms in Wireless Network." Advanced Materials Research 129-131 (August 2010): 1286–90. http://dx.doi.org/10.4028/www.scientific.net/amr.129-131.1286.

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The measure to improve the performance of the wireless network channel is of great significance to the building in the wireless network. Due to IPv6 Agreement is the agreement for the next generation network and the core of it, IPHC header compression technology provides IPv6 basic headers and expanding headers with a good support, so we adopt IPHC header compression scheme which groups the data that need to transmitting, introduce retransmission mechanism and header request mechanism to make IPHC have much compression effect on headers. But IPHC header compression scheme is hard on signal channel, it required that loss rate of transportation link is a little lower. In order to let IPHC better adapt to wireless link, compression based on link state is offered: Using simple portioned Markov model to check channel error rate, adopting RTS/CTS access mechanism to search for link state. Apply OPNET simulation software to imitate and finally achieve the desired target. In past two decades, computer network got rapid development, with the application of computers wider and wider. But because of being limited by areas and time, users couldn’t surf on the Internet, communicate with each other, and transport messages at any time and at any place. In this case, the wireless network developed, wireless network technology also produced therewith. Computer wireless network technology included IEEE802.11 collection [1], bluetooth technology, infrared technology, and broadband wireless technology afterwards and so on. Wireless communication technology contained CDMA, GSM, etc [2-5]. According to access ways, wireless access technology was divided into fixed wireless access technology and mobile wireless access technology with many small parts. Wireless access system consisted of wireless base station, wireless base station controller, operation maintenance center and user units. User units which contained single units and multiunits were connected directly with user terminals. Base station, which provided signal-sending and signal-receiving services for users in one district, was controlled by the controller called center station facility to provide an interface with base station side and operation maintenance center, wireless signal channel control and base station monitor, complete the connection of exchanges and routers. Operation control centre is responsible for operating and maintaining wireless access system machines and managing daily network operations.

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HOSSAIN, EKRAM, and VIJAY K. BHARGAVA. "LINK-STATE AWARE DYNAMIC TRAFFIC SCHEDULING FOR PROVIDING PREDICTIVE QoS IN WIRELESS MOBILE MULTIMEDIA NETWORKS." Journal of Interconnection Networks 01, no. 03 (September 2000): 221–45. http://dx.doi.org/10.1142/s0219265900000147.

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The performance of a centralized traffic priority based dynamic burst-level cell scheduling scheme is investigated in a correlated fading channel. The scheduling scheme is designed for the transmission of multiservice traffic over TDMA (Time Division Multiple Access)/TDD (Time Division Duplex) channels in a WATM (Wireless ATM) network. In this scheme, the number of slots allocated to a VC (Virtual Circuit) during a frame-time is changed dynamically depending on the traffic type, system traffic load, TOE (Time of Expiry) value of the data burst and data burst length. While allocating bandwidth, the channel error status is also taken into consideration. SR-ARQ (Selective Repeat - Automatic Repeat Request)-based link-level error control is assumed for all the traffic types in a multiservice traffic environment. The performance of the proposed scheme under correlated Rayleigh fading is evaluated using computer simulation for realistic voice, video and data traffic models and the QoS (Quality of Service) requirements of different traffic classes in a wireless mobile network. Simulation results show that the proposed scheduling framework can provide reasonably high channel utilization with predictive QoS guarantee in a multiservice traffic environment. The channel utilization and the perceived QoS for different services is highly affected by the traffic burstiness of the corresponding traffic type. Such a scheme can result in an energy efficient TDMA/TDD medium access control protocol for broadband wireless access.

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Wang, Ju, and Jonathan Liu. "Interference Minimization and Dynamic Sub-Carrier Allocation in Broadband Wireless Networks." International Journal of Wireless Networks and Broadband Technologies 3, no. 3 (July 2014): 1–15. http://dx.doi.org/10.4018/ijwnbt.2014070101.

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Efficient channel allocation is the key to fully exploit the signal diversity presented in the multi-carrier physical link in today's broadband wireless access networks. There are mounting evidences that the 4G and future-generation systems will take advantage of two opposite types of access methods, one using centralized control method and the other using a distributed approach. The authors study the distributed channel allocation problem in this article, formulated as a non-linear optimization problem, in broadband wireless networks. The signal properties of the multi-carrier radio interface in 3G and 4G networks are discussed to comprehend the complexity of the channel allocation problem. The authors propose a novel distributed heuristic algorithm based on the particle-swarm searching method. The distributed approach allows user stations to quickly switch sub-carriers with minimum intervention from the base station. The work presented in this paper shows an effective method to allocate a large number of channels while minimizing the possible interference. Extensive numerical experiments are conducted to evaluate several versions of distributed channel allocation algorithm for these new problem settings. The authors' results show that PSO-based method converges quickly in all our numerical experiments despite the high-dimensional searching space. The proposed technologies will eventually allow the true mobile steaming video/audio experience anywhere and anytime, which will have the huge impact to business, entertainment and people's quality of life.

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Piqueras, M. A., G. Grosskopf, B. Vidal, J. Herrera, J. M. Martinez, P. Sanchis, V. Polo, et al. "Corrections to “Optically Beamformed Beam-Switched Adaptive Antennas for Fixed and Mobile Broadband Wireless Access Networks”." IEEE Transactions on Microwave Theory and Techniques 54, no. 7 (July 2006): 3156. http://dx.doi.org/10.1109/tmtt.2006.877053.

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You, Ilsun, Jong-Hyouk Lee, Yoshiaki Hori, and Kouichi Sakurai. "Enhancing MISP with Fast Mobile IPv6 Security." Mobile Information Systems 7, no. 3 (2011): 271–83. http://dx.doi.org/10.1155/2011/148959.

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The Mobile Broadband Association has developed the MIS and MISAUTH protocols as link-layer fast authentication protocols. A combination of MIS and MISAUTH protocols, called as MISP, provides secure and fast connection for a wireless access network, but it has been reported that MISP creates a weak session key and suffers from a denial-of-service attack. In addition, a transaction with an authentication server that is required for every authentication is considered as a delay factor during handovers. In this paper, we present an improvement of MISP that utilizes the fast handover approach of Fast Mobile IPv6 and minimizes an involvement of the authentication server while eliminating identified security drawbacks of MISP. The formal security analysis is performed to verify the correctness of the proposed scheme. Moreover, the handover performance of the proposed scheme is compared with an existing scheme.

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Bohnert, Thomas Michael, Marco Castrucci, Nicola Ciulli, Giada Landi, Ilaria Marchetti, Cristina Nardini, Bruno Sousa, Pedro Neves, and Paulo Simoes. "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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Shi, Chun Yang. "Application of Wireless Communication Technology Based on Visual C + + in Smart Home." Applied Mechanics and Materials 651-653 (September 2014): 2008–12. http://dx.doi.org/10.4028/www.scientific.net/amm.651-653.2008.

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The smart home is a kind of brand-new life concept, with the development of science and technology, people’s pursuit of quality of life is more and more high. The living concept "Safe and comfort, health and environmental protection, natural and harmony, people-oriented, efficient and convenient, personalized" has been received by most. With the rapid development of 4G networks, the Internet access technology based on mobile terminal and the family high-speed broadband network connectivity built a high-speed communication platform for the control and application of intelligent household life, and the high-speed platform created the condition for developing the richer remote intelligent household control application. Smart phones carry-on become bonds connecting smart home system and high-speed mobile communications platform, and remote control for smart phone will bring our life into a new field.

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R Shankar, Arathi, Raghavendra G, and V. Sambasiva Rao. "HARQ Implementation for Efficient MAC to MAC Video Streaming over Mobile WiMAX." INTERNATIONAL JOURNAL OF MANAGEMENT & INFORMATION TECHNOLOGY 5, no. 1 (August 15, 2013): 455–69. http://dx.doi.org/10.24297/ijmit.v5i1.4489.

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IEEE 802.16e is the standard for Mobile WiMAX which was introduced by the IEEE committee to provide broadband access in rural and urban areas over fixed wireless channels. Mobile WiMAX is an enhanced version of IEEE 802.16 standard with mobility support. There are lots of challenges involved in the service provided by the Mobile WiMAX. Efficient data transfer between different layers of mobile WiMAX is one of the major research issues. In this work HARQ (Hybrid Automatic Repeat Request) technique is implemented in Qualnet environment for an efficient transmission of video streaming across PHY(Physical) and MAC(Medium Access Control) layer of mobile WiMAX (Worldwide Interoperability for Microwave Access). HARQ utilizes both FEC (Forward Error Correction) an d ARQ (Automatic Repeat Request) techniques to reduce the delay, jitter and to increase throughput efficiently under prescribed quality of service constraint. Different Scheduling schemes and cross layer approaches that support mobile WiMAX are analysed. mmSIR scheduler is used in this work since it allocates resources priority wise. Diffferent network quality parameters like end to end delay,average jitter,and average throughput have been analysed by using existing ARQ and implemented HARQ techniques.Both ARQ and HARQ techniques are compared for a video application.

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Moiron, Sandro, Rouzbeh Razavi, Martin Fleury, and Mohammed Ghanbari. "Intelligent Bandwidth Allocation of IPTV Streams with Bitstream Complexity Measures." International Journal of Handheld Computing Research 4, no. 3 (July 2013): 41–62. http://dx.doi.org/10.4018/jhcr.2013070103.

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IPTV video services are increasingly being considered for delivery to mobile devices over broadband wireless access networks. The IPTV streams or channels are multiplexed together for transport across an IP core network prior to distribution across the access network. According to the type of access network, prior bandwidth constraints exist that restrict the multiplex data-rate. This paper presents a bandwidth allocation scheme based on content complexity to equalize the overall video quality of the IPTV sub-streams, in effect a form of statistical multiplexing. Bandwidth adaptation is achieved through a bank of bit-rate transcoders. Complexity metrics serve to estimate the appropriate bandwidth share for each stream, prior to distribution over a wireless or ADSL access network. These metrics are derived after entropy decoding of the input compressed bit-streams, without the delay resulting from a full decode. Fuzzy-logic control serves to adjust the balance between spatial and temporal coding complexity. The paper examines constant and varying bandwidth scenarios. Experimental results show a significant overall gain in video quality in comparison to a fixed bandwidth allocation.

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Petrov, Ivan, and Toni Janevski. "5G Mobile Technologies and Early 6G Viewpoints." European Journal of Engineering Research and Science 5, no. 10 (October 14, 2020): 1240–46. http://dx.doi.org/10.24018/ejers.2020.5.10.2169.

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Design of each successor mobile technology assures improved and advanced functionality features compared to its predecessor. Machine Learning and generally Artificial Intelligence (AI) is becoming necessity for further expansion of the beyond 5G mobile world. AI-assisted IoT services, data collection, analytics and storage should become native in the beyond 5G era. 5G introduces New Radio (NR) in sub-6 GHz bands and also in mmWave bands above 24 GHz, network virtualization and softwarization, which means that Next Generation Core and 5G NR access network are built by using different functions in split user and control planes that introduces the network slicing approach. Enhanced Mobile Broadband (eMBB), massive Machine Type Communication (mMTC) and Ultra-Reliable Low-Latency Communication (URLLC), that are provided via separate network slices as logically separated network partitions are the key 5G services that constantly will increase the traffic volume and the number of connected devices. Terahertz and visible light communication and fundamental technologies like compressed sensing theory, new channel coding, large-scale antenna, flexible spectrum usage, AI-based wireless communication, special technical features as Space-Air-Ground-Sea integrated communication and wireless tactile network are few of the novelties that are expected to become a common network standard available beyond 2030.

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Rafsyam, Yenniwarti, Milda Yuliza, and Lifwarda Lifwarda. "Aplikasi WiMAX." Elektron : Jurnal Ilmiah 1, no. 1 (September 10, 2009): 67–74. http://dx.doi.org/10.30630/eji.1.1.11.

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WiMAX is Broadband Wireless Acces (BWA) technology evolution with interactive fitur. WiMAX not only have issue about data speed problem but also about open standard. It means, communications between WiMax instruments between some different vendors are not proprietary. WimAX orientations are not only for fixed market, but also for portable and mobile market. WiMAX with high speed data (up to 70 MBps) is suitable to apply in last mile broadband connections, backhaul and high speed enterprise.

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Matera, Andrea, Rahif Kassab, Osvaldo Simeone, and Umberto Spagnolini. "Non-Orthogonal eMBB-URLLC Radio Access for Cloud Radio Access Networks with Analog Fronthauling." Entropy 20, no. 9 (September 2, 2018): 661. http://dx.doi.org/10.3390/e20090661.

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This paper considers the coexistence of Ultra Reliable Low Latency Communications (URLLC) and enhanced Mobile BroadBand (eMBB) services in the uplink of Cloud Radio Access Network (C-RAN) architecture based on the relaying of radio signals over analog fronthaul links. While Orthogonal Multiple Access (OMA) to the radio resources enables the isolation and the separate design of different 5G services, Non-Orthogonal Multiple Access (NOMA) can enhance the system performance by sharing wireless and fronthaul resources. This paper provides an information-theoretic perspective in the performance of URLLC and eMBB traffic under both OMA and NOMA. The analysis focuses on standard cellular models with additive Gaussian noise links and a finite inter-cell interference span, and it accounts for different decoding strategies such as puncturing, Treating Interference as Noise (TIN) and Successive Interference Cancellation (SIC). Numerical results demonstrate that, for the considered analog fronthauling C-RAN architecture, NOMA achieves higher eMBB rates with respect to OMA, while guaranteeing reliable low-rate URLLC communication with minimal access latency. Moreover, NOMA under SIC is seen to achieve the best performance, while, unlike the case with digital capacity-constrained fronthaul links, TIN always outperforms puncturing.

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Khatri, Marzook. "Network Amelioration, AI Automation and Future Integration in Wireless Networks." International Journal for Research in Applied Science and Engineering Technology 9, no. 8 (August 31, 2021): 2607–13. http://dx.doi.org/10.22214/ijraset.2021.37835.

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Abstract: The deployment of 5G mobile communication networks is just getting started right now. There are numerous technologies available today, each capable of fulfilling activities such as enabling voice traffic via voice over IP (VoIP), providing broadband data access in mobile environments, and so on. However, there is a pressing need to implement technology that can bring all of these systems together into a single unified system. Because it is all about smoothly integrating terminals, networks, and applications, 8G presents a solution to this dilemma. In this work, an attempt is made to provide a study of various cellular technologies, such as 4G, 5G, 6G, 7G, and FG, as well as a detailed comparison between them. With the introduction of network virtualization and the implementation of 5G/IoT, mobile networks will become more complicated and offer more diverse services. This raises concerns about a considerable increase in the workload of network operations. Meanwhile, artificial intelligence (AI) is advancing rapidly and is projected to alleviate human resource shortages in a variety of industries. Similarly, the mobile industry is gaining traction in the application of artificial intelligence (AI) to network operations in order to improve the efficiency of mobile network operations. This paper will address the idea of using AI technology to network operations and will give various use examples to demonstrate that AI-driven network operations have a bright future. Keywords: 5G & 6G networks, Artificial Intelligence, Next generation network, Future Advancement.

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Chiariotti, Federico, Israel Leyva-Mayorga, Čedomir Stefanović, Anders E. Kalør, and Petar Popovski. "Spectrum Slicing for Multiple Access Channels with Heterogeneous Services." Entropy 23, no. 6 (May 28, 2021): 686. http://dx.doi.org/10.3390/e23060686.

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Wireless mobile networks from the fifth generation (5G) and beyond serve as platforms for flexible support of heterogeneous traffic types with diverse performance requirements. In particular, the broadband services aim for the traditional rate optimization, while the time-sensitive services aim for the optimization of latency and reliability, and some novel metrics such as Age of Information (AoI). In such settings, the key question is the one of spectrum slicing: how these services share the same chunk of available spectrum while meeting the heterogeneous requirements. In this work we investigated the two canonical frameworks for spectrum sharing, Orthogonal Multiple Access (OMA) and Non-Orthogonal Multiple Access (NOMA), in a simple, but insightful setup with a single time-slotted shared frequency channel, involving one broadband user, aiming to maximize throughput and using packet-level coding to protect its transmissions from noise and interference, and several intermittent users, aiming to either to improve their latency-reliability performance or to minimize their AoI. We analytically assessed the performances of Time Division Multiple Access (TDMA) and ALOHA-based schemes in both OMA and NOMA frameworks by deriving their Pareto regions and the corresponding optimal values of their parameters. Our results show that NOMA can outperform traditional OMA in latency-reliability oriented systems in most conditions, but OMA performs slightly better in age-oriented systems.

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Jeong, Gye-Taek, Sunho Choi, Kyoung-hak Lee, and Woo-Su Kim. "Low-Profile Dual-Wideband MIMO Antenna with Low ECC for LTE and Wi-Fi Applications." International Journal of Antennas and Propagation 2014 (2014): 1–6. http://dx.doi.org/10.1155/2014/158028.

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This paper presents a low-profile dual-wideband multiple input multiple output (MIMO) antenna with low envelop correlation coefficient (ECC) for long-term evolution (LTE) and wireless fidelity (Wi-Fi) applications. The antenna covers LTE band 7 and Wi-Fi as well as wireless broadband (Wibro) and Worldwide Interoperability for Microwave Access (WiMax) (except for the 3.5-GHz band). To aid with integration of a practical mobile terminal, the MIMO antenna elements are placed at appropriate locations by analyzing the surface current distribution and without using any additional isolation techniques. The measured bandwidths with reflection coefficients of <−10 dB are 36.8% in the range 2.02–2.93 GHz and 23.4% in the range 5.10–6.45 GHz. Isolation is satisfied to be >20 dB in the operating frequency ranges of both LTE band 7 and Wi-Fi. Additionally, the calculated ECC is in the range0.005<ρ<0.025, which is considerably lower than theρ<0.5required for MIMO applications. The measured radiation patterns are appropriate for mobile terminals, and omnidirectional radiation patterns are obtained.

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Arafat, Omar, and Mark A. Gregory. "Efficiency Evaluation for Femtocell Spectrum Access in LTE-Advanced." International Journal of Information, Communication Technology and Applications 1, no. 1 (March 9, 2015): 96–111. http://dx.doi.org/10.17972/ajicta20151114.

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Femtocells are considered one of the ultimate solutions for the ever increasing demand in LTE-Advance. Recently, wireless industries have resorted to femtocell networks in order to enhance indoor coverage and quality of service since macro-antennas fail to reach these objectives. In enabling indoor home or enterprise users with mobile broadband solutions, role of femtocells are crucially important. While considering low cost solutions for higher coverage and data rate, femtocells apparently have one of the best potentials for indoor users. Due to the dense self-deployment of femtocells in a limited area, serious inter-femtocell interference (IFI) may cause, which consequently results in severe performance degradation. To mitigate the IFI and utilize spectrum resource more efficiently, this paper proposes a cluster based femtocell deployments along with a capacity based cognitive resource allocation scheme .Three different channel configurations in a hybrid access femtocell network are considered for performance analysis. The results of a performance analysis of the cluster based femtocell configurations in a priority based users’ network are presented.

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Journal articles on the topic 'Mobile broadband wireless access'

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