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Publisher: Institute of Electrical and Electronics Engineers (IEEE)   (Total: 175 journals)

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Aerospace and Electronic Systems, IEEE Transactions on     Hybrid Journal   (Followers: 59, SJR: 1.377, h-index: 78)
Affective Computing, IEEE Transactions on     Hybrid Journal   (Followers: 9, SJR: 1.967, h-index: 8)
Autonomous Mental Development, IEEE Transactions on     Hybrid Journal   (Followers: 5)
Bell Labs Technical J.     Hybrid Journal   (Followers: 8, SJR: 0.882, h-index: 22)
Biomedical Engineering, IEEE Reviews in     Full-text available via subscription   (Followers: 15, SJR: 0.592, h-index: 10)
Biomedical Engineering, IEEE Transactions on     Hybrid Journal   (Followers: 12, SJR: 0.789, h-index: 107)
Broadcasting, IEEE Transactions on     Hybrid Journal   (Followers: 5, SJR: 1.95, h-index: 49)
Canadian J. of Electrical and Computer Engineering     Full-text available via subscription   (Followers: 4)
China Communications     Full-text available via subscription   (Followers: 2, SJR: 0.207, h-index: 5)
Communications and Networks, J. of     Hybrid Journal   (Followers: 3, SJR: 0.418, h-index: 21)
Components, Packaging and Manufacturing Technology, IEEE Transactions on     Hybrid Journal   (Followers: 11, SJR: 0.535, h-index: 8)
Computational Intelligence and AI in Games, IEEE Transactions on     Hybrid Journal   (Followers: 9)
Computer     Full-text available via subscription   (Followers: 31)
Computing in Science & Engineering     Full-text available via subscription   (Followers: 11, SJR: 0.706, h-index: 34)
Control Systems     Hybrid Journal   (Followers: 21)
Embedded Systems Letters, IEEE     Hybrid Journal   (Followers: 18)
Emerging and Selected Topics in Circuits and Systems     Hybrid Journal   (Followers: 4)
Geoscience and Remote Sensing, IEEE Transactions on     Hybrid Journal   (Followers: 20, SJR: 2.206, h-index: 125)
Haptics, IEEE Transactions on     Hybrid Journal   (Followers: 4, SJR: 0.864, h-index: 15)
IEEE Access     Open Access   (Followers: 3)
IEEE Aerospace and Electronic Systems Magazine     Full-text available via subscription   (Followers: 40, SJR: 0.434, h-index: 32)
IEEE Annals of the History of Computing     Full-text available via subscription   (Followers: 9, SJR: 0.306, h-index: 11)
IEEE Antennas and Propagation Magazine     Hybrid Journal   (Followers: 14, SJR: 0.898, h-index: 52)
IEEE Antennas and Wireless Propagation Letters     Hybrid Journal   (Followers: 13, SJR: 1.551, h-index: 46)
IEEE Circuits and Systems Magazine     Full-text available via subscription   (Followers: 22, SJR: 0.987, h-index: 28)
IEEE Communications Letters     Hybrid Journal   (Followers: 16, SJR: 1.371, h-index: 90)
IEEE Communications Magazine     Full-text available via subscription   (Followers: 22, SJR: 4.919, h-index: 130)
IEEE Communications Surveys & Tutorials     Hybrid Journal   (Followers: 9, SJR: 5.903, h-index: 27)
IEEE Computational Intelligence Magazine     Full-text available via subscription   (Followers: 10, SJR: 2.329, h-index: 22)
IEEE Computer Architecture Letters     Hybrid Journal   (Followers: 15, SJR: 0.444, h-index: 12)
IEEE Computer Graphics and Applications     Full-text available via subscription   (Followers: 9, SJR: 0.917, h-index: 57)
IEEE Consumer Electronics Magazine     Full-text available via subscription   (Followers: 11)
IEEE Control Systems Magazine     Full-text available via subscription   (Followers: 21, SJR: 1.665, h-index: 67)
IEEE Design & Test     Full-text available via subscription   (Followers: 13)
IEEE Distributed Systems Online     Full-text available via subscription   (Followers: 5)
IEEE Electrical Insulation Magazine     Full-text available via subscription   (Followers: 8, SJR: 0.792, h-index: 36)
IEEE Electromagnetic Compatibility Magazine     Full-text available via subscription   (Followers: 2)
IEEE Electron Device Letters     Full-text available via subscription   (Followers: 5, SJR: 1.859, h-index: 98)
IEEE Engineering in Medicine and Biology Magazine     Full-text available via subscription   (Followers: 5)
IEEE Engineering Management Review     Full-text available via subscription   (Followers: 9, SJR: 0.102, h-index: 9)
IEEE Geoscience and Remote Sensing Letters     Hybrid Journal   (Followers: 15, SJR: 1.221, h-index: 40)
IEEE Industrial Electronics Magazine     Full-text available via subscription   (Followers: 15, SJR: 2.804, h-index: 20)
IEEE Industry Applications Magazine     Full-text available via subscription   (Followers: 5, SJR: 0.575, h-index: 33)
IEEE Instrumentation & Measurement Magazine     Full-text available via subscription   (Followers: 16, SJR: 0.237, h-index: 24)
IEEE Intelligent Systems     Full-text available via subscription   (Followers: 22, SJR: 1.721, h-index: 71)
IEEE Internet Computing     Full-text available via subscription   (Followers: 12, SJR: 1.377, h-index: 70)
IEEE J. of Biomedical and Health Informatics     Hybrid Journal   (Followers: 8)
IEEE J. of Emerging and Selected Topics in Power Electronics     Hybrid Journal   (Followers: 9)
IEEE J. of Oceanic Engineering     Hybrid Journal   (Followers: 5, SJR: 0.66, h-index: 58)
IEEE J. of Quantum Electronics     Hybrid Journal   (Followers: 15, SJR: 1.238, h-index: 92)
IEEE J. of Selected Topics in Quantum Electronics     Hybrid Journal   (Followers: 6, SJR: 2.409, h-index: 104)
IEEE J. of Selected Topics in Signal Processing     Hybrid Journal   (Followers: 14, SJR: 2.967, h-index: 36)
IEEE J. of Solid-State Circuits     Full-text available via subscription   (Followers: 12, SJR: 5.021, h-index: 133)
IEEE J. of the Electron Devices Society     Open Access   (Followers: 2)
IEEE J. of Translational Engineering in Health and Medicine     Open Access   (Followers: 2)
IEEE J. on Selected Areas in Communications     Hybrid Journal   (Followers: 6, SJR: 4.166, h-index: 155)
IEEE Latin America Transactions     Full-text available via subscription   (Followers: 1, SJR: 0.242, h-index: 5)
IEEE Micro     Full-text available via subscription   (Followers: 4, SJR: 2.127, h-index: 61)
IEEE Microwave and Wireless Components Letters     Hybrid Journal   (Followers: 7, SJR: 2.302, h-index: 81)
IEEE Microwave Magazine     Full-text available via subscription   (Followers: 11, SJR: 0.911, h-index: 35)
IEEE Multimedia     Full-text available via subscription   (Followers: 7, SJR: 0.639, h-index: 43)
IEEE Network     Full-text available via subscription   (Followers: 11, SJR: 2.363, h-index: 73)
IEEE Pervasive Computing     Full-text available via subscription   (Followers: 11, SJR: 1.138, h-index: 62)
IEEE Photonics Technology Letters     Hybrid Journal   (Followers: 4, SJR: 1.469, h-index: 102)
IEEE Potentials     Full-text available via subscription   (Followers: 2, SJR: 0.134, h-index: 17)
IEEE Power and Energy     Full-text available via subscription   (Followers: 11, SJR: 1.185, h-index: 41)
IEEE Power Electronics Magazine     Full-text available via subscription   (Followers: 5)
IEEE Revista Iberoamericana de Tecnologias del Aprendizaje     Hybrid Journal   (Followers: 1)
IEEE Robotics & Automation Magazine     Full-text available via subscription   (Followers: 19, SJR: 1.571, h-index: 44)
IEEE Security & Privacy Magazine     Full-text available via subscription   (Followers: 14, SJR: 0.824, h-index: 39)
IEEE Sensors J.     Hybrid Journal   (Followers: 30, SJR: 0.667, h-index: 49)
IEEE Signal Processing Letters     Hybrid Journal   (Followers: 15, SJR: 1.587, h-index: 74)
IEEE Signal Processing Magazine     Full-text available via subscription   (Followers: 30, SJR: 2.467, h-index: 98)
IEEE Software     Full-text available via subscription   (Followers: 31, SJR: 1.255, h-index: 67)
IEEE Spectrum     Full-text available via subscription   (Followers: 26, SJR: 0.189, h-index: 42)
IEEE Systems J.     Hybrid Journal   (Followers: 6, SJR: 0.674, h-index: 14)
IEEE Technology and Society Magazine     Full-text available via subscription   (Followers: 4, SJR: 0.243, h-index: 15)
IEEE Transactions on Advanced Packaging     Full-text available via subscription   (Followers: 5)
IEEE Transactions on Antennas and Propagation     Full-text available via subscription   (Followers: 10, SJR: 2.102, h-index: 108)
IEEE Transactions on Applied Superconductivity     Hybrid Journal   (Followers: 1, SJR: 0.515, h-index: 49)
IEEE Transactions on Audio, Speech, and Language Processing     Hybrid Journal   (Followers: 12)
IEEE Transactions on Automatic Control     Hybrid Journal   (Followers: 22, SJR: 5.459, h-index: 162)
IEEE Transactions on Automation Science and Engineering     Full-text available via subscription   (Followers: 8, SJR: 1.389, h-index: 30)
IEEE Transactions on Biomedical Circuits and Systems     Hybrid Journal   (Followers: 5, SJR: 1.508, h-index: 25)
IEEE Transactions on Circuits and Systems for Video Technology     Hybrid Journal   (Followers: 4, SJR: 1.835, h-index: 115)
IEEE Transactions on Circuits and Systems I: Regular Papers     Hybrid Journal   (Followers: 9, SJR: 1.803, h-index: 59)
IEEE Transactions on Circuits and Systems II: Express Briefs     Hybrid Journal   (Followers: 9)
IEEE Transactions on Cloud Computing     Hybrid Journal   (Followers: 6)
IEEE Transactions on Communications     Hybrid Journal   (Followers: 8, SJR: 2.696, h-index: 141)
IEEE Transactions on Components and Packaging Technologies     Full-text available via subscription   (Followers: 8)
IEEE Transactions on Computational Social Systems     Full-text available via subscription  
IEEE Transactions on Computer-Aided Design of Integrated Circuits and Systems     Hybrid Journal   (Followers: 4, SJR: 1.185, h-index: 78)
IEEE Transactions on Computers     Hybrid Journal   (Followers: 16, SJR: 1.292, h-index: 75)
IEEE Transactions on Consumer Electronics     Hybrid Journal   (Followers: 13, SJR: 0.832, h-index: 63)
IEEE Transactions on Control Systems Technology     Hybrid Journal   (Followers: 17, SJR: 2.066, h-index: 77)
IEEE Transactions on Cybernetics     Hybrid Journal   (Followers: 7)
IEEE Transactions on Dependable and Secure Computing     Hybrid Journal   (Followers: 10, SJR: 1.114, h-index: 32)
IEEE Transactions on Device and Materials Reliability     Hybrid Journal   (Followers: 11, SJR: 0.776, h-index: 40)
IEEE Transactions on Dielectrics and Electrical Insulation     Hybrid Journal   (Followers: 5, SJR: 0.665, h-index: 64)
IEEE Transactions on Education     Hybrid Journal   (Followers: 3, SJR: 0.672, h-index: 40)

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IEEE Communications Magazine     [SJR: 4.919]   [H-I: 130]
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   ISSN (Print) 0163-6804
   Published by Institute of Electrical and Electronics Engineers (IEEE) Homepage  [175 journals]
  • IEEE Communications Magazine [Cover]
    • Pages: c1 - c1
      Abstract: Presents the front cover for this issue of the magazine.
      PubDate: January 2015
      Issue No: Vol. 53, No. 1 (2015)
  • Global Communications Newsletter [GCN]
    • Authors: Bregni; S.;Aguilera, P.;
      Pages: 1 - 6
      PubDate: January 2015
      Issue No: Vol. 53, No. 1 (2015)
  • Table of contents
    • Pages: 2 - 4
      Abstract: Presents the table of contents for this issue of this magazine.
      PubDate: January 2015
      Issue No: Vol. 53, No. 1 (2015)
  • 2014: a great year for COMSOC [The President's Page]
    • Authors: Benedetto; S.;
      Pages: 6 - 11
      Abstract: A year has passed, and it is time for a first analysis of the main actions undertaken by ComSoc leadership. The five Com- Soc Vice Presidents will describe their main achievements in 2014, but before leaving the floor to them, I would like to give a concise description of the whole picture.
      PubDate: January 2015
      Issue No: Vol. 53, No. 1 (2015)
  • IEEE GLOBECOM 2014 hosts 57th annual international conference in thriving
           entrepreneurial and technological center known as "the silicon hills"
           [Conference Report]
    • Pages: 12 - 15
      Abstract: IEEE GLOBECOM 2014 (, the premier global conference dedicated to driving advancement in nearly every telecommunications field, held its 57th annual event from December 8???12 in Austin, Texas, the thriving national center for entrepreneurialism and innovation commonly recognized as ???the Silicon Hills.??? Known for its high concentration of technology startups and corporations, the conference???s organizing committee combined the talents of thousands of industry professionals to ensure an enriching experience for both practitioners and academia. This included expanding the industrial program with a far wider breadth of keynotes, executive forums, demos and interactive sessions as well as offering amenities such as a downloadable mobile application, which placed session and conference proceeding information, locations and times at the fingertips of attendees. AT&T and the Austin Hilton further supported IEEE GLOBECOM 2014 by assuring access to the latest 4G LTE cellular technology and state-of-the-art WiFi connections were available throughout the conference venue.
      PubDate: January 2015
      Issue No: Vol. 53, No. 1 (2015)
  • IEEE HPSR 2015: the 16th IEEE international conference on high performance
           switching and routing [Conference Preview]
    • Pages: 16 - 16
      Abstract: The dynamicity of modern communication networks relays on the switching and routing infrastructure. The Cloud, the Internet of Things, the Big Data, the mobile data communications, the 4k video all demand an even more dynamic network provided by high performance switching and routing infrastructure.
      PubDate: January 2015
      Issue No: Vol. 53, No. 1 (2015)
  • Ambient assisted living communications [Guest Editorial]
    • Authors: Rodrigues; J.J.P.C.;MISRA, S.;Wang, H.;Zhu, Z.;
      Pages: 24 - 25
      Abstract: Nowadays taking care of elderly people and the disabled has become a very important but challenging task. Although the elderly have wisdom and wealth gathered from their life experiences, they require special assistance, higher health insurance costs, and even constant monitoring. By utilizing information process and communications technology, ambient assisted living (AAL) communications open up a new way to address such needs for the aged and the sick. Specifically, AAL uses ambient technologies, including data sensing, processing, transmission, and artificial intelligence, to enable new products, services, and processes that help to provide safe, healthy lives for the aged and disabled. It also supports improved social connections and accessibility to the external world. With the growth of AAL environment, the accessibility gets more challenging for the complex data structure.
      PubDate: January 2015
      Issue No: Vol. 53, No. 1 (2015)
  • A smart communication architecture for ambient assisted living
    • Authors: Lloret; J.;Canovas, A.;Sendra, S.;Parra, L.;
      Pages: 26 - 33
      Abstract: Intelligent systems and communication technologies have experienced huge advances in the last few years. AAL can benefit from mixing both research fields. This article presents an intelligent communication architecture for AAL. It uses artificial intelligence to process the information gathered from several types of communication (e.g., wireless sensor networks, wireless ad hoc networks, wireless mesh networks) over any type of communication technologies (e.g., deviceto- device, machine-to-machine, sensor-actuator), know what is happening in the network, and detect if elderly people need assistance. The article shows the main intelligent algorithms included in the AAL system and the developed software application. Several real measurements validate the operation of our proposal.
      PubDate: January 2015
      Issue No: Vol. 53, No. 1 (2015)
  • Smartphone-centric ambient assisted living platform for patients suffering
           from co-morbidities monitoring
    • Authors: Bisio; I.;Lavagetto, F.;Marchese, M.;Sciarrone, A.;
      Pages: 34 - 41
      Abstract: Recently, patients suffering from a set of physical and mental limitations, called co-morbidities, are often treated at home. In this environment, modern communication systems represent a great support to implement Ambient Assisted Living platforms aimed at monitoring patients at home because they enable the seamless integration of heterogeneous sensing units, medical devices, and ubiquitous access to data. This article describes a specific smartphone-centric architecture where smartphones are employed not only as hubs of the health information but also as sensing, processing, and transmitting devices. Smartphones have both short-range (Bluetooth and WiFi employed for local information exchange) and long-range (GPRS, 3G/4G, and WiFi employed as Internet access) communication capabilities; information processing capabilities offered by modern platforms often equipped with different CPUs and with flexible and efficient software; and sensing capabilities implemented through sensors embedded into smartphones such as GPS receivers, accelerometers, microphones, and radio interfaces or through external sensors added to smartphones by cables or connected through local radio interfaces. The specific case of co-morbidities considered in this article implies the necessity to acquire a heterogeneous set of data from patients and from their environment. For this reason this article highlights the information processing capabilities of the introduced smartphone-centric platform. Audio, localization, and movement information processing have been evidenced as well as the specific implementations of these capabilities and their performance.
      PubDate: January 2015
      Issue No: Vol. 53, No. 1 (2015)
  • Overcoming the challenge of variety: big data abstraction, the next
           evolution of data management for AAL communication systems
    • Authors: Mao; R.;Xu, H.;Wu, W.;Li, J.;Li, Y.;Lu, M.;
      Pages: 42 - 47
      Abstract: With the extensive use of information technology in AAL communication systems, a data management model has recently embodied the 3-V characteristics of big data: volume, velocity, and variety. A lot of work has been done on volume and velocity, but not as much has been reported on variety. To handle the variety of data, universal solutions with acceptable performance are usually much more cost effective than customized solutions. To achieve universality, a basic idea is to first define a universal abstraction that covers a wide range of data types, and then build a universal system for universal abstraction. Traditional database management systems commonly use a multidimensional data type, or feature vectors, as a universal abstraction. However, many new data types in AAL systems cannot be abstracted into multidimensional space. To find a more universal data abstraction and build more universal systems, we propose the concept of big data abstraction, with metric space as a universal abstraction for AAL data types. Furthermore, to demonstrate how metricspace data abstraction works, we survey the state of the art in metric space indexing, a fundamental task in data management. Finally, open research issues are discussed.
      PubDate: January 2015
      Issue No: Vol. 53, No. 1 (2015)
  • Bayesian coalition game for the internet of things: an ambient
           intelligence-based evaluation
    • Authors: Kumar; N.;Chilamkurti, N.;Misra, S.C.;
      Pages: 48 - 55
      Abstract: With the evolution of the Internet and related technologies, there has been an evolution of new paradigm, which is the Internet of Things, IoT. In the IoT, a large number of objects/devices on the Internet are connected to one another for information sharing, irrespective of their locations. These devices may be interconnected with one another using various network protocols and standards to exchange information between them. The underlying network used for information exchange generally has built-in intelligence, which is called ambient intelligence, so that it can make adaptive decisions for information exchange between these objects in theh IoT. This article provides a performance evaluation of the Bayesian coalition game among these objects in the IoT environment by using the concepts of game theory and LA. In comparison to the existing solutions, LA are assumed to be the players in the game having variable learning rates in the coalition game. Most of the existing solutions have considered constant learning rates of the players in the game, which may lead to the possibility of local optima at some points. Each player decides its actions using competitive learning, having variable learning rates, based on the newly defined utility function, which leads to the achievment of a Nash equilibrium in the game quickly. Each player receives feedback from the environment corresponding to the actions taken in a unit interval of time. The performance of the proposed scheme was evaluated with respect to various performance evaluation metrics. The results obtained show that the proposed scheme is useful in the IoT environment.
      PubDate: January 2015
      Issue No: Vol. 53, No. 1 (2015)
  • LDPA: a local data processing architecture in ambient assisted living
    • Authors: Wang; K.;Shao, Y.;Shu, L.;Han, G.;Zhu, C.;
      Pages: 56 - 63
      Abstract: In ambient assisted living, one of the most concerning problems is how the living status of the elderly can be accurately judged through the data collected by ambient sensors. To solve this problem, environmental influences should be sufficiently considered. Some researchers have proposed collecting data comprehensively by distributed environmental sensors, but how the massive collected data were to be analyzed and transmitted was ignored. In this article, we propose a local data processing architecture on a local server to analyze collected data. In this three-layer architecture, the latest received data is stored in a data gathering layer. Afterward, a data filtering layer checks the efficiency of data. Also, this layer classifies the received data into static data reflecting sensors??? status and a realtime data stream reflecting quality of life. For static data, they are directly stored in a database, and the real-time data stream is divided into different levels. Based on these levels, a data analyzing layer reorganizes data into a neighborhood structure, which will be called RDAA. A risk factor is returned by RDAA and only abnormal data will be sent to a health care provider when its risk factor is larger than a given threshold. LDAP disperses the stress of remote centralized processing and data storage, which decreases the workload of the remote health care provider. Meanwhile, it also reduces network load and improves processing speed.
      PubDate: January 2015
      Issue No: Vol. 53, No. 1 (2015)
  • Asynchronous flow scheduling for green ambient assisted living
    • Authors: Wu; D.;Cai, Y.;Guizani, M.;
      Pages: 64 - 70
      Abstract: AAL applications that support users (in particular, the elderly and patients) in staying at home are increasingly becoming popular in health care systems. Basically, these AAL applications provide personal information through location-aware, data-aware, and context-aware heterogeneous devices such as sensors and actuators. Obviously, due to this heterogeneity, it is very important to study the asynchronous flow scheduling problem. This article designs a simple but efficient asynchronous flow scheduling scheme aiming to sense, predict, and realize AAL applications. Specifically, the scheduling architecture is developed by analyzing various device characteristics and user activities, and the corresponding applications are classified from user needs aspects. Subsequently, we propose asynchronous flow scheduling taking into account energy efficiency and implementation simplicity. Detailed discussions of the proposed system and possible future research directions are provided.
      PubDate: January 2015
      Issue No: Vol. 53, No. 1 (2015)
  • Authentication protocol for an ambient assisted living system
    • Authors: He; D.;Zeadally, S.;
      Pages: 71 - 77
      Abstract: Recent advances in healthcare technologies along with improved medical care have led to a steady increase in life expectancy over the past few decades. As a result, we have been witnessing a significant growth in the number of elderly people around the world. Ensuring a comfortable living environment for elderly people has gained much attention in recent years. By leveraging information and communication technologies, the AAL system shows great promise in satisfying many requirements of elderly people and enables them to live safely, securely, healthily, and independently. Over the last few years various AAL systems, mostly based on Wireless Body Area Network technologies, have been proposed to improve the quality of life of elderly people. Since the information transmitted in AAL systems is very personal, the security and privacy of such data are becoming important issues that must be dealt with. We first discuss the overall system architecture of a typical AAL system and its associated security requirements. Next we propose an efficient authentication protocol for the AAL system and describe how it meets various security requirements. Finally we compare the performance of the proposed authentication protocol with two other recent authentication protocols and demonstrate its superior efficiency.
      PubDate: January 2015
      Issue No: Vol. 53, No. 1 (2015)
  • Reliable MAC design for ambient assisted living: moving the coordination
           to the cloud
    • Authors: Kartsakli; E.;Antonopoulos, A.;Lalos, A.S.;Tennina, S.;Renzo, M.D.;Alonso, L.;Verikoukis, C.;
      Pages: 78 - 86
      Abstract: AAL technologies constitute a new paradigm that promises quality of life enhancements in chronic care patients and elderly people. From a communication perspective, they involve heterogeneous deployments of body and ambient sensors in complex multihop topologies. Such networks can significantly benefit from the application of cooperative schemes based on network coding, where random linear combinations of the original data packets are transmitted in order to exploit diversity. Nevertheless, network coordination is sometimes required to obtain the full potential of these schemes, especially in the presence of channel errors, requiring the design of efficient, reliable, and versatile MAC protocols. Motivated by the recent advances in cloud computing, we investigate the possibility of transferring the network coordination to the cloud while maintaining the data exchange and storage at a local data plane. Hence, we design a general framework for the development of cloudassisted protocols for AAL applications and propose a high-performance and error-resilient MAC scheme with cloud capabilities.
      PubDate: January 2015
      Issue No: Vol. 53, No. 1 (2015)
  • Extremely dense wireless networks [Guest Editorial]
    • Authors: Cicconetti; C.;De La Oliva, A.;Chieng, D.;Zuniga, J.C.;
      Pages: 88 - 89
      Abstract: The ever growing demand from mobile network users is pushing the current wireless technologies toward their limits. As a matter of fact, not even the most optimistic promises from emerging standards, such as LTEAdvanced and IEEE 802.11ac/ad/af, will be able to satiate the huge appetite for bandwidth of the future users of 5G networks ??? at least, unless the size of cells is reduced dramatically. This situation will soon create a desperate need for extremely dense wireless networks (DenseNets).
      PubDate: January 2015
      Issue No: Vol. 53, No. 1 (2015)
  • Spectral and energy efficiency of ultra-dense networks under different
           deployment strategies
    • Authors: Yunas; S.F.;Valkama, M.;Niemel??, J.;
      Pages: 90 - 100
      Abstract: To tackle the 1000?? mobile data challenge, the research towards the 5th generation of mobile cellular networks is currently ongoing. One clear enabler toward substantially improved network area capacities is the increasing level of network densification at different layers of the overall heterogeneous radio access system. Ultra-dense deployments, or DenseNets, seek to take network densification to a whole new level, where extreme spatial reuse is deployed. This article looks into DenseNets from the perspectives of different deployment strategies, covering the densification of the classical macro layer, extremely dense indoor femto layer, as well as outdoor distributed antenna system (DAS), which can be dynamically configured as a single microcell or multiple independent microcells. Also, the potential of a new indoor-to-outdoor service provisioning paradigm is examined. The different deployment solutions are analyzed from the network area spectral and network energy efficiency perspectives, with extreme densification levels, including both indoor and outdoor use scenarios. The obtained results indicate that dedicated indoor solutions with densely deployed femtocells are much more spectrumand energy-efficient approaches to address the enormous indoor capacity demands compared to densifying the outdoor macro layer, when the systems are pushed to their capacity limits. Furthermore, the dynamic outdoor DAS concept offers an efficient and capacity-adaptive solution to provide outdoor capacity, on demand, in urban areas.
      PubDate: January 2015
      Issue No: Vol. 53, No. 1 (2015)
  • Interference coordination for dense wireless networks
    • Pages: 102 - 109
      Abstract: The promise of ubiquitous and super-fast connectivity for the upcoming years will be in large part fulfilled by the addition of base stations and spectral aggregation. The resulting very dense networks (DenseNets) will face a number of technical challenges. Among others, the interference emerges as an old acquaintance with new significance. As a matter of fact, the interference conditions and the role of aggressor and victim depend to a large extent on the density and the scenario. To illustrate this, downlink interference statistics for different 3GPP simulation scenarios and a more irregular and dense deployment in Tokyo are compared. Evolution to DenseNets offers new opportunities for further development of downlink interference cooperation techniques. Various mechanisms in LTE and LTE-Advanced are revisited. Some techniques try to anticipate the future in a proactive way, whereas others simply react to an identified interference problem. As an example, we propose two algorithms to apply time domain and frequency domain small cell interference coordination in a DenseNet.
      PubDate: January 2015
      Issue No: Vol. 53, No. 1 (2015)
  • Understanding channel selection dynamics in dense Wi-Fi networks
    • Authors: Baid; A.;Raychaudhuri, D.;
      Pages: 110 - 117
      Abstract: This paper aims to explain and analyze a growing problem in dense-urban wireless networks, that of co-existence between low-cost residential access points (APs) and activelymanaged service provider APs in overlapping spatial, frequency, and time domains. Through detailed simulations and testbed experiments, the impact of increasing density of highly-adaptive service provider APs on the performance of typical residential APs is measured in terms of their respective channel assignment schemes. Simulation results with dense deployment of up to 500 APs/ show the benefits of centralized channel assignments, even in the presence of independent APs. In addition, it is shown that for a fixed AP density, an increase in the percentage of AP under the centralized scheme results in an increase in the throughput of surrounding independent APs. The broader implications of the simulation findings are discussed in order to develop a better macro-level understanding of dense Wi-Fi networks.
      PubDate: January 2015
      Issue No: Vol. 53, No. 1 (2015)
  • Per-node throughput enhancement in Wi-Fi densenets
    • Authors: Kyungseop Shin;Ieryung Park;Junhee Hong;Dongsoo Har;Dong-Ho Cho;
      Pages: 118 - 125
      Abstract: Wi-Fi networks are widely deployed for provision of Internet-centric data services. Since the inception of the Wi-Fi network in 1997 with its technical specification rooted in the IEEE 802.11 standard, much progress for higher data throughput has been made. Currently popular IEEE 802.11n Wi-Fi network in 2.4/5 GHz can deliver 600 Mb/s over a 40 MHz channel, which works well for most types of Internet-centric data services, and a later version of a Wi-Fi network based on IEEE 802.11ac is able to transmit at about 7 Gb/s. A simple configuration of a Wi-Fi network consisting of an AP and multiple stations for bidirectional data transmission enables low-cost implementation. High data rate provided at low cost as well as the abundance of Wi- Fi-capable mobile stations recently led to dense deployment of Wi-Fi networks, particularly in residential areas, business offices, and indoor/ outdoor hotspots. However, dense deployment of Wi-Fi networks (e.g., Wi-Fi DenseNets) causes significantly increased overall interference, and as a result a significantly lowered achievable data rate. Thus, it is sensible to consider technologies that can resolve or mitigate deteriorated throughput of Wi-Fi DenseNets. In this article, technologies to deal with throughput enhancement of Wi-Fi DenseNets are addressed from three different perspectives: exploiting cellular technology for data transmission, elevating spectral efficiency, and controlling overall interference levels. Evaluation of interference control for Wi-Fi DenseNets is carried out in this article, and it is found that significant per-node throughput enhancement can be achieved.
      PubDate: January 2015
      Issue No: Vol. 53, No. 1 (2015)
  • On the efficient utilization of radio resources in extremely dense
           wireless networks
    • Authors: Asadi; A.;Sciancalepore, V.;Mancuso, V.;
      Pages: 126 - 132
      Abstract: The emergence of popular wireless technologies such as LTE and WiFi, and the exponential growth in the usage of these technologies, has led to extremely dense wireless networks. There are many proposals for coping with such densification. In particular, we evaluate the compound effect of inter-cell interference schemes and spectrum efficient intra-cell relay techniques, which have been individually proposed recently as separate solutions. We provide a jointly coordinated intracell and inter-cell resource allocation mechanism that opportunistically exploits network density as a resource. We show that intracell opportunistic relay, based on WiFi communications, reduces the complexity of Inter-Cell Interference Coordination (ICIC) and boosts the efficiency of ICIC in LTE. The superiority of the proposed solution to the legacy cellular network operation is proven via simulations.
      PubDate: January 2015
      Issue No: Vol. 53, No. 1 (2015)
  • Toward 5G densenets: architectural advances for effective machine-type
           communications over femtocells
    • Authors: Condoluci; M.;Dohler, M.;Araniti, G.;Molinaro, A.;Zheng, K.;
      Pages: 134 - 141
      Abstract: Ubiquitous, reliable and low-latency machinetype communication, MTC, systems are considered to be value-adds of emerging 5G cellular networks. To meet the technical and economical requirements for exponentially growing MTC traffic, we advocate the use of small cells to handle the massive and dense MTC rollout. We introduce a novel 3GPP-compliant architecture that absorbs the MTC traffic via home evolved NodeBs, allowing us to significantly reduce congestion and overloading of radio access and core networks. A major design challenge has been to deal with the interference to human-type traffic and the large degree of freedom of the system, due to the unplanned deployments of small cells and the enormous amount of MTC devices. Simulation results in terms of MTC access delay, energy consumption, and delivery rate corroborate the superiority of the proposed working architecture.
      PubDate: January 2015
      Issue No: Vol. 53, No. 1 (2015)
  • Distributed mobility management for future 5G networks: overview and
           analysis of existing approaches
    • Authors: Giust; F.;Cominardi, L.;Bernardos, C.J.;
      Pages: 142 - 149
      Abstract: The ever-increasing demand of mobile Internet traffic is pushing operators to look for solutions to increase the available bandwidth per user and per unit of area. At the same time, they need to reduce the load in the core network at a reasonable cost in their future 5G deployments. Today???s trend points to the deployment of extremely dense networks in order to provide ubiquitous connectivity at high data rates. However, this is hard to couple with the current mobile networks??? architecture, which is heavily centralized, posing difficult challenges when coping with the foreseen explosion of mobile data. Additionally, future 5G networks will exhibit disparate types of services, posing different connectivity requirements. Distributed mobility management is emerging as a valid framework to design future mobile network architectures, taking into account the requirements for large traffic in the core and the rise of extremely dense wireless access networks. In this article, we discuss the adoption of a distributed mobility management approach for mobile networks, and analyze the operation of the main existing solutions proposed so far, including a first practical evaluation based on experiments with real Linux-based prototype implementations.
      PubDate: January 2015
      Issue No: Vol. 53, No. 1 (2015)
  • Software-defined networking in cellular radio access networks: potential
           and challenges
    • Authors: Arslan; M.Y.;Sundaresan, K.;Rangarajan, S.;
      Pages: 150 - 156
      Abstract: Software-defined networking has brought both performance and management benefits to wired networks. It is natural to wonder if SDN principles also apply and can deliver similar benefits to RANs. It is this question that we intend to address in this article. We first highlight that the core SDN principle of decoupling control and data planes already exists in RANs in the form of self-organizing networking solutions, which can optimize RAN performance at coarse timescales. In addition to control/data plane separation, we also elaborate how fine timescale optimizations such as coordinated multi-point transmission are made practical with the help of cloud RANs (C-RANS), which offer the notion of processing decoupled from transmission within the data plane. We finally discuss the potential and challenges related to a less explored application of SDN in the RAN, which is programming the fronthaul network in a C-RAN. We argue that this novel notion of software-defined fronthaul, SDF, has the power to orchestrate novel applications and thus should be a key area of focus in RAN optimization.
      PubDate: January 2015
      Issue No: Vol. 53, No. 1 (2015)
  • Scalability of dense wireless lighting control networks
    • Authors: Dandelski; C.;Wenning, B.-L.;Viramontes Perez, D.;Pesch, D.;Linnartz, J.-P.M.G.;
      Pages: 157 - 165
      Abstract: In modern lighting systems, the introduction of wirelessly controlled LED light sources leads to very dense wireless lighting networks. Current approaches for control message transmission are based on broadcasting messages among many luminaires. However, adequate communication performance ??? in particular, sufficiently low latency and synchronicity ??? is difficult to ensure in such networks, especially if the network is part of a wireless building management system and carries not only low-latency broadcast messages but also collects data from sensors. This article describes the challenge of dense wireless lighting control networks. In particular, it discusses the underlying mechanisms and refers to current wireless sensor network solutions in which scalability is relevant.
      PubDate: January 2015
      Issue No: Vol. 53, No. 1 (2015)
  • Millimeter-wave communications for 5G ??? Part 2: applications
           [Guest Editorial]
    • Authors: Elkashlan; M.;Duong, T.Q.;Hsiao-Hwa Chen;
      Pages: 166 - 167
      Abstract: In the September 2014 issue of IEEE Communications Magazine, the first part of this Feature Topic included five articles that covered the fundamentals of mmWave communications with topics ranging from propagation to coverage, presenting a holistic view of research challenges and opportunities in the emerging area of mmWave radio systems and 5G mobile broadband. The use of this technology is expected to surge in the next few years and to transform the Internet industry in the next 10 years. This part of the Feature Topic will address in more detail many technical and application issues related to beamforming, device-to-device communications, heterogeneous networks, and multimedia transmission.
      PubDate: January 2015
      Issue No: Vol. 53, No. 1 (2015)
  • Multi-gigabit millimeter wave wireless communications for 5G: from fixed
           access to cellular networks
    • Authors: Wang; P.;Li, Y.;Song, L.;Vucetic, B.;
      Pages: 168 - 178
      Abstract: With the formidable growth of various booming wireless communication services that require ever increasing data throughputs, the conventional microwave band below 10 GHz, which is currently used by almost all mobile communication systems, is going to reach its saturation point within just a few years. Therefore, the attention of radio system designers has been pushed toward ever higher segments of the frequency spectrum in a quest for increased capacity. In this article we investigate the feasibility, advantages, and challenges of future wireless communications over the Eband frequencies. We start with a brief review of the history of the E-band spectrum and its light licensing policy as well as benefits/challenges. Then we introduce the propagation characteristics of E-band signals, based on which some potential fixed and mobile applications at the E-band are investigated. In particular, we analyze the achievability of a nontrivial multiplexing gain in fixed point-to-point E-band links, and propose an E-band mobile broadband (EMB) system as a candidate for the next generation mobile communication networks. The channelization and frame structure of the EMB system are discussed in detail.
      PubDate: January 2015
      Issue No: Vol. 53, No. 1 (2015)
  • Random access in millimeter-wave beamforming cellular networks: issues and
    • Authors: Jeong; C.;Park, J.;Yu, H.;
      Pages: 180 - 185
      Abstract: With the formidable growth of various booming wireless communication services that require ever increasing data throughputs, the conventional microwave band below 10 GHz, which is currently used by almost all mobile communication systems, is going to reach its saturation point within just a few years. Therefore, the attention of radio system designers has been pushed toward ever higher segments of the frequency spectrum in a quest for increased capacity. In this article we investigate the feasibility, advantages, and challenges of future wireless communications over the Eband frequencies. We start with a brief review of the history of the E-band spectrum and its light licensing policy as well as benefits/challenges. Then we introduce the propagation characteristics of E-band signals, based on which some potential fixed and mobile applications at the E-band are investigated. In particular, we analyze the achievability of a nontrivial multiplexing gain in fixed point-to-point E-band links, and propose an E-band mobile broadband (EMB) system as a candidate for the next generation mobile communication networks. The channelization and frame structure of the EMB system are discussed in detail.
      PubDate: January 2015
      Issue No: Vol. 53, No. 1 (2015)
  • Large-scale antenna systems with hybrid analog and digital beamforming for
           millimeter wave 5G
    • Authors: Shuangfeng Han;Chih-Lin I;Zhikun Xu;Rowell; C.;
      Pages: 186 - 194
      Abstract: With the severe spectrum shortage in conventional cellular bands, large-scale antenna systems in the mmWave bands can potentially help to meet the anticipated demands of mobile traffic in the 5G era. There are many challenging issues, however, regarding the implementation of digital beamforming in large-scale antenna systems: complexity, energy consumption, and cost. In a practical large-scale antenna deployment, hybrid analog and digital beamforming structures can be important alternative choices. In this article, optimal designs of hybrid beamforming structures are investigated, with the focus on an N (the number of transceivers) by M (the number of active antennas per transceiver) hybrid beamforming structure. Optimal analog and digital beamforming designs in a multi-user beamforming scenario are discussed. Also, the energy efficiency and spectrum efficiency of the N ?? M beamforming structure are analyzed, including their relationship at the green point (i.e., the point with the highest energy efficiency) on the energy efficiency-spectrum efficiency curve, the impact of N on the energy efficiency performance at a given spectrum efficiency value, and the impact of N on the green point energy efficiency. These results can be conveniently utilized to guide practical LSAS design for optimal energy/ spectrum efficiency trade-off. Finally, a reference signal design for the hybrid beamform structure is presented, which achieves better channel estimation performance than the method solely based on analog beamforming. It is expected that large-scale antenna systems with hybrid beamforming structures in the mmWave band can play an important role in 5G.
      PubDate: January 2015
      Issue No: Vol. 53, No. 1 (2015)
  • Point-to-multipoint in-band mmwave backhaul for 5G networks
    • Authors: Taori; R.;Sridharan, A.;
      Pages: 195 - 201
      Abstract: Cost-effective and scalable wireless backhaul solutions are essential for realizing the 5G vision of providing gigabits per second anywhere. Not only is wireless backhaul essential to support network densification based on small cell deployments, but also for supporting very low latency inter-BS communication to deal with intercell interference. Multiplexing backhaul and access on the same frequency band (in-band wireless backhaul) has obvious cost benefits from the hardware and frequency reuse perspective, but poses significant technology challenges. We consider an in-band solution to meet the backhaul and inter-BS coordination challenges that accompany network densification. Here, we present an analysis to persuade the readers of the feasibility of in-band wireless backhaul, discuss realistic deployment and system assumptions, and present a scheduling scheme for inter- BS communications that can be used as a baseline for further improvement. We show that an inband wireless backhaul for data backhauling and inter-BS coordination is feasible without significantly hurting the cell access capacities.
      PubDate: January 2015
      Issue No: Vol. 53, No. 1 (2015)
  • Ultra-dense networks in millimeter-wave frequencies
    • Authors: Baldemair; R.;Irnich, T.;Balachandran, K.;Dahlman, E.;Mildh, G.;Sel??n, Y.;Parkvall, S.;Meyer, M.;Osseiran, A.;
      Pages: 202 - 208
      Abstract: Demands for very high system capacity and end-user data rates of the order of 10 Gb/s can be met in localized environments by Ultra-Dense Networks (UDN), characterized as networks with very short inter-site distances capable of ensuring low interference levels during communications. UDNs are expected to operate in the millimeter-wave band, where wide bandwidth signals needed for such high data rates can be designed, and will rely on high-gain beamforming to mitigate path loss and ensure low interference. The dense deployment of infrastructure nodes will make traditional wire-based backhaul provisioning challenging. Wireless self-backhauling over multiple hops is proposed to enhance flexibility in deployment. A description of the architecture and a concept based on separation of mobility, radio resource coordination among multiple nodes, and data plane handling, as well as on integration with wide-area networks, is introduced. A simulation of a multi-node office environment is used to demonstrate the performance of wireless self-backhauling at various loads.
      PubDate: January 2015
      Issue No: Vol. 53, No. 1 (2015)
  • Enabling device-to-device communications in millimeter-wave 5G cellular
    • Authors: Qiao; J.;Shen, X.S.;Mark, J.W.;Shen, Q.;He, Y.;Lei, L.;
      Pages: 209 - 215
      Abstract: Millimeter-wave communication is a promising technology for future 5G cellular networks to provide very high data rate (multi-gigabits-persecond) for mobile devices. Enabling D2D communications over directional mmWave networks is of critical importance to efficiently use the large bandwidth to increase network capacity. In this article, the propagation features of mmWave communication and the associated impacts on 5G cellular networks are discussed. We introduce an mmWave+4G system architecture with TDMA-based MAC structure as a candidate for 5G cellular networks. We propose an effective resource sharing scheme by allowing non-interfering D2D links to operate concurrently. We also discuss neighbor discovery for frequent handoffs in 5G cellular networks.
      PubDate: January 2015
      Issue No: Vol. 53, No. 1 (2015)
  • Hybrid millimeter-wave systems: a novel paradigm for hetnets
    • Authors: Mehrpouyan; H.;Matthaiou, M.;Wang, R.;Karagiannidis, G.K.;Hua, Y.;
      Pages: 216 - 221
      Abstract: Heterogeneous networks, HetNets, are known to enhance the bandwidth efficiency and throughput of wireless networks by more effectively utilizing the network resources. However, the higher density of users and access points in HetNets introduces significant inter-user interference that needs to be mitigated through complex and sophisticated interference cancellation schemes. Moreover, due to significant channel attenuation and the presence of hardware impairments, e.g. phase noise and amplifier nonlinearities, the vast bandwidth in the millimeterwave band has not been fully utilized to date. In order to enable the development of multi-Gigabit per second wireless networks, we introduce a novel millimeter-wave HetNet paradigm, termed hybrid HetNet, which exploits the vast bandwidth and propagation characteristics in the 60 GHz and 70???80 GHz bands to reduce the impact of interference in HetNets. Simulation results are presented to illustrate the performance advantage of hybrid HetNets with respect to traditional networks. Next, two specific transceiver structures that enable hand-offs from the 60 GHz band, i.e. the V-band to the 70???80 GHz band, i.e. the E-band, and vice versa are proposed. Finally, the practical and regulatory challenges for establishing a hybrid HetNet are outlined.
      PubDate: January 2015
      Issue No: Vol. 53, No. 1 (2015)
  • 10 Gb/s hetsnets with millimeter-wave communications: access and
           networking - challenges and protocols
    • Authors: Zheng; K.;Zhao, L.;Mei, J.;Dohler, M.;Xiang, W.;Peng, Y.;
      Pages: 222 - 231
      Abstract: Heterogeneous and small cell networks (Het- SNets) increase spectral efficiency and throughput via hierarchical deployments. In order to meet the increasing requirements in capacity for future 5G wireless networks, millimeter-wave (mmWave) communications with unprecedented spectral resources have been suggested for 5G HetSNets. While the mmWave physical layer is well understood, major challenges remain for its effective and efficient implementation in Het- SNets from an access and networking point of view. Toward this end, we introduce a novel but 3GPP backwards-compatible frame structure, based on time-division duplex, which facilitates both high-capacity access and backhaul links. We then discuss networking issues arising from the multihop nature of the mmWave backhauling mesh. Finally, system-level simulations evaluate the performance of HetSNets with mmWave communications and corroborate the possibility of having capacities of tens of gigabits per second in emerging 5G systems.
      PubDate: January 2015
      Issue No: Vol. 53, No. 1 (2015)
  • Millimeter-wave multimedia communications: challenges, methodology, and
    • Authors: Wu; D.;Wang, J.;Cai, Y.;Guizani, M.;
      Pages: 232 - 238
      Abstract: The worldwide opening of a massive amount of unlicensed millimeter-wave spectrum has triggered great interest in developing high-bit-rate multimedia services and applications. Specific challenges for mmWave communication design include large-scale attenuation, atmospheric absorption, phase noise, limited gain amplifiers, and so on. This article aims to define and evaluate important metrics to characterize multimedia QoS and jointly takes these technical challenges into account in the framework of mmWave. To this end, we design a QoS-aware multimedia scheduling scheme to achieve the trade-off between performance and complexity, in which accurate propagation analysis is carried out and suitable countermeasure techniques are pointed out to satisfy the QoS requirements. Moreover, potential multimedia applications are analyzed and possible solutions provided. Illustrative results indicate that the proposed multimedia scheduling scheme can perform efficiently in a practical mmWave communication system.
      PubDate: January 2015
      Issue No: Vol. 53, No. 1 (2015)
  • Multimedia resource allocation in mmwave 5G networks
    • Authors: Scott-Hayward; S.;Garcia-Palacios, E.;
      Pages: 240 - 247
      Abstract: The 5G network infrastructure is driven by the evolution of today???s most demanding applications. Already, multimedia applications such as on-demand HD video and IPTV require gigabit- per-second throughput and low delay, while future technologies include ultra HDTV and machine-to-machine communication. Mm-Wave technologies such as IEEE 802.15.3c and IEEE 802.11ad are ideal candidates to deliver high throughput to multiple users demanding differentiated QoS. Optimization is often used as a methodology to meet throughput and delay constraints. However, traditional optimization techniques are not suited to a mixed set of multimedia applications. Particle swarm optimization (PSO) is shown as a promising technique in this context. Channel-time allocation PSO (CTA-PSO) is successfully shown here to allocate resource even in scenarios where blockage of the 60 GHz signal poses significant challenges.
      PubDate: January 2015
      Issue No: Vol. 53, No. 1 (2015)
  • Ad Hoc and sensor networks [Series Editorial]
    • Authors: Biagioni; E.;Giordano, S.;
      Pages: 248 - 248
      Abstract: Recently, in this series, Conti et al. introduced the concept of the "Multi-Paradigm Era [1]," where several ad hoc paradigms may be mixed together and integrated with infrastructure-based networks. This issue fully confirms this trend. We present here three articles that clearly show how technologies and paradigms are not confined within a single field, but rather contribute in combination to provide useful solutions.
      PubDate: January 2015
      Issue No: Vol. 53, No. 1 (2015)
  • Sparse representation based acoustic rangefinders: from sensor platforms
           to mobile devices
    • Authors: Misra; P.;Kanhere, S.S.;Jha, S.;HU, W.;
      Pages: 249 - 257
      Abstract: Acoustic rangerfinders are a promising technology for accurate proximity detection, a critical requirement for many emerging mobile computing applications. While state-of-the-art systems deliver robust ranging performance, the computational intensiveness of their detection mechanism expedites the energy depletion of the associated devices that are typically powered by batteries. The contribution of this article is fourfold. First, it outlines the common factors that are important for ranging. Second, it presents a review of acoustic rangers and identifies their potential problems. Third, it explores the design of an information processing framework based on sparse representation that could potentially address existing challenges, especially for mobile devices. Finally, it presents μ-BeepBeep: a low energy acoustic ranging service for mobile devices, and empirically evaluates its benefits.
      PubDate: January 2015
      Issue No: Vol. 53, No. 1 (2015)
  • Delay-tolerant network protocol testing and evaluation
    • Authors: Li; Y.;Hui, P.;JIN, D.;Chen, S.;
      Pages: 258 - 266
      Abstract: Delay-tolerant networks, DTNs, are characterized by lacking end-to-end paths between communication sources and destinations. A variety of routing schemes have been proposed to provide communication services in DTNs, and credible and flexible protocol evaluation tools are in demand in order to test these DTN routing schemes. By examining the evolution of DTN protocol testing and evaluation, this article discusses the trend toward large-scale mobility trace supported emulation, and we propose TUNIE, a large-scale emulation testbed for DTN protocol evaluation based on network virtualization. Unlike the existing simulation tools and real-life testbeds, which either cannot provide a realistic DTN environment setup or are too costly and time-consuming, our proposed TUNIE architecture is capable of simulating reliable DTN environments and obtaining an accurate system performance evaluation. By system prototype and implementation, we demonstrate TUNIE as a flexible platform for evaluating DTN protocol performance.
      PubDate: January 2015
      Issue No: Vol. 53, No. 1 (2015)
  • On the potential of bluetooth low energy technology for vehicular
    • Authors: Jiun-Ren Lin;Talty; T.;Tonguz, O.K.;
      Pages: 267 - 275
      Abstract: With the increasing number of sensors in modern vehicles, using an intra-vehicular wireless sensor network (IVWSN) is a possible solution for the automotive industry for addressing the potential issues that arise from additional wiring harness. Such a solution could help car manufacturers develop vehicles that have better fuel economy and performance, in addition to supporting new applications. However, which wireless technology should be used for maximizing the benefits of IVWSNs is still an open issue. In this article we propose to use a new wireless technology known as Bluetooth Low Energy (BLE) and outline a new architecture for IVWSN. Based on a comprehensive study that encompasses an example application, it is shown that BLE is an excellent option that can be used in IVWSNs for certain applications mainly due to its good performance and low-power, lowcomplexity, and low-cost attributes.
      PubDate: January 2015
      Issue No: Vol. 53, No. 1 (2015)
  • Network and service management [Series Editorial]
    • Authors: Pavlou; G.;Schoenwaelder, J.;
      Pages: 276 - 277
      Abstract: This is the 18th issue of the series on Network and Service Management, which is published twice a year. Until 2012 it was published in July and December, but since 2013 it is published in January and July. The series provides articles on the latest developments in this well established discipline, highlighting recent research achievements and providing insight into both theoretical and practical issues related to the evolution of the discipline from different perspectives. The series provides a forum for the publication of both academic and industrial research, addressing the state of the art, theory, and practice in network and service management.
      PubDate: January 2015
      Issue No: Vol. 53, No. 1 (2015)
  • Software-defined networking: management requirements and challenges
    • Authors: Wickboldt; J.A.;De Jesus, W.P.;Isolani, P.H.;Bonato Both, C.;Rochol, J.;Zambenedetti Granville, L.;
      Pages: 278 - 285
      Abstract: SDN is an emerging paradigm currently evidenced as a new driving force in the general area of computer networks. Many investigations have been carried out in the last few years about the benefits and drawbacks in adopting SDN. However, there are few discussions on how to manage networks based on this new paradigm. This article contributes to this discussion by identifying some of the main management requirements of SDN. Moreover, we describe current proposals and highlight major challenges that need to be addressed to allow wide adoption of the paradigm and related technology.
      PubDate: January 2015
      Issue No: Vol. 53, No. 1 (2015)
  • A recommender system architecture for predictive telecom network
    • Authors: Zaman; F.;Hogan, G.;Van Der Meer, S.;Keeney, J.;Robitzsch, S.;Muntean, G.-M.;
      Pages: 286 - 293
      Abstract: Current telecom networks generate massive amounts of monitoring data consisting of observations on network faults, configuration, accounting, performance, and security. Due to the ever increasing degree of complexity of networks, coupled with specific constraints (legal, regulatory, increasing scale of management in heterogeneous networks), the traditional reactive management approaches are increasingly stretched beyond their capabilities. A new network management paradigm is required that takes a preemptive rather than reactive approach to network management. This work presents the design and specification of E-Stream, a predictive recommendationbased solution to automated network management. The architecture of E-Stream illustrates the challenges of leveraging vast volumes of management data to identify preemptive corrective actions. Such design challenges are mitigated by the components of E-Stream, which together form a single functional system. The EStream approach starts by abstracting trace information to extract sequences of events relevant to interesting incidents in the network. After observing event sequences in incoming event streams, specific appropriate actions are selected, ranked, and recommended to preempt the predicted incidents.
      PubDate: January 2015
      Issue No: Vol. 53, No. 1 (2015)
  • Management architecture for location-aware self-organizing LTE/LTE-a small
           cell networks
    • Authors: Fortes; S.;Aguilar-Garcia, A.;Barco, R.;Barba Barba, F.;Fernandez-Luque, J.A.;Fernandez-Duran, A.;
      Pages: 294 - 302
      Abstract: This article proposes a novel architecture for next-generation cellular networks in indoor scenarios. The objective of this model is to support SON mechanisms based on the knowledge of the user equipment location in a small cell network, the use of such information being a key enabler for advanced SON methods. The defined design is the basis for systems providing innovative location-aware SON techniques that make use of user localization in medium/large indoor areas (e.g., malls or corporate buildings). The functional and physical characteristics of this architecture and their technical implications are analyzed. Proposed innovations to generic mobile architecture are described as well as specific implementation for LTE/LTE-A standards. Interoperability with standard management systems and localization services, congestion avoidance, and data offloading are the key drivers of the design. Finally, the capabilities of the proposed architecture are demonstrated through the performance analysis of a simple key use case for location-aware self-optimization.
      PubDate: January 2015
      Issue No: Vol. 53, No. 1 (2015)
  • Errata
    • Pages: 303 - 303
      Abstract: In the September 2014 issue of IEEE Communications Magazine, vol. 52, no. 9, pp. 78???86, the article ???Radio Propagation Path Loss Models for 5G Cellular Networks in the 28 GHz and 38 GHz Millimeter-Wave Bands??? (Sulyman, A.I., et al),had two errors. The first error was in the legend of Fig. 1. The legend shows a path loss exponent ???nbest = 4.5,??? but it should actually show ???nbest = 3.7.??? The second error was present in Table 1, row 7, starting with ???TX Gain (dBi).??? The last column shows a ???1??? when it should actually be ???15.???
      PubDate: January 2015
      Issue No: Vol. 53, No. 1 (2015)
  • Advertisers' index
    • Pages: 304 - 304
      Abstract: Listing of the advertisers represented in this issue.
      PubDate: January 2015
      Issue No: Vol. 53, No. 1 (2015)
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