Journal ArticleDOI
Mobility using IEEE 802.21 in a heterogeneous IEEE 802.16/802.11-based, IMT-advanced (4G) network
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TLDR
IEEE 802.21 (the emerging IEEE standard for media-independent handover services) supports ";seamless"; mobility between these two radio access technologies, and it is concluded that an 802.11VHT + 802.16 m +802.21 system is likely to be proposed to the ITU-R for IMT- Advanced 4G.Abstract:
Industry is defining a new generation of mobile wireless technologies, called in cellular terminology "fourth generation" or "4G." This article shows that a system combining extensions of two radio access technologies, IEEE 802.11 and IEEE 802.16, meets the ITU-R's "IMT-Advanced" or 4G requirements. The extensions are 802.16 m (100 Mb/s, 250 km/h) and 802.11VHT (1 Gb/s, low velocity). The focus of this article is to show how IEEE 802.21 (the emerging IEEE standard for media-independent handover services) supports ";seamless"; mobility between these two radio access technologies. This mobility integrates the two radio access technologies into one system. We conclude that an 802.11VHT + 802.16 m + 802.21 system is likely to be proposed to the ITU-R for IMT- Advanced 4G.read more
Citations
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State of the Art in 60-GHz Integrated Circuits and Systems for Wireless Communications
TL;DR: An overview of the technological advances in millimeter-wave circuit components, antennas, and propagation that will soon allow 60-GHz transceivers to provide multigigabit per second (multi-Gb/s) wireless communication data transfers in the consumer marketplace is presented.
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The IEEE 802.11 universe
TL;DR: The emerging 802.11 standard is overviewed and its finalized amendments and those under development are highlighted, to address the technical context of its extensions.
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60 GHz Wireless: Up Close and Personal
TL;DR: Several ongoing challenges are surveyed, including the design of cost-efficient and low-loss on-chip and in-package antennas and antenna arrays, the characterization of CMOS processes at millimeter-wave frequencies, the discovery of efficient modulation techniques that are suitable for the unique hardware impairments and frequency selective channel characteristics at millimeters-wavefrequency.
Journal ArticleDOI
Vertical Mobility Management Architectures in Wireless Networks: A Comprehensive Survey and Future Directions
Stenio Fernandes,Ahmed Karmouch +1 more
TL;DR: A comprehensive review of the literature on mobility management architectures for seamless handover of mobile users in heterogeneous networks is presented and a new architecture called Context-Aware Mobility Management System (CAMMS) is presented.
Journal ArticleDOI
Interworking in heterogeneous wireless networks: Comprehensive framework and future trends
TL;DR: This article develops a comprehensive framework to categorize interworking solutions by defining a generic set of interworking levels and its related key interworking mechanisms to achieve ubiquitous access and seamless mobility in heterogeneous wireless networks.
References
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Journal ArticleDOI
Handoff in hybrid mobile data networks
Kaveh Pahlavan,Prashant Krishnamurthy,Ahmad Hatami,Mika Ylianttila,Juha-Pekka Makela,R. Pichna,J. Vallstron +6 more
TL;DR: An overview of issues related to handoff with particular emphasis on hybrid mobile data networks is presented and five architectures for the example hybrid network, based on emulation of GPRS entities within the WLAN, mobile IP, a virtual access point, and a mobility gateway, are described and compared.
Journal ArticleDOI
Efficient mobility management for vertical handoff between WWAN and WLAN
TL;DR: In this article, the authors propose a mobility management system that integrates a connection manager to detect network condition changes in a timely and accurate manner, and a virtual connectivity manager that uses an end-to-end principle to maintain a connection without additional network infrastructure support.
Journal ArticleDOI
Media-independent handover for seamless service provision in heterogeneous networks
TL;DR: The main seamless mobility principles are identified and used as the basis for further evaluating the potential of the IEEE 802.21 standard to meet the requirements of applications for minimum disruption during an inter-technology handover.
Proceedings ArticleDOI
Optimization scheme for mobile users performing vertical handoffs between IEEE 802.11 and GPRS/EDGE networks
TL;DR: Simulation results for mean throughput and handoff delay obtained in vertical handoff and horizontal handoff in IEEE 802.11 and GPRS/EDGE networks are presented and an optimization scheme for mobile users performing vertical handoffs is presented with analysis.
Proceedings ArticleDOI
Managing mobility and adaptation in upcoming 802.21 enabled devices
Filippo Cacace,Luca Vollero +1 more
TL;DR: This paper proposes a centralized element called Mobility Manager interfacing with the 802.21 sublayer and responsible for the application of connectivity policies and showed how the MM can interact with adaptive applications in order to improve further the range of usability of real-time applications.