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1.
Chan P.M.L. Sheriff R.E. Hu Y.F. Conforto P. Tocci C. 《Communications Magazine, IEEE》2001,39(12):42-51
The next generation in mobility management will enable different mobile networks to interoperate with each other to ensure terminal and personal mobility and global portability of network services. However, in order to ensure global mobility, the deployment and integration of both satellite and terrestrial components are necessary. This article is focused on issues related to mobility management in a future mobile communications system, in a scenario where a multisegment access network is integrated into an IP core network by exploiting the principles of Mobile IP. In particular, attention is given to the requirements for location, address, and handover management. In a heterogeneous environment, the need to perform handover between access networks imposes particular constraints on the type of information available to the terminal and network. In this case, consideration will need to be given to parameters other than radio characteristics, such as achievable quality of service and user preference. This article proposes a new approach to handover management by applying the fuzzy logic concept to a heterogeneous environment. The article concludes with a presentation of mobility management signaling protocols 相似文献
2.
A novel media independent handover‐based approach for vertical handover over heterogeneous wireless networks
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N. Omheni F. Zarai M. S. Obaidat K.‐F. Hsiao L. Kamoun 《International Journal of Communication Systems》2014,27(5):811-824
The key purpose for seamless mobility and service continuity between heterogeneous wireless networks is the handover. Vertical handover management is one of key challenges in such environment. To deal with some of these challenges, an IEEE 802.21 media independent handover (MIH) framework has been standardized. The main purpose of this standard is to offer a general interface for the handover by abstracting the link layer intelligence to higher layers. However, there still exist a number of limitations in MIH architecture. In this paper, a new architecture of improved MIH is presented to perform vertical handover between wireless heterogeneous networks. We focused on interworking architecture between wireless local area network and long term evolution advanced network with the use of MIH signaling to define an efficient vertical handover. A performance analysis model for the proposed MIH‐based vertical handover is derived. Analysis results show that the proposed method can be easily deployed in present multimedia service networks. Copyright © 2013 John Wiley & Sons, Ltd. 相似文献
3.
We present a novel end-to-end QoS architecture that enables seamless services over heterogeneous wireless access networks. We discuss the main architectural approaches and design issues of mobility-aware QoS signaling in IP networks. Then we introduce a QoS signaling architecture that integrates resource management with mobility management. It is based on a domain resource manager concept and nicely supports various handover types in an integrated approach. In particular, we support anticipated handover with pre-reservation of resources over the old network before the mobile node is attached to the new access point. 相似文献
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Kuan‐Lin Chiu Yuh‐Shyan Chen Ren‐Hung Hwang 《International Journal of Communication Systems》2011,24(6):789-809
The next generation wireless communication system will likely be heterogeneous networks, as various technologies can be integrated on heterogeneous networks. A mobile multiple‐mode device can easily access the Internet through different wireless interfaces. The mobile multiple‐mode device thus could switch to different access points to maintain the robustness of the connection when it can acquire more resources from other heterogeneous wireless networks. The mobile multiple‐mode device therefore needs to face the handover problem in such environment. This work introduces Session Initiation Protocol (SIP)‐based cross‐layer scheme to support seamless handover scheme over heterogeneous networks. The proposed scheme consists of a battery lifetime‐based handover policy and cross‐layer fast handover scheme, called the SIP‐based mobile stream control transmission protocol (SmSCTP). This work describes the major idea of the proposed scheme and infrastructure. The proposed scheme has been implemented in Linux system. The simulation and numerical results demonstrate that the proposed SmSCTP scheme yields better signaling cost, hand‐off delay time, packet loss and delay jitter than SIP and mSCTP protocols. Copyright © 2010 John Wiley & Sons, Ltd. 相似文献
6.
Roland Bless Joachim Hillebrand Christian Prehofer Martina Zitterbart 《Wireless Personal Communications》2007,43(3):817-835
The coupling of signaling protocols for mobility management and resource reservation plays an important role to achieve Quality-of-Service
(QoS) in wireless environments. When performing a handover, request and allocation of resources have to be done in the shortest
possible time to avoid disruptions for the user service. Therefore, it is preferable to ensure resource availability in advance,
which we call anticipated handover. This approach for providing seamless handovers in turn poses challenges for the overall
design of the QoS architecture and its associated QoS signaling protocol. This article describes the design, implementation,
and evaluation of a comprehensive QoS architecture and a suitable QoS signaling protocol. It discusses intrinsic problems
of reservations in IP based networks such as session ownership as well as a number of protocol design issues regarding the
integration of QoS signaling with other protocols, such as Mobile IP. In particular, we define an end-to-end QoS architecture
and a mobility-aware reservation signaling protocol Mobility Aware Reservation Signaling Protocol (MARSP) that supports anticipated
handover, thus enabling seamless services over heterogeneous wireless access networks. The presented architecture and protocol
were implemented and evaluated by measurements. They show that anticipated handovers not only outperform hard handovers regarding
handover latency, but that they also provide functional and robustness advantages.
Authors Hillebrand and Prehofer changed their affiliation in the meantime, the work described in this paper was carried out
during their employment at DoCoMo Communications Laboratories Europe. 相似文献
7.
Mohammad Reza HeidariNezhad Zuriati Ahmad Zukarnain Nur Izura Udzir Mohamed Othman 《电信纪事》2009,64(9-10):677-691
The 4G or Beyond 3G wireless networks is consist of IP-based heterogeneous access networks from 3G cellular, WiFi, WiMAX to other emerging access technologies such as mesh networks. The key objective of designing the next generation wireless networks is to support of mobile subscribers. To support the mobile host in the hybrid wireless access technologies, many solutions based on network protocol stack have been proposed in the literature. In this article, after review of mobility concepts, a special attention is given to some of the mobility management methods as well as handover techniques across various wireless access networks. We have also compared the major mobility protocols in each layer for their features. Finally, some of the open issues that needed to be addressed in mobility management protocol in the next generation wireless networks are outlined. 相似文献
8.
Hayoung Oh Kibaek Yoo Jongkeun Na Chong-kwon Kim 《Wireless Personal Communications》2010,52(3):593-613
With the rapid development of wireless technologies and numerous types of mobile devices, the need to support seamless multimedia
services in Mobile and Ubiquitous Computing (MUC) is growing. To support the seamless handover, several mobility protocols
such as Mobile IPv6 (MIPv6) (Johnson et al., Mobility Support in IPv6, IETF, RFC 3775, 2004) and fast handover for the MIPv6
(FMIPv6) (Koodli et al. Past handovers for mobile IPv6 (FMIPv6), IETF, RFC 4068, 2005) were developed. However, MIPv6 depreciates
the Quality-of-Service (QoS) especially in multimedia service applications because of the long handover latency and packet
loss problem. To solve these problems in the MIPv6, FMIPv6 is proposed in the Internet Engineering Task Force (IETF). However,
FMIPv6 is not robust for the multimedia services in heterogeneous emerging wireless networks when the MN may move to another
visited network in contrast with its anticipation. In MUC, the possibility of service failure is more increased because mobile
users can frequently change the access networks according to their mobility in heterogeneous wireless access networks such
as 3Generation (3G), Wireless Fidelity (Wi-Fi), Worldwide Interoperability for Microwave Access (WiMax) and Bluetooth co-existed.
In this paper, we propose a robust seamless handover scheme for the multimedia services in heterogeneous emerging wireless
networks. The proposed scheme reduces the handover latency and handover initiation time when handover may fail through the
management of tentative Care-of Addresses (CoAs) that does not require Duplicate Address Detection (DAD). Through performance
evaluation, we show that our scheme provides more robust handover mechanism than other scheme such as FMIPv6 for the multimedia
services in heterogeneous emerging wireless networks. 相似文献
9.
A scalable network-based mobility management framework in heterogeneous IP-based networks 总被引:1,自引:0,他引:1
This paper proposes a mobility management scheme to provide a mobile node with high-quality handovers among heterogeneous wireless access networks. The proposed scheme employs a signaling architecture to support fast and reliable delivery of control messages by separating a control plane from a data transport plane in the core network. The proposed scheme is based on the network-based mobility management framework which requires the minimum modifications on terminal devices. With interaction between Layers 2 and 3, the proposed scheme accelerates the handover control procedures. It also enables a mobile subscriber to select a target network for a vertical handover with consideration of not only wireless signal strength but also user preference and quality-of-service status. The proposed scheme addresses the well-known problems of the Mobile IP-based approaches, triangular routing and bottleneck at the home agent, since it establishes a data tunnel for a mobile node along the shortest path between two different access networks. The simulation and experimental results indicate that our scheme provisions more efficient performance than the existing approaches in terms of handover latency, data packet loss, data delivery latency and load balancing. 相似文献
10.
Real-time payments for mobile IP 总被引:2,自引:0,他引:2
The mobile IP protocol has evolved from providing mobility support for portable computers to support for wireless handheld devices with high mobility patterns. A new category of micromobility protocols has been proposed to deal with the increased signaling loads that will be generated with large populations of such devices on a network. We argue that the authentication schemes presently employed in these networks do not scale well for large numbers of nodes, and that the lack of accounting procedures prevents the mass deployment of these networks. We envisage that future access networks will be operated by independent service providers, who will charge users for access to services in the fixed network but may not have long-term contractual relationships with them. These access networks may also employ a variety of micromobility protocols for fast handover support. We present a scheme based on hash chains, which allows for fast authentication of datagrams for secure updating of router entries within the access network, and real-time accounting of network usage by mobile nodes. Such a system will alleviate problems of fraud in mobile networks and eliminate the need for interoperator billing agreements. 相似文献
11.
通过对无线通信网络的体系结构,运营方式,切换技术实现细节等方面的分析,研究和探讨异构网络之间的切换技术,最终提出一个面向下一代无线通信网络的新型的基于IP的综合切换(IH)框架,以实现全球无线网络覆盖范围的低时延、高带宽、宽切换域、开销低和QoS保证的不同网络间顺畅的无缝切换。 相似文献
12.
Over the last decade, we have witnessed a growing interest in the design and deployment of various network architectures and
protocols aimed at supporting mobile users as they move across different types of networks. One of the goals of these emerging
network solutions is to provide uninterrupted, seamless connectivity to mobile users giving them the ability to access information
anywhere, anytime. Handoff management, an important component of mobility management, is crucial in enabling such seamless
mobility across heterogeneous network infrastructures. In this work, we investigate the handoff performance of three of the
most widely used mobility protocols namely, Mobile IP, Session Initiation Protocol (SIP), and Stream Control Transmission
Protocol (SCTP). Our empirical handoff tests were executed on an actual heterogeneous network testbed consisting of wired,
wireless local area, and cellular networks using performance metrics such as handoff delay and handoff signaling time. Our
empirical results reveal that Mobile IP yields the highest handoff delay among the three mobility protocols. In addition,
we also found that SIP and SCTP yield 33 and 55% lower handoff delays respectively compared to Mobile IP. 相似文献
13.
Bin Liu Nadia Boukhatem Philippe Martins Philippe Bertin 《Wireless Communications and Mobile Computing》2014,14(5):565-582
Next generation mobile networks will provide seamless mobility between existing cellular systems and other wireless access technologies. To realize a seamless vertical handover (inter‐radio access technology handover) among these different access technologies, a multi‐interfaced mobile station (i.e., multihomed) is a good approach to provide better handover performance in terms of packet loss rate and handover latency. In this article, we propose a novel layer 2 multihoming approach for inter‐radio access technology handover between Universal Mobile Telecommunications System (UMTS) and Worldwide Interoperability for Microwave Access (WiMAX) in both integrated and tight coupling architectures. This layer 2 multihoming approach has the ability of enabling either soft handover or make‐before‐break handover to adapt to mobility scenarios for the sake of a lossless and short latency handover procedure. Our simulation results show that, in case of handover from UMTS to WiMAX for transmission control protocol (TCP) traffics, the layer 2 multihoming approach can achieve a lossless and zero latency handover procedure by enabling soft handover. In case of handover from WiMAX to UMTS, because of the fact that the performance gain of soft handover is more affected by the differences of bandwidth and transmission delay between these wireless links, the make‐before‐break handover is preferred to achieve lossless and short latency handover procedure. Copyright © 2012 John Wiley & Sons, Ltd. 相似文献
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The convergence of multitude radio access networks forming a cluster of seamless heterogeneous wireless environment has made the wireless communication industry meet the paradigm of always best connected, where various mobile devices are able to access numerous types of applications and services. However, achieving such landmarks could not be possible without difficulties which this paper tries to highlight some of the technical challenges underlying seamless vertical handover. It provides a general overview of the mobility management process including a brief on multi-homing mobility protocol and focuses on vertical handover decision making techniques, hi ghlighting some radio interface standar and analysed some handover approaches. The paper proposes fast intelligent inter-layer network selection as a new handover approach to select the best network among the candidate networks, where Quality of Service, handover delay and improved data bit rates are set to be achieved. 相似文献
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17.
A smart handover prediction system based on curve fitting model for Fast Mobile IPv6 in wireless networks
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Ali Safa Sadiq Kamalrulnizam Abu Bakar Kayhan Zrar Ghafoor Jaime Lloret SeyedAli Mirjalili 《International Journal of Communication Systems》2014,27(7):969-990
Seamless handover process is essential in order to provide efficient communication between mobile nodes in wireless local area networks. Despite the importance of a signal strength prediction model to provide seamless handovers, it is not embedded in standard mobility management protocols. In this article, we propose a smart handover prediction system based on curve fitting model to perform the handover (CHP) algorithm. The received signal strength indicator parameter, from scanning phase, is considered as an input to the CHP in order to provide a prediction technique for a mobile node to estimate the received signal strength value for the access points in the neighborhood and to select the best candidate access point from them in an intelligent way. We implemented the proposed approach and compared it with standard protocols and linear regression‐based handover prediction approach. Simulation results in complex wireless environments show that our CHP approach performs the best by predicting the received signal strength value with up to 800 ms in advance from real obtained value via scanning phase. Moreover, our CHP approach is the best in terms of layer 2 and overall handover latency, in comparison with standard protocols and linear regression approach, respectively. Copyright © 2012 John Wiley & Sons, Ltd. 相似文献
18.
Rodrygo Torres Cordova Paulo R. L. Gondim Yarisley P. Llerena Jaime Lloret 《International Journal of Communication Systems》2019,32(17)
Mobility management applied to the traditional architecture of the Internet has become a great challenge because of the exponential growth in the number of devices that can connect to the network. This article proposes a Software‐Defined Networking (SDN)‐based architecture, called SDN‐DMM (SDN‐Distributed Mobility Management), that deals with the distributed mode of mobility management in heterogeneous access networks in a simplified and efficient way, ensuring mainly the continuity of IP sessions. Intent‐based mobility management with an IP mapping schema for mobile node identification offers optimized routing without tunneling techniques, hence, an efficient use of the network infrastructure. The simplified mobility control API reduces both signaling and handover latency costs and provides a better scalability and performance in comparison with traditional and SDN‐based DMM approaches. An analytical evaluation of such costs demonstrated the better performance of SDN‐DMM, and a proof of concept of the proposal was implemented in a real environment. 相似文献
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In this paper, we introduce a session key distribution mechanism for fast secure handover in wireless mobile networks. The proposed mechanism is based on the stream control transmission protocol in where a mobile node actively changes its IP address without its connection loss. When a mobile node moves between different access routers, the required session key at a new access router is distributed previously through the tunnel established between the previous access router and the new access router. Due to the reduced key distribution time, the mobile node achieves its secure seamless handover. The provided performance analysis proves that the proposed mechanism provides the reduced signaling cost compared to existing mobility protocols. In addition, the proposed mechanism reduces the handover latency so that the reduced amount of packet loss provides the stable handover performance for real-time applications. 相似文献