• Title/Summary/Keyword: Network-based mobility

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Hybrid Centralized-Distributed Mobility Management Scheme in SDN-Based LTE/EPC Networks (SDN 기반 LTE/EPC 네트워크에서 하이브리드 중앙-분산 이동성 관리 기법)

  • Lim, Hyun-Kyo;Kim, Yong-hwan;Han, Youn-Hee
    • The Journal of Korean Institute of Communications and Information Sciences
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    • v.42 no.4
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    • pp.768-779
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    • 2017
  • Recently, the great number of mobile devices causes excessive data/control traffic problems in the centralized LTE/EPC network and such dramatically increased traffic is emerging as a critical issue. In the Centralized Mobility Management (CMM) based LTE/EPC network, the Packet Data Network Gateway (P-GW) plays the centralized mobility anchor role and it accommodates most of data traffic. To solve this problem, the IETF has proposed the Distributed Mobility Management (DMM) scheme, but it has only focused on the data traffic load balancing and could not solve the control traffic overload problem. In this paper, therefore, we propose a new SDN based hybrid CMM/DMM Mobility Management (C-DMM) architecture based on Packet Network Edge Gateway (P-EGW), and introduce a selection scheme between CMM and DMM according to a device's mobility and the number of PDN connections. In order to prove the efficiency of the proposed architecture and scheme, we compare the data traffic processing load and the control traffic processing load over each scheme by emulating them in the ONOS controller and the Mininet environment.

Analysis of a Decentralized Mobility Management Support for u-City Wireless Network Infrastructure

  • Caytiles, Ronnie D.;Park, Byungjoo
    • Journal of Advanced Information Technology and Convergence
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    • v.10 no.2
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    • pp.73-81
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    • 2020
  • The number of mobile devices roaming into a ubiquitous city (u-city) continues to rise as wireless systems have been widely deployed. The number of mobile devices also varies with time, and they tend to frequently change their locations. In addition, the available wireless access networks may belong to different domains, administrations, management, and internet service providers (ISPs). A fusion of overlapping heterogeneous wireless access networks (e.g., WiMax, Wi-Fi, LTE, etc.) serves the u-city in order to reach different coverage. In this context, technical challenges arise in mobility management for heterogeneous networks to realize their potential coverage and capacity benefits. This paper deals with the analysis of a decentralized mobility management support for u-City wireless network infrastructure. This scheme takes advantage of the features of the fully-distributed model of networked-based mobility management protocol to alleviate and realize the ubiquitous requirements of a u-City.

Network Mobility Support Using Router-based Binding Update Scheme in Hierarchical Mobile IP (Hierarchical Mobile IP에서 라우터기반 바인딩 업데이트 방법을 이용한 네트워크 이동성 지원)

  • Kim, Ju-Hyun;Lee, Kyung-Geun
    • The Journal of Korean Institute of Communications and Information Sciences
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    • v.34 no.7B
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    • pp.668-676
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    • 2009
  • Hierarchical Mobile 1Pv6(HM1Pv6) have been proposed by IETF(Internet Engineering Task Force) beginning from Mobile 1Pv6 for mobility support in IP networks, however these researches relying on client based mobility support have not been drawn attention due to excessive consumption of wireless resources and long handover delay. In this paper, we propose the Router-based Binding Update(RBU) scheme to solve problems in existing client-based mobility support schemes. The router registers location information of mobile nodes through Neighbor Discovery protocol without additional codes for the RBU scheme to a terminal operated by existing HMlPv6. By using this the RBU scheme is designed so that it can support partial nupport based mobility and reduce handover latency rather than using HMIPv6. It is analysed and compared with existing HMIPv6 to verify efficiency of the RBU scheme. As a result, the RBU scheme has outperformed existing HMIPv6 by 15% in terms of macro handover delay especially when long delay on wireless links exists.

Location management using user mobility pattern in mobile IP and WCDMA network (Mobile IP 와 WCDMA 망에서의 사용자 이동 pattern 에 따른 location management)

  • Kim, Seo-Young;Kim, Jeong-Ho
    • Proceedings of the IEEK Conference
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    • 2005.11a
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    • pp.229-232
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    • 2005
  • Many kinds of communication systems will be co-existed in the next generation communication environment. Location management will be one of the most important strategies in the future communication network. Whether the user gets the service in any kind of communication system, it is required to know the location of the user properly and manages this location information efficiently. In this paper, mobile IP and WCDMA systems are considered as next generation communication systems. We improve the performance of communication in heterogeneous networks adjusting the conventional region-based location management strategy in homogeneous network. This strategy can be adjusted dynamically to the communication system on the basis of packet-to-mobility ratio (PMR) in mobile IP system or call-to-mobility ratio (CMR) in WCDMA system, lots of different system parameters, and movement pattern of the user. This can be also based on the performance analysis with considering signaling cost and database access cost.

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SDN Based Mobility in Enterprise Wireless Network (엔터프라이즈 무선네트워크에서 SDN 기반 이동성 연구)

  • Challa, Rajesh;Yeom, Sanggil;Choo, Hyunseung
    • Proceedings of the Korea Information Processing Society Conference
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    • 2015.10a
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    • pp.335-336
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    • 2015
  • Seamless mobility is one of the most crucial feature of telecommunication industry. Researches are going on in full swing to deal with this feature in most efficient manner. Software Defined Networking (SDN) is seen as the next generation paradigm which can facilitate seamless mobility across heterogeneous networks by segregating the control plane and data plane functionalities, and logically centralizing the control plane. In this paper, we propose a simplified Layer 2 handover mechanism for enterprise wireless networks, based on SDN framework. We present a network assisted L2 handover method using the IEEE 802.21 Media Independent Handover (MIH) protocol and SDN concepts, to achieve seamless mobility across heterogeneous networks.

A Study of a Seamless Handover Support for WSN based Information Transmission in Structural Health Monitoring Systems

  • Park, Byungjoo
    • International journal of advanced smart convergence
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    • v.7 no.4
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    • pp.174-184
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    • 2018
  • The efficiency and safety of social-overhead capital (SOC) public infrastructures have become an eminent social concern. In this regard, a continuous structural health monitoring has been widely implemented to oversee the robustness of such public infrastructures for the safety of the public. This paper deals with the analysis of a distributed mobility management (DMM) support for wireless sensor network (WSN) based information transmission system. The partial DMM support separates the data and control plane infrastructures, wherein, the control plane is managed by a particular mobility management network entity, while the data plane is distributed by the mobility anchors. The system will be able to optimize the information transmission for a wireless structural health monitoring of SOC public infrastructures specifically designed for bridges, and thus, guarantees the safety of public commuters.

Enhancement of Return Routability Mechanism for Optimized-NEMO Using Correspondent Firewall

  • Hasan, Samer Sami;Hassan, Rosilah
    • ETRI Journal
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    • v.35 no.1
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    • pp.41-50
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    • 2013
  • Network Mobility (NEMO) handles mobility of multiple nodes in an aggregate manner as a mobile network. The standard NEMO suffers from a number of limitations, such as inefficient routing and increased handoff latency. Most previous studies attempting to solve such problems have imposed an extra signaling load and/or modified the functionalities of the main entities. In this paper, we propose a more secure and lightweight route optimization (RO) mechanism based on exploiting the firewall in performing the RO services on behalf of the correspondent nodes (CNs). The proposed mechanism provides secure communications by making an authorized decision about the mobile router (MR) home of address, MR care of address, and the complete mobile network prefixes underneath the MR. In addition, it reduces the total signaling required for NEMO handoffs, especially when the number of mobile network nodes and/or CNs is increased. Moreover, our proposed mechanism can be easily deployed without modifying the mobility protocol stack of CNs. A thorough analytical model and network simulator (Ns-2) are used for evaluating the performance of the proposed mechanism compared with NEMO basic support protocol and state-of-the-art RO schemes. Numerical and simulation results demonstrate that our proposed mechanism outperforms other RO schemes in terms of handoff latency and total signaling load on wired and wireless links.

An Efficient Location Management Scheme in the Network Mobility (Network Mobility 환경에서의 효율적인 위치관리 기법)

  • Kim Hye-Young;Song Uy-Seang;Gil Joon-Min;Hwang Chong-Sun
    • Journal of KIISE:Information Networking
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    • v.32 no.2
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    • pp.190-202
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    • 2005
  • Mobile nodes are change their point of attachment dynamically such as networks deployed in aircraft, boats, trains, and cars. These mobile nodes move together and share the same nobility properties. Therefore, this paper addresses an efficient location management scheme based on collaboration of mobile nodes to a mobile network. We propose a scheme that combines multicast routing with Mobile IPv6 to support mobile network in the internet. This paper also tests the usefulness of our proposed method using analytical models and compares the results with our scheme and HMIPv6(Hierarchical Mobile IPv6) and Network Mobility(NEMO).

Mobile IP on MPLS VPN (MPLS VPN에서의 Mobile IP)

  • Lee, Young-Seok;Oh, Myoung-Hwan;Choi, Hoon
    • The Journal of Korean Institute of Communications and Information Sciences
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    • v.28 no.8B
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    • pp.738-749
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    • 2003
  • Mobile IP protocol introduced in RFC3344 provides a node of the mobility service through IP tunneling mechanism in the IP networks. In this paper, we describe a method to provide a mobility service for VPN(Virtual Private Network) nodes on the MPLS(Multiprotocol Label Switching) network. The MPLS VPN considered here is based on "BGP/MPLS VPNs" presented in RFC2547. PE(Provider′s Edge) routers, which are able to provide VPN services on the MPLS network, are associated with mobility agents to support Mobile IP This proposed mechanism applies when a VPN node moves to other site of the same VPN, or when it moves to other site of a different VPN, or to the ordinary Internet site. We implemented this mechanism in PE routers and analyzed the performance of the MPLS VPN with mobility support on the testbed.

Design and Comparative Performance Analysis of Fully Distributed Mobility Management Scheme on PMIPv6 (PMIPv6 기반의 완전 분산형 이동성 관리 기법의 설계 및 성능 비교 분석)

  • Lee, Han-Bin;Lee, Jong Hyup
    • Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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    • 2016.05a
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    • pp.220-223
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    • 2016
  • Explosive growth of smartphone-based mobile nodes has increased exponentially the mobile data traffic on the Internet. To reduce the traffic load on the network and to support the seamless mobility of the mobile nodes, the IETF and 3GPP have standardized a number of mobility management mechanisms. More recently, they are making an effort to find some schemes to distribute the networking systems that involve in the mobility management in order to assure the scalability and the reliability of the network. In IETF, DMM concept for the distributed mobility management on the Internet is being discussed. Specifically, the DMM can be classified into the partially distributed management and fully distributed management. In this paper, we propose a fully distributed mobility management scheme (FuDMM) on PMIPv6-based network by applying the extended NDP. We also present the performance of FuDMM using the comparative analysis with the existing ones.

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