• Title, Summary, Keyword: Handover Latency

Search Result 160, Processing Time 0.055 seconds

Analysis of Handover Latency for Mobile IPv6 and mSCTP

  • Kim, Dong-Phil;Koh, Seok-Joo
    • Journal of Information Processing Systems
    • /
    • v.4 no.3
    • /
    • pp.87-96
    • /
    • 2008
  • This paper analyzes the handover latency of Mobile IP and mobile SCTP over IPv6 networks. The analytical results are compared with the performance by experiment over Linux testbed. For analysis, we consider the two handover scenarios: horizontal handover and vertical handover. From the results, we see that mSCTP can provide smaller handover latency than Mobile IP. Moreover, mSCTP can give much smaller handover latency for vertical handover, compared to horizontal handover.

Seamless Mobility Management in IP-based Wireless/Mobile Networks with Fast Handover

  • Park, Byung-Joo;Hwang, Eun-Sang;Park, Gil-Cheol
    • KSII Transactions on Internet and Information Systems (TIIS)
    • /
    • v.3 no.3
    • /
    • pp.266-284
    • /
    • 2009
  • The challenges of rapidly growing numbers of mobile nodes in IPv6-based networks are being faced by mobile computing researchers worldwide. Recently, IETF has standardized Mobile IPv6 and Fast Handover for Mobile IPv6(FMIPv6) for supporting IPv6 mobility. Even though existing literatures have asserted that FMIPv6 generally improves MIPv6 in terms of handover speed, they did not carefully consider the details of the whole handover procedures. Therefore, in conventional protocols, the handover process reveals numerous problems manifested by a time-consuming network layer based movement detection and latency in configuring a new care of address with confirmation. In this article, we study the impact of the address configuration and confirmation procedure on the IP handover latency. To mitigate such effects, we propose a new scheme which can reduce the latency taken by the movement detection, address configuration and confirmation from the whole handover latency. Furthermore, a mathematical analysis is provided to show the benefits of our scheme. In the analysis, various parameters are used to compare our scheme with the current procedures, while our approach is focused on the reduction of handover latency. Finally, we demonstrate total handover scenarios for the proposed techniques and discussed the major factors which contribute to the handover latency.

A study on fast handover scheme for NEMO in heterogeneous network (NEMO 환경에서 이종망간 빠른 핸드오버 제공 방안 연구)

  • Choi, Ji-hyoung;Kim, Dong-il
    • Proceedings of the Korean Institute of Information and Commucation Sciences Conference
    • /
    • /
    • pp.79-81
    • /
    • 2009
  • NEMO is technique to support mobility of a network, not a node, and ensures session continuity for all the nodes in a Mobile Network. However NEMO basic support protocol causes high handover latency, thus it is incongruent real-time services such as VoIP. One of schemes to reduce handover latency is FNEMO. FNEMO that combines conventional NEMO and FMIPv6, reduces latency during the handover, thus it supports fast handover. In this paper, we compare/analyze handover of FNEMO in heterogeneous/homogeneous network, and propose schemes to reduce handover latency.

  • PDF

Reducing Handover Latency through Protocols of IPv6 Mobility Management (IPv6 이동성 관리 프로토콜을 통한 지연 감소)

  • Kim, Kwang-Deok;Kim, Dong-Il
    • Proceedings of the Korean Institute of Information and Commucation Sciences Conference
    • /
    • /
    • pp.43-46
    • /
    • 2008
  • During communication between wireless users, disconnection may occur during the handover process. The high handover latency during the process of handover degrades the service quality of the wireless communications. This problem becomes more crucial if the operation network is transmitting real-time multimedia applications. This paper presents our work on the interworking of protocols in IPv6 mobility management which aims to explore the means to reduce the handover latency. We propose Reducing Handover Latency through Protocols over IPv6 mobility management.

  • PDF

A Scenario for Enhanced Network-based Localized Mobility Management

  • Kim, Dong-Il;Kim, Kwang-Deok
    • Journal of information and communication convergence engineering
    • /
    • v.6 no.3
    • /
    • pp.245-248
    • /
    • 2008
  • Everytime a node moves out of its area, the connection to the node encounters a handover which may cause much latency. NetLMM(Network based Localized Mobility Management) supports the mobility management for such nodes and improves handover latency using MIH(Media Independent Handover) function. In this paper, we add some messages to NetLMM procedure to improve handover latency and analyze its effects through a scenario based approach

Perfomance Evaluation of efficent handover Latency Using MIH Services in MIPv4 (MIH를 이용한 효율적인 MIPv4망의 구성에 관한 연구)

  • Kim, Ki-Yong;Jang, Jong-Wook
    • Proceedings of the Korean Institute of Information and Commucation Sciences Conference
    • /
    • /
    • pp.75-78
    • /
    • 2007
  • Mobile IP provides hand-held devices with mobility which allows the user to do work over the network. However, handover time due transfer between access routers causes network delays and data loss. L2Trigger Handover expects this handover to take place, and executes L3 handover before L2 handover takes place, thereby reducing overall handover latency, although it still is an issue since handover latency between AR is not completely eliminated in L2 trigger handover. In this paper took into consideration where MIH is used in MIPv4 and using MIH Table when handover is about to occur in MN(Mobile Node), thereby pre-fetching data needed by Handover. In this way, when the handover is estimated, it improves the init time that L2trigger had. Furthermore we can find that we can execute the handover with shorten init time in smaller and narrow overlap length

  • PDF

Seamless handover protocol to reduce handover latency (핸드오버 지연 시간을 줄일 수 있는 심리스 핸드오버 프로토콜 제안 및 성능 분석)

  • Jang, Jong-Min;Lee, Yu-Tae;Lee, Soong-Hee;Kim, Dong-Il;Choi, Sam-Gil
    • Journal of the Korea Institute of Information and Communication Engineering
    • /
    • v.13 no.2
    • /
    • pp.277-284
    • /
    • 2009
  • With significant development in wireless communication technologies, the needs to handover from one network to another have grown dramatically. Recently IETF developed MIPv6 and FMIPv6 which are used to handover between different access networks. These handover mechanisms have some known weaknesses. MIPv6 can not serve time-critical application because it causes long handover latency and packet loss. By these reasons, MIPv6 does not guarantee session continuity. FMIPv6 uses handover preparation phase to reduce DAD latency. However FMIPv66 still suffers from long handover latency, because it must perform binding update at the end of handover procedure. In this paper we propose new handover mechanism FMIPv6-PBU which eliminates binding update latency. The proposed mechanism has compatability with lagacy FMIPv6. In this paper propose FMIPv6-PBU handover procedure and explain its procedures and evaluate it with MIPv6 and FMIPv6.

A Proxy Mobile IP based Fast Layer-3 Handover scheme for Mobile WiMAX based Wireless Mesh Networks (Mobile WiMAX 기반의 무선 메쉬 네트워크를 위한 Proxy Mobile IP 기반의 고속 3계층 핸드오버 방안)

  • Kim, Min;Kim, Jong-Min;Kim, Hwa-Sung
    • The Journal of Korean Institute of Communications and Information Sciences
    • /
    • v.35 no.8B
    • /
    • pp.1129-1140
    • /
    • 2010
  • Wireless mesh networks have been widely studied as the next generation technology to solve the problems of conventional wireless networks. Particularly, Mobile WiMAX based wireless mesh networks are noticed due to many advantages. Mobile WiMAX standard provides two kinds of layer-3 handover schemes: Mobile IP and Proxy Mobile IP based handover schemes. MIP based handover scheme has a problem in that it incurs the long handover latency because mobile nodes generate a lot of handover messages. On the other hand, PMIP based handover scheme decreases the handover latency by reducing the number of handover messages, because mobile nodes do not participate in handover procedure. Therefore, layer-3 handover for Mobile WiMAX should be designed based on PMIP. However, conventional PMIP based handover still has latency overhead, because of many message exchanges between PBU and PBA after completing the layer-2 handover. Hence, in this paper, we propose a fast layer-3 handover scheme that achieves the lower handover latency for Mobile WiMAX based wireless mesh networks. Proposed scheme has advantages in terms of handover latency. Simulation results show that proposed scheme achieves low handover latency during the layer-3 handover.

A Study of Mobile IPv6 Fast Handover Algorithms in WLAN Environment (무선랜 환경에서 Mobile IPv6 Fast Handover 알고리즘에 관한 연구)

  • 이재황;김평수;김영근
    • Proceedings of the IEEK Conference
    • /
    • /
    • pp.509-512
    • /
    • 2003
  • 본 논문은 무선랜 환경에서 Mobile IPv6 Node가 이동 시에 발생하는 Handover Latency 를 줄이기 위한 새로운 알고리즘을 제안한다. 현재 Mobile IPv6 Fast Handover Protocol 은 Layer2 에서의 Handover 의 도움을 전제로 하기 때문에 실제 구현상에서 Real-time 이나Delay 에 민감한 Application 에 적용하기 어렵다. 이 문제를 해결하기 위해 무선랜에서 사용하는 Beacon 신호를 이용한 Dominant NAR 알고리즘을 적용하여 MIPv6 Fast Handover 과정을 선 처리하여 Handover Latency를 줄이고자 한다.

  • PDF

A Mobility Control Architecture Suppor ting Fast Handover for Future Internet Networks

  • Nguyen, Khanh-Huy;Hwang, Won-Joo
    • Journal of Korea Multimedia Society
    • /
    • v.15 no.12
    • /
    • pp.1485-1491
    • /
    • 2012
  • In this paper, we address the problem of fast handover support for future internet networks. The current mobility support protocols, for example Proxy Mobile IPv6, follow a centralized architecture in which a mobility controller is used to manage intra-network handovers that gives rise to high handover latency. To handle this problem, we propose a novel distributed mobility control architecture in which gateways in the network can exchange user information with neighbour gateways to support intra-network handovers, the mobility controller is only needed in case of inter-network handovers. Simulation results show that our architecture reduce approximately 20% intra-network handover latency than Proxy Mobile IPv6.