A smooth handoff scheme using IEEE802.11 triggers––design and implementation

Cleyn, Peter De; Wijngaert, Nik Van den; Cerdà, Llorenç; Blondia, Chris

doi:10.1016/j.comnet.2004.03.012

Cited by 14 publications

(6 citation statements)

References 2 publications

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“…Using Pre-Registration protocol from LLH is questionable with IEEE 802.11 as the scanning phase prevents MH from selecting the new Access Point (nAP) without leaving our current point of attachment [2]. On the other hand, establishing the tunnel between oAP and nAP delays the MIP registration.…”

Section: Related Workmentioning

confidence: 99%

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Simultaneous handover scheme for IEEE 802.11 WLANs with IEEE 802.21 triggers

Machan

Woźniak

2009

Telecommun Syst

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Handover performance in wireless networks is important, especially nowadays, when multimedia services are becoming increasingly available over the wireless devices. However, users expect uncompromised mobility when using the service. Thus, the support of multimedia services is not possible if handover is inefficient. At the same time it is clear that a strict separation between IP Layer and the Link Layer results in built-in sources of delay. The paper discusses the IEEE 802.11 and Mobile IPv4 handover performance in practical scenarios. We introduce a new simultaneous handover scheme with IEEE 802.21 triggers. In order to verify the handover performance, simulation experiments have been conducted, whose results are also presented and discussed.

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Section: Related Workmentioning

confidence: 99%

“…The scanning delay can be represented by (2). T switch parameter refers to the switch time to a new frequency, resynchronize and start demodulating packets in a new channel.…”

Section: Ieee 80211 Handovermentioning

confidence: 99%

Simultaneous handover scheme for IEEE 802.11 WLANs with IEEE 802.21 triggers

Machan

Woźniak

2009

Telecommun Syst

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“…Work on reducing MIPv4 handover latency has been done in Refs. [4,23] and they also consider L2 triggers as a main factor for the smooth handover scheme. It is also proved that L2 triggers can have effects on L3 handover performance in Refs.…”

Section: Related Workmentioning

confidence: 99%

Seamless handover support over heterogeneous networks using FMIPv6 with definitive L2 triggers

Kim

Kwon

Suh

2007

Wireless Pers Commun

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Various wireless communication systems have been developed and will be integrated into an IP-based network to offer end users the Internet access anytime and anywhere. In heterogeneous multi-access networks, one of main issues is to manage nodes' mobility with session continuity and minimal handover latency. In order to support the mobility of mobile nodes, MIPv6 has been proposed by IETF. Even though MIPv6 provides a solution to handling nodes' mobility in IPv6 networks, there is a significant problem due to its inability to support a seamless handover caused by long latency and high packet losses during a handover. FMIPv6 has been proposed to reduce MIPv6 handover latency by using an address preconfiguration method with the aid of L2 triggers. Current research defines a general L2 trigger model for seamless handover operation, but it does not address the exact timing and definitive criteria of L2 triggers which causes a significant effect on the handover performance of FMIPv6. This paper considers the available timing and accurate criteria of L2 triggers. With the definitive L2 triggers, we present a practical handover scenario to integrate L2 and L3 layers for low handover latency and low number of packet losses during a handover. We also study the impact of definitive L2 triggers on the handover performance of the FMIPv6 protocol in real testbeds and prove that the FMIPv6 protocol performs its handover operation prior to the L2 handover and obtains a seamless handover.

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“…In [2], [3], a cost based function that effects the characteristics of different networks is used in the handover decision algorithms and a network elimination factor is introduced to exclude those networks that cannot meet the QoS constraints for specific services. Several VHO schemes are proposed in [4], [5] trying to reduce the latency, packet loss and generally optimize the handover procedure. A segment selection algorithm based on the fuzzy multiple objective decision making system is presented by P. Chan et al [6].…”

Section: Introductionmentioning

confidence: 99%