A neighbor caching mechanism for fast handoff in IEEE 802.11 wireless network
碩士 === 國立東華大學 === 電機工程學系 === 94 === Multimedia is a delay sensitive application in internet. And what is more, because mobile station is moving all the time causing the consequent handoff processes inevitable in wireless network environment. Since the handoff processes tend to break the communicatio...
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ndltd-TW-094NDHU54420502015-12-16T04:39:02Z http://ndltd.ncl.edu.tw/handle/09997524414866393290 A neighbor caching mechanism for fast handoff in IEEE 802.11 wireless network 在IEEE802.11無線網路環境下,使用NeighborGraph快取機制之快速換手 Yung-Chih Tseng 曾勇智 碩士 國立東華大學 電機工程學系 94 Multimedia is a delay sensitive application in internet. And what is more, because mobile station is moving all the time causing the consequent handoff processes inevitable in wireless network environment. Since the handoff processes tend to break the communication, main goal of this thesis is to reduce the break time and arrival delay while using the multimedia applications in internet. In this paper, we proposed the Neighbor Graph plus the Cache mechanism to reduce the probing latency. The NCG can save the related information of channel and Mac-address of Neighbor AP that are gathered during Neighbor Graph establishment, later, we classified The signal strength are classified to level 1 to 6 that can later be used in the next handoff, to perform fast-handoff. As result, greatly reduce the handoff latency. We used the OPNET Modeler 11.0 as simulation tool to verify. In the simulation, we proposed 3 scenarios to analyze and discuss. The simulation results show the improvement of probing latency by using Neighbor Cache Graph method compare with conventional Layer 2 handoff methods while VoIP applications are running under in their environments. Han-Chieh Chao 趙涵捷 2006 學位論文 ; thesis 71 en_US |
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碩士 === 國立東華大學 === 電機工程學系 === 94 === Multimedia is a delay sensitive application in internet. And what is more, because mobile station is moving all the time causing the consequent handoff processes inevitable in wireless network environment. Since the handoff processes tend to break the communication, main goal of this thesis is to reduce the break time and arrival delay while using the multimedia applications in internet.
In this paper, we proposed the Neighbor Graph plus the Cache mechanism to reduce the probing latency. The NCG can save the related information of channel and Mac-address of Neighbor AP that are gathered during Neighbor Graph establishment, later, we classified The signal strength are classified to level 1 to 6 that can later be used in the next handoff, to perform fast-handoff. As result, greatly reduce the handoff latency.
We used the OPNET Modeler 11.0 as simulation tool to verify. In the simulation, we proposed 3 scenarios to analyze and discuss. The simulation results show the improvement of probing latency by using Neighbor Cache Graph method compare with conventional Layer 2 handoff methods while VoIP applications are running under in their environments.
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author2 |
Han-Chieh Chao |
author_facet |
Han-Chieh Chao Yung-Chih Tseng 曾勇智 |
author |
Yung-Chih Tseng 曾勇智 |
spellingShingle |
Yung-Chih Tseng 曾勇智 A neighbor caching mechanism for fast handoff in IEEE 802.11 wireless network |
author_sort |
Yung-Chih Tseng |
title |
A neighbor caching mechanism for fast handoff in IEEE 802.11 wireless network |
title_short |
A neighbor caching mechanism for fast handoff in IEEE 802.11 wireless network |
title_full |
A neighbor caching mechanism for fast handoff in IEEE 802.11 wireless network |
title_fullStr |
A neighbor caching mechanism for fast handoff in IEEE 802.11 wireless network |
title_full_unstemmed |
A neighbor caching mechanism for fast handoff in IEEE 802.11 wireless network |
title_sort |
neighbor caching mechanism for fast handoff in ieee 802.11 wireless network |
publishDate |
2006 |
url |
http://ndltd.ncl.edu.tw/handle/09997524414866393290 |
work_keys_str_mv |
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