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The Research of Mobile IPv6 Handoff Principle and Key Technology

Author: LiGuangZhe
Tutor: LiLing
School: Jilin University
Course: Electronics and Communication Engineering
Keywords: IPv6 exchange service quality safety NS
CLC: TN929.5
Type: Master's thesis
Year: 2009
Downloads: 154
Quote: 1
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Abstract


Recently, internet has become a necessary part of daily life. Along with the fast development of mobile technology and the broad application, cellphone and notebook PC and mobile equipments, people have strong wish to keep internet in touch and communicate continuously during remotion, so that people can share the resource and service of internet whenever at any place. So internet must support the mobile property.Because of the IPv4 shortcomings, such as lacking of the address space, that make it difficult to support lager nodes. Because IPv4 does not have good expansibility, it can not become a uniform plat root to make each kind of net equipment to link internet. Compare with IPv4, IPv6 has not only enough address, but also using the auto configured address, the configuration of address system can make the mobile communication easy. The mobile property of IPv6 has become the key technology, so it is necessary to have a good research on IPv6. There are 7chapters of this article which introduced the handoff principle and key technology.Chapter 1, mainly introduced the background and status quo of IPv6 and also pointed the content.Chapter 2, researched the theory of IPv6, expatiated the basic conceptions and the operation, analied the traits.Chapter 3, researched the exchange technology, discussed the problems and compared the improvement methods.Chapter 4, researched the service quality of IPv6, introduced the primary Qos technology including integrate and distinguished service and frame of Inteserv-Differv.Chapter 5, researched the safety, and analied the primary threats. Chapter 6, researched the net simulation emulation, introduced the net simulation tool NS-2.Chapter 7, sum up the whole article.Main works and conclusions:(1) IPv6 have some characteristics such as it can allot address automatically , a neighbor discover system, it is transparent for the protocol layers higher than IP (layer), which enables the procedures running at this node available without amending or allotting when the nodes moving between different branch webs.(2) Each exchange plan of IPv6 has its own advantages and disadvantages. Quick exchange plan performs well in decreasing time delay and data losing, but it does bad in signaling load. Different grades managing plan for exchange performs well in signaling load, but it does bad in decreasing time delay and data losing. Binding exchange plan performs well in decreasing time delay and data losing as well as outer region signaling load, but its device is very complicated. The MPLS type performs well in signaling load and decreasing data losing, the performance of moving tags type is average.(3) As comprehensive service can not be enlarged or expended, it can only be used in small scope branch webs of IP. Differentiating service can not be used independly because it lacks signaling transmit from side to side and can not assure the transmit quality. The quality of Layering Inteserv-Diffserv structure service relatively gets a better assurance.(4) Combining IPSec and Fire Wall can both enhance safety and meet the requirement of confidential communication of the terminal core.

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CLC: > Industrial Technology > Radio electronics, telecommunications technology > Wireless communications > Mobile Communications
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