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3G-WLAN converged network switching technology Research and Implementation

Author: XuLing
Tutor: MaJianFeng
School: Xi'an University of Electronic Science and Technology
Course: Computer System Architecture
Keywords: 3G WLAN Mobile IP Vertical handoff Secure Access
CLC: TN929.5
Type: Master's thesis
Year: 2009
Downloads: 129
Quote: 3
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Abstract


WLAN data transfer rate is high , but the wireless coverage area is small, poor support for mobility . Conversely , 3G network mobility support is better , but the data transfer rate is low . 3G and WLAN network integration can be achieved between the two complement each other, has become a next-generation communications networks inevitable trend of development . Implement adaptive mobile terminal access a variety of network security to protect mobile terminals in heterogeneous wireless networks switched service quality will become a research hotspot. This paper studies the 3 G-WLAN interconnection model converged network security and seamless handover , as follows : ( a ) for an existing 3G-WLAN converged network architecture for mobility support poor situation, design a 3G- based Mobile IP WLAN convergence network interconnection model is difficult to solve the terminals in heterogeneous wireless networks adaptive switching problem . ( 2 ) Since the traditional handover decision algorithm determines inaccurate ping-pong effect caused by the problem , combining gray prediction and fuzzy logic, the design of a high accuracy vertical handoff algorithm . ( 3 ) in the 3 G-WLAN converged network interconnection model , based on the design of a mobile IP -based fast and smooth vertical handoff scheme , a good solution to the traditional vertical handoff scheme packet loss rate, delay big problem. ( 4 ) In order to verify the proposed switching scheme , this paper is designed to switch programs and integrated security certification, design and implement the integration of network security access platform to verify the designed network interconnection model and switching algorithm . The results show that the designed network interconnection model , switching algorithm and the switching program has a strong compatibility , low delay , packet loss rate advantages , while reducing the ping-pong effect , to ensure that the mobile terminals in 3G-WLAN converged network when moving communication quality.

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