運用IEEE 802.21換手機制於異質性無線網路

A Handover Mechanism over Heterogeneous Wireless Networks Using IEEE 802.21

王朝棨(Chau-chi Wang)

指導教授 ： 張林煌

朝陽科技大學/資訊學院/網路與通訊研究所/碩士(2009年)

摘要

隨著無線網路設備的佈署與應用，次世代的行動終端設備也將支援各種無線傳輸媒介(如WLAN、WiMAX、3G等)，來與不同的網路存取服務進行傳輸。然而如何在此異質性網路環境下，讓行動終端設備實現無縫式換手服務將是很重要的問題。為解決異質性網路換手問題，電子電機工程師學會(Institute of Electrical and Electronics Engineers, IEEE)於2004年2月成立IEEE 802.21工作小組，該工作小組主要目的為訂定一個整合異質性網路的標準，提供在802系列及非802系列網路中有效的垂直換手機制，並稱之為媒介獨立換手(Media Independent Handover, MIH)。因此，在本論文中，我們將探討利用MIH所提出的換手機制，使行動終端設備漫遊在異質性網路時，能有較好的傳輸效能並減少封包遺失，以達到無縫式換手服務。

關鍵字

無縫式換手 ； 異質性網路 ； MIH ； IEEE 802.21

並列摘要

With application and development of wireless base station (BS), the next-generation mobility management will support media of diverse wireless transmission (for instance, WLAN, WiMAX and 3G etc.), with different transmission network access services. However, how to make mobile device management to achieve seamless handover under heterogeneous networks environment will become an important issue. Institute of Electrical and Electronics Engineers (IEEE) established IEEE 802.21 working group in Feb. 2004, for solving the heterogeneous network handover problems. The main purpose of this working group was set up a standard for integrating heterogeneous network and providing efficiently vertical handover mechanism in heterogeneous IEEE 802 networks and cellular networks (call Media Independent Handover, MIH). Therefore, we will elaborate MIH’s vertical handover mechanism which could make mobile station (MS) have better performances on transmission and reduce packet loss, so that achieve the seamless handover when mobile device management under heterogeneous networks environment.

並列關鍵字

MIH ； IEEE 802.21 ； heterogeneous networks ； seamless handover

參考文獻

[2] IEEE std 802.16-2004, “IEEE Standard for Local and metropolitan area networks - Part 16: Air Interface for Fixed Broadband Wireless Access Systems,” October 2004.

[4] IEEE std 802.21-2008, “IEEE Standard for Local and metropolitan area networks - Part 21: Media Independent Handover Services,” January 2009.

[16] D. Johnson, C. Perkins and J. Arkko, “Mobility Support in IPv6,” IETF Request for Comments 3775, June 2004.

[18] J. Postel, “User Datagram Protocol,” IETF Request for Comments 768, August 1980.

[19] J. Postel, “Transmission Control Protocol,” IETF Request for Comments 793, September 1981.