ABSTRACT
The mass deployment of IEEE 802.11 based wireless local area networks (WLAN), and increased sales in portable devices supporting WLAN, have resulted in an urgent need to support real time applications while wireless users are on the move. This critical support necessitates research into current WLAN roaming capabilities. This paper discusses how WLAN roaming capabilities are affected by new standards such as security (IEEE 802.11i) and quality of service (IEEE 802.11e), and describes the new IEEE 802.11r standard, which was developed to address issues faced by real time applications that implement the security and quality of service enhancements. The performance evaluation of 802.11r prototype and the 802.11i baseline mechanisms show that a voice application using 802.11r can achieve significantly shorter transition time and reduced packet loss during AP-AP transition, and can therefore realize a noticeable improvement in voice quality.
- IEEE Std 802.11, IEEE Standard for Wireless LAN Medium Access Control (MAC) and Physical Layer Specifications (With Amendment 1 - 4), 2003Google Scholar
- IEEE Std 802.11i, IEEE Standard for Wireless LAN Medium Access Control (MAC) and Physical Layer Specifications (Amendment 6: Medium Access Control Security Enhancements), 2004Google Scholar
- IEEE Std 802.11r /D01.0, Draft Amendment to Standard for Information Technology - Telecommunications and Information Exchange Between Systems - LAN/MAN Specific Requirements - Part 11: Wireless Medium Access Control (MAC) and Physical Layer Specifi cations: Amendment 8: Fast BSS Transition, 2005Google Scholar
- IEEE Std 802.11e Draft 13, IEEE Standard for Wireless LAN Medium Access Control (MAC) and Physical Layer Specifications (Amendment: Quality of Service (QoS) Enhancement), 2005Google Scholar
- IEEE Std 802.1X, IEEE Standard for Port-Based Network Access Control, 2004Google Scholar
- RFC 2865, IETF Standard for Remote Authentication Dial In User Service (RADIUS), June 2000Google Scholar
- RFC 2246, IETF Standard for Transport Layer Security (TLS), Jan 1999Google Scholar
- Intel White Paper, "Overcoming Barriers to High-Quality Voice over IP Deployments"Google Scholar
- Nancy Cam-Winget, Russell Housley, David Wagner and Jesse Walker, Security flaws in 802.11 data link protocols, in Communications of the ACM 46(5): 35--39 (2003) Google ScholarDigital Library
- hostAP driver and WPA Supplicant, available from website: "hostap.epitest.fi"Google Scholar
Index Terms
- Performance study of fast BSS transition using IEEE 802.11r
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