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802.11 Security: Defending the New Network Edge
White Papers There's no question that wireless LAN is getting more secure. The newly ratified 802.11i specification is going a long way towards answering the security concerns that have held back the adoption of 802.11 in the enterprise.
[February 14, 2006, 23:00]
802.11 Wireless LAN White Paper
White Papers Wireless 802.11 specifies a 2.4 GHz operating frequency with data rates of 1 and 2 Mbps using either Direct Sequence Spread Spectrum (DSSS) or Frequency Hopping Spread Spectrum (FHSS). In 802.11 wireless LAN data is encoded using DSSS (Direct...
[November 25, 2003, 3:44]
802.11 DCF Denial of Service Vulnerabilities
White Papers This paper addresses Denial of Service vulnerabilities (DOS) in 802.11 wireless LANs that arise from the 802.11 Distributed Coordination Function (DCF). This paper demonstrates that the DCF is vulnerable to equivalent DOS attacks at both the MAC...
[October 18, 2008, 0:00]
802.11 Wireless LAN Security and the Cisco SWAN Program
White Papers Most people are now well aware of the opportunities 802.11 Wireless LAN (WLAN) networks bring. The advantages start with convenience (which does shade into higher productivity as well). Saving on wiring costs and speed of deployment are two other...
[October 1, 2008, 1:01]
802.11 - A Standard for the Present and Future
White Papers This paper describes IEEE 802.11 standard. The 802.11 family of specifications and 802.1X for authentication build on strong existing standards such as EAP, RADIUS, LDAP, and others to meet these needs.
[January 7, 2008, 4:02]
Optimized Video-Streaming Over 802.11 by Cross-Layer Signaling
White Papers Seamless video streaming over wireless links imposes strong demands on video codecs and the underlying network. It is not sufficient that only the video codec or only the radio adapts to changes in the wireless link quality; efforts should be...
[May 12, 2006, 1:00]
Performance Analysis of the IEEE 802.11 Wireless LAN Standard
White Papers IEEE 802.11 is a relatively new standard for communication in a wireless LAN. Its need arose from the many differences between traditional wired and wireless LANs and the increased need for interoperability among different vendors.
[May 12, 2006, 1:00]
Quality of Service Guarantee on 802.11 Networks
White Papers Rether was originally developed to support guaranteed Quality of Service (QoS) for shared Ethernet LANs. With the growing popularity of wireless LANs, this paper modified the Rether protocol to provide QoS guarantee on wireless networks.
[October 1, 2008, 1:01]
Distributed Channel Assignment in Multi-Radio 802.11 Mesh Networks
White Papers To increase the utilization of the available frequency channel space in 802.11-based wireless mesh networks, recent work has explored solutions based on multi-radio stations. This paper reports on the design and experimental study of a distributed...
[May 24, 2007, 1:00]
Architecture and Algorithms for an IEEE 802.11-Based Multi-Channel Wireless Mesh Network
White Papers Even though multiple non-overlapped channels exist in the 2.4GHz and 5GHz spectrum, most IEEE 802.11-based multi-hop ad hoc networks today use only a single channel. As a result, these networks rarely can fully exploit the aggregate bandwidth...
[October 20, 2005, 0:00]
A New Backoff Algorithm for the IEEE 802.11 Distributed Coordination Function
White Papers In the IEEE 802.11 Wireless Local Area Networks (WLANs), network nodes experiencing collisions on the shared channel need to backoff for a random period of time, which is uniformly selected from the Contention Window (CW).
[January 31, 2009, 6:23]
(ZD1211B)IEEE 802.11 b+g USB Adapter
Downloads ZD1211 is a compact, low power, high security and high performance solution for versatile WLAN applications. ZD1211 integrates WLAN MAC controller, base-band processor and USB 2.0 interface in single chip.
[August 17, 2005, 8:00]
Improving IEEE 802.11 Wireless Networks With Microsoft Windows XP Service Pack 2
White Papers This webcast provides an overview of the Microsoft implementation of IEEE 802.11 wireless local area network (LAN) networking in Microsoft Windows XP Service Pack 1 (SP1). It also presents design modifications that improve the Windows wireless LAN...
[March 3, 2005, 23:00]
Experimental Evaluation of Application Performance With 802.11 PHY Rate Adaptation Mechanisms in Diverse Environments
White Papers This paper examines the impact of physical layer rate adaptation mechanisms on the performance of real applications over 802.11 wireless links in diverse channel environments. The evaluations are based on a testbed with real wireless devices...
[August 1, 2007, 1:00]
Enhancements of the IEEE 802.11, a MAC Protocol for Ad Hoc Network With History of Power Adjustment
White Papers This paper proposes a MAC protocol which improves disadvantages of the IEEE 802.11 DCF standard, like the blocking problem, scheduling concurrent transmissions (the hidden and exposed problem). The protocol also achieves better spatial reuse of the...
[March 25, 2008, 8:57]
Voice Over Wireless LAN Via IEEE 802.16 Wireless MAN and IEEE 802.11 Wireless Distribution System
White Papers IEEE 802.16 Wireless MANs (WMAN) aims to extend the wireless broadband access up to kilometers to facilitate the long-range 'last-mile' Solution. For short-range extension, IEEE 802.11 Wireless Distribution System (WDS) can be set up easily by...
[November 18, 2005, 0:00]
Introduction to IEEE 802.11
White Papers In 1997 the IEEE adopted IEEE Std.the first wireless LAN (WLAN) standard. This standard defines the media access control (MAC) and physical (PHY) layers for a LAN with wireless connectivity. It addresses local area networking where the connected...
[July 19, 2003, 0:00]
Evaluation of Quality of Service Schemes for IEEE 802.11 Wireless LANs
White Papers This paper evaluates four mechanisms for providing service differentiation in IEEE 802.11 wireless LANs, the Point Coordinator Function (PCF) of IEEE 802.11, the Enhanced Distributed Coordinator Function (EDCF) of the proposed IEEE 802.11e...
[March 16, 2009, 5:02]
Unlicensed Operation of IEEE 802.16: Coexistence With 802.11(a) in Shared Frequency Bands
White Papers The coexistence of IEEE 802.16 (WiMAX) and IEEE 802.11 (WiFi) in shared radio spectrum is an acute problem. In license-exempt frequency bands, the frame-based medium access of 802.16 requires rigorous protection against interference from wireless...
[April 22, 2009, 1:24]
The Effects of Adjacent Channel Rejection and Adjacent Channel Interference on 802.11 WLAN Performance
White Papers The escalating deployment of wireless networking technology as well as other wireless technologies in the same unlicensed spectrum is rapidly increasing the radio frequency (RF) interference for Wi-Fi (802.11) products, threatening the data...
[November 30, 2003, 21:36]
