802.11 wireless lan

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Proactive Scan: Fast Handoff With Smart Triggers for 802.11 Wireless LAN

It has been a challenging problem to support VoIP-type delay sensitive applications in an 802.11 wireless LAN because the standard handoff procedure implemented in many current 802.11 products occurs a delay deem unacceptable to VoIP users. To reduce this delay, the authors have developed a fast handoff scheme called Proactive...

Tags: Technique, 802.11 Wireless LAN, IEEE 802.11, Handoff, Wireless LANs, Wi-Fi, Wireless, Productivity

White papers 2007-01-29

Multicast in 802.11 WLANs: An Experimental Study

While the deployment of WiFi networks continues to grow at an explosive rate, the multicast multimedia delivery service on WiFi compliant devices is still in its early stage of development. The real culprit is the IEEE 802.11 MAC protocol, and in particular, the absence of feedback mechanism when multicast is...

Tags: Multimedia, 802.11 Wireless LAN, IEEE 802.11, Mechanism, Association For Computing Machinery, Culprit, Wireless LANs, Wi-Fi, Wireless, Performance Management, Leadership, Human Resources, Workforce Management, Management

White papers 2006-10-06

Improving TCP Performance Over 802.11 WLAN With Radio Network Feedback

A new technique is proposed that enables TCP to distinguish wireless packet losses from congestion related packet losses. This is achieved by introducing a wireless enhancement proxy WENP at layer 3 in the base station that monitors the TCP packet flows in both directions, detects wireless packet drops and provides...

Tags: Technique, 802.11 Wireless LAN, IEEE 802.11, Network, Radio, TCP, Tcp/Ip, Networking, Wireless

White papers 2006-08-18

QoS Mechanisms for the MAC Protocol of 802.11 WLANs

There are two essential ingredients in order for any telecommunications system to be able to provide Quality-of-Service QoS guarantees: Connection Admission Control CAC and service differentiation. In Wireless Local Area Networks WLANs, it is essential to carry out these functions at the MAC level. The IEEE 802.11e draft standard includes...

Tags: 802.11 Wireless LAN, IEEE 802.11, QoS, MAC, Service Differentiation, Wireless LANs, LANs, Wi-Fi, Wireless, Networking

White papers 2006-05-28

A QoS-Based FAP Criterion for Indoor 802.11 Wireless LAN Optimization

Several software have been developed for computer-aided design of radio networks. The first constitutive element of such a tool is the propagation modelling algorithm. The second is the planning process providing positions and setup of access points. The last one concerning the Frequency channel Allocation Problem FAP is the focus...

Tags: 802.11 Wireless LAN, IEEE 802.11, QoS, Mobile, Optimization, Criterion, FAP, Advertising & Promotion, CAD, Wireless, Marketing, Software

White papers 2006-03-03

Improving TCP Throughput in 802.11 WLANs With High Delay Variability

Reduced throughput of TCP over wireless networks is mainly due to misinterpretation of wireless losses as congestion signals and high delay variability because of fluctuating radio channel quality. High delay variability often leads to spurious TCP timeouts which result in severe throughput degradation. This paper shows the negative impact of...

Tags: 802.11 Wireless LAN, IEEE 802.11, Network, Variability, TCP, Tcp/Ip, Wi-Fi, Wireless LANs, Networking, Wireless

White papers 2005-07-15

Performance Improvements in Data Transfer Over 802.11 WLANs

IEEE 802.11 represents the dominant solution in the framework of WLANs and wireless access to network services. However, 802.11 WLANs standard presents some limitations in terms of throughput and delay with respect to wired networks. The paper presents an overview of the existing technologies for performance improvement in 802.11 WLANs,...

Tags: 802.11 Wireless LAN, IEEE 802.11, Performance, Wireless LANs, Wi-Fi, Wireless

White papers 2005-04-13

Solutions to Performance Problems in VoIP Over a 802.11 Wireless LAN

Voice over Internet Protocol VoIP over a Wireless Local Area Network WLAN is poised to become an important Internet application. However, two major technical problems that stand in the way are: low VoIP capacity in WLAN and unacceptable VoIP performance in the presence of coexisting traffic from other applications. In...

Tags: 802.11 Wireless LAN, IEEE 802.11, Performance, IP, Telephony, VOIP, Wireless LANs, LANs, Telecommunications, Wi-Fi, Wireless, Networking

White papers 2005-01-01

Solutions to Performance Problems in VoIP Over 802.11 Wireless LAN

VoIP over WLAN is poised to become an important Internet application. However, two major technical problems that stand in the way are low VoIP capacity in WLAN and unacceptable VoIP performance in the presence of coexisting traffic from other applications. With each VoIP stream typically requiring less than 10 Kbps,...

Tags: 802.11 Wireless LAN, IEEE 802.11, Performance, WLAN, Telephony, Wireless LANs, VOIP, Telecommunications, Wi-Fi, Wireless, Networking

White papers 2004-08-17

The Effects of Adjacent Channel Rejection and Adjacent Channel Interference on 802.11 WLAN Performance

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 throughput performance of wireless local area networks WLAN. At the same time, the market is demanding higher...

Tags: 802.11 Wireless LAN, IEEE 802.11, Network, WLAN, LANs, Wireless LANs, Wi-Fi, Wireless, Networking

White papers 2003-11-01

802.11 Wireless LAN White Paper

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 Sequence Spread Spectrum technology. DSSS works by taking a data stream...

Tags: 802.11 Wireless LAN, IEEE 802.11, Direct Sequence Spread Spectrum, Wireless 802.11, Wireless LANs, Wi-Fi, Wireless

White papers 2003-10-23

802.11 Wireless LAN Performance

This white paper compares the performance of a variety of widely available 802.11 retail products, and shows that Atheros-based 802.11a, 802.11b, and 802.11g solutions significantly outperform the competition in both range and throughput.

Tags: 802.11 Wireless LAN, IEEE 802.11, Atheros Communications, Wireless LANs, Wi-Fi, Wireless

White papers 2003-04-09

Layers One & Two of 802.11 WLAN Security

This paper will address most of the fundamental security concerns by examining closely OSI layers one and two of the 802.11 standard, media access control Layer two and physical layer Layer one. This will provide with a foundation to implement more secure WLAN environments and avoid existing security holes. It...

Tags: 802.11 Wireless LAN, IEEE 802.11, MAC, WLAN, SANS Institute, Wireless LANs, Wi-Fi, LANs, Wireless, Wireless Security, Security, Networking

White papers 2003-02-19

Wireless LAN Policies for Security & Management

Just like wired networks, 802.11 wireless LANs require network policies that are designed, implemented, and enforced to maximize network performance and reduce exposure to the inherent security flaws in 802.11 WLANs. This white paper is designed to guide network administrators and security managers to design, implement, and enforce wireless LAN...

Tags: AirDefense, 802.11 Wireless LAN, Network, WLAN, LANs, Wireless LANs, Wi-Fi, Wireless, Networking, Security

White papers

Wireless LANs: Six Steps to Enterprise & Regulatory Policy Compliance

Just like wired networks, 802.11 wireless LANs require network policies that are designed, implemented, and enforced to maximize network performance and reduce exposure to the inherent security flaws in 802.11 WLANs. This white paper is designed to guide network administrators and security managers to design, implement, and enforce wireless LAN...

Tags: AirDefense, 802.11 Wireless LAN, Network, Compliance, WLAN, LANs, Wireless LANs, Wi-Fi, Wireless, Networking, Security

White papers

Voice & Video Over 802.11 Wireless LAN

This Webinar will consider the fact that voice and video applications over wireless LAN require technology able to meet specific challenges of QOS, throughput, and scaleability.

Tags: 802.11 Wireless LAN, IEEE 802.11, Voice, Video, Corporate Communications, Wireless LANs, LANs, Wi-Fi, Wireless, Telecommunications, Marketing, Networking

Webcasts

IP Solutions for Embedded 802.11 Wireless LAN Applications

This webcast will provide an overview of the 802.11 IP available for licensing and discusses the architecture underpinning this Wireless LAN technology.

Tags: 802.11 Wireless LAN, IEEE 802.11, Intersil, IP, Wireless LANs, Wi-Fi, Wireless, LANs, Network Technology, Networking

Webcasts

New Insights From a Fixed Point Analysis of Single Cell IEEE 802.11 WLANs

This paper studies a fixed point formalisation of the well known analysis of Bianchi. It provides a significant simplification and generalisation of the analysis. In this more general framework, the fixed point solution and performance measures resulting from it are studied. Uniqueness of the fixed point is established. Simple and...

Tags: 802.11 Wireless LAN, WLAN, Analysis, Cell

White papers

Additional Resources

Photos: Top 10 reviews of the week

Here are CNET Reviews' 10 favorite items from the past week, including a 61-inch rear-projection HDTV, D-Link's dual-band wireless router, and the simple but effective Nokia 6205. by CNET News.com

Tags: Photograph, Home Networking, TVs, Routers & Switches, Tv & Home Theater, Networking, Personal Technology, Home Entertainment, CNET News.com

Image galleries 2008-07-26

Girls are as smart as boys, but tests are getting dumber

New research published in the journal Science confirms what all of us teachers have known for a long time: girls are just as smart as boys. I hope none of our tax dollars went into that one. A quick quote from the article before I get into the...

Tags: Test, Teacher, Hyde, Taxes, Free Trade, Financial Planning, Finance, Christopher Dawson

Blog posts 2008-07-25