802.11 wireless lan

ZDNet Resources

• sort by:
• Relevance
• Date
• Popularity

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, 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: 802.11 Wireless LAN, IEEE 802.11, Network, Radio, TCP, University Of Canterbury, TCP Reno Congestion Control Mechanism, 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

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, Wireless, Networking

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, Wireless LANs, VOIP, 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, Chinese University Of Hong Kong, 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, VOCAL Technologies, 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

Additional Resources

CommView for WiFi 6.2 build 657 (Windows)

CommView for WiFi is a wireless network monitor and analyzer for 802.11 a/b/g/n networks. The program presents a clear, detailed picture of network traffic that facilitates the examination and analysis of packets, helping the user to pinpoint network problems and troubleshoot software and hardware. With over 70 supported protocols, CommView...

Tags: Network, Microsoft Windows, TamoSoft, CommView, Wireless LANs, Wi-Fi, Wireless And Mobility, Networking

Software downloads 2009-11-14

Asus K50IJ-RX05

asus k50IJThe ASUS K50IJ series is one of the latest budget notebooks designed to provide better performance than a netbook and a larger screen for only a modest price increase. ASUS K50IJ-C1 Specifications:Windows Vista Home Premium (SP1, 32-bit)Intel Core 2 Duo processor T6500 Processor (2.1GHz)15.6" 16:9 Wide Format (1366 x...

Tags: Notebooks, Engineering, Wireless LANs, Microsoft Windows Vista (Longhorn), notebook, battery, ASUS, speaker, RAM, laptop computer

Discussion threads 2009-10-25

802.11n approved; Not 'new' and hardly groundbreaking

I'm moving to itWell, if all you do is check email and write blog posts all day - then yeah, g is fine.BUT - if you ever intend on watching high-def video or play games, then even g is not enough. You'll want n.WiMAX is interesting, BUT:-No computer we have...

Tags: Wi-Fi, Wireless and Mobility, NETWORKING, N-Router, WPA-PSK, wireless, IEEE 802.11n, Netgear Inc., network

Discussion threads 2009-09-14

MSN Messenger Force (for the Pocket PC) v2.5ppc (Mobile)

MSN Messenger Force uses the MSN Messenger protocol for core Instant Messaging and Presence functionality. The MSN Messenger Service tells you when your family and friends are online so that you can send instant messages to them in real time.This version of MSN Messenger Force for Windows powered Pocket PCs...

Tags: MSN, Mobile, PC, MSN Messenger, IM, Pocket PC, MSN Messenger Force, MSN Messenger Service, Instant Messaging, Internet, Online Communications

Software downloads 2009-07-10

Optimum Ultra: So how fast is it?

Optimum Online's $99 per month Ultra DOCSIS 3.0 service is one of fastest residential broadband offerings available today. But is it really "Up to" 101Mbps as advertised? As I mentioned in a post last week about broadband service outages, Last Friday, I was...

Tags: Cablevision Systems Corp., Router, Network, Adobe PDF, Broadband, Server, NetGear, Ultra DOCSIS 3.0, CISCO DPC3000, Speed Test, OOKLA, SRXN3205, Network Technology, Routers & Switches, Modems, Home Networking, Cable, Firewalls, Broadband Internet, Networking, Telecommunications, Hardware, Components, Personal Technology, Jason Perlow

Blog posts 2009-07-07

Proactive Attacker Localization in Wireless LAN

This paper addresses the open problem of locating an attacker that intentionally hides or falsifies its position using advanced radio technologies. A novel attacker localization mechanism, called Access Point Coordinated Localization APCL, is proposed for IEEE 802.11 networks. APCL actively forces the attacker to reveal its position information by combining...

Tags: LAN, University Of Wisconsin, WLAN, Access Point, Wireless, Performance Advantage, Security Administration, Wireless And Mobility, Security

White papers 2009-04-01

Meraki White Paper: Wireless LAN Security

While security is important for all networks, wireless LANs deserve special consideration since they are subject to an increased level of risk. First, since wireless extends beyond the walls of an organization, physical security is less effective than with wired networks. Second, wireless network abuse has become more common, with...

Tags: Security, Network, WLAN, Wireless, Meraki, Wi-Fi, Wireless And Mobility

White papers 2009-03-01

Wi-Fi: the only network you need?

CES, the showcase of all tech that is likely to make a splash over the next year, is upon us. While reserved primarily for, as the name implies, consumer technology, there are fundamental tools and technologies that will impact businesses as well.News coming out of Las Vegas today is around...

Tags: Device, Network, Personal Area Network, Radio, Wireless LANs, Wi-Fi, Bluetooth, Wireless, Advertising & Promotion, Chipsets, Marketing, Semiconductors, Hardware, Components, Chris Silva

Blog posts 2009-01-07

Motorola pushes secured wireless LAN into enterprise

Motorola, with the close of its acquisition of AirDefense at the end of last month, is wasting no time integrating AirDefense's wireless security technology into its wireless LAN access points. Today, as part of the company's announcement of a hardware-based wireless intrusion prevention system built into its...

Tags: Network, WLAN, Motorola Inc., Wi-Fi, Wireless, LANs, Wireless LANs, Networking, Sam Diaz

Blog posts 2008-10-21

An Experimental Evaluation of DoS Attack and Its Impact on Throughput of IEEE 802.11 Wireless Networks

Off late, Wireless LAN WLAN has gained popularity in a variety of locations. This has lead to development of high level security protocols for WLAN. The newest protocol IEEE 802.11i ratified to provide strong data encryption but it cannot prevent Denial of Service DoS attacks on WLAN. This paper in...

Tags: Denial Of Service, IEEE 802.11, WLAN, Universiti Putra Malaysia, Wireless LANs, LANs, Wi-Fi, Wireless And Mobility, Security, Networking

White papers 2008-08-01