happinux的专栏

<br />802.11n Frequently Asked Questions<br />While 802.11n technology brings enormous benefits in terms of increased coverage, throughput and capacity, it also requires careful planning and optimization for organizations to fully realize its benefits.  Th

<br />EAP Authentication Protocols for WLANsBy Krishna Sankar, Andrew Balinsky, Darrin Miller, Sri Sundaralingam.Sample Chapter is provided courtesy of Cisco Press.Date: Feb 18, 2005.<br />SaveDiggDel.icio.usDiscussPrintE-mailChapter InformationContentsAcc

<br />EAP Authentication Protocols for WLANsBy Krishna Sankar, Andrew Balinsky, Darrin Miller, Sri Sundaralingam.Sample Chapter is provided courtesy of Cisco Press.Date: Feb 18, 2005.<br />SaveDiggDel.icio.usDiscussPrintE-mailChapter InformationContentsAcc

Blue Tooth in Linux

WLAN roaming, suit for the network design, to configure your client to make it roaming faster according to your network. But also it is good for develop to understand factors should be considered to make your client roamable.

A very comprehensive article about WLAN roaming, discussing about roaming technology in same subnet and cross subnet, as well as vendor various solution for fast roaming, detailed in roaming operate flow and IAPP, also mentioned several 802 standard

Keep in mind, though, that an increase in performance using RTS/CTS is the net result of introducing overhead (i.e., RTS/CTS frames) and reducing overhead (i.e., fewer retransmissions). If you dont

 引言    在无线局域网被广泛采用之前，最需要解决的就是网络安全问题。网络的完全性是IT专业人士、业务管理者、承担无线基础设施安全责任的相关人员所必须关注的。    IEEE802.11是第一种无线以太网标准，802.11标准涵盖许多子集，并且每一个子集的侧重点都不同，其中802.11a、802.11b和802.11g定义了核心的物理层规范，而802.11i是为解决802.11标

 无线联网技术是基于IEEE802.11标准（用于无线网络的国际标准），该标准主要对网络的物理层和访问层（MAC）进行规定，其中MAC层是重点。在MAC层以下，802.11规定了三种发送及接收技术：扩频(Spread Spectrum)技术、红外（Infared）技术、窄带（Narrow Band）技术。　　而扩频又分为直序（Direct Sequence,DS）扩频和跳频（Frequen

 IEEE802.11是IEEE（电气和电子工程师协会）制定的一个无线局域网标准，主要用于解决办公室局域网和校园网中的用户与用户终端之间的无线接入。IEEE802.11业务主要限于数据存取，传输速率最高只能达到2Mbps。由于IEEE802.11在速率上的不足，已不能满足数据应用的需求；因此，IEEE又相继推出了IEEE802.11b和IEEE802.11a这两个新的标准。三者之间技术差别主要在于

 由于无线局域网传输介质（微波、红外线）非“有限”的有线，客观上存在一些全新的技术难题，为此IEEE802.11协议规定了一些至关重要的技术机制，如CSM/CA、RTS/CTS等。1、CSMA/CA协议我们知道总线型局域网在MAC层的标准协议是CSMA/CD，即载波侦听多点接入/冲突检测（CarrierSenseMultipleAccesswithCollisionDetectio