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LevelOne 11g USB Adapter w/LCD WiFi Detector Troubleshooting, What is the IEEE 802.11g standard?

Models: 11g USB Adapter w/LCD WiFi Detector WNC-0304USB

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7 Troubleshooting

This chapter provides solutions to problems usually encountered during the installation and operation of the adapter.

1. What is the IEEE 802.11g standard?

802.11g is the new IEEE standard for high-speed wireless LAN communications that provides for up to 54 Mbps data rate in the 2.4 GHz band. 802.11g is quickly becoming the next mainstream wireless LAN technology for the home, office and public networks.

802.11g defines the use of the same OFDM modulation technique specified in IEEE 802.11a for the 5 GHz frequency band and applies it in the same 2.4 GHz frequency band as IEEE 802.11b. The 802.11g standard requires backward compatibility with 802.11b.

The standard specifically calls for:

A.A new physical layer for the 802.11 Medium Access Control (MAC) in the 2.4 GHz frequency band, known as the extended rate PHY (ERP). The ERP adds OFDM as a mandatory new coding scheme for 6, 12 and 24 Mbps (mandatory speeds), and 18, 36, 48 and 54 Mbps (optional speeds). The ERP includes the modulation schemes found in 802.11b including CCK for 11 and 5.5 Mbps and Barker code modulation for 2 and 1 Mbps.

B.A protection mechanism called RTS/CTS that governs how 802.11g devices and 802.11b devices interoperate.

2.What is the IEEE 802.11b standard？

The IEEE 802.11b Wireless LAN standard subcommittee, which formulates the standard for the industry. The objective is to enable wireless LAN hardware from different manufactures to communicate.

3. What does IEEE 802.11 feature support？

The product supports the following IEEE 802.11 functions:

zCSMA/CA plus Acknowledge Protocol

zMulti-Channel Roaming

zAutomatic Rate Selection

zRTS/CTS Feature

zFragmentation

zPower Management

4.What is Ad-hoc？

An Ad-hoc integrated wireless LAN is a group of computers, each has a Wireless LAN adapter, Connected as an independent wireless LAN. Ad hoc wireless LAN is applicable at a departmental scale for a branch or SOHO operation.

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LevelOne 11g USB Adapter w/LCD WiFi Detector Troubleshooting, What is the IEEE 802.11g standard?, What is Ad-hoc？

Contents

User Manual WNC-0304USB11g USB Adapter w/LCD WiFi Detector LevelOneHOW TO CHARGE THE BATTERY OF WI-FI DETECTOR CONTENTSHOW TO USE THE WI-FI DETECTOR HOW TO INSTALL THE DRIVER AND UTILITY1 Introduction 1.1 Features1.2 Specifications WNC-0304USB USB Cable CD Manual/Driver/Utility 1.3 Package ContentsQuick Installation Guide 2 How to charge the battery of Wi-Fi Detector 3 How to use the Wi-Fi Detector The Icons on the LCD display are displayed as follows Seek/Lock 4.1 Install the Configuration Utility 4 How to install the driver and utilityPlease click “Next” to continue the installation Click “Finish” to complete the installation 4.2 Install the USB adapter Click “Finish” to complete the installation First Way 4.3 Using the Configuration UtilityA. Double-click the icon B. Click “Advance” Second WayC. Uncheck “Use Windows to configure my wireless network settings” 5 How to configure the utility 5.1 Wireless Connection Status Rate and Encrypt settings. Note Please refer to Section 5.2 for connecting to. The information includes Channel, Type, SSID, TXMore Setting For setting more functions including disable/enable WEP and5.2 General Connection Setting If “Any“ check box is enabled, the adapter will survey and connect When the adapter works in 11b mode, the maximum data rate isto one of the available wireless stations without checking the consistency of channel and SSID with the wireless stationThis setting has to be consistent with the wireless networks that Authentication ModeOpen System - No authentication is needed among the wireless Shared Key - Only wireless stations using a shared key WEP5.3 WEP and WPA Encryption 5.3.1 WEP SettingThe keys are used to encrypt data transmitted in the wireless Default Key ID“01234567890123456789abcdef“ or “administrator“ Clcik “Change“ will enable you to setup the WEP key. In thePage 5.3.2 WPA/WPA2 Setting Page This adapter supports three kinds of protocol for authentication It is the setting for WPA modeTTLS require a set of user name and password in addition. To get the certificate and the personal user name and password, pleaseContinuous Access Mode CAM - The adapter will always set 5.4 Advanced Settingsis still alive. In this mode, the power consumption is larger than saving mode when it is idle, but some components of the adapter“Maximum Power-Saving“ mode PSP XLink Mode5.5.2 AP Connection Status 5.5 Software AP Mode5.5.2 AP General Connection Setting site survey list of any wireless adapters. It means Only the If “Hide SSID“ check box is enabled, the AP will not appear in thewireless adapters set the same SSID can connect to the AP. It Clcik “Change“ will enable you to setup the parameters ofadapter in the list be the bridge between the wireless and wired Wireless adapters connect to the AP can access to the wiredshould use the shorter preamble type MAC Address Filter5.5.3 MAC Address Filter 1 Open Control Panel --Æ Internet Connection 6 X-Link InstallationRight Click “Wireless Network Connection” and select “Properties” Page Then select “Advanced” 8 Start the X-Link software after the installation 6 Setting completed, please turn your PSP into online statusClicks “OK” to start online gaming 1. What is the IEEE 802.11g standard? 7 Troubleshooting2. What is the IEEE 802.11b standard？ 3. What does IEEE 802.11 feature support？6. What is BSS ID？ 5. What is Infrastructure？7. What is WEP？ 8. What is TKIP?13. What is Spread Spectrum？ 12. What is DSSS？What is FHSS？And what are their differences？14. What is the maximum AP that can be detected? 15. What is the maximum detection distance?