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IEEE 802.11 Standard

 

The IEEE 802.11 Wireless LAN standards subcommittee, which is formulating 

a standard for the industry. 

Access Point

 

An internetworking device that seamlessly connects wired and wireless 

networks together. 

Ad Hoc

 

An Ad Hoc wireless LAN is a group of computers, each with a WLAN 

adapter, connected as an independent wireless LAN. Ad Hoc wireless LAN 

is applicable at a departmental scale for a branch or SOHO operation. 

BSSID

 

A specific Ad Hoc LAN is called a Basic Service Set (BSS). Computers in a 

BSS must be configured with the same BSSID. 

DHCP

 

Dynamic Host Configuration Protocol - a method in which IP addresses are 

assigned by server dynamically to clients on the network. DHCP is used for 

Dynamic IP Addressing and requires a dedicated DHCP server on the 

network. 

Direct Sequence Spread Spectrum

 

This is the method the wireless cards use to transmit data over the frequency 

spectrum. The other method is frequency hopping. Direct sequence 

spreads the data over one frequency range (channel) while frequency 

hopping jumps from one narrow frequency band to another many 

times per second. 

ESSID

 

An Infrastructure configuration could also support roaming capability for 

mobile workers. More than one BSS can be configured as an Extended 

Service Set (ESS). Users within an ESS could roam freely between BSSs 

while served as a continuous connection to the network wireless stations 

and Access Points within an ESS must be configured with the same ESSID 

and the same radio channel. 

Ethernet

 

Ethernet is a 10/100Mbps network that runs over dedicated home/office 

wiring. Users must be wired to the network at all times to gain access. 

Gateway

 

A gateway is a hardware and software device that connects two dissimilar 

Summary of Contents for LM820

Page 1: ...1 0 All rights reserved All trade names are registered trademarks of respective manufacturers listed This manual may not be copied in any media or form without the written consent of original maker L...

Page 2: ...reless LAN Basics 3 3 IP ADDRESS 4 4 Install Driver Utility 5 4 1 Windows XP Vista Win7 5 5 Wireless Network Configuration 7 5 1 Utility Icon 7 5 2 Client Mode Default Setting 7 6 Technical Specificat...

Page 3: ...TV technician for help REGULATION INFORMATION The WLAN 11n USB Client Adapter must be installed and used in strict accordance with the manufacturer s instructions This device complies with the followi...

Page 4: ...void the Grant of Certification this module is limited to OEM installation only and must not be sold to end users end user has no manual instructions to remove or install the device only software or o...

Page 5: ...2009 This equipment is marked with the symbol and can be used throughout the European community Marking by the symbol indicates that usage restrictions apply France 2 4GHz for Metropolitan France In...

Page 6: ...ins of each 22 MHz wide channel are shown in following Table Channel Identifier Frequency MHZ Regulatory Domains Japan ETSI North America Israel France Outdoor Mexico 1 2412 2 2417 3 2422 4 2427 5 243...

Page 7: ...distance of up to 300 meters in free space 150 120 90 60 54 48 36 30 24 22 18 12 11 6 5 5 2 1 Mbps selectable Data Rate 64 128 bit WEP WPA Wi Fi Protected Access WPA2 2 400GHz 2 4835GHz unlicensed ISM...

Page 8: ...ide Driver CD CONNECTING YOUR WLAN 11n USB Client Adapter TO PC Quick Start Guide Connect your WLAN 11n USB Client Adapter to your PC Install driver GETTING TO KNOW WIRELESS LAN ADAPTER LED LED turns...

Page 9: ...to the Internet Ad Hoc Wireless Network Infrastructure Wireless Network The most obvious difference between Infrastructure wireless network and Ad Hoc wireless network is that the PCs in Infrastructur...

Page 10: ...a unique network address There are two methods to assign a network address to a computer on a TCP IP network Static IP addressing Dynamic IP addressing DHCP Client In network with static IP addressing...

Page 11: ...installation program after you insert the disk into your CD drive Step 1 Insert the installation CD into your CD ROM Choose the Setup Language and click Next button Step 2 Installation descriptions s...

Page 12: ...6 Installing configuring WLAN utility Installing Drivers Step 3 Click Finish to complete installation...

Page 13: ...ally 5 1 Utility Icon Client mode utility running but no WLAN Adapter plugged Client mode utility running and WLAN Adapter scan available network Client mode utility running and WLAN Adapter can not s...

Page 14: ...e link between the node and its Access Point Link Quality is a measurement of receiving and transmitting performances over the radio Network Address displays current MAC Address IP Address Subnet and...

Page 15: ...rescan available networks currently Select one of SSIDs and click Add to Profile to create profile that can be configured more wireless parameters In this page you can edit your profile name configure...

Page 16: ...nters to check or evaluate the wireless performance Click Reset button to set counter to zero 5 2 6 Wi Fi Protected Setup An easy and secure setup solution for Wi Fi network you can choose PIN Code or...

Page 17: ...11 Step 2 Select a specific AP Step 3 Enter the PIN code into your AP Step 3 Select AP that you want to configure Step 4 Wait for configuring your wireless AP to be the security setting...

Page 18: ...12 PBC method Step 1 Push the PBC button Step 2 Push the physical button on your AP or visual button on the WPS config page Soft AP Step 1 Click Access Point to change AP mode...

Page 19: ...13 Step 2 Click Config to set AP Step 3 Setting SSID and Securtiy Step 4 Choosing the Ethernet controller and click Apply to bridge your Soft AP...

Page 20: ...14...

Page 21: ...Remedy Make sure that you have installed the Utility from the attached CD Symptom The PC Card is linking but can t share files with others Remedy Make sure the file and printer sharing function is ena...

Page 22: ...P server on the network Direct Sequence Spread Spectrum This is the method the wireless cards use to transmit data over the frequency spectrum The other method is frequency hopping Direct sequence spr...

Page 23: ...cal Area Network LAN A LAN is a group of computers each equipped with the appropriate network adapter card connected by cable air that share applications data and peripherals All connections are made...

Page 24: ...liance The Wi Fi Alliance is a nonprofit international association formed in 1999 to certify interoperability of wireless Local Area Network products based on IEEE 802 11 specification The goal of the...

Page 25: ...is large This means the spatial reuse ratio of parallel transmissions is high In contrast with a large fragment threshold the overlap is small and the spatial reuse ratio is low However high fragment...

Page 26: ...val represents the amount of time between beacon transmissions Before a station enters power save mode the station needs the beacon interval to know when to wake up to receive the beacon and learn whe...

Page 27: ...defined for dial up authentication with Point to Point Protocol in RFC 2284 Beyond encapsulating EAP packets the 802 1x standard also defines EAPOL messages that convey the shared key information cri...

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