NetComm NP642 manual Bss, Csma/Ca

Page 26

Bandwidth:

The transmission capacity of a device, which is calculated by

 

how much data the device can transmit in a fixed amount of time

 

expressed in bits per second (bps).

Beacon:

A beacon is a packet broadcast by the Access Point to keep the

 

network synchronized. Included in a beacon are information such

 

as wireless LAN service area, the AP address, the Broadcast

 

destination addresses, time stamp, Delivery Traffic Indicator Maps,

 

and the Traffic Indicator Message (TIM).

Bit:

A binary digit, which is either -0 or -1 for value, is the smallest unit

 

for data.

Bridge:

An internetworking function that incorporates the lowest 2 layers of

 

the OSI network protocol model.

Browser:

An application program that enables one to read the content and

 

interact in the World Wide Web or Intranet.

BSS:

BSS stands for “Basic Service Set”. It is an Access Point and all the

 

LAN PCs that associated with it.

Channel:

The bandwidth which wireless Radio operates is divided into

 

several segments, which we call them “Channels”. AP and the client

 

stations that it associated work in one of the channels.

CSMA/CA:

In local area networking, this is the CSMA technique that combines

 

slotted time -division multiplexing with carrier sense multiple access/

 

collision detection (CSMA/CD) to avoid having collisions occur a

 

second time. This works best if the time allocated is short compared

 

to packet length and if the number of situations is small.

26

NP642 IEEE 802.11g PCI Adapter

 

YML785 Rev1

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Contents Page Static Electricity Contents Introduction Wireless Terminology Wireless StandardsWPA System Requirements Package Contents Getting to Know Your NP642NP642 LED Indicators Power PWRHardware Installation PCI Card Installation InstructionsConnecting the Antenna You have screwed it all the way to its endSoftware Installation Windows 98se/ME/2000/XP Utility and Driver InstallationIconDescription Using the Wireless Utility Link InformationFieldDescription II. Configuration Tx Rate Preamble III. Advanced NP642 Ieee 802.11g PCI Adapter Default Key Select one of the 4 keys to use Network Key IV. Site Survey FieldDescription About Appendix a Glossary AsciiBSS CSMA/CADsss CSMA/CDDhcp ESS EssidHEX IeeePsdu PlcpPpdu RTSTCP/IP WEPContact Information Copyright InformationCustomer Information Product Warranty Limitations of Warranty