NetComm NP642 User Manual

Page 26

background image


NP642 IEEE 802.11g PCI Adapter

YML785 Rev1


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).


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).


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

for data.


An internetworking function that incorporates the lowest 2 layers of

the OSI network protocol model.


An application program that enables one to read the content and

interact in the World Wide Web or Intranet.


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

LAN PCs that associated with it.


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.


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.