TRENDnet TEW-310APB User Manual page 105

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.
CSMA/CD ? Carrier Sense Multiple Access/Collision Detection, which is a LAN access method
used in Ethernet. When a device wants to gain access to the network, it checks to see if the network
is quiet (senses the carrier). If it is not, it waits a random amount of time before retrying. If the
network is quiet and two devices access the line at exactly the same time, their signals collide.
When the collision is detected, they both back off and wait a random amount of time before retrying.
DHCP ? Dynamic Host Configuration Protocol, which is a protocol that lets network
administrator s manage and allocate Internet Protocol (IP) addresses in a network. Every computer
has to have an IP address in order to communicate with each other in a TCP/IP based infrastructure
network. Without DHCP, each computer must be entered in manually the IP address. DHCP
enables the network administrators to assign the IP from a central location and each computer
receives an IP address upon plugged with the Ethernet cable everywhere on the network.
DSSS ? Direct Sequence Spread Spectrum. DSSS generates a redundant bit pattern for each bit
to be transmitted. This bit pattern is called a chip (or chipping code). The longer the chip, the greater
the probability that the original data can be recovered. Even if one or more bits in the chip are
damaged during transmission, statistical techniques embedded in the radio can recover the original
data without the need for retransmission. To an unintended receiver, DSSS appears as low power
wideband noise and is rejected (ignored) by most narrowband receivers.
Dynamic IP Address ? An IP address that is assigned automatically to a client station in a TCP/IP
network by a DHCP server.
Encryption ? A security method that uses a specific algorithm to alter the data transmitted, thus
prevent others from knowing the information transmitted.
ESS ? ESS stands for "Extended Service Set". More than one BSS is configured to become
Extended Service Set. LAN mobile users can roam between different BSSs in an ESS.
ESSID ? The unique identifier that identifies the ESS. In infrastructure association , the stations
use the same ESSID as AP's to get connected.
Ethernet ? A popular local area data communications network, originally developed by Xerox
Corp., that accepts transmission from computers and terminals. Ethernet operates on a 10/100
Mbps base transmission rate, using a shielded coaxial cable or over shielded twisted pair telephone
wire.
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