Proxim RangeLAN2 7500 Uživatelská příručka stáhnout pdf (Strana 64)

E. Glossary

Access Point - An internetworking device that seamlessly con-

nects wired and wireless networks together.

Bandwidth — The size (In Hertz) of the frequency range that a

signal transmission occupies. Typical narrow band signals

occupy a 2 5KHz bandwidth. The RangeLAN2 signal occupies a

1 MHz bandwidth.

BOOTP (Bootstrap Protocol) — A protocol used to assign IP

addresses.

Channel — In RangeLAN2 networks, the channel refers to the

frequency hopping sequence the card follows.

CSMA/CA — (Carrier Sense Multiple Access/Collision Avoid-

ance) — CSMA is a protocol in which each node senses whether

or not a channel is in use before attempting to transmit informa-

tion. CA is an optimization by which channel time is reserved to

avoid collisions.

Frequency Hopping — A spread spectrum technique by which

the band is divided into a number of channels and the transmis-

sions hop from channel to channel in a pre-specified sequence.

Interference — A situation that occurs when an unwanted RF

signal occupies the same frequency band as a desired signal.

IP Address (Internet protocol address) — A 32-bit address

assigned to TCP/IP hosts.

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Proxim RangeLAN2 7500 Uživatelská příručka Strana 64