User's Manual

User
AN-100U/UX Base Station
Manual
70-00058-01-04 Proprietary Redline Communications © 2010 Page 130 of 136 April 19, 2010
Term
Acron
ym
Definition
Data Encryption
Standard
DES
Refers to the ANSI X3.92 and X3.106 standards.
3DES applies three keys in sequence to encrypt the data.
Directional
Antenna
-
An antenna that concentrates transmission power into one
direction.
Download
Interval Usage
Code
DIUC
An interval usage code specific to a downlink (from RedMAX
base station to subscriber).
Downlink
-
The direction from the RedMAX base station to the subscriber.
Downlink
Channel
Descriptor
DCD
A medium access control layer message that describes the
physical layer characteristics of a downlink channel.
Downlink Map
DL-
MAP
A medium access control layer message that defines a map with
burst start times. DL-MAP is the main message that defines
synchronization of Subscriber. Based on the map Subscriber
read and parse the Downlink information.
Downstream
-
Flow from base station to subscriber.
Downstream
Classifier
-
Assigns packets to downstream service flows.
Dynamic Host
Configuration
Protocol
DHCP
An Internet protocol used for assigning network-layer (IP)
addresses dynamically.
Dynamic service
-
The set of messages and protocols that allow base station and
subscriber to add, modify, or delete the characteristics of a
service flow.
Encryption
-
For the purposes of privacy, the transformation of data into an
unreadable format until reformatted with a decryption key.
Ethernet
-
A LAN architecture using a bus or star topology
FCS
FCS
Frame Check Sequence.
FEC
FEC
Forward Error Correction
File Transfer
Protocol
FTP
(Client and Server): Protocol implementing RFC 959 and running
in NOC-S as Client and BSC as Server for transferring/replicating
configurations files needed by local DHCPs.
Frame
-
A structured data sequence of fixed duration used by some
physical layer specifications. A frame may contain both an uplink
sub frame and a downlink sub frame.
Frequency
Agnostic
-
Operating independently of the radio frequency selection.
Frequency
Division
Duplexing
FDD
A transmission method that separates the transmitting and
receiving channels with a guard band (some amount of spectrum
that acts as a buffer or insulator).
In a framed (burst) FDD system, the uplink and downlink
channels are located on separate frequencies and the downlink
data can be transmitted in bursts. A fixed duration frame is used
for both uplink and downlink transmissions.
Full Duplex
-
Refers to the transmission of data in two directions
simultaneously (i.e. a telephone)
Gain
-
The ratio of the output amplitude of a signal to the input
amplitude of a signal. Typically expressed in decibels (dB).