Red
MAX
™
Base Station
user manual
Doc. #70-00058-01-01-DRAFT
Proprietary Redline Communications © 2006
November
29,
2006
Page 100 of 106
Term
Acronym Definition
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).
Gateway
-
A network point that acts as an entrance to another
network.
Gigahertz
GHz
1,000,000,000 Hz, or 1,000 MHz
Grant Per
Connection
GPC
A bandwidth allocation method in which grants are
allocated to a specific connection within a subscriber.
Note that bandwidth requests are always made for a
connection. A Subscriber can have multiple
connections. In GPC mode, Subscriber request
bandwidth for each connection.
Header Check
Sequence
HCS
Header Check Sequence error. This is a CRC error on
the header fields only.
Hertz
Hz
The international unit for measuring frequency,
equivalent to the number of cycles per second. One
megahertz (MHz) is one million Hertz. One gigahertz
(GHz) is one billion Hertz.
Information
Element
IE
A component of the downlink or uplink map that
defines the starting address associated with an IUC
that identifies a certain burst profile.
Internet Protocol
IP
See TCP/IP
Interval Usage
Code
IUC
A code identifying a particular burst profile that can be
used by a downlink or uplink transmission interval.
Isotropic
-
A theoretic construct of an antenna that radiates its
signal 360 degrees both vertically and horizontally—a
perfect sphere. Generally used as a reference.
Latency -
Delay
Lightweight
Directory
Access Protocol
LDAP
Internet protocol described in RFC 2251 and
implemented in NOC-C, NOC-S and SR. It is
designed to provide quick access to directories that
contain information locally in attributes or externally in
databases such as SQL. In our provisioning system
LDAP is the engine that replicates, distributes,
searches, reads and writes
Subscriber
information
(CPE-NAMES, Service Flows).
Line Of Sight
LOS
A clear direct path between two antennas, with no
obstructions within the first Fresnel zone.