Appendix c. glossary – Agilent Technologies E6701A User Manual
Page 32
Copyright 2002 Agilent Technologies.
10001810-E6701A Tutorial LAN Connection
All Rights Reserved.
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Rev. 1.2; Feb. 14, 2002
Appendix C. Glossary
BER
Bit Error Rate
BLER
Block Error Rate (Agilent proprietary connection mode – patent applied for)
DUT
Device Under Test (typically, a cellular phone or wireless appliance)
GGSN
Gateway GPRS Support Node. Provides gateway between GPRS network and public packet data
network (Internet); connects to HLR; provides location and authentication management; counts
packets for billing; and stays constant.
GMM
GPRS Mobility Management
GPRS
General Packet Radio Service
GSM
Global System for Mobile Communications
GSM L3
Layer 3
HTML
HyperText Markup Language
IMSI
International Mobile Subscriber Identity
IP
Internet Protocol
L1
Layer One (defines PDCH physical channel; defines logical channels such as PDTCH and PACCH;
and defines coding schemes CS1 to CS4)
LAB
Laboratory (where research and development work is done)
LAN
Local Area Network
LLC
Logical Link Control (air interface independent; discriminates between data and control signalling)
MAC
Medium Access Control (mediates access across multiple mobiles)
MS
Mobile Station (typically, a cellular phone)
PDP
Packet Data Protocol
RF
Radio Frequency
RLC
Radio Link Control (performs procedures to transfer data)
SGSN
Serving GPRS Support Node (controls connection between network and MS; manages sessions;
manages mobility functions like handovers and paging; and changes as MS roams)
SIM
Subscriber Identity Module
SM
Session Management
SNDCP
Subnetwork Dependent Convergence Protocol (multiplexes multiple application protocols)
TBF
Temporary Block Flow
USF
Uplink State Flag
WAP
Wireless Application Protocol
WML
Wireless Markup Language