Glossary

Question 1

BSS

Answer 1

A BASE STATION SUB SYSTEM (BSS) contains all nodes and functionalities that are necessary to wirelessly connect mobile subscribers over the radio interface to a network.

The radio interface is usually also referred to as the air interface.

Question 2

NSS

Answer 2

A NETWORK SUB SYSTEM (NSS) contains all the nodes and functionalities that are necessary for switching of calls,subscriber management and mobility management.

The NSS is also called the core network.

Question 3

BTS

Answer 3

The Base Transceiver Station (BTS).

Question 4

BSC

Answer 4

The Base Station Controller (BSC).

Question 5

MSC

Answer 5

The Mobile Switching Centre (MSC).

Question 6

EIR

Answer 6

The Equipment Identity Register (EIR).

Question 7

VLR

Answer 7

The Visitor Location Register (VLR).

Question 8

HLR

Answer 8

The Home Location Register (HLR).

Question 9

PSTN

Answer 9

Public Switched Telephone Network.

Question 10

AuC

Answer 10

Authentication Centre.

Question 11

DAS

Answer 11

Distributed Antenna System.

Question 12

CSD

Answer 12

Circuit Switched Data.

Question 13

MOCN

Answer 13

Multi Operator Core Network.

Question 14

GPRS

Answer 14

General Packet Radio System.

Question 15

S-GSN

Answer 15

Servicing GPRS Support Node.

Question 16

G-GSN

Answer 16

Gateway GPRS Support Node.

Question 17

TDMA

Answer 17

Time Division Multiple Access.

Question 18

ARFCN

Answer 18

Absolute Radio Frequency Channel Number.

Question 19

ISDN

Answer 19

Integrated Service Digital Network.

Question 20

MS

Answer 20

Mobile Subscriber.

Question 21

GMSK

Answer 21

Gaussian Minimum Shift Key.

Question 22

FDMA

Answer 22

Frequency Division Multiple Access.

Question 23

8-PSK

Answer 23

8 Phase Shift Keying.

Edge

Question 24

NOC

Answer 24

Network Organisation Centre.

Question 25

CDMA

Answer 25

Code Division Multiple Access.

Question 26

CS

Answer 26

Circuit Switched

Question 27

PS

Answer 27

Packet Switched

Question 28

HSDPA

Answer 28

High Speed Downlink Packet Access.

Question 29

HSUPA

Answer 29

High Speed Uplink Packet Access.

Question 30

HSPA+

Answer 30

High Speed Packet Access +.

Question 31

IMSI

Answer 31

International Mobile Subscriber Identity.

Question 32

LTE

Answer 32

Long Term Evolution.

Question 33

MNC

Answer 33

Mobile Network Code.

Question 34

MCC

Answer 34

Mobile Country Code.

Question 35

MSIN

Answer 35

Mobile Subscriber Identity Number.

Question 36

OFDMA

Answer 36

Orthogonal Frequency Division Multiple Access.

4G LTE

Question 37

B-PSK.

Answer 37

Binary-Phase Key Shift.

3G release 99

Question 38

UMTS

Answer 38

Universal Mobile Telecommunications System.

Question 39

UE

Answer 39

User Equipment

Question 40

TRAU

Answer 40

Transcoded and Rate Adaptation Unit.

Question 41

QAM

Answer 41

Quadature Amplitude Modulation.

Question 42

HSS

Answer 42

Home Subscriber Server

LTE

Question 43

PDN-GW

Answer 43

Packet Data Network-Gateway.

LTE

Question 44

MME

Answer 44

Mobility Management Entity.

LTE

Question 45

SGW

Answer 45

Serving Gateway

LTE

Question 46

SRES

Answer 46

Signed Response

2nd Triplet

Question 47

PCRF

Answer 47

Policy and Charging Rules Function.

Question 48

QoS

Answer 48

Quality of Service.

Question 49

APN

Answer 49

Access Point Name.

Question 50

MIMO

Answer 50

Multiple Output Multiple Input.

Question 51

E-UTRAN

Answer 51

Evolved UMTS Terrestrial Radio Access Network.

Question 52

VoLTE

Answer 52

Voice Over LTE

Question 53

RNTI

Answer 53

Radio Network Temporary Identity.

Question 54

ANDSF

Answer 54

Access Network Discovery Selection Function.

Question 55

EPC

Answer 55

Evolved Packet Core.

Question 56

EPS

Answer 56

Evolved Packet System.