Andrew Type 960 Class I & II Manual de usuario descargar pdf (Pagina 3)

3-1.1 Some important abbreviations frequently in use of GSM network:-

Sr.no. Abbreviations Long forms

1 GSM Global System for Mobile Communication

2 MS Mobile Station (Handset)

3 BSS Based Station Sub System

4 BTS Base Transceiver Station

5 BSC Base Station controller

6 MSC Mobile Switching Center

7 HLR Home Location Register

8 VLR Visitor Location Register

9 ETSI European Telecom Standard Institute

10 IMSI International Mobile Subscriber Identity

11 LAC Location Area Code

12 NCC Network Color Code

13 OMC Operation and Maintenance Center

14 SIM Subscriber Identity Module

15 BCC Base Color Code

16 MNC Mobile Network Code

17 RT Radio Terminal

18 MRIF Mini Rack Interface

19 PG Peripheral Group

20 ARFCN Absolute Radio Frequency Channel No.

21 MSIDN Mobile Sub’s ISDN No

22 MSRN Mobile Sub’s roaming no.

3-1.2 General: -

1. Up link: - 890-915 MHz and Down link: - 935-960 MHz

2. GSM Bandwidth: - 25 MHz

3. Channel Bandwidth: - 200 KHz

4. No. of Channels 25 x 10

------------ = 125

200 x 10

Numbers of 124 Channels are available and spread at 200 KHz intervals.

First carrier not used due to interference to other systems.

5. ARFCN Up link Frequency = 890 + 0.2 x N (N-CHL No. 1-62)

Down link Frequency = 935 + 0.2 x N (N- CHL No. 63-124)

6. Pl. see block schematic of GSM network in Fig. 3-3 and Lucent BTS front view in

Fig. no. 3-2, 3-4, & 3-5.

1 2 3 4 5 6 7 8 ... 39 40

Sin comentarios

Andrew Type 960 Class I & II Manual de usuario Pagina 3