1. Prepared by: 1. Ngô Khắc Hoàng
2. Nguyễn Văn Lý
3. Nguyễn Thị Hảo
GSM and WCDMA of
Vinaphone
COMPUTER COMMUNICATIONS AND NETWORKS 1
1

2. Content of Presentation
I.
2

3.  GSM stands for The Global System for Mobile
Communication
 GSM is a European standard, developed to provide a
common second-generation (2G) technology for all
Europe.
 The aim of GSM is to replace incompatible
technologies of the first-generation (1G)
I. 1. THEORY OF GSM: (a) Definition
3

4.  Two duplex bands for communication with each one
of 25 MHz in width
 Each band contains 124 channels of 200 KHz
separated by guard intervals
I. 1. THEORY OF GSM: (b) Technique
4

5. I. 1. THEORY OF GSM: (b) Technique
5 Transmission of GSM: Both TDMA & FDMA are
used

6.  GSM allows a reuse factor as low as 3
I. 1. THEORY OF GSM: (b) Technique
6

7. I. 1. THEORY OF GSM: (c) Architecture
7

8. Base transceiver
station
Provides the wireless
connection between
MS and BTS
I. 1. THEORY OF GSM: (c) Architecture
8

9. Base station
controller
Provides intelligent
functions to control all
activities of the radio
subsystem, and
interface management.
I. 1. THEORY OF GSM: (c) Architecture
9

10. Mobile Switching
Center
Establishing
traffic
channel
connections
to BSS, other
MSCs, and
other
networks
I. 1. THEORY OF GSM: (c) Architecture
10

11. Home location
register Manage all
subscriber data
I. 1. THEORY OF GSM: (c) Architecture
11

12. Visitor location
register
Provide data
to process a
call while MS
moves to
another
location
I. 1. THEORY OF GSM: (c) Architecture
12

13. Authentication
center
I. 1. THEORY OF GSM: (c) Architecture
13

14. Operation and maintenance
center
I. 1. THEORY OF GSM: (c) Architecture
14

15. I. 1. THEORY OF GSM: (c) Architecture
15

16.  WCDMA stands for Wideband Code Division
Multiple Access
 WCDMA is an air interface standard in 3G mobile
communication networks, and uses a version of
CDMA
 Supporting richer mobile multimedia services
such as music-on-demand, TV, video
streaming, Internet access.
I. 2. THEORY OF WCDMA: (a) Definition
16

17. I. 2. THEORY OF WCDMA: (b) Technique
17

18. I. 2. THEORY OF WCDMA: (c) Architecture
18
Network Architecture

19. 19
I. 2. THEORY OF WCDMA: (c) Architecture
Protocol Architecture

20. Content of Presentation
II.
20

21. ~30.000 Base
Transceiver
Stations
D900
II. 1. GSM OF VINAPHONE: (a) Parameters
21

22. TRA
U
E1-
PCM30
Transcode
r
Rate
adaptor
A digital
signal
stream
30 telephony
analog signals
II. 1. GSM OF VINAPHONE: (b) Architecture
22

23. II. 1. GSM OF VINAPHONE: (c) Services
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II. 2. WCDMA OF VINAPHONE: (a) 2G  3G
3GPP
Release 4
Release 5

29. - Frequency band: 2100 MHz
- Maximum Internet Access Rate:
+ 1st step: 7.2 Mbps
+ 2nd step: 14.4 Mbps
- Handover technique
II. 2. WCDMA OF VINAPHONE: (b)
Parameters
29

30. II. 2. WCDMA OF VINAPHONE: (c)
Architecture
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User Equipment
+ Mobile Equipment
+ USIM
Interface:
+ Cu: ME – USIM
+ Uu: UE – UTRAN

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UTRAN (~BSS)
+ Node B
+ RNC
Interface:
+ Tur: RNC – RNC
+ Iub: Node B – RNC
+ Iu: UTRAN – CN
+ IuBC: RNC - CBC

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Core Network
+ Inherit from GSM:
MSC/VLR, G-
MSC, SGSN, GGSN,
HLR/EIR/AuC
+ MSC/VLR & HLR:
change in hardware
and software
+ MSC: Softswitch
(MSC Server and
MGW)

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II. 2. WCDMA OF VINAPHONE: (d) Services

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II. 2. WCDMA OF VINAPHONE: (d) Services
Allow subscribers to see each other
during a call via mobile phone camera.
Allow subscribers to access directly to
Internet with mobile phone.
Allow subscribers to have high speed
Internet access from computer.

37. 37
II. 2. WCDMA OF VINAPHONE: (d) Services
Allow subscribers to watch live TV
channels and other requested contents
(music, films, video clips…) on the
mobile phone screen.
Allow subscribers to watch images
obtained from cameras placed at
intersections, public places, private
homes…on the mobile phone screen.

38. 38
+ GSM: 2G
 Basic services: Voice call, SMS, Fax…
+ WCDMA: 3G
 Multimedia services: Video call, Mobile
TV, Mobile Internet…
REVISION
The evolution hasn’t
stopped
 4G  5G … nG

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THANKS FOR YOUR
ATTENTION!