báo cáo thực tập tìm hiểu công nghệ mạng 3g

1

ĐẠI HỌC QUỐC GIA THÀNH PHỐ HỒ CHÍ MINH
TRƯỜNG ĐẠI HỌC KHOA HỌC TỰ NHIÊN
Khoa Điện Tử Viễn Thông



Đề tài thực tập: Tìm hiểu công nghệ mạng 3G


Đơn vị thực tập: Trung tâm Mobiphone khu vực 2

Sinh Viên: Nguyễn Trọng Toàn -0820173
Nguyễn Viết Tiếng -0820170
Dương Hoài Tâm -0820142

Người hướng dẫn: Chuyên viên Kỹ Thuật Lê Dũng.





TP.HCM. Ngày 10 tháng11 năm 2011
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Mục Lục



I. Giới Thiệu Công Ty 1

II. Kiến Thức khi đi thực tế tại trạm BTS 2

III.A 3G tại Việt Nam 4

III.B Những dịch vụ 3G phổ biến ở Việt Nam 5

IV. A Tổng quan về 3G 7

IV.B Cấu trúc mạng 3G 8

IV.C Điều khiển công suất 14

IV.D Chuyển giao 17

V. Chuyển giao giữa các hệ thống WCDMA và GSM 26
VI. Các thuật ngữ viết tắt 32





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I. Giới thiệu về Trung tâm Thông tin di động khu vực II
 
P.  Công ty Thông tin Di
 (Vietnam Mobile Telecom Services Company - 
16 tháng 4 1993

GSM  
MobiFone.



 
-
2009).
II. Những kiến thức đọng lại sau chuyến đi trạm đầy ý nghĩa tại
Trung tâm Thông tin di động khu vực II

-



 
tròn.







 





4

 






 











-






 












5




-



-

 


-
-


 HCM có 






















6




III.A 3G tại Việt Nam


  


-
1980 MHz, 2110 MHz - 2170 MHz

-
              
CDMA2000-1x EV-         
-
1900-


         -   
     


-







W-

-
-


7

khác nhau: 



-1980MHz, 2110MHz - 2170MHz.

III.B Những dịch vụ 3G phổ biến ở Việt Nam


HSDPA 7,2 Mb/giây.

Internet Mobile
Mobile Internet là   
 


              

Mobile TV
 TV) và




H1TV, HTV3, HTV7, HTV9, O2TV, FashionTV, Channel News Asia, Channel V,
TV5 Asia, NHK, DW, CCTV9, Australia Network; Kênh VOD: Kênh xem phim

8




Mobile Broadband




Cổng thông tin 3G




Các dịch vụ khác

hác.






 mail thông qua



9




IV.A Tổng quan



              
(third- 


2G (the second generation) 

 2000.
IMT  
  
    

giú
       -      
              


 e-
và MP3;  


III. Cấu trúc mạng
Kiến trúc hệ thống UMTS







10


                






và k


 
Uu
Iu
UE

UTRAN CN

Kiến trúc hệ thống UMTS ở mức cao
 

          
 





   
(PLMN).
11

UE UTRAN CN
Uu
Iu
USIM
ME
Cu
Nót B
Nót B
Nót B
Nót B
RNC
RNC
MSC/
VLR

SGSN
HLR
GMSC
GGSN
PLMN, PSTN,
ISDN
Internet
M¹ ng ngoµi
IurIub

Các thành phần của mạng trong PLMN
Thiết bị người sử dụng 
 Thiết bị di động 

 Modul nhận dạng thuê bao UMTS       




 Nút B:  

 Bộ điều khiển mạng vô tuyến        
             

lõi.
Các phần tử chính của mạng lõi GSM:
 HLR (Bộ đăng ký thường trú


 


12





 MSC/VLR (Trung tâm chuyển mạch dịch vụ di động/Bộ đăng ký tạm trú) là




    


 GMSC  (MSC cổng)


 SGSN (Nút hỗ trợ GPRS phục vụ       

 GGSN (Node cổng hỗ trợ GPRS) 

Mạng ngoài 
 Các mạng chuyển mạch kênh

PSTN.
 Các mạng chuyển mạch gó

Các giao diện mở cơ bản của UMTS:
 Giao diện Cu


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