Nghiên ứu các giải pháp tối ưu hóa chất lượng mạng bằng call trace logfile

   _ _    PHÁP     : TS  , - 2018 Tai ngay!!! Ban co the xoa dong chu nay!!! 17057204814721000000   iii  iv  vii  1:  u    .6   10  11 -CDMA/HSPA 13 -CDMA/HSPDA 14 1.4.3 - .16  18 1.5.1 -A 18 1.5.2 TE-A .19 1.5.3  21  21 :  22 2.1 Các thông  .22  .23  25  25  28  29  :          TRÊN  .30  30 i 3.1.1  30  32  .35 ng 35  .35  36  36  42  43  43  44  44  44  49  52 3.4.5 Thông l 55  59  60  - 60  62  .68  72  73 g 74  74  74  75   ii   22  .23  25  26  27  28  45  .45  47  .47  .49  49  53  53  56   56 iii     10  13  16 - 3G MobiFone 17  19 -CDMA 3G sang LTE  4G 20  MLMN  MobiFone 34  34  36  37  37  38  38  39  41  .41 -Outdoor 46 -  47 Hình 3.13 - Trong nhà .48 - Trong nhà 49 -  50 - Ngoài  .50 - Trong nhà 51                  10612- Trong nhà 52 iv   54  55  57  58  .59  60  61 -106 61 -114 62 -  .63  -  Drive test 63 -  .64  .65  test 65 -  66  66      pháp Drive test 67 Hình 3.36  67  68  69 - Lãnh Bình  69  70  Drive test 70 v  71  Drive test 71 -  .72 -  72  .73                 CMT8 73 vi     3G AMR BSC BSS BTS 3rd Generation Adaptive Multirate Base Station Controller Base Station Subsystem Base Transceiver Station CCPCH Common Control Physical Channel       CEPT CDMA CN EC EIR ETSI FDD Conference of European Post and  thông Telecommunication Code Division Multiple Access Châu Âu  mã Core Network European Commission Equipment Identity Register European Telecommunications     Standards Institute Âu  Frequency Division Duplex Frequency Division Multiple File Transfer Protocol Gateway GPRS Support Node General Packet Radio Services Global Position System Global System for Mobile Home Location Register High-speed Downlink Packet-data          Access  HTTP Hypertext Transfer Protocol  IMS IP Multimedia Subsystem International Mobile Equipment   Identity International Mobile Subscriber   Identity  FDMA FTP GGSN GPRS GPS GSM HLR HSDPA IMEI IMSI vii IN ISDN Intelligent Network Integrated Services for Digital   Network   LTE Long-Term Evolution MMS MS RNC RSCP RSSI RTT SIM SIR SGSN SMS SMS-C Multimedia Messaging Service Mobile Station Radio Network Controller Received Signal Code Power Received Signal Strength Indicator Round Trip Time Subscriber Identity Module Signal to Interference Ratio Serving GPRS Support Node Short Message Service Short Message Service Center TDMA Time Division Multiple Access UE User Equipment Universal Mobile   Telecommunications System  UMTS Radio Access Network UMTS Terresrial Radio Access   Network Visitor Location Register Wideband Code Division Multiple UMTS   Access theo mã UMTS URAN UTRAN VLR WCDMA viii      T       gian    2G/  4G         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  giá,                   MobiFone D    sau: 1 - 