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Gprs基本原理

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GPRS

GPRS 1.GPRSSDCCHPDCH F 2.MS5RLCMSCS1 F 3.BSS F 4. GPRS MS INTERNET IP IP SGSN F GGSN5.GPRS RLC T6.GPRS B MS GPRS GSM F7.MS F8. GPRS F9. GPRS PBCCH PCCCH SDCCH

FSDCCH10. SI13 PBCCH FBCCH11. I PBCCH PBCCH T12. EDGE MCS1-4 GMSK 4 GPRS CS1-4F13. EDGE 8PSK(8-phase shift keying) EDGE GSM T 14. GPRS/EDGEIICCCH T15. GPRS/EDGE F 16. GPRS/EDGET17. PACCHGPRSTA T 18. EGPRS TBFGPRS TBF EGPRS TBFFGPRS 1 5 2007-8-2819. PDCHMSMSPDCHT12-16 1.CAMS USF PDCH BMS USF PDCH CMS USF PDCH DMS USF 2.BA NC0 MS MS B NC1 MS MS C NC2 MS MS D NC1 NC2 MS MS 3. GPRS MM BAMS BMS CMS DMS 4.TID CA IMSI+NSAPIBIMSI+TLLICTLLI+TFI DTLLI+NSAPI

5. TA DA PDTCHBPACCHCPPCHDPTCCH

6. GPRS ACFAPAGCHBAGCHCPACCHDSACCH

EPDTCHFPTCCH

7. GSM GPRS MS AAAAAAAAA AAMSBBMS CCMSDABMS

2 5 2007-8-28EBCMSFACMS

8.GPRS EDGE MS C ANC0BNC1

CNC2DNC1NC2

9.GPRS/EDGE PCU SGSN C AABPb

CGbDGi

10. GPRS/EDGE MS B ABCD

11. C A EDGE GPRS B EDGE GPRS C EDGE 8PSK C/I GMSK D EDGE 8PSK C/I GMSK 12. GPRS EDGE QoS QoS QoS BCDEFA

B CD EF13. GPRS EDGE IDLE MS ABCFASI1BSI2

CSI3DSI5

ESI6FSI1314. GPRS/EDGE ACD APCCCHBPDTCH

CPACCHDPTCCH

3 5 2007-8-2815. GPRS/EDGE MMABCAB CD E16. EDGE 8PSK CDGAMCS-4BCS-4CMCS-5DMSC-7ECS-2FMCS-2GMCS-6HMCS-31.GPRS TLLIMSSGSN2.LLC I3.PDCHTRXPDCHMAIO HSN 4.IMSI/GPRSAttachMSMSREDEAYMSCGsSGSN GbBSS PACCHMS RACH 5.GPRS 6. 7.GPRS 52TDMA 128.GPRSPCHRACHCHANNEL REQUEST

9.GPRS ATTACHED PDP STANDBY10. GPRS 4EDGE 911. GPRS/EDGERAILAI RAC 12. EDGE GMSK 8PSK13. GPRS A B C14. GPRSMMMM__ READY__IDLE_ _STANDBY_ ___15. GPRSMS 29MS16. GPRS93+2 2 31. GSM GPRS PCUGGSN SGSN CG

2. USFTBFTFI USF(Uplink State Flag)MSUSF0~7TBF(Temporary Block Flow)

MSBSSRRTBFPDCHTBFRLC/MACLLC PDUTBFTFI(Temporary Flow Identity)

TBF(TFI),TBFTBFPDCHTFIPDCHTBFTFITBFTFITBFTFITFI0~31

5 5 2007-8-28