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WCDMA/UMTS 第三代無線通訊系統 無線技術介紹﹝2﹞

1 WCDMAChannelInternetTCP/IPTCP/IPWCDMA: WCDMA WCDMA WCDMA Radio Interface WCDMA Layer 1PHYPhysical LayerChannel:Layer 2MACMedia Access ControlRLCRadio Link ControlPDCPPacket Data Control ProtocolBMCBroadcast and Multicast Control:MACQoSRLCPDCPTCP/IPBMCLayer 3RRCRadio Resource Control PDCPBMCRRCRLCLogical ChannelRLCLogical ChannelMACTransport ChannelMACPhysical Channel Physical ChannelTransport ChannelLogical ChannleRNCGSMBSCBaseStation ControllerWCDMARNCRadio Network ControllerBaseStation UERNC RNCIuPSIuCS Channel WCDMA Radio InterfaceChannel ChannelCommonChannelChannelDedicated ChannelChannelChannel:Broadcast ChannelBCHPaging ChannelPCHForward Access ChannelFACHDownlink Shared ChannelDSCH DownLinkBaseStationUEUpLinkUEBaseStationRLCLogical ChannelMACTrasnport ChannelPhysical Channel Channel RLCLogical Channel RLCChannel DCCHDedicated Control Channel e DTCHDedicated Traffic Channel e CCCHCommon Control Channel e UETransport ChannelFACHDownlinkRACHUpLinkU-RNTI UTRAN Radio Network Temporary Identity RNCRNCRNC CTCHCommon Traffic Channel eDownLink 1 BCCHBroadcast Control Channel eDownLink UEChannel PCCHPaging Control Channel eDownLink Paging MACTransport Channel MACChannel DCHDedicated Channele Transport Channel DedicatedChannel:Soft HandoverCommon ChannelSoft HandoverFast Power ControlFrame CPCHCommon Packet Channel eUpLink CPCHUERACHFast Power ControlCPCHPCPCH RACHRandom Access ChanneleUpLink UE:RACHCell BCHBroadcast Channel eDownLinkCellUEBCHBCHUEChannelCellBCH FACHForward Link Access ChanneleDownLink FACHPCHPaging ChannelPhysical ChannelS-CCPCHSecondary-Common Control Physical ChannelS-CCPCHPCHS-CCPCHFACHDedicatedFast Power ControlRACHFACHBCHFACHFACH DSCHDownlink Shared Channel eDownLinkFACHFast Power ControlFrameDSCHFACHBCHCell PCHPaging Channel eDownLinkPCH:CellCell Physical Channel WCDMAGSMGSMWCDMAChannelWCDMAChannel Channel DPDCHDedicated Physical Data Channel DPCCHDedicated Physical Control Channele DPDCHDPCCHDPDCHDCHDPDCHDPCCH UpLinkDual-Channel QPSKDPDCHDedicated Physical Data ChannelDPCCHDedicated Physical Control ChannelUpLinkSpreading FactorDPCCHDPDCH DPDCHDPCCH UpLinkFrame DPCCHPILOTChannelTFCIFrameDPDCHTFCIDPDCHTFCIDPDCHTFCIDPDCHTFCITFCITPCDownLinkPower Control UpLinkDPDCH2MbpsUE DPCCHPILOTSlotDPDCHTPCDownLink FrameDPCCHTFCIDPDCH DownLinkDPDCHDPCCHQPSKUpLunkDual-Channel QPSKUpLinkDPDCHBPSKDownLinkDPDCH DPDCHDPCCH DownLinkFrame DPDCHDPCCHUpLinkDownLink WCDMA FDD Mode DPDCHDPCCH UpLinkDownLink PCPCHPhysical Common Packet ChanneleUpLinkCPCHUpLinkPCPCH PCPCHPCPCHAccess PreambleCD/CAPCPCHPCPCHDownLinkDPCCHUE PCPCHAICH PCPCHUpLinkDual-Channel QPSKDownLinkDPCCH PCPCH Frame CD/CA-ICH Collision Detection/Channel Assignment Indicator ChannelePCPCHChannelDownLink256UE CSICH CPCH Status Indicator ChannelePCPCHChannelDownLinkAICHPCPCHPCPCHPCPCHAP-AICH CSICH Frame PRACHPhysical Random Access ChanneleUpLinkRACHP-CCPCHBCHPRACHScrambling CodePRACHPRACHPreambleUEPRACHAICHUEAICHPRACHUEPRACHAICH PRACHAICH PRACHUpLink PRACH Frame PDSCHPhysical Downlink Shared ChanneleDownLinkDSCH4256Spreading FactorDownLinkPDSCHDownLinkCellPDSCHPDSCHFrameDPCH (DPCCH/DPDCH)PDSCH DPCCHPDSCHTFCITPCFrameFast Power Control PDSCHPDSCHPDSCHPDSCH UEPDSCHPDSCHDPCCH318Slot PDSCH DPCHDPCCH+DPDCHTiming P-CCPCHPrimary-Common Control Physical ChanneleDownLinkBCHCellUEP-CCPCH256P-CCPCH256 ChipsIdle P-CCPCH Frame P-CCPCHP-CCPCHBCH S-CCPCHSecondary-Common Control Physical ChanneleDownLinkPCHFACHS-CCPCHP-CCPCHS-CCPCHS-CCPCHPCHPICHPaging Indicator Channel S-CCPCHS-CCPCHTPCP-CCPCHTFCIPILOTS-CCPCHP-CCPCH S-CCPCH Frame CPICH Common Pilot ChanneleDownLink256 CPICHScrambling CodeUEDedicatedChannelCPICHPrimary CPICHPrimary CPICHSecondary CPICH CPICHFrameCPICHPre-Define Symbol SequenceUEDedicatedChannel CPICH Frame Secondary CPICHDedicated SCHSynchronisation ChanneleDownLinkWCDMASCHP-SCHPrimary Synchronisation ChannelS-SCHSecondary Synchronisation ChannelCellP-SCH256UEP-SCHS-SCHFrameSlotS-SCHCellScrambling Code Secondary SCHiki063Scrambling Codek014SlotSecondary SCHScrambling CodeScrambling CodeBCH Synchronisation Channel PICHPaging Indicator ChanneleDownLinkPICH256PICHCellPICHPCHS-CCPCHPICHPCHPagingPICHPIPaging IndicatorPagingS-CCPCHPCH PICHS-CCPCHTiming PI288 Bits183672144PI PICHFrame 288 Bits36PI36PIPI8BitsNPIPagingN PI{-1,-1, -1, -1, -1, -1, -1, -1}PagingPIPI{+1,+1,+1,+1,+1,+1,+1,+1}UEPIPagingPCH288 Bits72144PIPI42Bits PI AICH Acquisition Indicator ChanneleDownLinkAICH256AICHCellAICHPower ControlPRACHAICHPRACHPreamleUEPRACH AICHFrame AICH Frame CellChannel UEPrimary SCHSlotSecondary SCHFrameScrambling CodeScrambling Code8Primary Scrambling CodeCPICHCPICHScrambling CodeScrambling CodeP-CCPCHBCH E-Mail: hlchou@mail2000.com.tw […]

WCDMA/UMTS 第三代無線通訊系統 核心網路 架構介紹﹝2﹞

SNSubscriber Numbere1010xxxx1455761455766bytesSubscriber Number 3Packet Data Protocol Context PDP Context PDPPacket Data ProtocolIPX.25PDP ContextPDP ContextPDP ContextIP 1 SGSNPDP Context 2 SGSNPDP ContextQoSSGSNGGSNSGSNGGSNtunnel 3 GGSNISPRADIUSRemote Authentication Dial-In User ServiceIP 4IP RADIUSIPIPIP 1 IPeIPHLRGPRSSGSNHLR 2 IPeGGSNDHCPIP 3 IPeGGSNISPIPISP 4Mobile Station Roaming NumberMSRN MSCMSCMSC MSCMSISDNMSCVLRHLRMSRN PSTNMSISDNGMSCGMSCMSISDNHLRHLRMSC/VLRMSRNHLRHLRGMSCGMSC MSRN MSRN MSRNMSRNLocation AreaLALAIDMSRN PSTNGMSCHLRHLRMSRNGMSCGMSCLAMSRNHLR MSRN : CC + NDC + SN MSISDN 5Temporary Mobile Subscriber IdentityTMSIPacket TMSIP-TMSI TMSIIMSI TMSIMSC/VLRSIMVLRHLR TMSI32 bitesIMSITMSIMSC/VLR TMSIP-TMSISGSNSGSNSGSNSGSNP-TMSISGSNSGSN 6International Mobile Station Equipment Identify (IMEI) IMEIIMEIEIREquipment Identify Rqgister:SIMIMEISIMIMEI IMEI: TAC + FAC + SNR + SP TACType Approval Codee610NokiaEricssonMotorola FACFinal Assembly Codee610 SNR Serial Numbere610SNR SP Sparee1100 7Location Area Identity LAILocation Area ID Broadcast ChannelBCHLAILocation AreaLAILAILAIVLRLocation Update LAILocation Area ID : MCC + MNC + LA Code MCCMobile Country Codee310IMSIMNCIMSIMCC MNCMobile Network Codee2-3bytesIMSIMNCIMSIMNC LA CodeLocation Area Codee Location AreaLAMSC/VLRCellsRouting AreaRASGSNLARAMSC/VLRCellsSGSNUTRAN Registration RreaURAUTRANRNCCell 8 Cell Global IdentityCGI LALocation AreaCellCICell Identifier16 bitsLACell CILAI CGI=LAI + CI =MCC + MNC + LA Code+ CI LAILACILACellCGICell Communication Management WCDMA/UMTSCircuit-SwitchConnection ManagementPacket-SwitchSession Management Circute-SwitchedConnection Management Connection Management PSTNMOCMSC/VLRPTCGMSCPSTNPSTNPOCGMSCMTCMSC/VLR Connection ManagementMSC/VLR42Echo Cancalling EC Packet-SwitchedSession ManagementSessionPacket Data ProtocolPDPSessionPDP ContextPDP ContextSessionQoS:IPPDP ContextQoSQoSQoSPDP Context CISCO2GIP IP3GPP R5IP IP E-Mail: hlchou@mail2000.com.tw […]

Linux上的核心訊息紀錄機制解析

sys_get_kernel_syms “struct kernel_sym *table”,User-ModeSystem Call,table0,table0,for for (mod = module_list, i = 0; […]

CramFS在Linux嵌入式環境的應用

LinuxLinux KernelLinux Kernel LinuxLinuxLinuxRAMDISKRAMDISKRAMDISK RAMDISK50%8MBFlashEmbedded QTSendMail ServerApache Server……16MB8MBFlashLinuxLinux16MBRAMDISK8MB Flash16MB RAMDISK16 MB8MBFlash LinuxCramFS CramFSLinus TorvaldsTransmetaLinux Kernel2.4.3Linux Kernellinux/fs/cramfsCramFSCramFSCramFSFlash CramFSRAMDISK8MBFlashFlashCramFSCramFSRAMDISKPII 350 RAMDISKCramFSRAMDISKRAMDISKLinux Kernel RAMDISK CramFSCramFSRAMDISK CramFS CramFSCramFS Compressed ROM file system support (CONFIG_CRAMFS) CramFSModuleCramFSLinux LinuxPDACramFSX86X86CramFSCramFS Linux linux/scripts/cramfsmkcramfs make mkcramfsmkcramfsLinuxCramFSCramFSmkcramfsSuperblock……CramFSCramFS CramFSCramFSSuperblock76 bytesCramFSinodecramfs_inode12 bytescramfs_inodecramfs_inode0x00 cramfs_inode + 4040cramfs_inode cramfs_inode + + cramfs_inode + + cramfs_inode + ……..CramFS CramFS CramFScheck_cramfsCramFScramfs_supercramfs_inodeSuperblockinode # ./check_cramfs /dev/hdc2 file len:835584 bytes size of superblock:76 bytes Suprtblock =============== magic:28cd3d45h size:10000h flags:0h future:0h signature: 43 6f 6d 70 72 65 73 73 C o m p r e s s 65 64 20 52 4f 4d 46 53 e d R O M F S fsid: 1b 27 36 d8 ce f2 43 f6 ‘ 6 C 0d 4c 90 17 09 b7 04 d4 L name: 43 6f 6d 70 72 65 73 73 C o m p r e s s 65 64 00 00 00 00 00 00 e d mode:41edh uid:0h size:188 gid:0h namelen:0 offset:19 mode:41edh uid:0h size:0 gid:0h namelen:3 offset:0 lost+found mode:41edh uid:0h size:1208 gid:0h namelen:1 offset:66 bin mode:45edh uid:0h size:3536 gid:f4h namelen:1 offset:368 dev mode:45edh uid:0h size:264 gid:f4h namelen:1 offset:1252 etc mode:41edh uid:0h size:184 gid:0h namelen:1 offset:1330 lib mode:a1ffh uid:0h size:9 gid:0h namelen:2 offset:163260 linuxrc mode:45edh uid:0h size:0 gid:f4h namelen:1 offset:0 proc mode:45edh uid:0h size:176 gid:f4h namelen:1 offset:1376 sbin mode:41edh uid:0h size:0 gid:0h namelen:1 offset:0 tmp mode:45edh uid:0h size:0 gid:f4h namelen:1 offset:0 usr mode:41edh uid:0h size:0 gid:0h namelen:1 offset:0 var magiccramfs.h #define CRAMFS_MAGIC 0x28cd3d45 magic0x28cd3d45size Superblockname C o m p r e s s e d Superblock struct cramfs_inode root; […]

Providing Seamless Roaming Service for Mobile Host with Multiple Communication Devices

Table 2 Processing overhead introduced by the proposed adaptive communication system Ethernet (IEEE 802.3) IP datagram receiving (without adaptive communication system) 5.509 Mb/sec IP datagram receiving (with adaptive communication system) 5.308 Mb/sec Percentage of receiving overhead (%) 3.65 IP datagram transmission (without adaptive communication system) 8.776 Mb/sec IP datagram transmission (with adaptive communication system) 8.424 Mb/sec Percentage of transmission overhead (%) 4.001 Figure 6 Snapshoot of the active device controller (I) Figure 7 Snapshoot of the active device controller (II) Figure 8 Snapshoot of the active device controller (III) 5. […]