行動通訊簡訊及多媒體訊息溫志宏博士吳承崧博士蘇暉凱博士國立中正大學電信研究中心

行動通訊簡訊及多媒體訊息溫志宏博士 吳承崧博士蘇暉凱博士國立中正大學電信研究中心行動通訊簡訊及多媒體訊息

Outlines • 課程內容： • GSM Introduction (3 hrs) • GPRS Introduction (3 hrs) • SMS & EMS (3 hrs) (Ref: 3GPP TS 23.040_MMS.pdf) • MMS (9 hrs) (Ref: 3GPP TS 23.140_MMSFD.pdf) • MMS Application (Java 2 Micro Edition) Programming (9 hrs) • 實習： • MMS Application (Java 2 Micro Edition) Programming (9 hrs) 行動通訊簡訊及多媒體訊息

Introduction to TDMA - Features • FDD versus TDD FDD provide two simplex channels at the same time TDD provide two simplex time slots on the same frequency 行動通訊簡訊及多媒體訊息

Introduction to TDMA - Features • A single carrier is divided into time slots. • In each slot, only one user is allowed to either transmit or receive. • Framed structure • TDMA/TDD versus TDMA/FDD • Have been used in the 2nd generation cellular systems, e.g., GSM, ADC, DECT, PACS. 行動通訊簡訊及多媒體訊息

Introduction to TDMA - Features • Bursty (discontinuous) transmission • low battery consumption • mobile assisted handoff (MAHO) • Duplexer is not required (Only switch is required in FDD systems) • Easy to allocate the bandwidth on demand • Adaptive equalization is usually necessary • In the uplink, guard time should be reserved between adjacent slots. • Larger overhead as compared to FDMA 行動通訊簡訊及多媒體訊息

Overview of GSM GSM Architecture 行動通訊簡訊及多媒體訊息

Overview of GSM • ■BTS: • Provide the radio channel for signaling and user data traffic in this cell • ■BSC: • Control ofBTSs • Frequency administration Radio Network 行動通訊簡訊及多媒體訊息

Overview of GSM ■MSC : The major tasks of an MSC are routing incoming andoutgoing callsand the assignment of user channelson the A-interface. ■HLR : An HLR can be regarded as a large database that administers thedata of literally hundreds of thousandsof subscribers. ■VLR : A VLR contains subscriber data, but only part of thedatain theHLRand only while the particular subscriber roams in the area for which theVLR is responsible. ■ISC： Connections to other mobile or international networks are mostly routed over the International Switching Center (ISC) of the respective country. Mobile Switching Network 行動通訊簡訊及多媒體訊息

Overview of GSM ■OMC： Administration and commercial operation Security management Network configuration,performance management ■AUC： Confidential data and keys are stored or generate in AUC ■EIR： Stores the serial numbers of the terminals Operation and Maintenance 行動通訊簡訊及多媒體訊息

Overview of GSM Interfaces in GSM 行動通訊簡訊及多媒體訊息

Overview of GSM FDMA/TDMA structure of GSM 行動通訊簡訊及多媒體訊息

Overview of GSM Carrier frequencies,duplexing,and TDMA frames 行動通訊簡訊及多媒體訊息

Overview of GSM GSM frame structures 行動通訊簡訊及多媒體訊息

Overview of GSM Bursts of the GSM TDMA 行動通訊簡訊及多媒體訊息

Overview of GSM 行動通訊簡訊及多媒體訊息

Overview of GSM Classification of Logical Channel in GSM 行動通訊簡訊及多媒體訊息

Overview of GSM ■FCH Provides the mobile station with the frequency reference of system ■SCH Information to identify a BTS (BSIC) Data for the frame synchronization of an MS (RFN) ■BCCH Characterize the organization of radio network Radio channel configurations (current cell, neighboring cells) Synchronization information ( frequencies,frame number) Registration identifiers (LAI,CI,BSIC) Structural organization of the CCCH of the local base station Broadcast Channel(BCH) 行動通訊簡訊及多媒體訊息

Overview of GSM A CCCH is a unidirectional point-to-multipoint signaling channel to deal with a management function. ■RACH Communication request from MS to BTS ■AGCH Assign an SDCCH or TCH to a MS ■PCH To find a specific mobile station Common Control Channel(CCCH) 行動通訊簡訊及多媒體訊息

Overview of GSM A DCCH is a bidirectional point-to-point signaling channel ■SDCCH Exchange of signaling information between MS and BTS ■SACCH Information for the optimal radio operation ■FACCH Transmission of signaling data during a connection (replaces all or part of a traffic channel) Dedicated Control Channel(DCCH) 行動通訊簡訊及多媒體訊息

Overview of GSM Connection setup for an incoming call 行動通訊簡訊及多媒體訊息

Overview of GSM Channel Combinations 行動通訊簡訊及多媒體訊息

Overview of GSM I Channel combinations V VII I Example of the downlink 行動通訊簡訊及多媒體訊息

Overview of GSM Air-Interface 行動通訊簡訊及多媒體訊息

Overview of GSM ■RR essentially handles the administration of the frequencies and channels ●Monitor BCCH SYStem INFOrmation 1~8 ●Channel management CHANnel REQuest,CHANnel RELease,PARTial RELease, ,PARTial RELease COMplete,ASSignment CoMmanD,ASSignment COMplete,ASSignment FAllure IMMediate ASSignment EXTended, IMMediate ASSignment REJect ●Periodic measurement of channel quality MEASurement REPort ●Handover HaNDover ACCess,HaNDover CoMmanD,HaNDover COMplete, ● Encryption and decryption on the data channel CIPHering MODe COMplete ,CIPHering MODe CoMmand Radio Resource Management(RR) 行動通訊簡訊及多媒體訊息

Overview of GSM ■MM encompasses all the tasks resulting form Mobility (roaming and security function) ●TMSI assignment TMSI REALlocation CoMmanD,TMSI REALlocation COMplete ●Location updating of the MS LOCation UPDating ACCept, LOCation UPDating REJect, LOCation UPDating REQuest ●Authentication of the MS AUTHentication REJect, AUTHentication REQuest, AUTHentication ReSPonse ●IMSI attach and detach procedures IMSI DETach INDication Mobility Management(MM) 行動通訊簡訊及多媒體訊息

Overview of GSM ●Establishment of normal calls ALERTing,CALL PROCeeding,SETUP,CALL CONFirmed, CONnect ACKnowledge, ●Establishment of emergency calls EMERGency SETUP ●Termination of calls DISConnect, RELease COMplete, RELease ●Dual-Tone Multifrequency (DTMF) signaling STOP DTMF, STOP DTMF, START DTMF, START DTMF ACKnowledge,START DTMF REJect ●Call-related supplement services HOLD,HOLD ACKnowledge,HOLD REJect,RETRIEVERE, TRIEVE ACKnowledge, RETRIEVE REJect,NOTIFY ●Incall modification : the service may be changed during a connection MODify,MODify COMplete, MOdify REJect, Call Control (CC) 行動通訊簡訊及多媒體訊息

Overview of GSM Abis-Interface 行動通訊簡訊及多媒體訊息

Overview of GSM RLM (Radio Link Layer Management) Establish and release connection of the link layer between the MS and BTS. ■Establish: ESTablish REQuest ESTablish CONfirm ESTablish INDication ■ Release : RELease REQest RELease CONfirm RELease INDication ■ Signal data transport between MSC and MS: DATA REQest DATA INDication RLM 行動通訊簡訊及多媒體訊息

Overview of GSM CCM (Common Channel Management ) ■ Transfer channel request from MS : CHANnel ReQuireD ■ Start of paging calls : PAGing CoMmanD ■ Modification of BCCH broadcast information : BCCH INFOmation ■Measurement and transfer of CCCH traffic load measurement:: CCCH LOAD INDication ■Channel assignments to the MS : IMMediate ASSign CoMmanD ■Transmission of Cell Broadcast short message : SMS BroadCast REQuest SMS BroadCast CoMmanD CCM 行動通訊簡訊及多媒體訊息

Overview of GSM DCM (Dedicated Channel Management ) ■ Start ciphering : ENCRyption CoMmanD ■ Transfer channel measurement report of an MS: MEASurement RESult ■ Transmitter power control of MS and BTS: MS POWER CONTROL BS POWER CONTROL ■ Handover detection : HANDover DETect ■Modification of a dedicated channel of BTS for a specific MS: MODE MODify REQuest , MODE MODify ACKnowledge MODE MODify Negative ACKnowledge DCM 行動通訊簡訊及多媒體訊息

Overview of GSM TRXM (TRX Management) ■Transfer of measurements of free traffic channels of a TRX to the BSC RF RESource INDication ■Flow control in case of overloaded TRX processors: OVERLOAD TRXM 行動通訊簡訊及多媒體訊息

行動通訊簡訊及多媒體訊息 溫志宏 博士 吳承崧 博士 蘇暉凱 博士 國立中正大學電信研究中心