行動通訊簡訊及多媒體訊息
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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. 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:

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4241315
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


4241315

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


4241315

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


4241315

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


4241315

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


4241315

Overview of GSM

GSM Architecture

行動通訊簡訊及多媒體訊息


Overview of gsm
Overview of GSM

GSM Architecture

行動通訊簡訊及多媒體訊息


Overview of gsm1
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 gsm2
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 gsm3
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 gsm4
Overview of GSM

Interfaces in GSM

行動通訊簡訊及多媒體訊息


Overview of gsm5
Overview of GSM

Interfaces in GSM

行動通訊簡訊及多媒體訊息


Overview of gsm6
Overview of GSM

FDMA/TDMA structure of GSM

行動通訊簡訊及多媒體訊息


Overview of gsm7
Overview of GSM

Carrier frequencies,duplexing,and TDMA frames

行動通訊簡訊及多媒體訊息


Overview of gsm8
Overview of GSM

GSM frame structures

行動通訊簡訊及多媒體訊息


Overview of gsm9
Overview of GSM

Bursts of the GSM TDMA

行動通訊簡訊及多媒體訊息


Overview of gsm10
Overview of GSM

行動通訊簡訊及多媒體訊息


Overview of gsm11
Overview of GSM

行動通訊簡訊及多媒體訊息


Overview of gsm12
Overview of GSM

行動通訊簡訊及多媒體訊息


Overview of gsm13
Overview of GSM

行動通訊簡訊及多媒體訊息


Overview of gsm14
Overview of GSM

Classification of Logical Channel in GSM

行動通訊簡訊及多媒體訊息


Overview of gsm15
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 gsm16
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 gsm17
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 gsm18
Overview of GSM

Connection setup for an incoming call

行動通訊簡訊及多媒體訊息


Overview of gsm19
Overview of GSM

Channel Combinations

行動通訊簡訊及多媒體訊息


Overview of gsm20
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 gsm21
Overview of GSM

Air-Interface

行動通訊簡訊及多媒體訊息


Overview of gsm22
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 gsm23
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 gsm24
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 gsm25
Overview of GSM

Abis-Interface

行動通訊簡訊及多媒體訊息


Overview of gsm26
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 gsm27
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 gsm28
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 gsm29
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


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