motorola gprs and edge

8/7/2019 Motorola GPRS and EDGE

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Delivering seamless mobility to the M2M world


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TDMA

Power

Time

Frequency


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CDMA

Time

Power

Frequency


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CDMA/FDMA

Hybrid System: CDMA/FDMA

Power

Time

Frequency


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Re-employing the Frequencies

Channel re-employ


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Technology Informations

EXISTENT TECHNOLOGIES:

AMPS Advanced Mobile Phone System

TDMA - Time Division Multiple Access

CDMA - Code Division Multiple Access

GSM Global System for Mobile Applications


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AMPS:

Operation Frequency: 800Mhz Carrier Width: 30Khz

Number of Channels: 832

Width Between Transmission and Reception: 45Mhz Band width: 25Mhz

Number of users per channel: 1 K factor: 7


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TDMA:






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CDMA:

Operation Frequency: 800Mhz Carrier Width: 1.25Mhz



Number of users per channel: 56 Walsh codes K factor: 1


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Spectrum at 1900MHz

TRANSMISSIONTRANSMISSIONTRANSMISSIONTRANSMISSIONMSMSMSMS BTSBTSBTSBTS

TRANSMISSIONTRANSMISSIONTRANSMISSIONTRANSMISSIONBTSBTSBTSBTS MSMSMSMS

80 MHz

60 MHz

1850185018501850 1910191019101910 1930193019301930 1990199019901990

frequency

299channels of

200 kHz

Generally the rangeis shared among

operators


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GSM850:






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Spectrum at 850MHz

TRANSMISSIONTRANSMISSIONTRANSMISSIONTRANSMISSIONMSMSMSMS BTSBTSBTSBTS

TRANSMISSIONTRANSMISSIONTRANSMISSIONTRANSMISSIONBTSBTSBTSBTS MSMSMSMS

45 MHz

25 MHz

824824824824 849849849849 869869869869 894894894894

frequency

124channels of

200 kHz

Generally the rangeis shared among

operators


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GSM and Cellular Technology

60Mhz75Mhz25MhzBand width

200 kHzCarrier width

299374124Number of carriers

8Channels per carrier

TDMA/FDDAccess method

80 MHz95 MHz45 MHzWidth between TX and RX

1930 1990MHz1805

1880 MHz869 894 MHzMobile Rx Frequencies

1850 1910MHz1710

1785 MHz824 849 MHzMobile Tx Frequencies

PCS1900DCS1800GSM850System

Specifications GSM subsystems


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Slot7

Slot6

Slot5

Slot4

Slot3

Slot2

Slot1

Slot0

15/26 msTime

200 kHz F r e q u e n c

i e s

GSM 850 - 124 x 8 = 992 channelsDCS1800 - 374 x 8 = 2992 channelsPCS1900 - 299 x 8 = 2392 channels


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Slot 1 Slot 2 Slot 3 Slot 4 Slot 5 Slot 6

1 Frame = 8 slots = 4,615 ms = 1250 bits

1 Slot = 0,577 ms

156,25 bits = 15/26 ms

Slot 0 Slot 7

Carrier n

Slot or Time Slot (TS) is the time when the carrier allocated to oneuser (voice or data) or to system control.


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bits

Data

8,25

Training

Stealing bits

BandGuard

Tailbits Data

Tailbits

3 57 1 126 57 3


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GPRS Basic Concepts

GPRS: GENERAL PACKET RADIO SERVICE

HI SPEED DATA TRANSMISSION ALWAYS ON

TCP/IP COMMUNICATION

THE MOBILE IS IDENTIFIED BY AN IP ADDRESS

ALLOW VOICE AND DATA IN THE SAME TERMINAL*


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GPRS Basic Concepts

Operator defines the number of time slots availablefor data and voice

When a GPRS session is started the mobilereceives an IP address

The IP address can be public, or private,valid or non valid, depending on the operator strategy

GGSN Gateway to the external world

Possible to connect to through Internet,VPN or Dedicated Link


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GPRS Basic ConceptsMultiSlot Class Type

Rx Tx CS 1 CS 2 CS 3 CS 41 1 1 9,05 13,4 15,6 21,4 12 2 1 13 2 2 18,1 26,8 31,2 42,8 14 3 1 1

5 2 2 16 3 2 17 3 3 27,15 40,2 46,8 64,2 18 4 1 19 3 2 1

10 4 2 111 4 3 112 4 4 36,2 53,6 62,4 85,6 1

13 3 3 214 4 4 215 5 5 45,25 67 78 107 216 6 6 54,3 80,4 93,6 128,4 217 7 7 63,35 93,8 109,2 149,8 218 8 8 72,4 107,2 124,8 171,2 2

Coding Scheme Data rate kbps

CS 1 9,05CS 2 13,4CS 3 15,6CS 4 21,4

Type 2 MS are reguired to be able to tranmit and receive at the same time

Time slots Data rate kbps


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EDGE Basic Concepts

EDGE :Enhanced Data for Global Evolution. It can be called EGPRS. EDGE is an add-on to GPRS and cant work alone. Increase data Transmission. New modulation technique and error-tolerant

transmission methods. Improved link adaptation mechanisms .


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EDGE Basic Concepts

473,6Kb/s(553Kb/s)160Kb/s(182,4Kb/s)User data rate (8 time slots)

59Kb/s(MCS9)20Kb/s(CS4)User data rate per time slot

69,2Kb/s22,8Kb/sRadio data rate per time slot

810Kb/s270 Kb/sModulation bit rate

270 Ksym/s270 Ksym/sSymbol rate

8-PSK/GMSKGMSKModulation

EDGEGPRS


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EDGE Basic Concepts

Modulation technique 8PSK.

Method linear in which three consecutive bits aremapped onto one symbol in the I/Q plane. The symbol rate is the same as of GMSK, but each

symbol now represents three bits instead of one. The distance between the different symbols is shorter

using 8PSK modulation than when using GMSK.Shorter distances increase the risk for

misinterpretation of the symbols under poor radioconditions.


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EDGE Basic Concepts


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EDGE Basic Concepts

CODING SCHEMES

For EDGE, ninemodulation codingschemes, designatedMCS1 through MCS9,are introduced.The lower four EDGEcoding schemes (MSC1to MSC4) use GMSKwhereas the upper five

(MSC5 to MSC6) use8PSK modulation.


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Introduction to g20

Complete developer kit

Internal PPP stack (TCP and UDP protocols)

Sim Tool Kit (STK) class II over RS232

Wide temparature range ( - 20C + 70C )

Designed to support severe environmental

condictions

Digital and analog audio with sw controlSMS PDU and Text modes


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Introduction to c18

CDMA/1XRTT Module Dual Band 800/1900MHz, AMPS 800MHz

Compatible with g18 and g20 GSM modules

Data - CSD 14,4Kbps and 1xRTT 153,6Kbps

Serial Interface RS232 and USB

Input voltage: 3 - 4,2 Volts DC

Digital and analog audio with sw control

Standard AT commands - IS707A and Motorola property

SMS PDU and Text modes, MT/MO


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Introduction to c18

3 different connectors

Wide Temperature Range Complet Development Kit withAccessories

Emergency through aGPS



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Introduction to G24

Quad band: GSM 850/ 900/ 1800/1900/ E- GSM Small size ( 24.4x45.2x6mm, 11.9

gram) Green product (RoHS) EDGE class 10 GPRS class 10 / class B GSM Internal TCP/IP Stack

Enhanced Audio Capabilities Voice Recognition I/O: 8GPIO / 3A2D Interfaces:

USB

2 Serial RS232 (3 volts logic level) Input voltage: 3 - 4,2 Volts DC G20 100% compatible (SW + HW) Java


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Introduction to G24

Internal PPP stack (TCP and UDP protocols)

Sim Tool Kit (STK) class II over RS232

Wide temparature range ( - 20C + 70C )

2 Serial RS232 and 1SPI bus debbuger

General switches for testing.

Digital and analog audio with sw controlSMS PDU and Text modes



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Developing with g20

Power supply How to buid the power supply, used pins,current consuption, turning on/off, sleep mode.

Hardware manual, item 3.2

Communications Interfaces USB and RS232, ports

specifications, external SIM connection.


Audio Interfaces Digital / Analog



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Developing with g20

Antenas Specifications.


ESD protection


Connector Pin Assignments and Mechanical Description

Hardware manual, item 4 and 5.


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Developing with g20

Modem ID Main ID commands

AT+CMGR

AT+CGSN

AT Commands Manual Item 4.2

Basic Operations Call Control, Voice and DataATDATD;ATAATH


AT+CRCAT+CSNSATS0=nATO / +++

AT+CIMIATI_


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Developing with g20

Basic Operations SMS, main commands

AT+CMGFAT+CNMIAT+CMGLAT+CMGR


GPRS Configuration

AT+CGDCONTAT+CGPRSAT+CGATT


ATD*99#ATD*99***1#

AT+CMSSAT+CMGWAT+CMGDAT+CMGS


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Developing with g20

GPRS TCP/IP +MIP commands

AT+MIPCALLAT+MIPOPENAT+MIPCLOSEAT+MIPSETSAT+MIPSENDAT+MIPPUSHAT+MIPFLUSH

AT Commands Manual Item 4.15.2

+MIPRUDP+MIPRTCP+MIPSTAT


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Developing with g20

MUX Feature RS232 Multiplexer


Evaluation Board Basic Information

Evaluation board manual


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Aniceto Ortega 817 PBCol. Del Valle03100, Mxico, D.F.

Tel. (55) 5575 6204 Ext. 160

Fax. (55) 5575 [email protected]

motorola gprs and edge

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