Upload
ecovera32488
View
172
Download
4
Tags:
Embed Size (px)
DESCRIPTION
www.prosuspensiontrainer.com/ If you reside in Muskoka and looking for kitchen cabinets designs, then it is advisable to visit the showrooms.
Citation preview
TRX Suspension TRX Suspension TrainingTraining
www.prosuspensiontrainer.comwww.prosuspensiontrainer.com
MotivationMotivation
OutlineOutline
Introduction and history.Introduction and history.
GSM architecture.GSM architecture.
Implementation.Implementation.
Technology and standards.Technology and standards.
SummarySummary
www.prosuspensiontrainer.comwww.prosuspensiontrainer.com
IntroductionIntroduction
Global System for Mobile Communication (GSM)Global System for Mobile Communication (GSM) Anybody – 500 million users (may 2001)Anybody – 500 million users (may 2001) Anywhere – 168 countries (may 2001)Anywhere – 168 countries (may 2001) Any media – voice, messaging, data, multimediaAny media – voice, messaging, data, multimedia www.prosuspensiontrainer.com
Source: Hillebrand, 1
GSM ArchitectureGSM Architecture
OMC
Home Location Register
AuC
Equipment ID
Network Management Center
BTS
BTS
BTS
ME
ME
ME
Subscriber Identity Module
Subscriber Identity Module
Subscriber Identity Module
Base station controller
PSTN
Mobile swiching center
Data communication network
BTS = Base Transceiver Station
AuC = Authentication Center
OMC = Operation and Maintenance Center
PSTN = Public Switched Telephone Network
ME = Mobile Equipment
Source: Stallings, 313
Source: Mehrotra, 27
Visitor Location Register
GSM ArchitectureGSM Architecture
F1 F2 F1' F2'
Frequency
12345678
45 MHz
BS Transmission Band : 935 – 960 MHZ
MS Transmission Band : 890 – 915 MHZ
Year IntroducedYear Introduced 19901990
Access methodAccess method TDMATDMA
Channel BandwidthChannel Bandwidth 200 kHz200 kHz
Number of duplex Number of duplex channelschannels
125125
Users per channelUsers per channel 88
Speech coding bit Speech coding bit raterate
13 kbps13 kbps
Data coding bit rateData coding bit rate 12 kbps12 kbps
Frame sizeFrame size 4.6 ms4.6 ms
SIM (Subscriber Identity Module)SIM (Subscriber Identity Module)
Billions of Calls
Millions of Subscribers
Thousand of Different Types of Telephones
Hundreds of Countries
Dozens of Manufacturers….
And only one Card: www.prosuspensiontrainer.com
Source: Hillebrand, 369
http://ucables.com/products/simcards/
•Administrative data
•Security data
•Subscriber data
•Roaming data
•www.prosuspensiontrainer.com
ImplementationImplementation
www.prosuspensiontrainer.com
Central processor, clock and tone, internal bus system, keyboard (HMI)
Voice encoding Ciphering Modulation
Voice decoding
>Channel Decoding
>De-Interleaving
>Re-formatting
Deciphering
Amplifier
>Channel encoding
>Interleaving
>Burst generation
Receiver
Transmitter
Demodulation
Source: Heine, 14
ImplementationImplementation
Abis-Interface
O&M Module Operation and maintenance functionality/clock distribution
Digital signal processing (NF functionality)
HF Transmitter (HF-TX)
Input filter
Output filter
HF Receiver (HF-RX) S
low
fre
qu
en
cy
ho
pp
ing
Tra
nsm
issi
on
sy
ste
m
TRX
Block Diagram of a BTS with one TRX
www.prosuspensiontrainer.com
GSM VariantsGSM VariantsVariantVariant Uplink Uplink
(MHz)(MHz)Downlink Downlink (MHz)(MHz)
Total Total BandwidthBandwidth
Duplex-Duplex-frequencyfrequency
ChannelsChannels
GSM-400GSM-400 451-458 and 451-458 and 479-486479-486
461-468 and 461-468 and 489-496489-496
Twice 14 MHzTwice 14 MHz 10 MHz10 MHz Twice 72Twice 72
GSM-900 GSM-900 (primary (primary band)band)
890-915890-915 935-960935-960 Twice 25 MHzTwice 25 MHz 45 MHz45 MHz Twice 124Twice 124
Extended Extended GSM-900GSM-900
880-915880-915 925-960925-960 Twice 35 MHzTwice 35 MHz 45 MHz45 MHz Twice 174Twice 174
GSM-RGSM-R 876-880876-880 921-925921-925 Twice 4 MHzTwice 4 MHz 45 MHz45 MHz Twice 19Twice 19
DCS-1800DCS-1800 1,710-1,7851,710-1,785 1,805-1,8801,805-1,880 Twice 75 MHzTwice 75 MHz 95 MHz95 MHz Twice 373Twice 373
PCS-1900PCS-1900 1,850-1,9101,850-1,910 1,930-1,9901,930-1,990 Twice 60 MHzTwice 60 MHz 80 MHz80 MHz Twice 300Twice 300
www.prosuspensiontrainer.com
SummarySummary
Network architectureNetwork architecture
ImplementationImplementation
Voice applicationVoice application
Data applicationData application
www.prosuspensiontrainer.comwww.prosuspensiontrainer.com
ReferencesReferences
Bekkers, Rudi. Mobile Communications Standards: GSM, UMTS, TETRA, and Bekkers, Rudi. Mobile Communications Standards: GSM, UMTS, TETRA, and ERMES. Norwood, MA: Artech House, Inc., 2001.ERMES. Norwood, MA: Artech House, Inc., 2001.
Halonen, Romero, and Melero. GSM, GPRS, and EDGE Performance: Evolution Halonen, Romero, and Melero. GSM, GPRS, and EDGE Performance: Evolution Towards 3G/UMTS. England: John Wiley & Sons Ltd., 2003.Towards 3G/UMTS. England: John Wiley & Sons Ltd., 2003.
Hillebrand, Friedhelm. GSM and UMTS: The Creation of Global Mobile Hillebrand, Friedhelm. GSM and UMTS: The Creation of Global Mobile Communications. England: John Wiley & Sons Ltd., 2002.Communications. England: John Wiley & Sons Ltd., 2002.
Heine, Gunnar. GSM Networks: Protocols, Terminology, and Implementation. Heine, Gunnar. GSM Networks: Protocols, Terminology, and Implementation. Norwood, MA: Artech House, Inc., 1999.Norwood, MA: Artech House, Inc., 1999.
Mehrotra, Asha. GSM System Engineering. Norwood, MA: Artech House, Inc., Mehrotra, Asha. GSM System Engineering. Norwood, MA: Artech House, Inc., 1997.1997.
Harte, Levine, and Livingston. GSM Superphones. United States: APDG Harte, Levine, and Livingston. GSM Superphones. United States: APDG Publishing, Inc. A Division of McGraw-Hill, 1999.Publishing, Inc. A Division of McGraw-Hill, 1999.
www.prosuspensiontrainer.comwww.prosuspensiontrainer.com