Download - 3 - Umts - Class
-
8/13/2019 3 - Umts - Class
1/22
UMTS:UniversalMobileTelecommunicationsSystem
-
8/13/2019 3 - Umts - Class
2/22
UMTS: Characteristics
Standardized by ETSI: European Telecommunication
Standards Institute
UMTS is the European implementation in the frame of
International Mobile Telecommunications (2000)
integration of different mobile radio communications-,
wireless- and pager-systems into one common systemspeech-, data-, and multimedia- information services
independent of network access
support of different carrier services:
real-time capable / not real-time capable circuit switched / packet switched
provided data rates: 144 kbit/s mobile, up to 2 Mbit/s in localarea (and even higher with advanced extension protocols)Asymmetrical data rates on up-/downlink, use of CDMARoaming also between UMTS, GSM/GPRS and satellite
networks
2
-
8/13/2019 3 - Umts - Class
3/22
UMTS-Performance
UMTS
GPRS
GSM Video
~0sec 10sec 1min 10min 1h
source:MobilkomAustria3
Report
Video
Photo
Web
Photo
Report
Video
Mail
Web
Photo
Report
Transmission Real- time (Video) Non Real-time (SMS etc.)
Bit error rate 10-3 10-7 10-5 10-8
Permitted delay 20ms 300ms > 150 ms
-
8/13/2019 3 - Umts - Class
4/22
UMTS UserEquipment
big color displays
high resolution
True Color
multitouch
Examples: Nokia,Apple, Blackberry
UMTS/WLAN-Router
with 300 MBit/s W-LAN-HotspotPC Card Slot for Vodafone Mobile Connect Card4 Port Ethernet Switch local networks
UMTS
5
-
8/13/2019 3 - Umts - Class
5/22
UMTS-Frequencies
Betreiber Uplink Downlink
Vodafone 1930 1935 MHz 2120 2125 MHz
E-Plus 1940 1950 MHz 2130 2140 MHz
O2 1954 1959 MHz 2144 2149 MHz
Telekom Deutschland GmbH 1969 1979 MHz 2159 2169 MHz
6
O2 1959,9 1969,8 MHz 2149,9 2159,8 MHz
E-Plus 1950,0 1954,95 MHz 2140,0 2144,95 MHz
E-Plus 1935,15 1940,1 MHz 2125,15 2130,1 MHz
Vodafone 1920,3 1930,2 MHz 2110,3 2120,2 MHz
-
8/13/2019 3 - Umts - Class
6/22
UMTS-radio interface UTRA(UMTS Terrestrial Radio Access)
Two modes defined:
UTRA/FDD (Frequency Division Duplex)
mainly in suburban areas for symmetrical transmission
speech and videodata rates up to 384 kbit/s, supra-regional roaming
of
for circuit- and packet switched services in urbanareas
UTRA/TDD (Time Division Duplex)
mainly in households and other restricted areas(company premises, similar to DECT)for broadcast of speech and video, symmetrical:
up to 384 kbit/salso asymmetrical: up to 2 Mbit/s
7
-
8/13/2019 3 - Umts - Class
7/22
UTRA/FDD
integrates wideband-CDMA (W-CDMA) and DSSS (DirectSequence Spread Spectrum)channel separation by carrier frequencies, spreadingcode and phase position (only uplink)approx. 250 channels, data rates up to 384 kbit/s
complex performancecontrolnecessary
f in MHz
2169...
downlink2110
190MHz
1979 5 MHz..
.
uplink1920
t8
carrier 1
carrier 12
carrier 1
carrier 12
-
8/13/2019 3 - Umts - Class
8/22
UTRA/TDD
integrates wideband-TDMA/CDMA and DSSS
sends and receives on same carrier (TDD)approx. 120 channels, data rates up to 2 Mbit/schannel separation by spread codeand timeslotsprecisesynchronization necessary
f in MHz
uplink downlink
2020
2010
1920 5 MHz...
1900
t 9
carrier 1
carrier 4
carrier 5
carrier 6
-
8/13/2019 3 - Umts - Class
9/22
Service concept
Virtual Home Environment (VHE)
services are freely configurable, configuration globallyavailableselection of service quality and corresponding costs
behavior in case of bottlenecks (data rates, etc.)
configurable
dynamic adaptation according to connection quality
UPT: Universal Personal Telecommunication Service
one phone number for several devices (Call-Management)subscriber localization e.g. based on SIM-card
call forwarding; virtual mobility by changing between
devices
11
-
8/13/2019 3 - Umts - Class
10/22
UMTS: Hierarchical CellStructure
Global Regional
Local
Home/Office
PicoMicroWorld Macro
12
expansion Data
rate
(kbit/s)
Max.
velocity
(km/h)
Special features
World Cell global - no UTRAN, special satellite technology
Macro Cell several km 144 >300 complete national wide-area UMTS support
Micro Cell several 100m 384 ~100 Greater cities, commonly used
Pico Cell ca. 100 m 2000 ~10 Hotspotse.g. airport, station
-
8/13/2019 3 - Umts - Class
11/22
UMTS Enhancement: HSPA
HSPA (High-speed Packet Access) = HSDPA+HSUPA
HSDPA (High-speed Downlink Packet Access), extensionof UMTS
Data rates up to 14,4 Mbit/s (10,8 Mbit/s with error-
correction encoding) on downlink channel
(even higher rates proposed for the future and testedunder lab conditions)
Combination of channel bundling (TDMA), wideband codemultiplex (W-CDMA) and improved coding (adaptivemodulation and coding with advanced scheduling)
adaptive switching between 4 QAM (quadratureamplitude modulation) and 16 QAM (depending onchannel quality)
HSUPA (High-speed Uplink Packet Access) for upload
13
-
8/13/2019 3 - Umts - Class
12/22
UMTS Enhancement: HSPA+
HSPA+ further enhancement of UMTS
Data rates up to 28 Mbit/s on downlink channel
Speed-up reached via 64 QAM and MIMO (multiple
/ multiple output)Same as in HSPA:
Separate control channel Basis for mobile internet and mobile multimedia
input
applications(videophone,movies,gamesetc.)
14
-
8/13/2019 3 - Umts - Class
13/22
HSPA+: Modulation basics of QAM
QAM (Quadrature Amplitude Modulation) isa combination
PSK
ofAmplitude
ShiftKeyingASKandPhaseShiftKeying
15
ASK PSK (P=90 PSK(P=180 PSK(P=270 ASK+PSK(A=1/2) =1/4) =1/2) =3/4) (A=1/2,
P=90)
t t t t t
-
8/13/2019 3 - Umts - Class
14/22
HSPA+:ModulationbasicsofQAM
8 QAM
example:(3bits)
In case of8 QAM the 8 conforms to the
highest possible number of codablestates (the sensitivityto interferenceincreaseswiththenumberof
* Quadrature Phase Shift Keying =4QAM(noinfofromamplitude)source: Fujitsu 16
Bit value 000 001 010 011 100 101 110 111
Amplitude 1 1/2 1 1/2 1 1/2 1 1/2
Phase Shift No No 1/4 1/4 1/2 1/2 3/4 3/4
states)
-
8/13/2019 3 - Umts - Class
15/22
HSPA+: MIMO antenna technique
MIMO = Multiple Input / Multiple Output
multiple antennas on sender and receiver side
increase in spectraltransmission
efficiency(andresultingdatarate)andqualityof
Rx2
17
Receiver
2x2 MIMO
Rx1
Input TxMIMO
Output
Single Input / Single Output
Input Tx Rx Output
-
8/13/2019 3 - Umts - Class
16/22
IMT-Structure3 systems- UMTS- CDMA2000
- UWC-1362 core technologies- TDMA- TDMA/CDMA
IMT family of radiointerfaces : IMT-DS (Direct Spread)
UTRA-FDD (UMTS)
IMT-MC (Multi Carrier)
CDMA2000, USAIMT-TC (Time Code)
Satellite-supported network expansion:-
---
SW-CDMA: Satellite Wideband CMDA
UTRA-TDD (UMTS), TD-SCDMA (SynchronousCode Division MultipleAccess, China)
SAT-CDMA:SatelliteCDMAICORTT:ICORadioTransmissionTechnologySW-CDTMA: Satellite Wideband CDMA/TDMA
(Hybrid procedure)In Europe
UMTS IMT-SC (Single Carrier)
UWC-136, USA
IMT-FT (Frequency time)
DECT
18
ICO RTT... Standard by ICO Global CommunicationsIMT ... International Mobile TelecommunicationsUTRA ... Universal Terrestrial Radio AccessUWC ... Universal Wireless Communications
source: www.UMTS-Report.com
individual
carrier
IMT-SC UWC-136 (EDGE)
TDMA
IMT-FT DECTmultiplecarrier
UTRA-FDD
IMT
IMT-DS
FDD
IMT-MC CDMA2000TDMA/
CDMA
UTRA-TDDTDD IMT-TC
TD-SCDMA
http://www.umts-report.com/http://www.umts-report.com/http://www.umts-report.com/http://www.umts-report.com/http://www.umts-report.com/http://www.umts-report.com/http://www.umts-report.com/http://www.umts-report.com/http://www.umts-report.com/http://www.umts-report.com/http://www.umts-report.com/http://www.umts-report.com/http://www.umts-report.com/http://www.umts-report.com/ -
8/13/2019 3 - Umts - Class
17/22
MSS Mobile Satellite Service
PHS... Personal Handy-Phone System
Worldwidefrequencyassignment for IMTdevelopedbyITU
PCS... Personal Communication System
19
-
8/13/2019 3 - Umts - Class
18/22
FrequencyAssignment in Europe
230MHzfrequencyrangeforIMT
1700 1750 1800 1850 1900 1950 2000 2050 2100 2150 2200
MSSSatellite- based
with FDD symmetrical spectrum is necessary, not with TDD(time slots at same frequency)
gradual assignment of new wavebands - up to 300-500 MHz
additional frequency range, e.g. in the 2.5-3 GHz area, but
also in the 900 MHz band (as a gradual replacement of GSM)
source: www.UMTS-Report.com 20
DE
CT
TD
D
TD
D
GSM1800
Uplink
GSM1800
Downlink
FDD
Uplink
MSS
FDD
Downlink
MSS
http://www.umts-report.com/http://www.umts-report.com/http://www.umts-report.com/http://www.umts-report.com/http://www.umts-report.com/http://www.umts-report.com/http://www.umts-report.com/http://www.umts-report.com/http://www.umts-report.com/http://www.umts-report.com/http://www.umts-report.com/http://www.umts-report.com/http://www.umts-report.com/http://www.umts-report.com/ -
8/13/2019 3 - Umts - Class
19/22
ComparisonBandwith(download)
300 Mbit/sWLAN 802.11 LTE
100 Mbit/sHSDPA/ HSDPA+
10 Mbit/s
1 Mbit/s
100 Mbit/s
10 Kbit/s
1 Kbit/s
21
-
8/13/2019 3 - Umts - Class
20/22
UMTS: Summary
After delayed implementation and introduction, UMTS
caught up and is now widely used, especially for businessapplications
High-performance service is mainly limited to urbanareas, otherwise GPRS has to be used
Worldwide accessibility can be realized only withmultimode end devices (e.g. combining different CDMAvariants)
even in Europe, combined UTRA-FDD/UTRA-TDD/GPRS
devices are necessary (however, this imposes no majorhardware problems)
Typical alternatives to UMTS are WLAN, LTE and WiMAX
22
-
8/13/2019 3 - Umts - Class
21/22
Data rate enhancement: Summary
Usage of improved transmission schemes such as 16QAM or
64QAM (quadrature amplitude modulation, with phase shiftkeying)
CDMA to offer more channels in parallel
Bundling of time slots, especially for downlink, in combinationwith asymmetric TDD
Smaller (pico) cells, i.e. less participantsresources
compete for thesame
+ enhancement in latency (GPRS: 700 ms,HSPA: 100 ms, LTE: 5 ms)
UMTS: 200-300ms,
23
-
8/13/2019 3 - Umts - Class
22/22
Some further readings
3GPP (3rd generation partnership
www.3gpp.org
program):
UMTS background information:
www.umtsworld.com
www.umtslink.at
24
http://www.3gpp.org/http://www.umtsworld.com/http://www.umtslink.at/http://www.umtslink.at/http://www.umtslink.at/http://www.umtslink.at/http://www.umtslink.at/http://www.umtslink.at/http://www.umtslink.at/http://www.umtslink.at/http://www.umtslink.at/http://www.umtslink.at/http://www.umtslink.at/http://www.umtslink.at/http://www.umtsworld.com/http://www.umtsworld.com/http://www.umtsworld.com/http://www.umtsworld.com/http://www.umtsworld.com/http://www.umtsworld.com/http://www.umtsworld.com/http://www.umtsworld.com/http://www.umtsworld.com/http://www.umtsworld.com/http://www.3gpp.org/http://www.3gpp.org/http://www.3gpp.org/http://www.3gpp.org/http://www.3gpp.org/http://www.3gpp.org/http://www.3gpp.org/