Spectrum for Mobile
Multimedia Services
Funk-Frequenzen für
Mobile Multimediadienste
Professor David Crawford
University of Essex, UK
den 13 Oktober 2006
Wireless Communication & Information Konferenz
Berlin, Germany
0
5
10
15
20
25
30
Aud
ienc
e (%
)
Top channels Special interest
Many channels
broadcast multicast unicast
Broadcasting, Multicasting, Unicasting
Broadcasting to Mobiles
Single Frequency Network
Contenders for Multimedia Broadcasting
DAB-IP UK and Scandanavia
DVB-H Europe and USA
T-DMB Korea
S-DMB Korea and China
ISDB-T Japan (and Brazil)
FLO USA
TDtv UK and Europe
MBMS Europe
DMB-TH China
Timeslicing in DVB-H
Multi-Protocol Encapsulation FEC
GuardGuard
IntervalIntervalUsefulUseful
PeriodPeriod
OFDM symbolOFDM symbol
Orthogonal
Carrier
Spacing
OrthogonalOrthogonal
CarrierCarrier
SpacingSpacing
COFDMCOFDM
TimeTimeTime
frequency
frequency
frequency
256
512
1K
2K2K2K
4K4K4K
8K8K
6/.. MHZ6/7/8 MHz5/6/7/8 MHz1,5 MHz
FLOISDBDVBDAB
DVB-T vs DVB-H(8K - gi 1/4 - 16QAM 2/3 - MPE-FEC 3/4)
13,27 Mbps
0.0 dB
10.0 dB
20.0 dB
30.0 dB
40.0 dB
50.0 dB
0 Hz 1 Hz 10 Hz 100 Hz 1000 Hz
DVB-H @ FER 5%
DVB-H @ MFER 5%
DVB-T "Rayleigh"
470 MHz UHF Band IV (21)
854 MHz UHF Band V (69)
470 MHz UHF Band IV (21)470 MHz UHF Band IV (21)
854 MHz UHF Band V (69)854 MHz UHF Band V (69)
1 km/h
0,4 km/h
1 km/h1 km/h
0,4 km/h0,4 km/h
2 km/h
1 km/h
2 km/h2 km/h
1 km/h1 km/h
7 km/h
4 km/h
7 km/h7 km/h
4 km/h4 km/h
23 km/h
13 km/h
23 km/h23 km/h
13 km/h13 km/h
69 km/h
38 km/h
69 km/h69 km/h
38 km/h38 km/h
230 km/h
126 km/h
230 km/h230 km/h
126 km/h126 km/h
689 km/h
379 km/h
689 km/h689 km/h
379 km/h379 km/hTU6TU6TU6
Flat Behaviour
Until Max Speed
Flat BehaviourFlat Behaviour
Until Max SpeedUntil Max Speed
Mobile Performances : “C/N versus Doppler”
DVB-HMPE-FECGAIN :
5 to 9 dB (Mobile)
DVB-HDVB-H
MPE-FECMPE-FEC
GAIN :GAIN :
5 to 9 dB 5 to 9 dB
(Mobile)(Mobile)
QPSK 1/2 (5 Mbps)QPSK 1/2 (5 Mbps)
16QAM 2/3 (13 Mbps)16QAM 2/3 (13 Mbps)
DVB-TDVB-T
MobileMobile
PenaltyPenalty
6 to 12 dB6 to 12 dB
DVB-H GainDVB-H Gain
AreaArea
DVB-HMPE-FECGAIN :
2 to 5 dB (Pedestrian)
DVB-HDVB-H
MPE-FECMPE-FEC
GAIN :GAIN :
2 to 5 dB 2 to 5 dB
(Pedestrian)(Pedestrian)64QAM 2/3 (20 Mbps)64QAM 2/3 (20 Mbps)
Christian AndreasChristian Andreas
DOPPLERDOPPLER(1803-1853)(1803-1853)
)cos(=C
fVf
rf
D
T
Services and Platform Stack
Unicast videoover 3G networks
Unicast 3G networks
Broadcastnetworks
Unicast video over WiMAX
networks
WiMAX networks
Possible multicastOptimization implementation
HSDPA 3GLTE
Interactivity Unlimited channels
2006 2007 20082005 Beyond 2008
Unlimited usage Access Everywhere
WiMAX(2.5/3.5 GHz)
MBMS service launches
2010: Massive DVB-H
deploymentDVB-H
(470-700 MHz)
DVB-H trials, local implementationsBroadcast (simulcast) of TV channel
DVB-H+ Broadcastterrestrial launch
DVB-H+National coverage
DVB-H+(2170-2200 MHz)
DVB-H+ trials
Road Map
9 TVchannels
27 TVchannelsunlimited
channels
UMTS
band
2 GHz
MSS band
2G/3G
Hybrid System
sat
EIRP
Suitability of Spectrum Bands for Mobile TV
174 470 854 1452 1492 1550 2450 2600 2700 3000
Band III Bands IV, V L Band ISM Band S Band MHz
DAB Mil TV ATV DTV GSM Mil DAB DECT UMTS 4G Sat _wave
Mob Radio (HDTV) GSM
TETRA
LW
MW
FM
EIRP
1452 1467.5 1479.5 1492 MHz
MA-02 : T-DAB plan
LJ LK LL LM LN LO LPLA LB LC LD LE LF LG LH LI
1.536 MHz
1.712 MHz
ECC/DEC/(03)02 :S-DAB
Hybrid Terrestrial/Satellite
RRC-06 Digital Radio & TV Spectrum Planning for VHF/UHF
Time Schedule for RRC
Who is involved …..?
1st Level Results
Flexibility in RRC06/GE06
The Planning
Less Planning Restraints Inland
Results of RRC06/GE06
Conclusions of RRC06
Transition from analogue to digital broadcasting will beJune 2006 – June 2015
Using complex software planning tools, the RRC hasgenerated a draft plan for the co-ordinated introduction ofdigital broadcasting for Radio and TV in Bands III, IV andV, covering 70,500 requirements
The Conference was a good starting point for the planningof mobile multimedia services using small inlandallotments. But for continental coverage, a Europeanharmonised frequency band has still to be found
The World Radiocomms Conference (WRC-07) will meet inAugust 2007 to recommend guidelines for the regulatoryaspects for usage of spectrum for new and existing digitalservices, this could include L-Band & S-Band
Danke!
Thank You
Professor David Crawford
University of Essex, UK
tel: +44-1206-874495
email: [email protected]
