side (irt 3930) - ttu.ee (irt 3930) loeng 12/2011 mobiilne lairiba ... (link budget) teenused 443 10...
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Teenused 441
SIDE (IRT 3930)
Loeng 12/2011
Mobiilne lairiba
Teema - teenused
Avo Ots telekommunikatsiooni õppetool,
TTÜ raadio- ja sidetehnika inst.
Teenused 442
UMTS ootused
Arendaja
Parema
kvaliteediga
teenused
- Kõrge spektriefektiivsus
- Odav käigushoidmine
- Lihtne võrguarendus
- Tulevikuga
- Globaalne standard
- Suur võrgu kasutus-
intensiivsus
• Suurem bitikiirus
• Q-o-S
- Paremad terminaalid
- Globaalne turg
Operaator
Tarbija
“Kulud ja tulud” (link budget)
Teenused 443
10 W
10 dB
6 dB Sumbuvus ?
TA = 8 30 dB/km
Teenused 444
WCDMA
• 5 MHz carriers
• Frequency Division Duplex, FDD
• 3.84 Mcps chip rate
• Variable spreading codes
f
t
10 (2) ms frame
5.0 MHz
P
• Optimized packet access on common or dedicated channel
• High spectrum efficiency
Sageduskasutus UMTS tarvis
Teenused 445
Versioonid (...UMTS)
Teenused 446
2000 2002 2004 2006 2007 2005 2003 2001
3GPP Rel -99
12/99
3GPP Rel 4
03/01
3GPP Rel 5
03/02
3GPP Rel 6
2H/04
3GPP Rel 7
06/07 Further Releases
Japan Europe
(pre-commercial)
Europe
(commercial)
HSDPA
(commercial) HSUPA
(commercial)
Mobiilne andmeside
Teenused 447
EDGE
GPRS GSM
HSCSD
cdmaOne (IS-95)
WCDMA FDD
HSDPA/ HSUPA
cdma2000
TD-SCDMA TDD LCR
cdma2000 1XEV - DO
cdma2000 1XEV - DV
TD-CDMA TDD HCR
HSDPA/ HSUPA
LTE
Teenused 448
Ühildatavus
Access to people and information
GSM/UMTS dual-mode terminals
GSM terminals
UMTS terminals
GSM Radio Access
UMTS Radio Access
GSM/UMTS Core Network
Internet/ Intranet +
PSTN/ ISDN +
GRAN (Iu) A
Access to
information
and people
(Data, Multi-
media)
Access to
people
(Voice, Video)
Struktuur ja seosed
Teenused 449
Uu Iu
Node B
Node B
Node B
USIM
ME
Cu
RNC
RNC
Node B
HLRIub Iur
MSC/VLR
SGSN
GMSC
GGSNUE
External
networks
PLMN
PSTN
ISDN
Internet
UTRAN CN
Teenused 450
FDD või TDD
f
t
UL DL
Duplex gap D f D f f
t
UL
DL
2 D f
Guard
period
Frequency division duplex (FDD) Time division duplex (TDD)
451
Sagedusressurss (UMTS tarvis)
20 (35) MHz for TDD
2 * 60 MHz FDD (190 Mhz)
1850
1900
2000 2050 2100 2200 2250
20 20 60 30 15 30
DECT
MHz
GSM 1800
60
1920 2110
Teenused 452
• IS-95 (1.25 MHz)
• CDMA2000 (3.75 MHz)
• WCDMA (5 MHz)
f
Code
t
MS 1
MS 2
MS 3
5 MHz
Direct Sequence - Code Division Multiple Access
(DS-CDMA)
Teenused 453
CDMA vs WCDMA
1.25 MHz. 1.25 MHz.
F1 F2 F3
GUARD GUARD
СDMA2000
1X 1Х
EVDO
5 MHz.
GUARD GUARD
Wideband Carrier
WCDMA (UMTS)
Teenused 454
Hajutatud spektriga süsteem
Teenused 455
Hajutatud spekter Spread Spectrum
Teenused 456
Hajutustegur SF = 4
Teenused 457
Spreading Factor
Chiprate Mchips/s
User Bitrate kbit/s
3,84
3,84
3,84
3,84
3,84
3,84
3,84
256
128
64
32
16
8
4
15
30
60
120
240
480
960
Bitikiirus kasutaja tarvis
Teenused 458
Edasiarendus GSM-ist
RNS
RNC
RNS
RNC
UMTS Core Network
Node B Node B Node B Node B
Iu Iu
Iur
Iub Iub Iub Iub
Uu
Ch
an
ne
l
4s
a
k
d
j
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f
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l
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q
w
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f
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ö
l
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k
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f
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w
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u
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k
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c
.
UE
UTRAN
BSC BSC
Core Network
BTS BTS BTS BTS
A A
Abis Abis Abis Abis
Um
UE
GSM BSS
GSM
Teenused 459
3GPP (asutamine)
ETSI Members
ETSI
ARIB Members
ARIB
TTA Members
TTA
T1P1 Members
T1P1
TTC Members
TTC
Europe Japan USA Japan Korea
3GPP 3GPP
Teenused 460
GSM & UMTS
S D
Mobile Station
MSC/
VLR
Base Station
Subsystem
GMSC
Network Subsystem
AUC EIR HLR
Other Networks
GGSN SGSN
BTS BSC
Node
B
RNC
RNS
UTRAN
SIM ME
USIM ME
+
PSTN
PLMN
Internet
Teenused 461
Kanalid ja realisatsioonid
Bearer request
Traffic Class, Max. Bit rate, Max. Delay, Residual BER ...
Radio Bearer Negotiation
Requested QoS, Priority, Maximizing System Capacity
UTRAN realisation
Coding Scheme, MAC and RLC Settings, Spreading Factor, Transport
Format Parameters, Interleaving ...
Teenused 462
Erinevad kandekanalid
TE MT UTRAN CN CN Gateway TE
UMTS
TE/MT Local Bearer Service
UMTS Bearer Service External Bearer Service
UMTS Bearer Service
Radio Access Bearer Service CN Bearer
Service
Backbone
Bearer Service
Iu Bearer
Service
Radio Bearer
Service
UTRA FDD/TDD
Service
Physical
Bearer Service
End-to end service
UMTS bearer service
Teenused 463
Radio Resource Control (RRC)
Medium Access Control (MAC)
Transport channels
- grouped by method of transport
Physical layer
Layer 3
Logical channels - grouped by information content
- User Data
- Control and
signaling
Layer 2
Layer 1
Air Interface Direct RRC control of the physical layer
Physical channels
Physical Channels Distinguished by:
- RF Frequency
- Channelization Code
- Spreading Code
- Modulation (I/Q) Phase (uplink)
- Timeslot (TDD mode)
UTRAN OSI Model
Teenused 464
Raadiokanalid Radio Access Bearers
• RAB tagab ühendusse UTRAN-is.
• RAB ühendusel on olenevalt teenustest
erinevad parameetrid
RNC Core Network
Node B UE
Radio Access Bearer
UTRAN
“Kärjevahetus”
Teenused 465
UE1
BS 1 BS 2
Teenused 466
Soft Handover (Add/Drop)
ADD RP DR
pilot
Teenused 467
Soft Handover
UE
•UE (mobiil) ühendub mitme samal sagedusel
töötava tugijaamaga
•Vajame mitmekiirelist vastuvõtjat => RAKE
Teenused 468
Koodmultipleksimisega ühispöördus
“CDMA” = SSMA + Orthogonal Coding
(IS-95, cdma2000, WCDMA)
Spread Spectrum Multiple Access (SSMA) Allows multiple CDMA transmitters Pseudo Noise (PN) codes
to share the same Radio Frequency
Orthogonal Coding Channelization codes : Allows multiple data channels
to co-exist within each CDMA transmission
Teenused 469
Kanalimoodustamise koodid Channelization codes
CC1 & CC2 CC3,CC4 & CC5
Allalülis kasutatakse kanalikoode kanalite eristamiseks samas tugijaamas. In the Downlink Orthogonal Codes are used to distinguish
between data channels from the same Base Station
CC1,CC2,CC3 CC1 & CC2
Üleslülis kasutatakse kanalikoode kanalite eristamiseks samas mobiilis. In the Uplink Orthogonal Codes are used to
distinguish between data channels from the same mobile
Teenused 470
PN code 1
PN code 3
PN code 1
PN code 4
BS 1 transmits on PN code 1
PN code 2
PN code 5
PN code 2
PN code 6
BS 2 transmits on PN code 2
Pseudojuhuslikud koodid Pseudo Noise (PN) codes
Teenused 471
Kanalid ja teenused
2 data channels
(voice, control)
PN3 + OC1 + OC2
2 data channels
(14 kbps data, control)
PN4 + OC1 + OC2
3 data channels
(voice, video, control)
PN2 + OC1 + OC2 + OC3
3 data channels
(voice, video, control)
PN5 + OC1 + OC2
4 data channels
(384 kbps data, voice, video,
control)
PN6 + OC1 + OC2 + OC3 + OC4
4 data channels
(384 kbps data, voice, video,
control)
PN2 + OC4 + OC5 + OC6 + OC7
2 data channels
(voice, control)
PN1 + OC1 + OC2
1 data channels
(control)
PN1 + OC3
Voice
Conversation Uplink
Packet Data
Video
conference
Video
conference
with Data
Pilot, Broadcast
PN1 + OCP + OCB
Pilot, Broadcast
PN2 + OCP + OCB
Kanali ülekandekiiruse tagamine
Teenused 472
0 20 40 60 80 100 120 140 160-2
02468
10121416
Time [number of TTIs]
QPSK1/4
QPSK2/4
QPSK3/4
16QAM2/4
16QAM3/4
Inst
an
tan
eou
s EsN
o [
dB
]
Teenused 473
Terminalide (UE) multipleks
Teenused 474
Asjatundmine
Protocol test suite
Contribs to air interface base specs
Define regulatory requirements
Marketing and promotion
Certification
Network interface specs
Air interface base specs
Mobility extension
Management specs
Teenused 475
Traadita lairiba standardid
IEEE 802.15
Bluetooth
WAN
MAN
LAN
PAN
IEEE 802.11
WirelessLAN
HiperLAN/2
RLAN
IEEE 802.16
WirelessMAN
HiperMAN &
HiperAccess
UMTS, EDGE
(GSM)
ETSI
BRAN
IEEE 802 ETSI
WiFi*
WiMAX*
Teenused 476
WCDMA (3G) ja WiMAX
Teenused 477
Sagedusalad ( ... aga)
Teenused 478
Interferents (vastastikused häired)
Teenused 479
MAN ja WAN
WiMax WiMax EDGE CDMA2000/
1 x EV-DO
WCDMA/
UMTS
Standard 802.16-2004 802.16e
(2005) 2,5G (3G) 3G
Kasutus WMAN
Statsionaarne
WMAN
Mobiilne WWAN WWAN WWAN
Läbilaske-
võime
kuni 75
Mbit/s
(20 MHz riba)
kuni 30
Mbit/s
(10 MHz riba)
kuni 384
Kbit/s
kuni 2,4
Mbit/s
(tavaliselt 300 –
600 Kbit/s)
kuni 2 Mbit/s
(kuni 18 Mbit/s
kasutades
HSDPA)
Ulatus tavaliselt
6 - 10 km
tavaliselt
1,6 - 5 km
tavaliselt
1,6 - 8 km
tavaliselt
1,6 - 8 km
tavaliselt
1,6 - 5 km
Sagedus-
ala
allpool 11
GHz
2 – 6
GHz
900, 1800
MHz
450
MHz
1900, 2100,
2500 MHz
Teenused 480
Lõpulingid (12) http://www.umts-forum.org/
http://www.3gpp.org/
http://en.wikipedia.org/wiki/WCDMA
http://en.wikipedia.org/wiki/Universal_Mobile_Tele
communications_System
http://www.umts.de./
http://en.wikipedia.org/wiki/3G