文档内容
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LTE ................................................................................................................................ 3
1. ..................................................................................................................................... 3
2.LTE ..................................................................................................................... 3
3. VOIP............................................................................................................................................ 4
LTE ................................................................................................................................. 8
1.TDD ................................................................................................................................ 8
4.2-1: (DwPTS/GP/UpPTS ).................................................................... 10
2. OFDM....................................................................................................................................................................................................................................................................................................................................... 10
3. .................................................................................................................................................................................................................................................................................................................................................................. 11
4.HARQ........................................................................................................................................................................................................................................................................................................................................................................................................................... 14
5. ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 14
6.RS(Reference Signal)....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 18
7.TDD-LTE .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 18
8. ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 22
9.LTE PDSCH ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 24
10.TDD LTE FFFDDDDDD LLLTTTEEE ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 28
11. ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 30
3.4.4.2 SPS .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 36
333...444...444...222...111 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 37
333...444...444...222...222 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 37
LTE ..................................................................................................................................................................................................................................................................................................................................................................... 38
1. ............................................................................................................................................................................................................................................................................................................................................................................................. 38
2. ............................................................................................................................................................................................................................................................................................................................................. 42
3. .............................................................................................................................................................................................................................................. 43
4. ................................................................................................................................... 53
5.VoIP .......................................................................................................... 59
....................................................................................................................................... 64
1.LTE ........................................................................................................... 64
2. ................................................................................................................................... 65
3. ........................................................................................................................... 66
4 TDD FDD HARQ ......................................................................................... 67
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.................................................................................................................................... 68
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1.
CS : 2G/3G Circuit Switch CS
CS
IMS : IP IP Multi-media Subsystem IMS
IMS IMS PS Packet
Switch IMS IIPP
IMS LTE/EPS
IP : IP
IP 3GPP 3rd GGGeeennneeerrraaatttiiiooonnn PPPaaarrrtttnnneeerrrssshhhiiipppPPPrrrooojjjeeecccttt LTE
IP 2G/3G
IP / LLTTEE//EEPPSS LLLooonnnggg TTTeeerrrmmm
Evolution/Evolved PacketSystem[1] LLLTTTEEE///EEEPPPSSS CCCSSS
3G
IP LLLLLTTTTTEEEEE((((( LLLLLooooonnnnnggggg TTTTTeeeeerrrrrmmmmm EEEEEvvvvvooooollllluuuuutttttiiiiiooooonnnnn))))) ,
, VVVVVoooooIIIIIPPPPP((((( VVVVVoooooiiiiiccccceeeee ooooovvvvveeeeerrrrr IIIIInnnnnttttteeeeerrrrrnnnnneeeeettttt PPPPPrrrrroooootttttooooocccccooooolllll)))))
2.LTE
LTE IP
CCCSSS CS FFFaaallllllbbbaaaccckkk CCCSSS LTE
2G 3G CS
inter- RAT CS 2G/3G
E- UTRAN 2G/3G
SR- VCC IMS LTE/EPS
IMS VoIP E-
UTRAN GERAN UTRAN/cdma2000 1X 3GPP
IMS SR- VCC
IMS
VoLGA LTE CS
MSC UTRAN/GERAN/cdma2000 1X
E- UTRAN CS CS
VoLGA (VANC)
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3. VOIP
VOIP IP
IP IP
IP
1 IP
VoIP
G.711
6644KKbbppss 555...333KKKbbbpppsss 111666KKKbbbpppsss
IP
IP
64kbit/s.
VoIP IP
UDP
IP
VoIP IP VoIP
VoIP IP
IP IP
IP IP VoIP
1 -
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IP
8 6
10~30ms.
60 120 240m s
ITU-T G.711.
2 IP
15ms 60ms
4 120 88kkHHzz
4
IP
3
t
t
IP
IIIPPP
4 IP -
VoIP IP
111555mmmsss 60ms 4 60ms
5
480
8kHz IP
IP IP IP
ITU-T G.711 64kbit/s
ITU-T G.723.1 ITU-T G.729 AMR ITU-T G.723.1
5.3kbit/s 6.3kbit/s ITU-T G.729 8 kbit/s
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G.711
RTP/TRCP UDP
VoIP RTP RTP UDP
UDP RTP
TCP
RTP
RTP
1 H.323 RAS QQ..993311 H.245
RAS QQ..993311
H.245 2 SIP / CC//SS
LTE 333GGG LLLTTTEEE
OFDMA SC-FDMA 3G CDMA
LTE
eNB QoS
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LTE VoIP
LTE
LTE
LTE VoIP
5 VoIP LTE
LTE
LTE RNTI eNB UE
RNTI PD-CCH UE
RNTI eNB UE
C-RNTI
SPS-C-RNTI
LTE eNB PDCCH UUUEEE UE
LTE PPPDDDCCCCCCHHH
VoIP 222000 mmmsss eNB PPPDDDCCCCCCHHH
UE UE PPPDDDCCCCCCHHH
20 ms VVVoooIIIPPP 2
UUUEEE
3
HARQ
VoIP , , ,,,
VoIP , LTE
VoIP , ,
(PPPeeerrrsssiiisssttteeennntttSSSccchhheeeddduuullliiinnnggg) , VoIP VoIP
QoS( QQQuuuaaallliiitttyyy ooofff SSSeeerrrvvviiiccceee)
VoIP :
, ,,, , 97byte
, 35 49byte ,
SSSIIIDDD((( SSSiiillleeennnccceee DDDeeessscccrrriiippptttooorrr))) , 10 24byte
AMR((( AAAdddaaappptttiiivvveee MMMuuullltttiii RRRaaattteee))) , 12.2kbps ,
/ 20ms, 160ms , VoIP ,
, VoIP
,
LTE (1) LTE
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Jitter
Buffer
1.TDD
111000mmmsss 5ms 5 1ms
88 0.5ms 3 DwPTS GP UpPTS
111mmmsss OFDM
FDD 555mmmsss 111000mmmsss
5ms
10ms
0 5 DwPTS UpPTS
DwPTS DwPTS PSS
DwPTS PRB 36.211 36.213
DwPTS UpPTS DwPTS 3 12 OFDM UpPTS
1 2 OFDM GP 1 10 OFDM
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DwPTS PCFICH PDCCH PHICH PDSCH P-SCH
DwPTS
DwPTS
0 5 111
0 2 6 5s,
555
1 6
3 4 5 10 s
ssuubbffrraammee sssuuubbbfffrrraaammmeee GP
subframe sssuuubbbfffrrraaammmeee GGGPPP ?
36.211 Section 8
TA+TAoffset, TAoffset 624 Ts
,,
DDDDDwwwwwPPPPPTTTTTSSSSS(((((dddddooooowwwwwnnnnnllllliiiiinnnnnkkkkk pppppiiiiilllllooooottttt tttttiiiiimmmmmeeeee ssssslllllooooottttt))))),,,,,GGGGGPPPPP(((((ggggguuuuuaaaaarrrrrddddd
pppppeeeeerrrrriiiiioooooddddd))))),,,,,UUUUUpppppPPPPPTTTTTSSSSS(((((uuuuupppppllllliiiiinnnnnkkkkk pppppiiiiilllllooooottttt tttttiiiiimmmmmeeeee ssssslllllooooottttt))))) DwPTS
UUUpppPPPTTTSSS RACH SSSRRRSSS GP
1S
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UpPTS
GP DwPTS
GP GP
4.2-1: (DwPTS/GP/UpPTS )
UpPTS DwPTS UpPTS
DwPTS
0 6592 T s 7680 T s
1 19760 T s 20480 T s 2560 T
222111999222 T s
s
2 21952 T s 2192 T 2560 T 23040 T ss
s s
3 24144 T s 2255660000 TTT sss
4 26336 T s 777666888000 T s
555111222000 T
5 6592 T s 20480 T s 444333888444 T s s
6 19760 T s 2233004400 TTT sssss
4384 T 555111222000 T
s s
7 21952 T s
8 24144 T s
2. OOOFFFDDDMMM
(((OOOrrrttthhhooogggooonnnaaalllFFFFFrrrrreeeeeqqqqquuuuueeeeennnnncccccyyyyy DDDDDiiiiivvvvviiiiisssssiiiiiooooonnnnn MMMMuuuullllttttiiiipppplllleeeexxxxiiiinnnngggg))))
OFDM
IIICCCIII(((IIInnnttteeerrr--CCCCChhhhhaaaaannnnnnnnnneeeeelllll IIIIInnnnnttttteeeeerrrrrfffffeeeeerrrrreeeeennnnnccccceeeee)))))
OFDM CCCPPP OFDM
CP
OFDM
CP OFDM CP
OFDM CP OFDM
FFT FFT 1
OFDM 2 CP
ICI
OFDM PAPR PAPR(PeaktoAveragePowerRatio)
PAPR
PAPR
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3.
E-Node B
0
OFDM
Turbo
1 CRC
Turbo
1. 1.
2. 2.
Turbo 3. 3.
M CRC
Turbo OFDM P
LTE MMMAAACCC
FFFrrreeeqqquuueeennncccyyy
Division Duplex .FDD TTTTTiiiiimmmmmeeeee DDDDDiiiiivvvvviiiiisssssiiiiiooooonnnnn DDDDDuuuuupppppllllleeeeexxxxx .....TTTTTDDDDDDDDDD
LLTTEE
12 15KHz
24 7.5KHz 0.5ms
RRREEE RRReeesssooouuurrrccceee EEEllleeemmmeeennnttt
RE
CRC
TB CCCRRRCCC CRC CB
TB CRC CCCBBB CRC 24
CRC g x CRC
0 CRC
TB CB
Turbo PDSCH PBCH
PDCCH
0dkG0 =133(octal) 11 171( ) k d G = octal 22 165( ) k d G = octal
1/3
HARQ
RV
CB
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CB
PDCCH PBCH UE
CQI PDCCH PDCCH CCE , CCE
CCE
CCE
PDSCH
CB
RV
3GGP PPPBBBCCCHHH(((PPPhhhyyysssiiicccaaalll BBBrrroooaaadddcccaaassstttiiinnnggg CCChhhaaannnnnneeelll))) PPPPDDDDCCCCCCCCHHHH((((PPPPhhhhyyyyssssiiiiccccaaaallll
DownlinkControl Channel) PDSCH PPPhhhyyysssiiicccaaalll DDDooowwwnnnllliiinnnkkk SSShhhaaarrreeeddd CCChhhaaannnnnneeelll PPPHHHIIICCCHHH(((PPPhhhyyysssiiicccaaalll
HARQIndicator Channel ) PPPPPCCCCCFFFFFIIIIICCCCCHHHHH(((((PPPPPhhhhhyyyyysssssiiiiicccccaaaaalllll CCCCCooooonnnnntttttrrrrrooooolllll FFFFFooooorrrrrmmmmmaaaaattttt IIIIInnnnndddddiiiiicccccaaaaatttttooooorrrrr CCCCChhhhhaaaaannnnnnnnnneeeeelllll)))))
,PHICH PCFICH
PPPDDDSSSCCCHHH PDCCH PPPBBBCCCHHH
3.2.1 PBCH
PBCH UUUEEE
LLLTTTEEE 333GGGPPPPPP PPBBCCHH MMMIIIBBB the Master
InformationBlock 222444 111666 CRC
PPPBBBCCCHHH
PBCH
(((222444+++111666)))///111999222000===000...000222000444
PBCH
PPPBBBCCCHHH VVViiittteeerrrbbbiii
mmmaaassskkk CRC
PPBBCCHH
4
PBCH TTI
PBCH
CB PBCH
PBCH
1 PBCH
2 PBCH
3 QPSK
4 CB0
5
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6
7 CRC
CB1 CB2 CB3 4 7 5
8 PBCH
PBCH
PBCH TTI PBCH
TTI PBCH
PBCH
PBCH TTI
TTI PBCH
3.2.2 PDCCH
PDCCH DCI
Downlink Control Information DDDCCCIII
DCI
format 0, 1A,3 31 fffooorrrmmmaaattt 000 1A DDDCCCIII FFFLLLAAAGGG
format3 cccooommmmmmooonnn iiidddeeennntttiiitttyyy,,, rrraaattthhheeerrr ttthhhaaannn UUUEEE-ssspppeeeccciiifffiiiccc iiidddeeennntttiiitttyyy ;format 1
42 ; format 1B 3333 ; format 2 54 ;;; fffooorrrmmmaaattt 222AAA 51
222000MMMHHHzzz 111~~~222
DDDCCCIII,,,
PPPDDDCCCCCCHHH
DCI n PPPDDDCCCCCCHHH CCCCCCEEE f(n)
DCI n
DDDCCCIII fffooorrrmmmaaattt 000 UE RNTI
CRC CCCRRRCCC RRRNNNTTTIII CRC
CRC CRC DCI
UUUEEE eNodeB UE
PDCCHs PDCCHs UE
PPDDCCCCHH CRC
DCI eNodeB PDCCH
UE DCI DCI
RNTI DCI
specific
searchspace (common search space)
CRC DCI
DCI
RNTI DCI unpack
DCI
2.3 PDSCH
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PDSCH PBCH
(SIB, System Information Block, )
PDSCH Transport Block ( TB ) TB MAC
PDU Protocol Data Unit TTI ,TB MAC
Turbo TB Code Block ( CB )
40 6144 Turbo
CRC
4.HARQ
Chase Combination, CC HARQ IIInnncccrrreeemmmeeennntttaaalll RRReeeddduuunnndddancy,
IR HARQ CC HARQ
IIIRRR HHHAAARRRQQQ
HARQ UE NAK eeeNNNooodddeee BBB
TTI
Turbo CCCRRRCCC
UE TTTTTTIII
CC HARQ 0 IIIRRR HHHAAARRRQQQ
0,1, , rmax ( max r ) CCCCCC
dddaaatttaaallllll IR
(datal2 datal3)
5.
LTE 3G
RLC MAC
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RLC
MAC
LTE
MAC RLC
,MAC ,MMAACC :
BBBCCCCCCHHH:::
PCCH:
CCCH: RRC UUEE
MCCH: MMMTTTCCCHHH , MBMS
DCCH:RRC UE
DTCH: .
MAC
CRC
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MCS
:
BCH: MCS
PCH: DRX(UE ))
MCH: , SSFFNN ( CCCPPP )
RACH: PPPAAAGGGIIINNNGGG MS /
DL-SSSCCCHHH::: DDDDDooooowwwwwnnnnnllllliiiiinnnnnkkkkk SSSSShhhhhaaaaarrrrreeeeeddddd CCCCChhhhhaaaaannnnnnnnnneeeeelllll DL-SCH HARQ,AMC,
DTX MBMS(FFS)
UL-SCH: HHHAAARRRQQQ,,,AAAMMMCCC,,, ( ),
PCFICH: OFDM PDCCH. CFI
CFI CFI = 1,2,3,4 4 PCFICH OFDM
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PCI Physical Cell Identity
LTE PCFICH 2bit, CFI Control Format
Indicatior PDCCH
PHICH: HARQ HARQ , NodB UE
PUSCH ACK/NAK
PDCCH: .PDCCH
ACK/NACK
(DCI) n n<= 4
OFDM n PCFICH CFI
PDCCH DCI Downlink Control Information UE
PPPDDDCCCCCCHHH UUUEEE
PDCCH DCI UUUEEE PDSCH
UE
PBCH: MIB UUUEEE
PMCH PMCH
PDSCH
UE PCFICH PPPCCCFFFIIICCCHHH PDCCH
UE PPPDDDCCCCCCHHH PPPDDDSSSCCCHHH
PRACH
UE RACH LTE FDD
FFFDDDDDD PPPRRRAAACCCHHH 6 RB
PPPRRRAAACCCHHH 333666...222111111,,,SSSeeeccctttiiiooonnn 555...777...111 TTTDDDDDD
PRACH
PUCCH PPPUUUCCCCCCHHH
PUSCH
PBCH/PSS/SSS/PCFICH/PHICH/PDCCH
CCCH DCCH DL_SCH PDSCH
RNTI PDSCH
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6.RS(Reference Signal)
DL RS
CRS DRS DRS BF CRS BF
CRS Cell-specific RB CRS
CQI RB DRS UE-specific RS DRS
PDSCH RB RB CQI
DRS LTE-A
RS DM-RS CSI-RS
UL RS
DM Demodulation RS SSSooouuunnndddiiinnnggg RRRSSS
PUCCH PUSCH DM RS
SSSRRRSSS
7.TDD-LTE
LTE EEEPPPCCC MME/S-GW
E-UTRAN
EEEPPPSSS===EEEPPPCCC+++EE--UUTTRRAANN
LLTTEE
LLLTTTEEE EEEPPPCCC
LTE+EPC EEEPPPSSS
(Evolve-UTRAN E-UTRAN) (Core
Network CN) (((UUUssseeerrr EEEqqquuuiiipppmmmeeennnttt UE) E-UTRAN
CN
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MME / S-GW MMMMMMEEE /// SSS---GGGWWW
EEE---UUUTTTRRRAAANNN
eeeNNNBBB eNB
eNB
MME:
LTE B evolved NodeB UE E-UTRA
LTE
( 2) MAC RLC(Radio Link Control) PDCP PDCPPacket
data converge protocol
RRC
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eNB
Inter Cell RRM
RB Control
Connection Mobility Cont.
Radio Admission Control
eNB Measurement MME
Configuration & Provision
NAS Security
Dynamic Resource
Allocation (Scheduler)
Idle State Mobility
RRC HHaannddlliinngg
PDCP
SSAAEE BBeeaarreerr CCoonnttrrooll
RLC
SSeerrvviinngg GGaatteewwaayy
MAC
S1
MMoobbiilliittyy AAnncchhoorriinngg
PHY iiinnnttteeerrrnnneeettt
E-UTRAN EEEPPPCCC
eNB
eNB IP
1
/ /
222 IP
3 UE MME
4 S-GW
555
6
7
MME
1 MME
eNB
2
3
4 SAE
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5
1
2 UE
E-UTRAN E-UTRAN
S1 X2 E-UTRAN UTRAN
LTE
Radio
Control Plane UUUssseeerrr PPPlllaaannneee
Network
Layer Application
Protocol
Transport
Transport Network TTTrrraaannnssspppooorrrttt NNNeeetttwwwooorrrkkk
Network User Plane UUUssseeerrr PPllaannee
Layer
SSSiiigggnnnaaalllllliiinnnggg Data
BBBeeeaaarrreeerrr(((sss))) Bearer(s)
PPPhhhyyysssiiicccaaalll LLLaaayyyeeerrr
OSI 777 OSI 7
7
6
5
4 segment
TCP UDP TCP UDP IP
TCP IP
3 packed
IP
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2 ( frame)
IEEE802 LLC Logical Link Control
MAC Media Access Control
1 bit
7 6 5 4 4 3
2 1
8.
CFI
RE OFDM
222:::333
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2:3
(0) (0) (0) (0)
d (i) d (i) = x (i) x (i)
0 0
(1) (1) (1)
d (2i) = x (i) x (i)
(1)
d (i) 1
(1) (2) (2)
1 d (2i+1) = x (i) x (i)
2
v u
1 11 1 1 11
v u
21 21
1
v 1 uuu
31 333111
22 2
u
v 41
41 111
v u
12 12
2
3 333
u
v 2 22
2222
2
vvv u
3333322222 32
222
u
v 42
42 4 4
lllaaayyyeeerrr mmmaaappppppiiinnnggg precoding LTE MIMO
cccooodddeeewwwooorrrddd layer
MIMO
* )
1 1 2 3 4 1 2
4 3 4 3
codeword 2
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“antenna port defined by the presence of an
antenna port specific reference signal” LTE 4 6
(p={0,1,2,3,4,5})
p={0,1,2,3} cell-specific 4
p=4 MBSFN MBSFN MBSFN
Multicast/Broadcast over Single Frequency Network
p=5 UE-specific beamforming
9.LTE PDSCH
LTE
111...222
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PRB 0.5ms 12 777 OFDM
CCCPPP 7 OFDM
CP 6 OFDM
PRB
RE RE RE
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LTE
12 15KHz
24 7.5KHz 0.5ms
RE Resource Element
RE
RE 0.5ms
0.5ms 7/8 OFDM
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PRB 12 15K
180K 0.5 ms
VRB PRB
VRB PRB VRB PRB
VRB PRB
VRB VRB
PDCCH PDSCH VRB PRB
PDSCH 0 1 2 PDCCH
UE DDCCII Downlink Control
Information PDCCH DCI 11 2 2A 2B
0 1
0 0 1 1 10 PPRRBB
0 PDCCH
DCI lA 1B 1C 1D PDCCH 2 0
1 PDCCH 2 PPPDDDCCCCCCHHH
(36.213 Section 7.1.6, 36.212 Section 5.3)
0 UE bbbiiitttmmmaaappp
RBG 1 UE 00
RBG VRB VVVRRRBBB RRBBGG P
RB
System RBG
Bandwidth Size
(((PPP)))
11
11– 26 2
27– 666333 3
666444––– 111100 4
RRRBBBGGG bit
RBG P RRRBBB RBG
1 0 P
P RBG m
m P RBG 0=1
RBG RB 1 Bit 0 MSB
RBG RB RB RBG
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LSB RBG RB Bit 1
LSB RBG RB
0 1 0 RBG
1 RB
1
RBG RB
2
PDCCH DCI 1A 1B 1D 1 Bit
VRB VRB 0 1 DCI 1C
PDCCH VRB
10.TDD LTE FDD LTE
FDD
FDD
FDD
TDD TDD ,
,
TDD FFFDDDDDD TTTDDD--LLLTTTEEE
1
LLTTEE TTDDDD “1:1” 1
111
2
TD-LTE DwPTS UpPTS
LTE FDD sounding TDD sounding
UpPTS DwPTS PCFICH PDCCH PHICH
PDSCH P-SCH DwPTS
DwPTS
3 /
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FDD TDD 1:1
TD-LTE multi-ACK/NAK ACK/NAK
bundling
4
TDD TDD FDD
LTE 5ms PSS
SSS LTE TDD FDD /
3 TDD PSS DwPTS SSS 5ms
FDD 5ms
TDD FDD
5 HHAARRQQ
LLLTTTEEE FFFDDDDDD HHHAAARRRQQQ RRRTTTTTT RRRooouuunnnddd TTTrrriiippp TTTiiimmmeee 8ms ACK/NACK
4 TD--LLLTTTEEE HHHAAARRRQQQ LTE FDD
LLLTTTEEE FFFDDDDDD TTTDDDDDD UE ACK/NACK
HHHAAARRRQQQ RTT
4 LTE FDD UE 3ms
ACK/NACK UE 333mmmsss HARQ
8ms LLLTTTEEE TTTDDDDDD UE 3ms
ACK/NACK 3ms
ACK/NACK ACK/NACK UE 3ms HARQ
11ms UE 2 DL
ACK/NACK HARQ 10ms LTE TDD
HARQ ACK/NACK
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FDD LLLTTTEEE TTTDDDDDD VVVoooIIIPPP
HARQRTT /
/
VoIP
5 MHz LLLTTTEEE TTTDDDDDD VVooIIPP
FDD 55%% VoIP
VoIP 1 333
11.
1. Adaptive Fairness Control for a Proportional Fair LTE
Scheduler
2. Sensitivity Analysis of the Optimal ParameterSettings of an
LTE Packet Scheduler
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3. Fairness Improvement of Maximum C/I Schedulerby Dumb
Antennas in Slow Fading Channel
4. Scheduling Techniques Evaluation in LTE systemswith
Mixed Data Traffic
5. AAAnnn iiimmmppprrrooovvveeeddd dddooowwwnnnllliiinnnkkk sssccchhheeeddduuullliiinnnggg aaalllgggooorrriiittthhhmmm fffooorrr VVVOOOIIIPPP
traffic in IEEE 802.16
6.DDDDDDyyyyyynnnnnnaaaaaammmmmmiiiiiicccccc PPPPPPaaaaaacccccckkkkkkeeeeeetttttt SSSSSScccccchhhhhheeeeeedddddduuuuuulllllliiiiiinnnnnngggggg ffffffoooooorrrrrr TTTTTTrrrrrraaaaaaffffffffffffiiiiiicccccc MMMMMMiiiiiixxxxxxeeeeeessssss ooooooffffffBBBBBBeeeeeesssssstttttt EEEEEEffffffffffffoooooorrrrrrtttttt
and VoIP Users in E-UUUTTTRRRAAANNN DDDooowwwnnnllliiinnnkkk
7. Downlink PPPPPaaaaaccccckkkkkeeeeettttt SSSSSccccchhhhheeeeeddddduuuuullllliiiiinnnnnggggg fffffooooorrrrr RRRRReeeeeaaaaalllll-TTTiiimmmeee TTTrrraaaffffffiiiccc iiinnn
Multi-UUUssseeerrr OOOFFFDDDMMMAAA SSSyyysssttteeemmm
8. An EEEEEEEffffffffffffffiiiiiiiccccccciiiiiiieeeeeeennnnnnnttttttt DDDDDDDooooooowwwwwwwnnnnnnnllllllliiiiiiinnnnnnnkkkkkkk PPPPPPPaaaaaaaccccccckkkkkkkeeeeeeettttttt SSSSSSSccccccchhhhhhheeeeeeeddddddduuuuuuullllllliiiiiiinnnnnnnggggggg AAAAAAAlllllllgggggggooooooorrrrrrriiiiiiittttttthhhhhhhmmmmmmm in
LTE-AAAAAAAdddddddvvvvvvvaaaaaaannnnnnnccccccceeeeeeeddddddd SSSSSSSyyyyyyysssssssttttttteeeeeeemmmmmmmsssssss wwwwwwwiiiiiiittttttthhhhhhh CCCCCCCaaaaaaarrrrrrrrrrrrrriiiiiiieeeeeeerrrrrrr AAAAAAAggggggggggggggrrrrrrreeeeeeegggggggaaaaaaatttttttiiiiiiiooooooonnnnnnn
999... VVViiirrrtttuuuaaallllllyyy DDDDDeeeeedddddiiiiicccccaaaaattttteeeeeddddd RRRRReeeeesssssooooouuuuurrrrrccccceeeee AAAAAllllllllllooooocccccaaaaatttttiiiiiooooonnnnn fffffooooorrrrr VVVVVoooooIIIIIPPPPPTTTTTrrrrraaaaaffffffffffiiiiiccccc iiiiinnnnn
ttttthhhhheeeee DDDDDooooowwwwwnnnnnllllliiiiinnnnnkkkkk MMMMMooooobbbbbiiiiillllleeeee WWWWWiiiiiMMMMMAAAAAXXXXX SSSSSyyyyysssssttttteeeeemmmmmWWWWWiiiiittttthhhhh HHHHHyyyyybbbbbrrrrriiiiiddddd AAAAARRRRRQQQQQ
10. Fair RRReeesssooouuurrrccceee AAAllllllooocccaaatttiiiooonnn fffooorrr IIInnnbbbaaannnddd RRReeelllaaayyyiiinnnggg iiinnnLLLTTTEEE-
Advanced
11. Performance of WiMAX Packet Schedulers forMulti-
Class Traffic
12. Packet Scheduling and Fairness forMultiuser MIMO
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systems
13. Performance Analysis of Two Packet Scheduling
Algorithms in Downlink 3GPP LTE System
14. Resource Allocation and Scheduling InMIMO-OFDMA
with Time-VVVaaarrryyyiiinnnggg CCChhhaaannnnnneeelll aaannndddBBBuuurrrssstttyyy AAArrrrrriiivvvaaalllsss
15. A PPPaaaccckkkeeettt SSSccchhheeeddduuullliiinnnggg SSSccchhheeemmmeee tttooo SSSuuuppppppooorrrtttRRReeeaaalll-TTiimmee TTrraaffffiicc
in OFDMA Systems
16. Packet sssccchhheeeddduuullliiinnnggg fffooorrr rrreeeaaalll---tttttiiiiimmmmmeeeee tttttrrrrraaaaaffffffffffiiiiiccccc fffffooooorrrrr
mmmuuullltttiiiuuussseeerrrdddooowwwnnnllliiinnnkkk MMMIIIMMMOOO---OOOOOFFFFFDDDDDMMMMMAAAAA sssssyyyyysssssttttteeeeemmmmmsssss
17. PPPPPPPeeeeeeerrrrrrrfffffffooooooorrrrrrrmmmmmmmaaaaaaannnnnnnccccccceeeeeee AAAAAAAnnnnnnnaaaaaaalllllllyyyyyyysssssssiiiiiiisssssss ooooooofffffff PPPPPPPeeeeeeerrrrrrrsssssssiiiiiiisssssssttttttteeeeeeennnnnnnttttttt SSSSSSSccccccchhhhhhheeeeeeeddddddduuuuuuullllllliiiiiiinnnnnnnggggggg fffffffooooooorrrrrrr VVVVVVVoooooooIIIIIIIPPPPPPP iiiiiiinnnnnnn
WWWiiiMMMAAAXXX NNNeeetttwwwooorrrkkksss
18. VVVVVVVoooooooIIIIIIIPPPPPPP TTTTTTTrrrrrrraaaaaaaffffffffffffffiiiiiiiccccccc SSSSSSSccccccchhhhhhheeeeeeeddddddduuuuuuullllllliiiiiiinnnnnnnggggggg iiiiiiinnnnnnn WWWWWWWiiiiiiiMMMMMMMAAAAAAAXXXXXXX NNNNNNNeeeeeeetttttttwwwwwwwooooooorrrrrrrkkkkkkksssssss
19. MMMMMMMAAAAAAACCCCCCC SSSSSSSccccccchhhhhhheeeeeeeddddddduuuuuuullllllliiiiiiinnnnnnnggggggg SSSSSSSccccccchhhhhhheeeeeeemmmmmmmeeeeeee fffffffooooooorrrrrrr VVVVVVVoooooooIIIIIIIPPPPPPP TTTTTTTrrrrrrraaaaaaaffffffffffffffiiiiiiiccccccc SSSSSSSeeeeeeerrrrrrrvvvvvvviiiiiiiccccccceeeeeee in 3G
LTE
20. SSSccchhheeeddduuullliiinnnggg aaannnddd LLLiiinnnkkk AAAdddaaappptttaaatttiiiooonnnsss for VoIP in TDD-LTE
Uplink
21. Efficient Semi-Persistent Scheduling for VoIP on EUTRA
Downlink
22. Semi-Persistent Scheduling for VoIP Service in the LTE-
/ / offer- https://51jobs.taobao.com/ galerjim
Advanced Relaying Networks
23. Group Scheduling for Improving VoIP Capacity in IEEE
802.16e Networks
24. Principle and Performance of Semi-Persistent Scheduling
for VoIP in LTE System
25.Utility-Based Uplink SSSccchhheeeddduuullliiinnnggg AAAlllgggooorrriiittthhhmmm fffooorrr EEEnnnhhhaaannnccciiinnnggg
TTThhhrrrooouuuggghhhpppuuuttt aaannnddd FFFaaaiiirrrnnneeessssss iiinnn RRReeelllaaayyyeeeddd LLLLLTTTTTEEEEE NNNNNeeeeetttttwwwwwooooorrrrrkkkkksssss
26. Semi-pppppppeeeeeeerrrrrrrsssssssiiiiiiisssssssttttttteeeeeeennnnnnnttttttt sssssssccccccchhhhhhheeeeeeeddddddduuuuuuullllllliiiiiiinnnnnnnggggggg fffffffooooooorrrrrrr VVVVVVVoooooooIIIIIIIPPPPPPP ssssssseeeeeeerrrrrrrvvvvvvviiiiiiiccccccceeeeeee iiiiiiinnnnnnn ttttttthhhhhhheeeeeee LLLLLLLTTTTTTTEEEEEEE-
AAAdddvvvaaannnccceeeddd rrreeelllaaayyyiiinnnggg nnneeetttwwwooorrrkkksss
(AMC) ((HHAARRQQ))
eNB
TD-LTE
LTE eNB MAC
(MCS MMMoooddduuulllaaatttiiiooonnn aaannnddd CCCooodddiiinnnggg SSSccchhheeemmmeee))) MIMO
UL SCH DL SCH
(PRB) (MCS)
LTE HARQ AMC
2 5 (
)
3GPP Release5
RNC 51
( QoS ) RNC
LTE
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(UE)
1) ( PPPRRRBBB )
2) QoS ((( GB MMMBBB B BR )
3)Buffer SSStttaaatttuuusss((( )))
4) ((( CCCQQQIII CPI )
555)))UUUEEEnnn P ( HHHOOOMMM MMMIIIMMMOOO )
6)HARQ (( HHHAAARRRQQQ pppeeerrrsssiiisssttteeennnttt sssccchhheeeddduuullliiinnnggg )
1 ( ) UE
2) MCS MIMO
3) HARQ HARQ HARQ
HARQ (IR) HARQ HARQ
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QoS
UE
HARQ "
LTE
( DL SCH UL SCH)
TTBB((TTrraannssppoorrtt BBlloocckk)) MMMIIIMMMOOO
TTl TB TTTBBB
RB RRBB
Semi-Persistent Scheduling
VoIP Voice Over IP
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LTE eNB PDCCH
UE UE
LTE
PDCCH
VoIP 20ms eNB PDCCH
UE UE PDCCH
20ms VoIP
2 UE
20ms 20ms
2
HARQ
3.4.4.2 SPS
WWWIIIMMMAAAXXX UGS
VVVoooIIIPPP
PDCCCCCCHHH LLLTTTEEE PPPDDDCCCCCCHHH
RRC SPS 36.331
SPS C-RNTI
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semiPersistSchedIntervalUL
implicitReleaseAfter;
semiPersistSchedIntervalDL HARQ
numberOfConfSPS-Processes
RRC
3.4.4.2.1
SPS UUUEEE
((1100 ** SSFFNN ++ ssuubbffrraammee)) == [[((1100 ** SSFFNN + subframe )) ++ NN **
ssstttaaarrrttt tttiiimmmeee ssstttaaarrrttt tttiiimmmeee
semiPersistSchedIntervalDL]]] mmmoooddduuulllooo 111000222444000,,, NNN >>> 000
SFN sssuuubbbfffrrraaammmeee SSSFFFNNN
start time start time
UUUEEE
333...444...444...222...222
SPS Grant UE
(((111000 *** SSSFFFNNN +++ sssuuubbbfffrrraaammmeee))) === [[[(((111000 *** SSSFFFNNN + subframe ) + N *
start time start time
semiPersistSchedIntervalUL+ Subframe_Offset * (N modulo 2)] modulo 10240, N>0
SFN subframe SFN
start time start time
UE
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UE implicitReleaseAfter SPS MAC PDU
MAC SDU
SPS
IP VoIP
1.
SINR BER BLER FER
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Codec
LLLTTTEEE
RRR888
Scheduler
MIMO MIMO
layer_mapping.m
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Resource mapping and de-mapping
Ifft
fft
Channel
Rx-detector
MMSE MRC 1
MRC >1 MMSE
MMSE
HARQ
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2.
/
L-S 5.1 MCS
AWGN LEP
SINR
L-S SINR SINR
SINR BER BLER
SINR
SINR
L2S
SSIINNRR SSIINNRR
SINR
5.1
SINR SINR L-S
SINR SINR AWGN
SINR B3G/4G
SINR SINR SINR
OFDM
(EESM) (MI-ESM) EESM ,
, MI- ESM
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,
ESM ,
SINR SINR , BLER
SINR ESM OFDM SINR k
SINR eff SINR AWGN
BLER 3G LTE EESM
3.
22
Monte Carlo
RRRRRRMMM
,
RRRRRRMMM
3GPP TTTRRR 222555...888111444 2255..889922 Matlab
LTE WWWrrraaappp-around
AAAMMMCCC HHAARRQQ
111
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QQQPPPSSSKKK 16QAM 64QAM 1/2 3/5 2/3 3/4 4/5
Turbo 3 Chase
1
SINR
Buffer PPPFFF VoIP M-LWDF
HARQ HARQ CC
MCS MU-MIMO
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3 111 111 LLLTTTE
TTrraaffffiicc iinnffoorrmmaattiioonn
1 TTrraannssppoorrtt bblloocckk 2 CCooddee bblloocckk sseeggmmeennttaattiioonn 3 4
Channel coding Rate matching
CCRRCC aattttaacchhmmeenntt CCooddee bblloocckk CCRRCC aattttaacchhmmeenntt
Data and
Control
Uplink control 5 multiplexing
information
Channel coding
11 10 9
SC-FDMA signal Resource element Transform 8 Modulation 7 Bit-level 6
Frame gen
gen mapper precoder mapper scrambling
Scrambling
Synchronization Reference signal sequence gen
seq. generation gen
1.24 CRC CRC24A
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2.CRC 24 CRC CRC24B
CRC >6144
3. Turbo 1/3 QPP(Quadrature Permutation Polynomial)
4. Turbo HARQ
5. 1/3
.6.
OFDM
7. 31 Golden , Cell_id,
nRNTI
8. QPSK, 16QAM 64QAM
9. DFT
10.
11. IFFT
12. DDDDwwww PPPPTTTTSSSS,,,, UUUUppppPPPPTTTTSSSS
WWWrrraaapppaaarrrooouuunnnddd
BBBSSS UUUEEE
(
)))
3GPP LTE
( BS UUUEEE ))) ICIC
BS
(((gggrrraaannnttt )
SINR EESM SINR
BLER ACK
NAK grant Ll L2 UE
ACK NAK UE BS UE
BS
UE
UE Ll L2 HARQ
L1 L2 BS (
)
LIE
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BS BS UE
3 1 2 LTE
a 0 (0),a 1 (0),...,a A (0) 1 b 0 (0),b 1 (0),...,b B (0) 1 c r (0 0 ),c r ( 1 0),...,c r (0 (K ) r 1) d r ( 0 0,i),d r ( 1 0,i),...,d r ( ( 0 D ,i r ) 1) e r ( o 0),e r ( 1 0),...,e r (0 (E ) r 1)
Block Segment &
PDSCH Channel
CRC attachment Segment CRC Rate matching
data coding
1 2 3 attachment 4 5
a 0 (q),a 1 (q),...,a A (q) 1 b 0 (q),b 1 (q),...,b B (q) 1 c r ( 0 q),c r ( 1 q),...,c r ( ( q K ) r 1) d r ( 0 q,i),d r ( 1 q,i),...,d r ( ( q D ,i r ) 1) e r ( o q),e r ( 1 q),...,e r (q (E ) r 1)
Block Segment &
PDSCH Channel
CRC attachment Segment CRC Rate matching
data coding
attachment
Gold scrambling
sequence sequence PPMMII && CCQQII rreeppoorrtt
ffrroomm UUpplliinnkk
Codewords llaayyeerrss CP attachment
b(0)(0),...,b(0)(M tot 1) Sub-carrier mapper
Multiplexing Modulation 8 Antenna ports
and scrambling mapper RReessoouurrccee eelleemmeenntt OFDM
6 b(q)(0),...,b(q)(M tot 7 1) d(0)(0),...,d(0)(M symb 1) mm LL aa aa pp yy pp ee ee rr rr PPrreeccooddiinngg map 9 per 10 modulation 11
Multiplexing Modulation
and scrambling mapper RReessoouurrccee eelleemmeenntt OFDM
d(q)(((((((((000000000))))))))),,,,,,,,,...........................,,,,,,,,,d(q)(((((((((Msssssssyyyyyyymmmmmmmbbbbbbb 111111111))))))))) mmaappppeerr modulation
x(((((((((((i))))))))))) x(0)(((((((((((i))))))))))) ................................. x((((((((((((((((((((( 111111111111111111111)))))))))))))))))))))(((((((((((i)))))))))))TTT y(i) ... y(p)(i) ...T
Gold scrambling i 0000000,,,,,,,1111111,,,,,,,.....................,,,,,,,Mlllllaaaaayyyyyeeeeerrrrr 1111111 i 000000,,,,,,111111,,,,,,..................,,,,,,Map 111111 Reference Reference signal
ssssssyyyyyymmmmmmbbbbbb ssssyyyymmmmbbbb
sequence sequence signal generation
codeword MIMO
111 222 cccooodddeeewwwooorrrdddsss LTE
TTTTTTIII 2 TTTBBB 2 codewords
llaayyeerr “ ””” rrraaannnkkk
44 2 layer/rank = 2 4 4
lllaaayyyeeerrr///rrraaannnkkk===444 cccooodddeeewwwooorrrddd lllaaayyyeeerrr layer
mapper cccooodddeeewwwooorrrddd lllaaayyyeeerrr layer
lllaaayyyeeerrr mmmaaappppppeeerrr ppprrreeecccooodddiiinnnggg antenna port
1.
2.24 CRC CRC24A
3.CRC 24 CRC CRC24B
CRC >6144
TB CRC CRC CB
CRC TB CB
4. Turbo 1/3 QPP(Quadrature Permutation Polynomial)
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5. Turbo HARQ
6. 31 Golden , Cell_id,
nRNTI
QPSK, 16QAM 64QAM
8.
a. 1 2 TB M M
M Precoding M
( DL SCH UL SCH)
TTTBBB(((TTTrrraaannnssspppooorrrttt BBBllloooccckkk))) MIMO
TTl TB
b. LLLTTTEEE MMMIIIMMMOOO
MMMIIIMMMOOO
SSSFFFBBBCCC,,, CCCooodddeeebbbooooookkk ppprrreeecccooodddiiinnnggg wwwiiittthhh CCCDDDDDD ooorrr wwwiiittthhhooouuuttt CCCDDDDDD
9.
10. IFFT
11. DDDwww PPPTTTSSS,,, UUUpppPPPTTTSSS
PDCCHH
DDDCCCIII11
CRC An 0
OFDM
DCI2
CCRRCC An 1
OFDM
PDCCH
DCIn
PDCCH AnP
CRC OFDM
PDSCH
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E-Node B
0
OFDM
Turbo
1 CRC
Turbo
1. 1.
2. 2.
Turbo 3. 3.
M CRC
Turbo OFDM P
foreachsimulatedTTI do
moveUEs
ifUEoutsideROI
then
reallocate UE randomly iinn RRROOOIII
for eacheNodeB do
rrrrreeeeeccccceeeeeiiiiivvvvveeeeeUUUUUEEEEEfffffeeeeeeeeeedddddbbbbbaaaaaccccckkkkkaaaaafffffttttteeeeerrrrraaaaagggggiiiiivvvvveeeeennnnnfffffeeeeeeeeeedddddbbbbbaaaaaccccckkkkkdddddeeeeelllllaaaaayyyyy
scheduleusers 111 22 3
fffooorrr eeeaaaccchhhUUUEEE dddooo
1-ccchhhaaannnnnneeelllssstttaaattteee llliiinnnkkkqqquuuaaallliiitttyyymmmooodddeeelll SINR MMMCCCSSS CQI
222---SSSIIINNNRRR MCS llllliiiiinnnnnkkkkkpppppeeeeerrrrrfffffooooorrrrrmmmmmeeeeennnnnccccceeeee mmmmmooooodddddeeeeelllll BBBLLLEEERRR ACK/NACK,throughput
3-ssseeennndddUUUEEEfffeeeeeedddbbbaaaccckkk,,,CCCQQQIII+++AAACCCKKK///NNNAAACCCKKK
33GGPPPP LTE ( BS UE )
ICIC
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BS CQI
(grant ) ACK NNNCCCKKK HHHAAARRRQQQ
( )
UE SINR
EESM SINR
BLER ACK NAK UE
CQI UE
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TD-LTE TD-LTE
eNodeB
eeNNooddeeBB
TDD LTE
TD-LTE SINR
CCCQQQIII SINR SINR
Resource Block, RB
SINR 333 LTE 12
SINR / ( ) i C I N SINR P P P i
CP IP NP
SINR 12 SINR EESM
RB SINR
EESM MCS
MI-ESM
effective-sinr sub-carriers per RB????
Round Robin C/I Max C/I
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Proportional Fairness Scheduling ,PFS
Buffer PF VoIP M-LWDF
Modified Largest Weighted Delay First M-LWDF
AMC TD-LTE
AMC AMC
MCS
64QAM 4/5Turbo
QQQQPPPPSSSSKKKK 1111////3333TTTTuuuurrrrbbbboooo MCS
CQI eNodeB
CQI MCS
MMMoooddduuulllaaatttiiiooonnn aaannnddd
CodingScheme, MCS TTTrrraaannnsssmmmiiissssssiiiooonnn TTTiiimmmeee
Interval TTI AMC CCCChhhhaaaannnnnnnneeeellll QQQQuuuuaaaalllliiiittttyyyy IIIInnnnddddiiiiccccaaaattttoooorrrr,,,, CCCCQQQQIIII
CQI HHHAAARRRQQQ 1
0.1 MCS CCCQQQIII iiinnndddeeexxx CCCQQQIII MCS
AMC CCCQQQIII eeNNooddee BB
CQI (((TTTrrraaannnssspppooorrrtttBBBllloooccckkk SSSiiizzzeee,,, TTTBBBSSS))) MMMCCCSSS
UE, UE eeeNNNooodddeee BBB
4.
B3G
B3G
IP QoS
QoS
QoS
QoS
FIFO RLC
MAC
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3
3 3
VoIP FTP
Full Queue
VoIP
FTP
VoIP HTTP
E-mail
3 3 33
QoS
QQQoooSSS
4
0 FTP
Full Buffer
(1)
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(2) IP
(3)
(4)
VVVoooIIIPPP
VoIP
2
b
a b
a b
RRRTTTPPP AAAMMMRRR 111222...222 12.2 kbit/s AMR 3GPP
AMR 4.75-12.22 20ms
95-244 AAAMMMRRR 8
VoIP
AMR 12.2kbps
T R=1/T T
20ms 20 ms 320 bit IP
160 ms 8 160
bit IP 8.5 kbit/s VoIP
200 ms
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(1) 20 ms
(2) (iT i
)
VoIP
ms
ms
(3)
VoIP
QoS
(4)
QoS
50 ms 98%
222%%%
VoIP
HTTP
TCP HTTP/1.0
session packet call
packet
on/off Web
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packet Call
2.16
2.16
mmmaaaxxxiiimmmuuummm
transmit unit MTU
2.17 HHHTTTMMMLLL mmmaaaiiinnn
object , cccccooooonnnnnssssstttttiiiiitttttuuuuueeeeennnnnttttt ooooobbbbbjjjjjeeeeecccccttttt
embedded object
2.17
HTTP
/ / offer- https://51jobs.taobao.com/ galerjim
:
:
:
:
:
Q-Q Quantile-Quantile plot [[77]]
HTTP 2.4
222...444 HHHTTTTTTPPP
111000777111000BBB
222555000333222BBB
110000BB
222MMMBBB
7758B
126168B
50B
2MB
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5.64
Pareto
53
4
30s
0.13s
k N
d
Pareto
1900 2244000000
Tcpdump Tcpshhhooowww [[[444]]] TTTcccpppddduuummmppp
TCP/IP 300B TTCCPP 333000000BBB TCP
HTTP HHHTTTTTTPPP
HTTP
Tcpshow HTTP
TCP HHTTTTPP TTTCCCPPP
555...VVVoooIIIPPP
PSQM PESQ
E-model
E-model 0 100
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ITU-T G.107 E
1
1 R MOS
ITU-T G.107 RRR R
1 Ro Ro
SLR NNNooo
No
Nc Nos Nor
Nfo Ro SLR RLR Ps
Pr Ds Dr TELR
2 Is Is
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Iolr Ist Iq
Is
T qdu
3 Id Id
Idte Idle IIIdddddd
Id
4 Ie-eff Ie-eff
Ie Bbl Ppl
55 AAA [4]
E-Model ITU-T G.107
E-Model R R R 0-100 0 100
MOS 1-5 1 5 R
MOS
IP [5 6]
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1 delay IP
E
[7]
2 echo 16 ms
TELR
3 noise Ps Pr
4 Speech compression
G.711
G.729 A G.723.1 111
1
5 Packet loss
R MOS
93.2 MOS 4.4 G.107
94
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IP PSTN VVVoooIIIPPP
= - - - -
IIITTTUUU
EE R
1
2
3
4
100~200ms
150ms 200ms
VoIP
RTP
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50ms MOS
VoIP RTP
RTP
R
VoIP
VoIP 111000%%%
5% IP 5%
E-model
E-model VoIP
RRRTTTPPP VVVoooIIIPPP
VoIP
E-model RRR MMMOOOSSS
1.LTE
UE eNodeB UE
UE TA Timing Advance TA
UE
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UE LTE PRACH eNodeB
UE RAR UE 11 TA 0 1282
TA 0 0.67ms 0.52us 16Ts 16/(15000X2048)
100 KM UE RAR TA
N = T ´16
TA A
UE UE
eNodeB UE eNodeB UE
TA UE eNodeB UE Time Alignment
Timer TA eNodeB UE
UE eNodeB TA Time Alignment
Timer UE TA UE
UE TA
UE LTE eNodeB
UE SRS CQI HARQ PPPUUUSSSCCCHHH
TA TTTAAA UE
TA TA 6 Bit 0 63 TTTAAA TA
N = N + (T -31)´16.
TA,new TA,old A
N TA UE N 6
TA N NNN 111 UUEE
N N 1
2.
RREE RE
1 2 1 0.5ms 1 OFDM
2 3 OOOFFFDDDMMM 1 1
OFDM 6
RS RS
RS RS 6 RS
RS RS
RS
RRRSSS
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222...333...111--11
1 2 444 3
switch LLLTTTEEE___cccooonnnfffiiiggg...nnnTTTXXX %%%% nnnnuuuummmmbbbbeeeerrrr ooooffff rrrreeeeffffeeeerrrreeeennnncccceeee ssssyyyymmmmbbbboooollllssss
case 1
numb = 4;
case 2
nnnuuummmbbb === 888;;;
ooottthhheeerrrwwwiiissseee
nnnuuummmbbb === 111222;;;
end
TTTDDDDDD FFFDDDDDD 0.5s
3.
P-SCH , S-SCH
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Type 1 PSS sslloottss ##00 ##1100 OOOFFFDDDMMM SSS
slots #0 #10 OOFFDDMM
Type 2 PPPSSSSSS sssuuubbbfffrrraaammmeee ###111 sssuuubbbfffrrraaammmeee ###666 OOOFFFDDDMMM
SSS slots #1 #11 OFDM
FDD TTTyyypppeee111 TDD TTTyyypppeee222
555 1100 15 222000MMMHHHzzz
111...000888MMMHHHzzz 62 5
PPP---SSSCCCHHH S-SCH 72 6
666222 111000
4 TTTDDDDDD FDD HARQ
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MIMO MIMO
BS MS
WLAN MIMO
Multi-user MIMO 1 MIMO
NAS:
RRC RANAP MM
SM CC SMS
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RNC NodeB UE CN
RNC NodeB
UE CN
"I7_:I,J;h:L&C
PLMN
RRC RRC UE CN RAB
SRNS SRNS
RNC SGSN/MSC SGSN/MSC
Uu
L1 L2 L3 RRC
UE UTRAN RRC UE RNC CCCNNN
NAS UE CN RNC
RRC .
, , , , , , , 2u2};]%Z4T
UU RRNNCC IIIUUU
CDF cumuuulllaaatttiiivvveee dddiiissstttrrriiibbbuuutttiiiooonnn fffuuunnnccctttiiiooonnn
a F(a)=P(x
