vol24 2 004jp - NTTドコモ ホーム · PDF file発した3.5ghz帯対応sre/rreとfhm
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3.5GHzଳTD-LTEಋೖʹجہஔͷ։ ுग़ແઢஔ ߴBDE μ2016 NTT DOCOMO, INC. ຊهࡌܝࢽͷແஅసࡌΛې·ɽ 8 NTT DOCOMOςΫχΧϧɾδϟʔφϧ Vol. 24 No. 2 3.5GHzଳTD-LTE 3.5GHzଳಋೖ 3.5GHzଳTD-LTEಋೖʹجہஔͷ։ 201412ʹɼʮୈ4Ҡಈ௨৴γεςϜͷಋೖͷ Ίͷಛఆجہͷ։ઃܭըͷఆʯ૯লΑΓߦΘΕɼ 3.5GHzଳͷप৽ʹར༻ՄͱͳɽυίϞ PREMIUM 4GͷΒͳΔਐԽͱ3.5GHzଳΛ༻ TD-LTEΛಋೖɼΩϟϦΞΞάϦήʔγϣϯʹΑΓطଘ FDDଳͱΈ߹Θड৴࠷େ370Mbpsͷ௨৴αʔϏε Λ20166ʹ։ɽຊߘͰɼ3.5GHzଳTD-LTEಋ ೖʹɼߴBDEͷTD-LTEରԠɼΑͼ৽ʹن։ 3.5GHzଳରԠSRE/RREͱFHMʹɼͷ ཁΛղઆΔɽ 1. · PREMIUM 4GͷΒͳΔਐԽͱ ɼ3.5GHzଳΛ༻TD-LTE ˎ1 ΛಋೖɼΩϟϦΞΞάϦήʔγϣ ϯʢCAʣ ˎ2 ʹΑΓطଘ FDD ʢ Fre- quency Division Duplexʣ ˎ3 ଳͱΈ ߹Θड৴࠷େ370Mbpsͷ௨৴ αʔϏεΛ20166ʹ։ɽ 3.5GHz ଳ TD-LTE ಋ ೖ ͷ NW ߏΛਤ1ʹɽ PREMIUM 4GͰɼߴԽC-RAN ʢCentralized Radio Access Networkʣ ˎ4 Λ࠾༻ɼ৽ߴʹنBDEʢBase station Digital processing Equip- mentʣ ˎ5 Λ։ɼFDDͷLTE- AdvancedͰల։[1]ɼTD- LTEͷରԠɼͷߴBDE ʹରΔιϑτΣΞʹΑΔػ ՃͰݱɽ·ɼ৽पͰ Δ3.5GHzଳʹରԠΔΊʹɼε Ϟʔϧηϧ༻ͷখܕग़ுग़ ແઢஔʢSREɿlow power Small optical remote Radio Equipmentʣ ˎ6 ɼ ϚΫϩηϧ༻ͷுग़ແઢஔ ʢRREɿRemote Radio Equipmentʣ ˎ7 ͷ2ػछΛ։ɽΒʹɼඞཁ ͳແઢ༰গͳॴͷΤϦΞԽ ʹɼΑΓଟͷແઢஔΛ1 ͷߴBDEʹऩ༰ΔΊʹɼ BDEͱແઢஔͷͷϑϩϯτϗʔ ϧճઢ ˎ8 ΛෳʹΔϑϩϯτ ϗʔϧஔʢFHMɿFrontHaul Multiplexerʣ ˎ9 Λ։ɽ ຊߘͰɼΕΒ3.5GHzଳTD- LTEಋೖʹߴBDEͷTD- LTEରԠɼΑͼ৽ʹن։ 3.5GHzଳରԠSRE/RREͱFHMʹ ɼͷཁΛղઆΔɽ 2. ߴBDEͷ TD-LTEରԠ ιϑτΣΞʹΑΔػՃͰ ݱTD-LTEରԠɼϕʔεόϯυ ৴߸ॲཧػ෦ʢBBɿBaseBandʣ ˎ10 ແઢΞΫηε։෦ ౻Ҫ ; ণ ·ͻΖ ਡ๚ Θ ਅ ޛΜ ௗ↗ ͱ ଠ ΓΜΖ ࢬށͱ ࿕ Δ ΩϟϦΞपɼपଳҬΛ༻৴߸ ૹΛߦɽ ˎ4 ߴԽC-RANɿCAज़Λ׆༻ɼϚΫϩ ηϧͱεϞʔϧηϧΛڠௐΔυίϞ ఏএΔωοτϫʔΫΞʔΩςΫνϟɽ ˎ1 TD-LTEɿTDDʢΓϦϯΫͱԼΓϦ ϯΫͰಉपΛ༻ɼεϩοτͰ ৴߸ૹΛߦʣͷLTEɽ ˎ2 CAɿෳͷΩϟϦΞΛ༻ಉʹૹड ৴ΔͱʹΑΓɼطଘͷLTEͱͷόοΫ ϫʔυίϯύνϏϦςΟΛอͳΒଳ ҬԽΛߦɼߴૹΛݱΔज़ɽ ˎ3 FDDɿΓϦϯΫͱԼΓϦϯΫͰɼҟͳΔ
Transcript of vol24 2 004jp - NTTドコモ ホーム · PDF file発した3.5ghz帯対応sre/rreとfhm
3.5GHzTD-LTE
BDE
2016 NTT DOCOMO, INC.
8 NTT DOCOMO Vol. 24 No. 2
3.5GHzTD-LTE
3.5GHz
3.5GHzTD-LTE
20141243.5GHzPREMIUM 4G3.5GHzTD-LTEFDD370Mbps201663.5GHzTD-LTEBDETD-LTE3.5GHzSRE/RREFHM
1. PREMIUM 4G
3.5GHzTD-LTE1
CA2FDDFre-
quency Division Duplex3
370Mbps
20166
3.5GHzTD-LTENW
1
PREMIUM 4GC-RAN
Centralized Radio Access Network4
BDEBase
station Digital processing Equip-
ment5FDDLTE-
Advanced[1]TD-
LTEBDE
3.5GHz
SRElow power Small
optical remote Radio Equipment6
RRERemote Radio Equipment7
2
1
BDE
BDE
8
FHMFrontHaul
Multiplexer9
3.5GHzTD-
LTEBDETD-
LTE
3.5GHzSRE/RREFHM
2. BDE TD-LTE
TD-LTE
BBBaseBand10
4 C-RANCA
1 TD-LTETDDLTE
2 CALTE
3 FDD
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NTT DOCOMO Vol. 24 No. 2 9
NW
GPS
GPS
3.5GHzSRE
BDE48
3.5GHzRRE
FHM3.5GHzSRE
FHM
1 3.5GHzTD-LTENW
TD-LTE
2.1 BBTD-LTE BB
MIMO
Multiple Input Multiple Output11
[2]TDD
Time Division DuplexFDD
[3]
TDD
FDDTDD
1BDE
FDD
TDD
2.2
BDE
3.5GHz
MIMO
2.4Gbps9.8Gbps
13.5GHzTD-LTE
4
2.3 TDD2
3.5GHz
12
13
BDEGPS
GPSGPS
BDEPTPPrecision Time Pro-
tocol
PTP[4]GPS
PTPUTC
BDE
10 BB
11 MIMO
5 BDELTE
6 SRE
7 RRE
8 BDECPRICommonPublic Radio Interface
9 FHMBDE
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DDownlinkUUplink
A B
2 TDD
1 3.5GHzSRE/RRE
3.5GHz
SRE RRE
0.48W20MHz 19W20MHz
4 2
4 9
4.5kg 12kg
100W 380W
AC 100V/200V DC 48V
UTC
1.5s
3GPP
3s
3. 3.5GHz
3.5GHz
SRE
RRE2
SRERRE
TRX-INFTransmitter and
Receiver-INterFace14
T-PATransmission-Power
Amplifier15
LNALow Noise Amplifier16
17
CIRCIRculator18
BPFBand-Pass Fil-
ter19FDD
DUPDUPlexer20
TDD
CIRBPF
1
3SRERRE
17 RF
18 CIR3
12
13
14 TRX-INFBBTRXIQ
CPRI
15 T-PATRXRF
16 LNA
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NTT DOCOMO Vol. 24 No. 2 11
CPRI9.8Gbps
BDE 3.5GHzRRE
CPRIREBDE
4 4
SRE RRE 3 3.5GHzSRERRE
3.1 SRE
MIMO
SRE
41MIMO
3.84W4
3.2 RRE
2km
19W
20MHz21RRE
RRE1
24
2
RRE
4
21 RF
19 BPF
20 DUP1
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BDE48
AFHM1
BFHM1
1
4
25
6
7
8
2
2
2
2
BDE48
FHM FHM
16
3
1
1
1
1
6 FHMBDE
5 FHM
4. FHM FHM
16
5
FHM
1BDE
6
1BDE
FHM
HOHand Over22
3.5GHz
5. 3.5GHzTD-LTE
22 HO
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NTT DOCOMO Vol. 24 No. 2 13
BDETD-LTE
3.5GHz
SRE/RREFHM
MIMO
CA
PREMIUM 4G
[1] C-RAN
Vol.23No.2pp.19-24Jul. 2015.
[2] W-CDMALTEVol.18No.1pp.20-25Apr. 2010.
[3] Dual ConnectivityVol.23No.2pp.35-45Jul. 2015.
[4] 3.5GHzTD-LTEVol.24No.2pp.18-26Jul. 2016.
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