C-‐RAN architectures toward next genera on - ECOC

#D4CB95 #D4CB95

Copyright © 2014 by HFR, Inc. All rights reserved. No part of this publicaHon may be reproduced, stored in a retrieval system, or transmiJed in any form or by any means —

electronic, mechanical, photocopying, recording, or otherwise — without the permission of HFR.

HFR, Inc. Peter K. Cho

Sep. 2014

C-‐RAN architectures toward next generaHon

ECOC2014 WS5: Is NG-‐PON2 an ulHmate access soluHons? Is there anything coming aXerwards?

#D4CB95 #D4CB95 + D-RAN vs. C-RAN

§  D-RAN (Distributed RAN) : Standalone BTS where both baseband unit (BBU) and remote radio head (RRH) are co-located in a cell site. The stable power supply and A/C facilities are required in a cell site.

•  C-RAN (Centralized RAN) : For centralized baseband processing and easy maintenance, BBU moves to the central office from a cell site.

•  “C” of C-RAN extended to “Cooperative Radio”, “Cloud Computing”, and “Clean Systems”

Copyright ⓒ 2014 HFR Confidential 2

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3 Copyright ⓒ 2014 HFR ConfidenHal

Fronthaul Solu,on Demands

C-‐RAN Evolu,on Scenario

※ the number of C-RAN macrocell sites new addition (Source : Maravedis, 2013)

38,000 sites

59,000 sites

62,000 sites

58,000 sites

51,000 sites

Prospect of C-‐RAN and Fronthaul

#D4CB95 #D4CB95 C-‐RAN Deployment Considera<on I


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Copyright ⓒ 2012 HFR Confidential 5

C-‐RAN Deployment Considera<on II

#D4CB95 #D4CB95 Op<cal Transport of CPRI

Copyright ⓒ 2014 GB Confidential 6

BBU RRU

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CWDM Lambda Allocation (1)

1270 nm

O-‐Band

1290 nm

1310 nm

1330 nm

1350 nm

1370 nm

1390 nm

1410 nm

1430 nm

1450 nm

1470 nm

S-‐Band

1490 nm

1510 nm

1530 nm

C-‐Band

1550 nm

1570 nm

L-‐Band

1590 nm

1610 nm

E-‐Band

Water-peak

General CWDM Lambdas (16 lambdas)

6WL or 2WL CWDM Lambdas (72 lambdas) : Non-Standard Technology

1270 nm

O-‐Band

1290 nm

1310 nm

1330 nm

1350 nm

1370 nm

1390 nm

1410 nm

1430 nm

1450 nm

1470 nm

S-‐Band

1490 nm

1510 nm

1530 nm

C-‐Band

1550 nm

1570 nm

L-‐Band

1590 nm

1610 nm

E-‐Band

Water-peak Reserved for DWDM

•  6WL : 12 General CWDM lambda x 6 = 72 lambdas •  2WL : 12 General CWDM lambda x 2 = 24 lambdas

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CWDM Lambda Allocation (2): 6WL

Parameters Wavelength Remarks

λC 1271/1291/1311/1331/1351/1411nm 1431/1451/1471/1491/1511/1591nm

λ1 λC - 3.05

λ2 λC - 1.45

λ3 λC + 0.15

λ4 λC + 1.75

λ5 λC + 3.35

λ6 λC + 4.95

λ6λ5λ4λ3λ2λ1λC - 7.5nm λC + 7.5nm

1.6nm 1.6nm 1.6nm 1.6nm 1.6nm

0.4nm

(CPRI 36 ch)

#D4CB95 #D4CB95 HetNet Deployment Scenario

•  Macro Cell : C-‐RAN •  Small Cell : Backhaul based on Fiber or Microwave Backhaul •  Small Cell RRH : CPRI over Fiber or CPRI over Microwave(under 400M) •  WiFi : Ethernet Backhaul

Copyright ⓒ 2014 GB ConfidenHal 9

#D4CB95 #D4CB95 Ac<ve WDM Fronthaul


#D4CB95 #D4CB95 Ac<ve and Passive Fronthaul


#D4CB95 #D4CB95 Epilog

•  No doubt, C-‐RAN shall be the majority of Radio Access Network of MNOs. –  No one solu<on but various combina<on dependent on MNO –  Co-‐exit C-‐RAN and Tradi<onal Technologies

•  Network flexibility in Backhaul and Fronthaul technologies •  HetNet for Macro, Micro, Pico, Femto cell

–  MNOs shall define own C-‐RAN topologies. –  New transmission technologies

•  Extended WDM : 6WL CWDM + DWDM •  OTN, NG-‐PON2, Milimeter wireless

•  C-‐RAN shall improve Radio performance –  CoMP, IC-‐IC, eIC-‐IC

•  Moving from Centralized RAN to Cloud RAN –  Accelera<ng virtualiza<on of the baseband processing –  Ready for so`ware defined network

Copyright ⓒ 2014 GB ConfidenHal 12

CoMP: Coordinated MulHPoint IC-‐IC: Inter Cell Interference CoordinaHon

C-‐RAN architectures toward next genera on - ECOC

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