Feb. 2014
LTE
Rooftop
CPRI
RRH
MAX 30 RRH
Per RT
LTE
Macro
BS
Small Cell Backhaul
(planned)
BS
RRH
RU
RU
GE
GPON
WDM
RT
C-RAN: Centralized/Cloud RAN
BBU: Baseband Unit
RRH: Remote Radio Head
SCAN: Smart Cloud Access Network
CO
(SK Telecom’s office building)
WDM
RT
RRH RRH
RU
RU
CPRI
1. Small Cell BS (Pico/Femto)
2. Wi-Fi
GPON
LTE
Wi-Fi
# of CO » 400
# of BBU Marco Cell » 300
# of BBUs » 12,000
# of RRHs » 80,000
Legacy Macro Cell Sites è C-RAN
Small Cell
EPC
Tens of BBUs
(connecting hundreds of RRHs)
CPRI BBU
Fronthaul: Active WDM COT
RRH
RU
RU
BBU
BBU
...
BBU
Traffic
from GPON
GE
Multi-10GE
SAE
GW
IP/MPLS
WDM
RT
Master Marco Cell
RRH
(Macro cell site with
centralized BBUs)
CPRI
Rooftop
RRH
RU
RU
CPRI
RRH
RU
A few
RRHs
RT
1. Small Cell BS
(Pico/Femto)
2. Wi-Fi
BS
BS
Active WDM
GPON
Small Cell
Backhaul
(planned)
GPON
RRH
RU
RU
WDM
RT
BBU Macro Cell
Backhaul
A few BBUs
CPRI
COT
WDM
▶Deployed Fronthaul Vendor: HFR
▶Deployed HFR Solution: HSN Series
RU
RT
Macro
RRH
RRH
RU
RU
Fronthaul:
▶Fronthaul Technology of SK Telecom: Active WDM
HSN 8500 (5U)
(connecting
tens of RRHs)
BBU
...
BBU
10GE (Ring, P2P)
GE
Traffic from
GPON
IP/MPLS Router
(ALU, Cisco, Juniper)
HSN 8300 (3U)
HSN 8100 (1U)
VERY LAST MILE
LAST MILE
CPRI Fronthaul (Active WDM COT &RT: HFR HSN 8500/8300/8100)
IP/MPLS/Ethernet Backhaul
www.hfrnet.com & www.netmanias.com