breakthrough technology with revolutionary spectral efficiency carrying 7Gbps CPRI over the air within a narrow bandwidth. Describing numerous use cases for network densification and coverage by means of remote radio heads (Micro or macro RRHs).

1. 2014 - EBlink and affiliates - all rights reserved Cloud RAN 2014-
Paris May 22nd 2014
Cloud RAN 2014- Paris May 22nd 2014
Walner SAINT-AUBIN
Wireless Fronthaul Technology :
A key enabler for Cloud RAN

2. EBlink at a glance
Pioneering Wireless Fronthaul since 2005
• Founded in 2005 by Alain Rolland and Christian Bittar
• Practical solution for faster and easier mobile networks
deployment
• Offices in Paris , France and Silicon Valley, US
• 1st generation deployed with tier 1 in Europe, Africa, etc.
• 2nd generation (wireless CPRI), field-proven solution and
demonstrated radio KPIs similar to fiber RRH
• Industry leading spectral efficiency

3. EBlink leading Wireless Fronthaul
2014 - EBlink and affiliates - all rights reserved Cloud RAN 2014- Paris May 22nd 2014
Fiber & wireless
Wireless Fronthaul is required
For C-RAN success

4. Wireless Fronthaul requirements
2014 - EBlink and affiliates - all rights reserved Cloud RAN 2014- Paris May 22nd 2014
• Addressing flexibility and capacity challenges
• High radio link capacity to support typical end user data rates for LTE and
beyond :10X-100X compared the current LTE end user data rates
• High spectral efficiency
• Multi wireless technologies: 3G, 4G, 5G
• Facilitating very dense deployments of wireless fronthaul links to connect
Cloud-RAN to several RRHs
• Assuring high quality of service delivery for an optimum user experience
• Network accessibility
• Network integrity
• Network retainability
• Network mobility
• Availability
• Provide a cost-efficiency solution
• More options for MNOs
• Reducing TCO
• Ensuring a secured and faster roll out

5. Meeting key CPRI Line Rate
2014 - EBlink and affiliates - all rights reserved Cloud RAN 2014- Paris May 22nd 2014
• Example of CPRI configuration LTE 2x2 MIMO
• CPRI Line Bit Rate*
*Source: CPRI Specification V6.0 (2013-08-30 )
• Example of CPRI Line Bite Rate requirements
for a typical site configuration

6. Millimetre-wave
-PtP
-Unlicensed & light licensed
-Increase network capacity
Which frequency bands for Wireless Fronthaul?
2014 - EBlink and affiliates - all rights reserved Cloud RAN 2014- Paris May 22nd 2014
10010 20 30 40 50 60 70 80 90
6 1113 15 18 23 26 38 71 – 86 GHz7/8 42 - 43.5GHz 52 55 57 – 64 GHz28 32
E-Band
92 – 95 GHz
V-Band
2x5 GHz
channel
7 GHz
channel
Traditional Microwave bands
≤56 MHz
- Point-to-Point
- Licensed
• Radio-frequency channel arrangements
Up to
12x112 MHz
5
ISMband
• Licensed/unlicensed bands?
• Traditional Microwave bands?
• Millimetre Wave bands?

7. 2014 - EBlink and affiliates - all rights reserved Cloud RAN 2014- Paris May 22nd 2014
Using Wireless Fronthaul for C-RAN
C-RAN benefits
 Improvement of DL CoMP, latency,
CA, eICIC, O&M, etc.
 Lower OPEX/CAPEX
 Energy saving
 Simplify Upgrade and maintenance
High speed
Wireless fronthaul
Centralized BB processing
Wireless Fronthaul benefits
 Complementary to fiber for the very last
miles
 Faster and easier deployment
 Greater flexibility
 Lower TCO
High speed fronthaul (fibre)

8. Remote
macro sector
Remote
macro sector
Small sector
Small sector
Small sector
Macro cell & eNode B
Wireless
Fronthaul
Turning Macro-sites into local C-RAN

9. 2014 - EBlink and affiliates - all rights reserved Cloud RAN 2014- Paris May 22nd 2014
EBlink’s FrontLink ™ solution
FL58 microwave FL58 microwave
Wireless Fronthaul link
2,4576 Gbps, 4,9152 Gbps, 7,3728 Gbps
in Less than 70 MHz BW
NX10 Gbps
mm-wave mm-wave
• Commercially available
Future
Wireless Fronthaul link
12’’ / 30 cm
6’’/ 15 cm

10. FrontLink™ solution overview
BBU WFM WFM RRH
RRH
Digital Interfaces
AntennaAntenna
RF Interface
FrontLink™ 58 Product
RRH
Antenna
3 CPRI links over the
air interface on
a single wireless link
• Supports up to 3 RRHs on a single link
• Multi-techno access: UMTS and LTE
• Transparent to RAN frequency band
• Line Of Sight (LOS)
• Regulation : FCC & CE Compliant
• Link range : up to 400m (depend local regulation
• Bandwidth : 5725-5875MHz
• Capacity : Up to 3x20 LTE carrier 2x2 MIMO and up to 3x(4x5MHz) UMTS
Designed to fit different regulation constraints
Low latency enabled by EBlink’s Wireless Fronthaul

11. 2014 - EBlink and affiliates - all rights reserved Cloud RAN 2014- Paris May 22nd 2014
Field proven solution: High QOS KPIs delivery
Network accessibility
Network mobility
Network retainability
Fiber-based
Fronthaul
Wireless Fronthaul Fiber-based Fronthaul Wireless Fronthaul
Fiber-based Fronthaul Wireless Fronthaul

12. 2014 - EBlink and affiliates - all rights reserved Cloud RAN 2014- Paris May 22nd 2014
Field proven solution: High QOS KPIs delivery
Network integrity
RTT ping 32 bytes RTT ping 1400 bytes
Fiber-based Fronthaul Wireless Fronthaul

13. “EBlink’s FrontLink™ solutions have the potential to change the way
mobile network operators deploy their networks in the near future.
EBlink has proven that a distributed Radio Access Network approach
was now feasible using wireless CPRI transport, without sacrificing
network performance.”
Stephen Bye – CTO, Senior VP Technology Development & Strategy
Three LTE sectors
over a 430m
wireless fronthaul link
Wireless Fronthaul installation in the US
2014 - EBlink and affiliates - all rights reserved Cloud RAN 2014- Paris May 22nd 2014

14. “EBlink wireless fronthaul solution provides significant TCO advantage for
remote RRH deployment, paving the way for new network architectures.”
Denis Fauconnier – 4G Product Management Director at Alcatel- Lucent
Fiber
Wireless
fronthaul
2014 - EBlink and affiliates - all rights reserved Cloud RAN 2014- Paris May 22nd 2014
TCO comparison wireless fronthaul vs. fiber

15. TCO comparison wireless fronthaul vs. fiber
Fiber
Fiber
Wireless
fronthaul
Wireless
fronthaul
TCO analysis: macro sector extension TCO analysis: micro sectors densification
• Wireless Fronthaul is always showing lower TCO versus a fiber based scenarios
• Higher TCO of fiber due to the cost of trenching for laying out a new fiber
• In case trenching is partially required (in the case existing fiber ducts are used), the TCO
difference between fiber and wireless fronthaul decreases. However, the operator may have to
incur additional lease costs to occupy the fiber duct
• Deploying fiber will in most cases required a larger lead time when comparing to the time to install
a Wireless Fronthaul (e.g. city council permissions, time for civil works, etc.). This means that
revenues that can be generated quicker with Wireless Fronthaul because of speed of
deployment
2014 - EBlink and affiliates - all rights reserved Cloud RAN 2014- Paris May 22nd 2014

16. Conclusion:
2014 - EBlink and affiliates - all rights reserved Cloud RAN 2014- Paris May 22nd 2014
• Wireless Fronthaul is a key enabler for C-RAN
and local C-RAN
• Wireless CPRI is not obvious: many stringent
requirements
• Wireless fronthaul provides a flexible and cost-
effective interconnection between base band
and Remote Radio Heads
• mm-Waves bands are needed to support C-
RAN and 5G architectures
• EBlink: leading Wireless Fronthaul, field proven
solution, leading spectral efficiency (up to 7.37
Gbps CPRI )
• EBlink participating actively in H2020 projects
within the framework of 5G infrastructure PPP

17. Thank you
2014 - EBlink and affiliates - all rights reserved Cloud RAN 2014-
Paris May 22nd 2014