User's Manual

CPRI configurations
Star or Daisy Chain solution
The solution is a distributed architecture composed of two optical interfaces located in:
• The digital NodeB
• The RRH
The optical modules are connected by optical fibers that carry:
• Downlink and uplink base band digital signals
• OAM information
The daisy chain allows to connect RRHs on one single optical link connected to the
digital Node B part.
In the star configuration the BBU is the central node that provides the common
connection point for all connected RRHs.
This figure shows the star and daisy chain configuration:
Different capabilities and configurations are supported, depending on whether the RRH
2X60W is connected to a 9396 d2U or to a 9926 d2U.
For RRH 2X60W on 9396 d2U, the configuration that is supported is the star
configuration with single frequency on the first Power Amplifier (PA 1).
Site configurations CPRI configurations
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Alcatel-Lucent RRH 2X60W
NN-20500-305 UA08.1
Issue 0.7 November 2011
Alcatel-Lucent – Proprietary
Use pursuant to applicable agreements
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