Interference Analysis with RF over CPRI (RFoCPRI)

Benefits of RFoCPRI

Modern cell sites have a distributed architecture where the base-station transceiver subsystem (BTS) is divided into two main elements:

  • a baseband unit (BBU) at the base of the tower;
  • and, a remote radio head (RRH) performing radio frequency (RF) functions, next to the antennas at the top of the tower.

The BBU and RRH communicate via the common public radio interface (CPRI). As RF access is only available at the top of the tower, the ability to detect interference can be a challenging, dangerous, and expensive task.

RF over CPRI, or RFoCPRI, technology enables effective interference analysis from the base of the tower, minimizing tower climbs, reducing safety concerns, and lowering maintenance costs.

To take advantage of RFoCPRI, operators need dependable CPRI test equipment, and VIAVI was first to market with CPRI support. VIAVI offers RFoCPRI testing on our CellAdvisor Base Station Analyzer, our T-BERD/MTS-5800 handheld network tester, and our newest solution, CPRIAdvisor.

See the table below to find the right option for you.

 CellAdvisor Base Station Analyzer TBERD/MTS-5800CPRIAdvisor
Backhaul Verification (RFC 2544, Y.1564)-Y-
Coax Insertion Gain/LossOptional--
CWDM Installation and Maintenance-Optional-
Fiber InspectionYY-
Interference HuntingOptional--
Optical PowerYY-
OTDR-Optional-
PIM DetectionYOptionalY
RF Cable & Antenna AnalysisY--
RF PowerY--
RF Spectrum Analysis (OTA)Y--
RFoCPRI (Layer 1,/2, Interference)OptionalOptionalY
RFoOBSAI (Layer 1,/2, Interference)Optional-Y
Signal AnalysisOptional--

Product Brief

Product Brief

Easily test remote radio head operation with world’s smallest, most versatile field tester.

The Role of CPRI in C-RAN Architecture: Challenges & Testing

The Role of CPRI in C-RAN Architecture: Challenges & Testing

Learn about the role of CPRI in C-RAN, and best practices for testing.

Case Study

Case Study

Learn how a Tier One operator in India used RFoCPRI technology to determine the root cause of noise rise without a tower climb.

Application Note

Application Note

Read how BBU emulation capability simplifies the deployment of cell-sites by verifying radio installation, configuration, and operation prior to commissioning.

CellAdvisor Base Station Analyzer

CellAdvisor Base Station Analyzer

See a quick introduction to CellAdvisor.

RF over Fiber

RF over Fiber

Get the basics on CellAdvisor’s RF over Fiber (CPRI and OBSAI) capabilities.

BBU Emulation

BBU Emulation

Learn how BBU emulation can save you time and money when installing cell sites.

Stop Climbing Towers

Stop Climbing Towers

Troubleshoot and maintain RF at ground level—at the BBU—with RFoCPRI.