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 and our T-BERD/MTS-5800 handheld network tester.

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

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

Easily Test Remote Radio Head Operation with CPRI and OBSAI

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

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