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/Loss | Optional | – |
| CWDM Installation and Maintenance | – | Optional |
| Fiber Inspection | Y | Y |
| Interference Hunting | Optional | – |
| Optical Power | Y | Y |
| OTDR | – | Optional |
| PIM Detection | Y | Optional |
| RF Cable & Antenna Analysis | Y | – |
| RF Power | Y | – |
| RF Spectrum Analysis (OTA) | Y | – |
| RFoCPRI (Layer 1,/2, Interference) | Optional | Optional |
| RFoOBSAI (Layer 1,/2, Interference) | Optional | – |
| Signal Analysis | Optional | – |