88..11 CPRI/OBSAI Setup and StatusCPRI/OBSAI Setup and Status
CPRI (Common Public Radio Interface) is an interface designed for the
communication inside the base station used for the mobile radio communications.
OBSAI (Open Base Station Architecture Initiative) defines the architecture of the
cellular base station, including the interface between base band block and RF block.
In the OBSAI specifications, this interface is defined as RP3RP3 (Reference Point 3).
The nominal bit rates of CPRI and OBSAI are shown in the following table.
CPRI Line bit ratesCPRI Line bit rates
OptionOption
Bit Rate Bit Rate
(Mbit/s)(Mbit/s)
Multiplier × Multiplier ×
Reference bit rate × Reference bit rate ×
Coding (Mbit/s)Coding (Mbit/s)
1 614.4 1 × 491.52 × 10/8
2 1228.8 2 × 491.52 × 10/8
3 2457.6 4 × 491.52 × 10/8
4 3072.0 5 × 491.52 × 10/8
5 4915.2 8 × 491.52 × 10/8
6 6144.0 10 × 491.52 × 10/8
7 9830.4 16 × 491.52 × 10/8
8 10137.6 20 × 491.52 × 66/64
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