Block Error Rate (BLER) is an analysis of transmission errors on the radio interface.
It is based on analysis of cyclic redundancy check (CRC) results for radio link control (RLC) transport blocks and computed as below:
Signal-to-Interference Ratio (SIR), also known as the
carrier-to-interference ratio (C/I, CIR), is the quotient between the average
received modulated carrier power and the average received co-channel
interference power.
Example: Mobility movement > Handover trigger > SIR Error > UL BLER
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