Block Error Rate (BLER) is a proportion of the quantity of erroneous blocks to the total number of blocks transmitted on a digital circuit. It is utilized in estimating the error rate while separating information outlines from a Compact Disk (CD). BLER is estimated after channel de-interleaving and decoding by assessing the Cyclic Redundancy Check (CRC) on each transport block. On the radio side, the average BLER target is 10% which implies the receiver should get at least 90% successful transmission. If the target is under 10% then more re-transmission may be needed and cause radio asset utilization.