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# What is target BLER?

## What is target BLER?

BLER is Block Error Rate and it is basically the decoding failure rate of Transport Blocks or in simple words, the decoding failure rate of data blocks. The usual BLER Target is around 10%.

## Why is Bler so high?

a) Run a report for BLER in the cells identified. The BLER should be smaller or equal than 10%. If the value is larger, then, there is an indication of bad RF environment. b) Typical causes of bad BLER are downlink interference, bad coverage (holes in the network, etc.)

How BLER is calculated in 5G?

A Block Error Ratio(BLER) is defined as the ratio of the number of erroneous blocks received to the total number of blocks sent. BLER = Number of erroneous blocks / the Total number of blocks received. The BLER calculation is based on evaluating the CRC on each transport block.

### What is residual Bler?

Residual BLER: If the UE is unable to decode the data even after retransmission, the UE will send another NACK and the eNB will have to retransmit again. However, there is a limit to these retransmissions and usually they are configurable.

How do you increase Bler in LTE?

Manish Anand

1. Step 1: Identify cell with low DL (downlink) throughput. a) The first thing is to identify those cells with low throughput.
2. Step 2: Identify Downlink interference.
3. Step 3: BLER Values.
4. Step 4: MIMO Parameters.
5. Step 5: Low Demand.
6. Step 6: Scheduler Type.
7. Step 7: CQI reporting parameters.
8. Step 8: Other.

#### How is BLER calculated in LTE?

BLER (in LTE) = Number of erroneous blocks / total number of received blocks The calculation is based on CRC (Cyclic Redundancy Check) evaluation which is used for inspection the transport blocks at receiver side.

What is Block Error Rate (BLER)?

“Block Error Rate” or BLER is a measurement type of quality in telecommunication. Simple calculation of the measurement: BLER (in LTE) = Number of erroneous blocks / total number of received blocks The calculation is based on CRC (Cyclic Redundancy Check) evaluation which is used for inspection the transport blocks at receiver side.

## What is BLER in wireless communication?

“Error” is unavoidable in wireless communication due to several reasons. In many radio measurement tools, we can see two kinds of BLER: iBLER and rBLER The ratio of data blocks with initial transmission errors to all initial transmission data blocks.

## What is the variable BLER target?

The variable BLER is an enhancement on the original outer loop. Originally BLER of 10% was used but with this, the BLER target can vary between 30% and 10%. The basic idea is that low CQI users can use a higher BLER target to optimize resource efficiency.