Statistical projection for controlling BLER

Abstract

Methods are disclosed for determining a block error rate (BLER) and determining if the BLER is significantly above, below or on BLER target. The method includes determining a pair of thresholds including an upper threshold and a lower threshold for a predetermined confidence level and determining a threshold in total number of blocks received. The method further includes determining a Required Compensation BLER from a number of bad blocks, a total number of blocks received and a maximum total number of blocks to receive for a purpose of statistical significance; comparing the Required Compensation BLER against the upper and lower threshold to determine if the BLER is significantly above the BLER target, below the BLER target or inconclusive; and, if the threshold in total number of blocks received is reached, then the inconclusive result is reinterpreted as the BLER being on target.

The invention claimed is: 
     
       1. A method of determining a block error rate (BLER) and determining if the determined BLER is significantly above, significantly below or on a BLER target comprising;
 determining a pair of thresholds including an upper threshold and a lower threshold for a predetermined confidence level; 
 determining a threshold in total number of blocks received; 
 determining a Required Compensation BLER from a number of bad blocks, a total number of blocks received and a maximum total number of blocks to receive for a purpose of statistical significance; and  
 comparing the Required Compensation BLER against the upper and lower threshold to determine if the determined BLER is significantly above the BLER target, significantly below the BLER target or an inconclusive result; 
 wherein, if the threshold in total number of blocks received is reached, then the inconclusive result is reinterpreted as the BLER being on target. 
 
     
     
       2. The method of  claim 1  wherein the pair of thresholds are valid for any number of received blocks, a specific BLER target, and a specific confidence value. 
     
     
       3. The method of  claim 1  wherein the determined BLER is determined from a number of bad blocks divided by a total number of blocks received. 
     
     
       4. The method of  claim 1  wherein the Required Compensation BLER is calculated by determining a first value by subtracting a total number of blocks received so far from the maximum number of blocks to be received and dividing a total number of bad blocks allowed by the first value. 
     
     
       5. The method of  claim 1  wherein the threshold for the total number of blocks received is calculated by determining a first value by subtracting the lower threshold from the BLER target, determining a second value by multiplying the BLER target by a BLER target range factor and subtracting the lower threshold from the result, and dividing the first value by the second value. 
     
     
       6. The method of  claim 1  wherein when the determined BLER is significantly above the BLER target then increasing a Signal to Interference Ratio (SIR) target; wherein when the determined BLER is significantly below the BLER target then decreasing the SIR target; and wherein when the determined result is an inconclusive result then maintaining the SIR target at a current level. 
     
     
       7. The method of  claim 1  wherein when the BLER is significantly below the BLER target then decreasing a Signal to Interference Ratio (SIR) target. 
     
     
       8. The method of  claim 1  further comprising resetting block statistics. 
     
     
       9. A method of determining a block error rate (BLER) and determining if BLER is significantly above, significantly below or on a BLER target comprising:
 determining a set of pairs of thresholds including an upper threshold and a lower threshold for a predetermined confidence level per pair; 
 determining a maximum total number of blocks received; 
 determining a BLER from a number of bad blocks and a total number of blocks received; and  
 comparing the BLER against a particular upper and lower threshold from the set of pairs of thresholds to determine if the BLER is significantly above the BLER target, significantly below the BLER target or an inconclusive result; 
 wherein, if the maximum total number of blocks received is reached, then the inconclusive result is reinterpreted as the BLER being on target. 
 
     
     
       10. The method of  claim 9  wherein the pair set of pairs of thresholds are valid for any number of received blocks, a specific BLER target and a specific confidence value. 
     
     
       11. The method of  claim 9  wherein the BLER is determined from a number of bad blocks divided by a total number of blocks received. 
     
     
       12. The method of  claim 9  wherein the threshold for the total number of blocks received is calculated by determining a first value by subtracting the lower threshold from the BLER target, determining a second value by multiplying the BLER target by a BLER target range factor and subtracting the lower threshold from the result, and dividing the first value by the second value. 
     
     
       13. The method of  claim 9  wherein when the BLER is significantly above the BLER target then increasing a Signal to Interference Ratio (SIR) target; wherein when the BLER is significantly below the BLER target then decreasing the SIR target; and wherein when the determined result is an inconclusive result then maintaining the SIR target at a current level. 
     
     
       14. The method of  claim 9  wherein when the BLER is significantly below the BLER target then decreasing a Signal to Interference Ratio (SIR) target. 
     
     
       15. The method of  claim 9  further comprising resetting block statistics. 
     
     
       16. A non-transitory computer-readable medium containing instructions for determining a block error rate (BLER) and determining if the BLER is significantly above, significantly below or on a BLER target which, when executed, cause a system to perform steps comprising:
 determining a pair of thresholds including an upper threshold and a lower threshold for a predetermined confidence level;   determining a threshold in total number of blocks received;   determining a Required Compensation BLER (RBLER) from a number of bad blocks, a total number of blocks received and a maximum total number of blocks to receive for a purpose of statistical significance; and   comparing the RBLER against the upper and lower threshold to determine if the BLER is significantly above the BLER target, significantly below the BLER target or an inconclusive result,   wherein, if the maximum total number of blocks received is reached, then the inconclusive result is reinterpreted as the BLER being on target.   
     
     
       17. The non-transitory computer-readable medium of  claim 16  further storing instructions wherein the pair of thresholds are valid for any number of received blocks, a specific BLER target, and a specific confidence value. 
     
     
       18. The non-transitory computer-readable medium of  claim 16  further storing instructions wherein the BLER is determined from a number of bad blocks divided by a total number of blocks received. 
     
     
       19. The non-transitory computer-readable medium of  claim 16  further storing instructions wherein the Required Compensation BLER is calculated by determining a first value by subtracting a total number of blocks received so far from the maximum number of blocks to be received and dividing a total number of bad blocks allowed by the first value. 
     
     
       20. The non-transitory computer-readable medium of  claim 16  further storing instructions wherein the threshold for the total number of blocks received is calculated by determining a first value by subtracting the lower threshold from the BLER target, determining a second value by multiplying the BLER target by a BLER target range factor and subtracting the lower threshold from the result, and dividing the first value by the second value.