Recommended advanced settings on the eNB to optimize channel conditions

  1. LTE>>>Advanced>>>Power control parameters
    a. Max Pathloss, default is 125 at present leave it as it is and only change to 135 for high NLOS situations for eg. in cases of huge foliage in between UE and eNB
    b. Target ul SINR, default is 5 and recommended.
    c.Po_ue_pusch, default setting 0, recommended setting 7, this will increase the uplink UE signaling power.
  2. LTE>>> Mobility parameters>>
    a. A2 Event threshold, default setting 65, recommended setting 0, this will accommodate a min RSRP of -140 dBm and stop A2 triggers due to which sometimes the CPE drops are observed of CPE flapping between two eNBs is observed.
    b. Cell Selection Parameter >>> Qrxlevmin (dBm) default is -60, recommended change to -70. Min RSRP required for cell selection= 2Qrxlevmin+Qrxlevminoffset. Thus, setting the parameter = -70 will give min RSRP=2-60+1 = -139dBm.
  3. LTE>>>advanced>>>Random Access Parameters
    a. Zero Correlation Zone Config, default is 10, if the distance needed to be covered by eNB is greater than 5 miles we recommend changing this to 12 which will take the distance covered to around 9 miles, can be increased to 15 to go beyond that if there is clear LOS.

All these are to optimize the KPIs but they won’t drastically improve the RSRPs, though these settings will help the UEs in bad RF conditions to latch on to the eNB by improving the RF signals the min RSRP of -110 dBm is recommended going below that is not advisable.


Currently, the P-Max setting (Advanced > Power Control Parameters) is 23. Should this be changed to 33 to allow the UE to be able to use full power back to the eNB if needed?


I would love to see an answer to this question.


No, CPE’s MAX Output Power 23± 2dBm. Keep in mind that higher tx power will also increase the UL noise floor. Ideally we want the UE to transmit at a minimum power required to communicate back to the eNB.

you are absolutely right.