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Thread: LTE RS power boost

  1. #1
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    Default LTE RS power boost

    Hi,

    Could you support to know the reel Rs power using the below config:
    MaxPower=46
    Pb=1
    Pa=-3
    BW=10M

    Thanks a lot

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  3. #2
    Member Reputation: 164
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    Default Re: LTE RS power boost

    Reference Signal Power = 18.2dBm


    Quote Originally Posted by oucht79 View Post
    Hi,

    Could you support to know the reel Rs power using the below config:
    MaxPower=46
    Pb=1
    Pa=-3
    BW=10M

    Thanks a lot

  4. #3
    Member Reputation: 18
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    2010-03-18
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    64


    Default Re: LTE RS power boost

    Ok That a lot,
    Actually my MaxPower=20W and i want to increase the power from 18.2 to 21.2, is there any issue if put Pa=-6/Pb=3?

  5. #4
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    Default Re: LTE RS power boost

    not good idea. better play with thresholds or antenna tilt etc.

    Quote Originally Posted by oucht79 View Post
    Ok That a lot,
    Actually my MaxPower=20W and i want to increase the power from 18.2 to 21.2, is there any issue if put Pa=-6/Pb=3?

  6. #5
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    2010-08-06
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    Default Re: LTE RS power boost

    Quote Originally Posted by agenov View Post
    not good idea. better play with thresholds or antenna tilt etc.

    Why is the use of RS Power Boost a bad idea?

  7. #6
    Junior Member Reputation: 10
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    Default Re: LTE RS power boost

    Just Change Rs Power to 212 and keep Pb=1 and Pa=-3, Max Power will increase to 40 W (46 dBm)
    if you change Pb=3 and Pa=-6 with Rs=212, Max Power will remain 20W (43 dBm), coverage will increase but less power allocation for PDSCH type A

  8. #7
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    Default Re: LTE RS power boost

    btw please don't forget to consider single / dual carrier in your power calculation
    Best people are those who are useful to others

  9. #8
    Senior Member Reputation: 476
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    2010-05-09
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    Default Re: LTE RS power boost

    Quote Originally Posted by oucht79 View Post
    Hi,

    Could you support to know the reel Rs power using the below config:
    MaxPower=46
    Pb=1
    Pa=-3
    BW=10M

    Thanks a lot
    Hello,
    the idea of LTE is to have same power for each RE So the RE power is 80 watts/(Number of RB *12) which in you case will be 21.25 dBm
    pa is the power addition and reduction on CRS so you will have 21.25-3=18.25 dBm
    pb is the power reduction.addition to Type-B RE (symbols which are including RS)

    this is not a good configuration which causes lower RS power and consequently lowercoverage and SINR
    if you are using MIMO, it is better consider +3dB power addition in RS power to extend the coverage and better SINR

    cheers
    Last edited by babak1349; 2017-08-30 at 06:53 PM

  10. #9
    Junior Member Reputation: 13
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    Default Re: LTE RS power boost

    Very good explaination. Just to add pa represent those RE's which doesnt have RS symbols. pb are those RE's which contain RS RE's
    Quote Originally Posted by babak1349 View Post
    Hello,
    the idea of LTE is to have same power for each RE So the RE power is 80 watts/(Number of RB *12) which in you case will be 21.25 dBm
    pa is the power addition and reduction on CRS so you will have 21.25-3=18.25 dBm
    pb is the power reduction.addition to Type-B RE (symbols which are including RS)

    this is not a good configuration which causes lower RS power and consequently lowercoverage and SINR
    if you are using MIMO, it is better consider +3dB power addition in RS power to extend the coverage and better SINR

    cheers

  11. #10
    Member Reputation: 15
    Join Date
    2012-02-25
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    Default Re: LTE RS power boost

    Quote Originally Posted by pathloss View Post
    Why is the use of RS Power Boost a bad idea?
    Huawei CRS
    1.PDSCHCfg.ReferenceSignalPwr 18.2 dBm for 20 watt===>Pb
    2.PDSCH Other PDSCHCfg.Pb CellDlpcPdschPa.Pa PcOff 1 dB to -3 dB===>Pa


    E******* CRS
    1.calculated from[SectorEquipmentFunction]configuredOutputPower[EUtranCellFDD] crsGain 40000 to 300 (3 dB)==>Pa
    2.[EUtranCellFDD] pdschTypeBgain 1 ===>(Pb)


    Nokia
    1.CRS power calculated from [LNCEL] pMax[LNCEL] dlRsBoost 430 (20 watt) 1000 (0 dB)===>Pa

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