Thanks Thanks:  2
Showing results 1 to 2 of 2

Thread: Open loop power control

  1. #1
    Member Reputation: 16
    Join Date
    2011-08-08
    Posts
    83


    Default Open loop power control

    Hello, we know that UE in open loop power control calculates the PRACH power before sending it by calculating it from received level, require c/I, UL load....
    Assuming that we have a UE that after calculating the required PRACH power needed it exceeds the max power that can be send by UE, what would the UE do?
    Ie after calculation the UE should send 33 dBm while the max power that can be sent by UE is 24
    many thanks.

  2. # ADS
    Circuit advertisement
    Join Date
    Always
    Posts
    Many
     

  3. #2
    Member Reputation: 150
    Join Date
    2011-02-04
    Location
    Latin America
    Posts
    102


    Default Re: Open loop power control

    Just got this out of a trainning (nsn), hope it helps you out.
    N.

    •The maximum allowed UE transmit power for the PRACH procedure is defined by UEtxPowerMaxPRACH. Layer 1 of the UE controls the UE transmit power during the PRACH procedure using the ‘commanded transmit power’. If the commanded transmit power exceeds the maximum allowed transmit power then the UE transmits the maximum allowed transmit power.
    •If the commanded transmit power exceeds the maximum allowed transmit power by 6 dB then layer 1 of the UE is able to inform higher layers and exit the PRACH procedure. If the step size is 1 dB then this corresponds to transmitting 6 preambles at maximum power.

Bookmarks

Bookmarks

Posting Rules

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •