1. 26 Apr, 2019 2 commits
  2. 19 Apr, 2019 2 commits
  3. 05 Apr, 2019 1 commit
  4. 03 Apr, 2019 1 commit
    • Cedric Roux's avatar
      bugfixes for the ue T tracer · 4905a5e8
      Cedric Roux authored
      Not much major changes. In openair1/PHY/LTE_UE_TRANSPORT/dci_tools_ue.c,
      in the function generate_ue_dlsch_params_from_dci,
      'harq_pid' was removed and dci_info_extarcted.harq_pid is now used for
      all cases.
      
      The ue T tracer only deals with PHY signals (no MAC, RLC, PDCP, RRC).
      4905a5e8
  5. 26 Mar, 2019 1 commit
  6. 19 Mar, 2019 4 commits
    • Cedric Roux's avatar
      PHY: add parameter end_of_burst_delay for TDD · 275e5b3a
      Cedric Roux authored
      end_of_burst_delay is used to stop TX only "after a while".
      If we stop right after effective signal, with USRP B210 and
      B200mini, we observe a high EVM on the S subframe (on the
      PSS).
      A value of 400 (for 30.72MHz) solves this issue. This is
      the default.
      
      This default value can be changed in the configuration file.
      For example:
      
      RUs = (
          {
             local_rf       = "yes"
               nb_tx          = 1
               nb_rx          = 1
               att_tx         = 20
               att_rx         = 0;
               bands          = [7];
               max_pdschReferenceSignalPower = -27;
               max_rxgain                    = 105;
               eNB_instances  = [0];
               sf_extension = 312;
               end_of_burst_delay = 200;
          }
      );
      
      Here we would set a value of 200.
      
      The value to put in the configuration file is for
      30.72MHz. The value is scaled accordingly at runtime
      (thus only one value to set for every RB configuration,
      25, 50 or 100, leading to less problems when adapting
      configuration files).
      
      This option is for experts and should not be changed
      randomly.
      275e5b3a
    • Cedric Roux's avatar
      PHY: bugfix: compute start/end of burst correctly for TDD · a05753df
      Cedric Roux authored
      Start of burst is to start TDD DL transmission in the driver
      (tested with USRP for the moment).
      
      End of burst is to stop DL transmission.
      
      Start of burst can only happen for a DL subframe when the
      previous subframe was an UL subframe.
      
      End of burst can only happen for an S subframe.
      
      It's impossible for a subframe to be both the start of a burst
      and the end of a burst.
      
      This can be checked with eg. http://niviuk.free.fr/lte_resource_grid.html
      (or reading the specs).
      a05753df
    • Cedric Roux's avatar
    • Cedric Roux's avatar
      PHY: make sf_extension a parameter · ee5b7390
      Cedric Roux authored
      This parameter is meaningful in TDD, to decide
      when to start DL at eNB side. Since there is a
      need for the PA to be operational, we need to
      transmit a bit before the DL subframe coming
      after an UL subframe. (We transmit zeros.)
      
      We used to use N_TA_offset which may be too much.
      Default value is now N_TA_offset/2 and can be
      changed in the configuration file, in the RUs
      section, like:
      
      RUs = (
          {
             local_rf       = "yes"
               nb_tx          = 1
               nb_rx          = 1
               att_tx         = 0
               att_rx         = 0;
               bands          = [7];
               max_pdschReferenceSignalPower = -27;
               max_rxgain                    = 105;
               eNB_instances  = [0];
               sf_extension = 312;
          }
      );
      
      N_TA_offset is 624 (for 30.72MHz). In the example
      above, we set sf_extension = 312, which is also
      the default.
      
      The value to put in the configuration file is for
      30.72MHz. The value is scaled accordingly at runtime
      (thus only one value to set for every RB configuration,
      25, 50 or 100, leading to less problems when adapting
      configuration files).
      
      This option is for experts and should not be changed
      randomly.
      ee5b7390
  7. 14 Mar, 2019 1 commit
  8. 09 Mar, 2019 1 commit
  9. 08 Mar, 2019 1 commit
  10. 04 Mar, 2019 1 commit
  11. 25 Feb, 2019 1 commit
  12. 22 Feb, 2019 1 commit
  13. 19 Feb, 2019 1 commit
  14. 17 Feb, 2019 2 commits
  15. 13 Feb, 2019 2 commits
  16. 12 Feb, 2019 4 commits
  17. 29 Jan, 2019 1 commit
  18. 24 Jan, 2019 2 commits
  19. 22 Jan, 2019 3 commits
  20. 21 Jan, 2019 1 commit
  21. 17 Jan, 2019 2 commits
  22. 16 Jan, 2019 2 commits
  23. 14 Jan, 2019 1 commit
  24. 07 Jan, 2019 1 commit
    • Cedric Roux's avatar
      fix a lot of file mode · aea6b4b5
      Cedric Roux authored
      For whatever reason most of the files had their permission
      changed from 644 to 755, which is not wanted.
      aea6b4b5
  25. 23 Dec, 2018 1 commit