1. 22 Sep, 2020 3 commits
    • Cedric Roux's avatar
      nr: bugfix: set ul_valid_re_per_slot properly · 6cc7e221
      Cedric Roux authored
      After the UE disconnects, the next connection fails
      because the gNB cannot decode Msg3. The root cause
      seems to be this ul_valid_re_per_slot not set to 0.
      Setting it before the test fixes the problem and
      does not seem to impact anything else.
    • Cedric Roux's avatar
      nr: hack to remove UE data in gNB's PHY · 00e6a137
      Cedric Roux authored
      Some data remains in the PHY of the gNB after UE removal by
      upper layers. After some connection/deconnection/reconnection
      the gNB will exit because there is no free space in PHY.
      This commit adds some global variables shared by MAC and PHY.
      The function mac_remove_nr_ue puts UEs to be removed in it
      and the function rxtx removes what needs to be removed.
      This is a hack. It will be removed at some point in time.
      The real way to remove in the PHY should be to release
      data after some time of inactivity in the PHY, which would
      mean the UE has been removed in upper layers. Kind of
      timer-based thing. There should be no communication between
      PHY and MAC.
    • Cedric Roux's avatar
      nr: improve x2/rrc for ENDC · 4236ff2b
      Cedric Roux authored
      This commit introduces several enhancements in X2AP and RRC to deal
      with ENDC. The main goal is to deal with UE's on/off and with various
      The following work is included:
          - DC prep and DC overall X2 timers
          - X2 messages for UE release and DC timers' timeout
      Open problems:
          - what to do when the UE sends an scg Failure? This commit removes
            the UE. And this removal may not be correctly done
          - UE removal in the gNB's PHY layer (a next commit is coming,
            but it is hackish and will need a rework)
  2. 21 Sep, 2020 2 commits
  3. 18 Sep, 2020 4 commits
  4. 17 Sep, 2020 1 commit
  5. 15 Sep, 2020 2 commits
  6. 14 Sep, 2020 4 commits
  7. 12 Sep, 2020 1 commit
    • Cedric Roux's avatar
      NR: fix time keeping in RLC for gNB · 5b0efd5b
      Cedric Roux authored
      RLC has timers. We need to keep track of time. We chose to not use
      realtime but 'processing time'. That is we send a tick to RLC for every
      subframe when it is processed by the softmodem. Before this commit we
      used to increase time in the function mac_rlc_status_ind which is called
      for every subframe in the eNB, but not in the gNB (at least not in the
      current gNB). So we need another way to keep track of time.
      The function gNB_dlsch_ulsch_scheduler is called for every slot. It seems
      to be the perfect candidate to send a tick to RLC for every subframe. We
      take care of subcarrier spacing to send every subframe (one subframe is
      always 1ms), not every slot (slot duration depends on subcarrier spacing).
      It may not be the best solution. To be revised if needed.
      Note: the UE has not been fixed. Some modification is needed for the UE
      too, most probably.
  8. 11 Sep, 2020 2 commits
  9. 10 Sep, 2020 5 commits
  10. 09 Sep, 2020 7 commits
  11. 08 Sep, 2020 8 commits
  12. 07 Sep, 2020 1 commit