maki/openairinterface5g
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Implement DL HARQ using NR_list_t

Browse Source
This commit is contained in:
Robert Schmidt
2021-02-07 10:39:39 +01:00
parent 42710ee7ba
commit 4ddd45f813
5 changed files with 95 additions and 90 deletions
Download Patch File Download Diff File Expand all files Collapse all files
openair1/SIMULATION/NR_PHY/dlsim.c
+14
View File
@@ -207,6 +207,20 @@ void nr_dlsim_preprocessor(module_id_t module_id,
sched_ctrl->mcs = g_mcsIndex;
sched_ctrl->time_domain_allocation = 2;
sched_ctrl->mcsTableIdx = g_mcsTableIdx;
/* the simulator assumes the HARQ PID is equal to the slot number */
sched_ctrl->dl_harq_pid = slot;
/* The scheduler uses lists to track whether a HARQ process is
* free/busy/awaiting retransmission, and updates the HARQ process states.
* However, in the simulation, we never get ack or nack for any HARQ process,
* thus the list and HARQ states don't match what the scheduler expects.
* Therefore, below lines just "repair" everything so that the scheduler
* won't remark that there is no HARQ feedback */
sched_ctrl->feedback_dl_harq.head = -1; // always overwrite feedback HARQ process
if (sched_ctrl->harq_processes[slot].round == 0) // depending on round set in simulation ...
add_front_nr_list(&sched_ctrl->available_dl_harq, slot); // ... make PID available
else
add_front_nr_list(&sched_ctrl->retrans_dl_harq, slot); // ... make PID retransmission
sched_ctrl->harq_processes[slot].is_waiting = false;
AssertFatal(sched_ctrl->rbStart >= 0, "invalid rbStart %d\n", sched_ctrl->rbStart);
AssertFatal(sched_ctrl->rbSize > 0, "invalid rbSize %d\n", sched_ctrl->rbSize);
AssertFatal(sched_ctrl->mcs >= 0, "invalid sched_ctrl->mcs %d\n", sched_ctrl->mcs);