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This commit gets rid of sfn_slot sleep

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In the previous commit, the NRUE would record
the time it received a slot and compare this
rx time to the next slot. If the next slot
came in before it had been 500us, the NRUE
would sleep a delta amount to make the duration
between the two slot indications 500 us. This
change complicated the code and did not
improve the performance so it was removed.
Furthermore, this commit removes the old
queueing mechanism of the slot indications and
uses calloc rather than an array.
This commit is contained in:
Melissa Elkadi
2021-10-28 08:14:20 -07:00
parent 3ec5210652
commit 455e3d8343
4 changed files with 24 additions and 68 deletions
Download Patch File Download Diff File Expand all files Collapse all files
executables/nr-ue.c
+14 -23
View File
@@ -265,7 +265,7 @@ static void process_queued_nr_nfapi_msgs(NR_UE_MAC_INST_t *mac, int sfn_slot)
nfapi_nr_dl_tti_request_t *dl_tti_request = get_queue(&nr_dl_tti_req_queue);
nfapi_nr_ul_dci_request_t *ul_dci_request = get_queue(&nr_ul_dci_req_queue);
LOG_D(NR_MAC, "Try to get a ul_tti_req for sfn/slot %d %d from queue with %d items\n",
LOG_D(NR_MAC, "Try to get a ul_tti_req for sfn/slot %d %d from queue with %lu items\n",
NFAPI_SFNSLOT2SFN(mac->active_harq_sfn_slot),NFAPI_SFNSLOT2SLOT(mac->active_harq_sfn_slot), nr_ul_tti_req_queue.num_items);
nfapi_nr_ul_tti_request_t *ul_tti_request = unqueue_matching(&nr_ul_tti_req_queue, MAX_QUEUE_SIZE, sfn_slot_matcher, &mac->active_harq_sfn_slot);
if (!ul_tti_request)
@@ -394,9 +394,6 @@ static void *NRUE_phy_stub_standalone_pnf_task(void *arg)
NR_UL_TIME_ALIGNMENT_t ul_time_alignment;
memset(&ul_time_alignment, 0, sizeof(ul_time_alignment));
int last_sfn_slot = -1;
int sfn_slot;
uint64_t last_time_stamp = 0;
sfn_slot_info_t *sfn_slot_info;
while (!oai_exit)
{
@@ -405,32 +402,26 @@ static void *NRUE_phy_stub_standalone_pnf_task(void *arg)
LOG_E(NR_MAC, "sem_wait() error\n");
abort();
}
sfn_slot_info = get_queue(&nr_sfn_slot_queue);
if (sfn_slot_info == NULL)
uint16_t *sfn_slot = get_queue(&nr_sfn_slot_queue);
if (sfn_slot == NULL)
{
LOG_D(MAC, "get_queue(&nr_sfn_slot_queue) == NULL!\n");
continue;
}
sfn_slot = sfn_slot_info->sfn_slot;
if (sfn_slot == last_sfn_slot)
frame_t frame = NFAPI_SFNSLOT2SFN(*sfn_slot);
int slot = NFAPI_SFNSLOT2SLOT(*sfn_slot);
if (*sfn_slot == last_sfn_slot)
{
LOG_D(NR_MAC, "repeated sfn_sf = %d.%d\n",
sfn_slot >> 6, sfn_slot & 0x3F);
frame, slot);
continue;
}
last_sfn_slot = sfn_slot;
LOG_D(NR_MAC, "The received sfn/slot [%d %d], last time stamp %ld, current time stamp %ld\n",
NFAPI_SFNSLOT2SFN(sfn_slot), NFAPI_SFNSLOT2SLOT(sfn_slot), last_time_stamp, sfn_slot_info->time_stamp);
last_sfn_slot = *sfn_slot;
uint64_t delta = sfn_slot_info->time_stamp - last_time_stamp;
if (delta < 500)
{
LOG_D(NR_MAC, "sfn/slot [%d %d] has been received too quickly! Delta = %ld. Will sleep for %ld us\n",
NFAPI_SFNSLOT2SFN(sfn_slot), NFAPI_SFNSLOT2SLOT(sfn_slot), delta, 500 - delta);
usleep(500 - delta);
}
last_time_stamp = sfn_slot_info->time_stamp;
LOG_D(NR_MAC, "The received sfn/slot [%d %d] from proxy\n",
frame, slot);
module_id_t mod_id = 0;
NR_UE_MAC_INST_t *mac = get_mac_inst(mod_id);
@@ -443,8 +434,6 @@ static void *NRUE_phy_stub_standalone_pnf_task(void *arg)
mac->ra.generate_nr_prach = 0;
int CC_id = 0;
uint8_t gNB_id = 0;
frame_t frame = NFAPI_SFNSLOT2SFN(sfn_slot);
int slot = NFAPI_SFNSLOT2SLOT(sfn_slot);
nr_uplink_indication_t ul_info;
int slots_per_frame = 20; //30 kHZ subcarrier spacing
int slot_ahead = 2; // TODO: Make this dynamic
@@ -479,7 +468,9 @@ static void *NRUE_phy_stub_standalone_pnf_task(void *arg)
nr_ue_ul_indication(&ul_info);
check_nr_prach(mac, &ul_info, &prach_resources);
}
process_queued_nr_nfapi_msgs(mac, sfn_slot);
process_queued_nr_nfapi_msgs(mac, *sfn_slot);
free(sfn_slot);
sfn_slot = NULL;
}
return NULL;
}