At this point we are successfully able to build.
Additionally, we can run the scenario,
however, it does not pass. It seems that the gNB
is not connecting to the proxy correctly. Just
wanted to push the progress so far. FYI, the items
that had to be changed to correct the linking issues
were the following:
- mac_rrc_data_ind_ue vs. nr_mac_rrc_data_ind_ue
- rrc_data_req vs. nr_rrc_data_req
- mac_rrc_data_req_ue vs. nr_mac_rrc_data_req_ue
- rrc_data_req_ue vs. rrc_data_req_nr_ue
- rrc_data_req vs. nr_rrc_data_req
The listed functions should be declard in the LTE/NR
UE directory depending on the functionality. Several
were mixed. i.e.: LTE functions being called in NR UE.
Also, removing siWindowLength, siWindowLength_int,
SIBType, SIBPeriod, and siPeriod_int from the NR UE RRC.
These variable were not used in the NR UE and are defined
for LTE only.
Lastly, in the NR_IF_Module.c of the NR UE, the global
variable def_dci_pdu_rel15 is not accessible. Need to
revisit this. For not it is commented out.
The IP traffic still does not work. But we are
updating the NR UE scheduler to ensure we are are
sending true IP traffic. Also, we were getting an
assert(); as well, and there was no logs, so we
fix that in this commit as well.
1. If VNF is slower than PNF, next scheduling will be done after resync.
2. If VNF is unstable in slot progress, next scheduling will be done in next stable status.
3. SFN/SLOT indications are queued in nrUE.
4. get_queue is used instead of unquque for FIFO operation.
It also includes the queuing development. The idea
is that the 5G Userplane messages will be filled
and configured the same as previous commit, but
the uplink messages will be queued and then sent to
the gNB during the correct slot. Still WIP.
This commit properly is filing the dci_format but the
rx_ind and dl_ind has not been updated in the NR UE
prior to sending to gNB. The chnages in this commit
to properly fill the dci_format include:
- filling the dci canidates every slot indiction
- checking for a dl_tti/ul_tti containing a dci
- when dci payload is received we use the filled
dci canidates to update the dci_format
Also, a bug in LTE UE is found where we are indexing
passed the end of ue_sdu array. We added a check for this.
Furthermore, in the nr_ue_scheduler we were utilizing
tx_req but the memory wasnt properly initialized.
Also started handling ul_dci that is received in NR UE.
We now receive dci format 01, 10, and 11 at the NR UE.
The dl_info being filled in NRUE was not memset to 0, that
has been added. Additionally, we will need to get the dci_format
based on the length in the dl_config structs and map it.
For the moment the dci_format values are hard coded.
Also, there is not a field for dci_format in
nFAPI so there is a way it is detected by the NR UE.
For now, we have hardcoded the value in the stub when
we receive the DCI. Lastly, updated the nr_harq_handling
in the gNB.
This commit contains the changes to the OAI code in
the NR UE and in nFAPI.
- Filling crc_ind for msg3
- Updating pack/unpack of CRC_ind
- Creating phy abstraction CRC_ind handling in VNF
- Removal of old comments
- Only sending on RACH in phy_stub
- Calling nr_msg3_transmitted in scheduler for NSA mode
The send_standlone_msg will now be able to send
any type of uplink message and we fill the RX
indication in the stub_schedule_response and
are trying to send to gNB. Need to update the NR nfapi.
- Hardcoding the freq_index when filling RACH
- Not handling DCI unless dci_rel_15 global is allocated
- Verifies ra_rnti matches in prach pdu and RACH
- Updates handling of DCI and RX from dl and tx reqs
Changed NFAPI_mode check in the gNB scheduler
to ensure that the frame is correctly updated for
msg3. Also added comments in NR UE for handling
the RAR and implementing the dci/rx_ind handover
for the RAR procedure.
Also fixed a few bugs in nr-nFAPI:
- Push16->push8 fix in packing of RACH
- Allocating memory for pdu_list and preamble_list in unpack
- Properly indexing through both lists during unpack
- Created new nr_rach handling function
Several other changes in this commit include:
- Setting the number of PDUS in the ul_config
to be zero when we will it (inside of the
get_ul_config() function.)
- We reset the nprach flag to 0 for each slot.
- We return out of the prach scheduler if
mac->ul_config == NULL
- Added error checking for array indexing
- Created a dummy scheduler response function.
- Allocated ul_config_req initially
Also calling the new L1_nsa_prach_procedures()
function after using the nr_ue_scheduler. Added
some error checking in the nr_ue_scheduler. Added
some error checking in the process_nsa_msg in both
the NR and LTE UE
Seems to be working at the moment but
may need to add more info in the rach_ind.
Also, need to verify gNB is getting the
rach_ind and starting RA procedure.
However, we are not properly calling the
nr_ue_get_rach() function. The RA is being
properly initialized. In the nr_ue_get_rach()
the pRACH is not scheduled. Tried to add in
the scheduling of this, but it crashes here.
The other changes include revering the
nr_ue_get_rach() changes from previous commit.
Also, changed a few log levels and reverted
a previous change in the NR UE RRC layer that
was incorrect.
At the moment, the NSA mode worked once, but shows
unpredictable behavior. Other times it does not work.
In this commit I added several LOG_A messages for NSA
mode. Also removed old comments that were added during
development. Lastly, more comments for all the hacks
have been added.
Melissa Elkadi