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Author SHA1 Message Date
Thomas Schlichter 4b859a2eb8 fix sidelink UE issues found by sanitizer 2024-08-26 17:08:27 +02:00
Thomas Schlichter b17b44dffb add description how to run a LEO satellite rfsimulation to RUNMODEM.md 2024-08-23 14:57:48 +02:00
Thomas Schlichter ede6775ac3 fix for compilers that don't support the CMPLX() macro 2024-08-23 14:57:48 +02:00
Thomas Schlichter 0eb409f114 NR_UE: Perform autonomous timing advance to compensate for fast time drift with relatively large RTT 
As we don't have SIB19 with continuously updated ta-Common and ta-CommonDrift values yet, the UE can only adapt it's UL timing according to it's DL drift.
This is required for the UE to keep UL sync with fast time drift and relatively long RTT (e.g. LEO satellite).
We should replace this with the standard compliant way as soon as we have SIB19 with continuously updated contents.
 2024-08-23 14:57:48 +02:00
Thomas Schlichter e662721310 NR_UE: make NTN parameter ta_CommonDrift_r17 configurable via command line parameter --ntn-ta-commondrift 
While we don't have SIB19 support yet, UE gets this parameter from command line, just like --ntn-koffset and --ntn-ta-common.
We use this value to initialize the UE's time-tracking PI controller accumulator.
This allows to correctly track the time even if the delay is changing significantly (e.g. due to LEO satellite movement).
We also use it to compensate for the time drift that happenes while performing the initial sync.
 2024-08-23 10:26:18 +02:00
Thomas Schlichter fc4310cda7 fix multi-statement marco asn1cCallocOne() 2024-08-23 10:26:18 +02:00
Thomas Schlichter 4039473a70 NR_UE: add PI controller to time sync 
this allows to compensate larger continuous time drift in DL (e.g. large Doppler from LEO satellite)
 2024-08-23 10:26:18 +02:00
Thomas Schlichter 8ab7f1dd68 change returned value of UE_dl_preprocessing() in case no sampleShift change from 0 to INT_MAX 
This now allows to indicate "there was a new sampleShift calculation, and the actual value is 0"
additionally to "there was no new sampleShift calculation".
 2024-08-23 10:25:00 +02:00
Thomas Schlichter cfb6ed4d82 add example configuration using transparent LEO satellite model for rfsimulator 2024-08-20 16:46:25 +02:00
Thomas Schlichter 6a8edaf317 rfsimulator: add delay and Doppler simulation for circular orbit and add according channel models SAT_LEO_TRANS and SAT_LEO_REGEN 
Delay and Doppler computation is done as in Matlab function dopplerShiftCircularOrbit:
https://de.mathworks.com/help/satcom/ref/dopplershiftcircularorbit.html
 2024-08-20 16:46:25 +02:00
Thomas Schlichter 68b07d542c rfsimulator: correctly set center frequency 2024-08-20 16:46:25 +02:00
Thomas Schlichter fae529b384 add documentation for disable_harq flag in NTN section of doc/RUNMODEM.md 2024-07-23 10:42:10 +02:00
Thomas Schlichter b76eb19471 gNB: refactor code to handle end of using a specific HARQ process - finish_nr_dl_harq() and finish_nr_ul_harq() 2024-07-19 16:09:04 +02:00
Thomas Schlichter cd052951d5 gNB: do not schedule DLSCH ACK/NACK reporting in PUCCH for harq pid where feedback is disabled 2024-07-19 10:43:52 +02:00
Thomas Schlichter 3a014e199f NR UE: skip DLSCH ACK/NACK reporting for harq pid where feedback is disabled 2024-07-19 10:43:52 +02:00
Thomas Schlichter fe7be3f130 Make handle_nr_uci_pucch_2_3_4() more consistent regarding logs with handle_nr_uci_pucch_0_1() 2024-07-19 10:43:52 +02:00
Thomas Schlichter 44410df598 fix double reduction of sched_ul_bytes in case of failing 4th HARQ round 
sched_ul_bytes is reduced already in case the last HARQ round fails through handle_nr_ul_harq() -> abort_nr_ul_harq().
Therefore, the reduction in nr_rx_sdu() is wrong, and btw. it wrongly assumes the max. UL HARQ rounds to 4.
So simply remove this peace of code in nr_rx_sdu().
 2024-07-19 10:43:52 +02:00
Thomas Schlichter a6fb797477 improve tracking of sched_ul_bytes in nr_rx_sdu() by using sdu_lenP instead of sched_pusch.tb_size 
sched_ul_bytes tracks the volume of in-flight data.
When data is successfully received, sched_ul_bytes is decreased in nr_rx_sdu().
In case of reusing HARQ processes, the tb_size stored there is not correct.
Therefore use the actual SDU size instead.
 2024-07-19 10:43:52 +02:00
Thomas Schlichter b331ad21f4 in nr_rx_sdu() use HARQ ID from nfapi_nr_crc_t instead of feedback_ul_harq 2024-07-19 10:43:52 +02:00
Thomas Schlichter f7665357fc dont't print warning in handle_nr_ul_harq() if disable_harq == 1 2024-07-19 10:43:52 +02:00
Thomas Schlichter 9a0408a5c7 immediately reuse Msg4 HARQ ID and don't wait for Msg4 feedback if DL HARQ feedback is disabled 2024-07-19 10:43:52 +02:00
Thomas Schlichter 4baac21ec6 immediately reuse UL HARQ ID and don't wait for feedback if disable_harq == 1 2024-07-19 10:43:52 +02:00
Thomas Schlichter bf2baf2ffe immediately reuse DL HARQ ID and don't wait for feedback if DL HARQ feedback is disabled 2024-07-19 10:43:52 +02:00
Thomas Schlichter ae4cbcfb0c gNB: add config file option "disable_harq" and set pdsch_servingcellconfig->ext3->downlinkHARQ_FeedbackDisabled_r17 accordingly 2024-07-19 10:43:52 +02:00
Thomas Schlichter e6719d7718 remove superfluous semicolon from multi-line macros in oai_asn1.h 2024-07-15 10:46:05 +02:00
Thomas Schlichter 394431a594 remove nrqtscope 2024-07-13 11:22:36 +02:00
Thomas Schlichter 359880fa73 rfsimulator: use ceil() to calculate the integer number of chan_offset samples from the prop_delay_ms 
The actual propagation delay should not be smaller than the one specified.
A too short propagation delay might result in too early reception of Msg1, and with that in a mis-detection of the RAPID.
 2024-07-11 14:48:52 +02:00
Thomas Schlichter 9dc0dc5ffe NR UE: improve PSS detection by reducing the detection step size from 8 to 4 
Until commit d74b2bd19f, the PSS detection step size was 4, anyways.
The PSS detection step size is a compromise between detection duration and accuracy.
The most accurate detection step size would be 1, but this would lead to even longer initial sync time.
 2024-07-11 14:43:13 +02:00
Thomas Schlichter 4ddb2d3bac add section with NR UE NTN example to doc/RUNMODEM.md 2024-07-11 13:33:30 +02:00
Thomas Schlichter 1e47311259 NR UE: use sr_ProhibitTimer_v1700 if present 2024-07-11 13:33:30 +02:00
Thomas Schlichter 75efcf49b9 NR UE: add NTN specific parameter ta-Common and use it for initial timing advance, RA_contention_resolution_timer and RA_window_cnt 
The value for this parameter can be set via UE command line parameter `--ntn-ta-common` in milliseconds.
 2024-07-11 13:33:30 +02:00
Thomas Schlichter 021f97cf10 NR UE: increase DURATION_RX_TO_TX by cellSpecificKoffset_r17 2024-07-10 15:56:05 +02:00
Thomas Schlichter 26175c5413 NR UE: add NTN specific parameter cellSpecificKoffset_r17 and use it for UL scheduling 
According to the RRC specification, cellSpecificKoffset is:
Scheduling offset used for the timing relationships that are modified for NTN (see TS 38.213 [13]).
The unit of the field K_offset is number of slots for a given subcarrier spacing of 15 kHz.
If the field is absent UE assumes value 0

This parameter `cellSpecificKoffset_r17` can be set via UE command line parameter `--ntn-koffset`.
 2024-07-10 14:42:42 +02:00
Thomas Schlichter f7c2732899 add section with NTN example to doc/RUNMODEM.md 2024-06-03 11:54:55 +02:00
Thomas Schlichter 75f5215b22 add exemplary cellSpecificKoffset_r17, sr_ProhibitTimer_v1700, t300, t301 and t319 to conf files for 24 and 25 PRBs 2024-06-03 11:54:55 +02:00
Thomas Schlichter f1938acbab gNB: make ue_TimersAndConstants configurable via conf file 2024-06-03 11:54:55 +02:00
Thomas Schlichter 90fa3d5534 gNB: make SR timers configurable in CONF file 2024-06-03 11:54:55 +02:00
Thomas Schlichter 4cdf4d61f3 gNB: add sr_ProhibitTimer_v1700 2024-06-03 11:54:55 +02:00
Thomas Schlichter be41a4ea60 gNB: use 2 * K2 for contention_resolution_timer, as the timer starts with Msg2 transmission and ends with Msg4 ACK reception 2024-06-03 11:54:55 +02:00
Thomas Schlichter 0ce0282238 gNB: make checks for missed feedbacks more robust w.r.t. frame number warp-around in find_harq() 2024-06-03 11:54:55 +02:00
Thomas Schlichter 6b01cfb8e2 gNB: fix phytest scheduler in case no HARQ processes are available 
In case no HARQ processes are available (because all are waiting for feedback), we skip scheduling...
 2024-06-03 11:54:55 +02:00
Thomas Schlichter 8e4526e221 gNB: change TA update interval to 100 frames instead of 10 
The RTT for GEO satellites is more than 500 ms.
And as the TA update interval must be greater than the RTT, we increase it to 1 second instead of 100 ms.
Should also do no harm for terrestrial networks.
 2024-06-03 11:54:55 +02:00
Thomas Schlichter ccba7c875d gNB: add NTN specific parameter cellSpecificKoffset_r17 and use it for UL scheduling 
According to the RRC specification, cellSpecificKoffset is:
Scheduling offset used for the timing relationships that are modified for NTN (see TS 38.213 [13]).
The unit of the field K_offset is number of slots for a given subcarrier spacing of 15 kHz.
If the field is absent UE assumes value 0

This parameter `cellSpecificKoffset_r17` can be set in the gNB conf file, in the section `servingCellConfigCommon`
 2024-06-03 11:54:55 +02:00
Thomas Schlichter 2bb632a7fe fix 5G NR SA FDD configs for 25 and 25 PRBs 
make sure the SSB is offset by 4 PRBs from the BW start.
Therefore, the ARFCN for the SSB center must be offset by 14 PRB from the ARFCN for the BW start.
 2024-05-24 13:21:38 +02:00
Thomas Schlichter f969eddbe2 fix gNB to print correct --CO parameter for OAI UE in FDD case 2024-05-24 13:16:47 +02:00
Thomas Schlichter d5a0455560 fix error of taking the absolute value of 'uint64_t' 2024-05-07 20:46:37 +02:00
Thomas Schlichter 5ac881b7c1 rfsimulator: add support to simulate a long propagation delay 
Add the option `--rfsimulator.prop_delay` to specify the simulated receive-path (gNB: UL, UE: DL) propagation delay in ms.
This option can be used e.g. to simulate a simple GEO satellite channel by specifying `--rfsimulator.prop_delay 238.74` to both, the gNB and the UE.

This is part of the work developed by Fraunhofer IIS within the ESA-funded project 5G-GOA (https://connectivity.esa.int/projects/5ggoa).
 2024-05-07 20:46:37 +02:00
Thomas Schlichter aa555f9125 NR_UE: fix calculation of RA_contention_resolution_target_frame when SFN wraps 2023-12-01 16:02:17 +01:00
Thomas Schlichter 6ef5d27c08 NR_UE: fix usage of PUSCH new_data_indicator and cleanup 2023-12-01 16:02:17 +01:00
Thomas Schlichter f1a095057e fix limited UL data throughput in do-ra mode 
In case of noS1-mode, we initialize the 'logicalChannelBearer_exist' array element for the pre-configured DRB0 in function 'nr_l2_init_ue()'.
That array is indexed with the LCID.
For DRB0, the LCID is 4.
Unfortunately, the code incorrectly used the array at index 0.
Therefore, the UE sent neither scheduling requests nor buffer status reports, what resulted in extremely poor UL throughput.
 2023-07-28 15:42:47 +02:00
Thomas Schlichter 17b191a01d use OpenGL for LLR and IQ Plots and fix UE LLR Plot 
Using OpenGL for IQ and LLR Plots improves plotting time significantly!
Also use the correct length for UE CIR and UE LLR Plots.
 2023-07-28 13:49:52 +02:00
Thomas Schlichter d41147f411 fix introduced segfault in old scope 2023-07-26 13:53:55 +02:00
Thomas Schlichter c36d81a093 replace std::set<> for active plots with PlotUpdater emitting queued signals 2023-07-26 13:02:36 +02:00
Thomas Schlichter 3d1d468705 changes from review and updated indentation with clang-format 2023-07-26 10:16:56 +02:00
Thomas Schlichter c01359215d NR_UE: improve NFAPI_NR_DMRS_TYPE1_linear_interp() 
The DL filter was shifted relative to the contributing DM-RS pilots.
This is fixed by using the UL filter from gNB.
 2023-07-26 09:31:42 +02:00
Thomas Schlichter 5bc77ad169 fix typo in nr_slot_fep_init_sync() 
This function is used during initial synchronization, only.
This typo leads to wrong computation of the OFDM symbol start within a slot, after PBCH decoding.
The result is a time offset and therefore a rotation in frequency domain for the initial PDCCH and PDSCH (SIB1) reception.
 2023-07-21 13:34:49 +02:00
Thomas Schlichter b3b53506a1 improve memory alignment of some arrays in nr_pusch_channel_estimation() 2023-03-15 14:03:21 +01:00
Thomas Schlichter 96c1cadf2b fix typo in idft() function 
In case of unaligned input array, a DFT of wrong size was executed instead of a correct IDFT.
 2023-03-15 14:00:12 +01:00
Thomas Schlichter 6cee30ba79 review comments and further transform precoding cleanup 2023-03-15 11:01:47 +01:00
Thomas Schlichter 0d9268ec10 Update NR RRC to version 17.3.0 2023-03-10 10:54:43 +01:00
Thomas Schlichter 670cc4de09 fix build warnings 2023-03-09 10:50:26 +01:00
Thomas Schlichter f83f5f1a52 NR_UE: fix noise measurement if SSB crosses the center 2023-02-23 17:46:27 +01:00
Thomas Schlichter 9eb1d24504 fix size of arrays n0_subband_power and n0_subband_power_dB 2022-11-11 10:50:09 +01:00
Thomas Schlichter b257959dd4 fix display of UL signal energy and PUCCH signal energy 2022-11-11 10:48:16 +01:00
Thomas Schlichter 5aa75cb689 fix noise calculation also for odd number of PRBs 2022-11-11 10:43:25 +01:00
Thomas Schlichter 0e520e9456 fix in NR PUCCH scheduler when the list is larger than a frame 
based on a patch from Francesco Mani <email@francescomani.it>
 2022-11-07 15:33:20 +01:00
Thomas Schlichter 21721e967b workaround issue of N310 with UHD >= 4.2.0 when changing the BW 
UHD issue was reported here:
https://github.com/EttusResearch/uhd/issues/644
 2022-11-04 18:18:35 +01:00
Thomas Schlichter 5063957a16 fix merge artefact in nr_dl_channel_estimation.c 2022-11-03 09:43:03 +01:00
Thomas Schlichter c5e68e146c NR_UE: increase the accuracy of the filtered peak position value 2022-11-03 09:42:57 +01:00
Thomas Schlichter 39fe985681 NR_UE: slightly improve timing synchronization by minimizing the adjustment of the filtered peak position value 2022-11-03 09:42:47 +01:00
Thomas Schlichter a7d9f94ef3 NR_UE scope: show complete CIR 2022-11-03 09:42:41 +01:00
Thomas Schlichter cd8122d24d NR_UE: fix frequency offset estimation/compensation if SSB is in the second captured frame 2022-11-03 09:42:27 +01:00
Thomas Schlichter f73fcd94ee NR_UE: fix/add some debugging in nr_adjust_synch_ue.c and nr_dl_channel_estimation.c 2022-11-03 09:41:51 +01:00
Thomas Schlichter a2c6ad42e4 NR_UE: minor improvements in nr_initial_sync() 2022-11-03 09:41:14 +01:00
Thomas Schlichter b94d6b5b33 remove unsupported "thread_pool_size" parameter from conf files 2022-11-03 09:37:41 +01:00
Thomas Schlichter 9ae6095a78 nr_ulsim: fix calculation of statistics 2022-11-03 09:37:28 +01:00
Thomas Schlichter 54b7fde0aa NR_UE: fix noise in PDCCH scope 2022-11-03 09:31:57 +01:00
Thomas Schlichter 4e024e1f11 remove unnecessary (void*) casts from files nr_dlsch_demodulation.c and nr_ulsch_ue.c 2022-09-20 11:03:40 +02:00
Thomas Schlichter 18500674df improve nr_dlsch_decoding 2022-09-01 12:14:19 +02:00
Thomas Schlichter 1440807e23 increase prach_dtx_threshold to 20 dB to avoid fake PRACH detections 2022-08-30 11:17:34 +02:00
Thomas Schlichter 59cb602161 review changes 2022-08-29 12:43:50 +02:00
Thomas Schlichter 11693b1672 5G NR: remove hardcoded modulation order 2022-08-25 14:40:36 +02:00
Thomas Schlichter e5fad77f47 5G NR DCI improvements 2022-08-25 14:40:36 +02:00
Thomas Schlichter 8f6d084c80 small cleanup in get_type0_PDCCH_CSS_config_parameters() 2022-08-25 14:40:36 +02:00
Thomas Schlichter 7129830555 fix Msg2 scheduling 
scheduling when frame number wraps was not handled correctly
 2022-08-25 14:40:36 +02:00
Thomas Schlichter ef46fe8ba8 Add and harmonize configuration files for 5, 10, 40 MHz FDD with USRP X300 2022-08-25 14:40:36 +02:00
Thomas Schlichter c42304a797 nr_dlsim: also dump rxdataF_ext in case of debugging 2022-08-25 14:40:36 +02:00
Thomas Schlichter ae2e8060ea update band 66 configuration files for USRP X300 and N300 2022-08-25 14:40:36 +02:00
Thomas Schlichter 9e1edf2957 nr_phy_scope: improve x-axis scaling of channel impulse response and PUSCH LLR 2022-08-25 14:40:36 +02:00
Thomas Schlichter ea085b5fc1 harmonize initialization of symbol- and timeshift-rotation 2022-08-25 14:40:36 +02:00
Thomas Schlichter 1e36c48cf2 fix application of measured SSS fine frequency offset 2022-08-25 14:40:36 +02:00
Thomas Schlichter f8de623286 NR_UE: use improved version of mult-layer dlsch_extract_rbs(), also correctly handling odd number of PRBs 2022-08-25 12:10:48 +02:00
Thomas Schlichter 421eb65a9a NR_UE: fix ulsch precoding for RB crossing DC (odd number of RB) 2022-08-25 12:10:48 +02:00
Thomas Schlichter 6310606980 fix alignment issues in case of odd number of PRBs 2022-08-25 11:05:48 +02:00
Thomas Schlichter 3c17573f34 apply nr rotation only on used PRBs instead of complete OFDM symbol 2022-08-25 11:05:48 +02:00
Thomas Schlichter 21ea2f2136 pbchsim: apply nr rotation in frequency domain, like in all other places, instead of time domain 2022-08-25 10:17:59 +02:00
Thomas Schlichter e639e79220 Merge remote-tracking branch 'origin/develop' into support-15-kHz-SCS 2022-05-18 10:51:19 +02:00
Thomas Schlichter 3934f2020e slightly increase the target SNR for the nr_dlsim low SNR test to make the test more reliable 2022-05-18 09:54:59 +02:00
Thomas Schlichter 6f8b13c2ad fix nr_ulsim option "-i" has no further parameters 2022-05-18 09:50:37 +02:00
Thomas Schlichter c97d5d04ed fixes from review 2022-05-18 09:35:01 +02:00