Combining PRACH signal from all rx antennas is done in receive beamforming with
unitiy weights.
Signed-off-by: Sakthivel Velumani <s.velumani@northeastern.edu>
this keeps the same logic as before, the understanding is that executing the GPIO command requires time or at least have an impact on the timing, so it is better not to execute it if not necessary
Signed-off-by: Sakthivel Velumani <s.velumani@northeastern.edu>
Use a structure to hold grid resource allocation and beam id.
In UL slots the allocation info is formed after L2 returns FAPI PDUs and beam
id is passed on to RU.
In DL slots the allocation info and beam id are passed to RU when samples are
sent.
Fill dig_bf_interface_list only in beamforming mode
Do Tx beamforming.
Signed-off-by: Sakthivel Velumani <s.velumani@northeastern.edu>
With the spatial stream indexing implementation there is no need to handle
stream mapping specially for DAS scenario.
Updated reference config file and documentation.
Signed-off-by: Sakthivel Velumani <s.velumani@northeastern.edu>
this parameters was used to set the total number of tx and rx streams in the
RU. with this commit, the parameter is removed and the total number of streams
reflect the number of antenna ports specified in the RU section of config file.
Signed-off-by: Sakthivel Velumani <s.velumani@northeastern.edu>
Modified nr_layer_precoder_simd() to be a generic function that multiply input
complex vector with a complex weight and renamed to nr_beamformer_simd(). The
earlier precoding function when called for multiple layers sequentialy accesses
data from each layer in the input buffer which is not cache friendly. The
modidied function operates on only one layer so should be better on cache hits.
Modified ctest to compare the new function against non SIMD function.
Signed-off-by: Sakthivel Velumani <s.velumani@northeastern.edu>
Rewrite rfsim beamforming simulation: Now the number of beams is equal to number
of antenna elements. Each IQ stream should have a single beam assigned. This new
requirement complicates the transport format a bit but the implementation doesn't
change that much.
Signed-off-by: Sakthivel Velumani <s.velumani@northeastern.edu>
1. Beam index:
So far rxdataF and txdataF had beam number as first index to separate freq
domain samples of antenna ports when mulitple beams are served in a slot.
This works fine when the beam is applied to entire symbol / slot but not
suitable for digital beamforming. This commit removes the beam number index
from the data buffers and the buffers hold all the antenna ports in the first
dimension. The antenna port index to be used for each UE in a MU-MIMO or
concurrent analog beam scenario is signalled by L2 via dedicated fields in
the FAPI PDU.
2. Beam ID array changes:
- The gNB and RU struct has a 2D array to hold beam IDs for all symbols in a
frame and all antenna ports. The order is now changes to first: symbol index
and second: antenna port because the RU access all ports' beam IDs for each
symbol / slot at a time. This ordering is optimal for maximizing cache hits.
- The type is now changed from int to uint16_t. So far the L1 had to deduce
the beam number index (done in beam_index_allocation()) from the beam ID sent
by L2 and this is done by initializing the beam_id array to -1 which denoted
no beam id set. Now since L2 explicitely passes the port indices, there is no
need for denoting if a beam id is assigned or not to a slot in L1. And
uint16_t matches with the type used by FAPI to carry beam ID. Since the type
is uin16_t, beam_id array is initialized to 0 and the check for -1 when
passing beam ID 0 to xran is also removed.
3. Number of antenna ports:
The removal of beam index from rxdataF and txdataF buffers resulted in all
antenna ports to be in a single vector. The number of logical ports passed to
L1 is not N1*N2*XP*number of beams per period. The buffer initialization
function is updated to reflect this change. DAS reference config file is
updated in accordance with these changes.
4. oaioran.c:
Remove the check of beam ID = -1 for setting nPrbElm = 0. This is a hack for
LiteON to supposedely improve performance according to Mario. If it's true
then a proper fix would be to pass allocation information from L1 and use it
instead of beam ID.
Signed-off-by: Sakthivel Velumani <s.velumani@northeastern.edu>
1. Added new config parameter to read RU port indices to be used via config
file.
2. When scheduling multiple UE on different beams in a slot, the antenna ports
used for each UE is explicitely passed down via fapi.
3. Fix dig_bf_interface_list by filling beam id for all logical ports used.
Signed-off-by: Sakthivel Velumani <s.velumani@northeastern.edu>
Copying large struct one element at a time generates much more assembly code
than memcpy and the code becomes less maintainable. This commit copies parts of
structs using memcpy.
Signed-off-by: Sakthivel Velumani <s.velumani@northeastern.edu>
Integration `2026.w17`
* !4054 Minor fixes to gNB/UE behavior in RFsim
* !4062 Minor fixes/cleanup in NGAP lib
* !4036 Fix CSI-RS estimation
* !4055 fix (RRC): do not trigger N2 HO when no active PDU sessions are present
* !3988 asn1c inside local tree
* !3762 L1 gNB type0 PDSCH
* !4069 ctest: fix tests when compiling with sanitizers, ignore build directories, fix spsc_q build
* !4067 Small compilation fixes
* !3444 7.2 FHI with XRAN K release
* !4061 T-Tracer & Data Recording v1.1: UL PHY trace modularization and recording enhancements
* !3975 ZMQ radio
* Increase PRACH queue capacity from 8 to 16
* !4059 CI: Various CI adjustments
Closes#1074 and #1073
See merge request oai/openairinterface5g!4063
CI: Various CI adjustments
- RAN-SA-FHI72-CN5G: activate/inactive carriers on VVDN RU - to check if
it improves reliability and stability of the pipeline
- RAN-SA-FHI72-CN5G: update CN with new IP range - avoid IP address
overlap with CN used in RAN-SA-AERIAL-XXX pipelines
- RAN-SA-B200-Module-SABOX-Container: test with deltaMCS in SC-FDMA test
case
- RAN-NSA-B200-Module-LTEBOX-Container: adjust PRACH DTX threshold to
reduce number of false RA attempts on eNB
- remove retx check in RAN-SA-Multi-Antenna-CN5G and RAN-SA-AERIAL-CN5G -
to avoid false CI failure caused by unsuccessful retx check of
interfering UE
- adjust RAN-SA-Multi-Antenna-CN5G and RAN-SA-AERIAL-CN5G configs to
improve UL throughput
Manual testing showed that lowering the RX gain reduces UL
retransmissions and improves overall UL throughput in the 100 MHz 2x2
test case of the SA-Multi-Antenna CN5G pipeline.
Add vvdn-activate-carriers.sh to verify RU PTP synchronization and
configuration. Activates carriers on VVDN RU by editing sysrepo running
datastore (INACTIVE->ACTIVE).
Add vvdn-inactive-carriers.sh to reverse the operation, setting all
carriers back to INACTIVE via sysrepocfg.
After the changes introduced in !3991, multiple PRACH PDUs can be
pushed from L2 to L1 before being processed. This leads to the PRACH
queues filling up and triggering "PRACH occ queue is full" issues on
the gNB.
This commit increases the queue size from 8 to 16, providing additional
buffering and preventing queue overflows as reported in #1072.
ZMQ radio
This is a zmq radio implementation that attempts to integrate NR UE with
the ocudu project.
OAI integration status:
This can currently be used to connect OAI gnb and OAI UE.
Compilation:
cmake --build . --target nr-softmodem nr-uesoftmodem ldpc params_libconfig zmq_radio
Running
- gNB command:
sudo ./nr-softmodem -O ../targets/PROJECTS/GENERIC-NR-5GC/CONF/gnb.sa.band78.fr1.106PRB.usrpb210.conf --gNBs.[0].min_rxtxtime 6 --device.name zmq_radio --zmq.[0].tx_channels tcp://127.0.0.1:4556 --zmq.[0].rx_channels tcp://127.0.0.1:4557
- UE command:
sudo ./nr-uesoftmodem -r 106 --numerology 1 --band 78 -C 3619200000 --ssb 516 --device.name zmq_radio --zmq.[0].tx_channels tcp://127.0.0.1:4557 --zmq.[0].rx_channels tcp://127.0.0.1:4556
A new CI testcase for 2x2 configuration was added.
OCUDU integration status:
The OAI NR UE enters RRC Connected state.
For more details, please refer to the description of MR !3975.
T-Tracer & Data Recording v1.1: UL PHY trace modularization and recording
enhancements
Based on the plan with @schmidtr and @roux-cedric, we agreed to enhance
the data recording in two phases:
- Phase 1: Update Data Recording framework to get All internal Massive
Updates and enhancements through the whole framework public
- Phase2: Restructure T-Tracer Apps and remove all Mems in gNB and UE
Softmodems to Get data on T-tarcer Apps for all activated Messages
symbol-by-symbol, and related Meta-data, then do the aggregation on
the T-tracer App. So, there is No Memory Creation at all on the 5G NR
Stack.
This Merge Request is for Phase 1. We address the comments given in: !3632
Summary: Refactor T-Tracer instrumentation for UL PHY data capture and
improve the data recording application (v1.0 → v1.1). This MR extracts
inline T() macro calls into modular wrapper functions, adds Unix timestamp
fields to trace messages, implements a 4-state shared memory protocol for
gNB/UE tracers, and delivers an improved synchronized recording architecture
in Python.
Changes:
- T-Tracer: Modular UL PHY trace wrappers
- Add T_messages_creator.c/.h with 7 wrapper functions (log_ul_fd_dmrs,
log_ul_fd_chan_est_dmrs_pos, log_ul_fd_pusch_iq,
log_ul_fd_chan_est_dmrs_interpl, log_ul_payload_rx_bits,
log_ul_payload_tx_bits, log_ul_scrambled_tx_bits) and a static
log_ul_common() helper
- Register T_messages_creator.c in the T library CMake build
- Update T_messages.txt definitions: Remove string timestamps and get
time stamp directly from sending_time of T-macro.
- PHY: Replace inline T() calls with wrappers
- gNB (nr_ulsch_demodulation.c, nr_ul_channel_estimation.c,
phy_procedures_nr_gNB.c): replace inline T() calls with
T_messages_creator wrappers
- UE (nr_ulsch_coding.c, nr_ulsch_ue.c): replace inline T() calls with
log_ul_payload_tx_bits and log_ul_scrambled_tx_bits wrappers
- Remove deprecated log_tools.c/.h and its CMake reference
- T-Tracer gNB & UE apps: Enhancements
- Implement 4-state shared memory protocol (WAIT → CONFIG → RECORD → STOP)
for coordination with the data recording app
- Add event_trace_msg_ul_data struct with 27 UL metadata fields
- Refactor event loop to poll()-based with proper signal handling
- Separate project IDs (gNB=2335, UE=2336) and ftok paths for independent
shared memory segments
- Update shared memory sizing: Limit number of records to
NUM_MESSAGES_PER_SLOT=5, 100 slots
- Data Recording App v1.1
- Improved architecture with thread pool and barrier synchronization
- Frame/slot-based message grouping with per-slot validation
- atexit/signal-based cleanup for graceful shared memory detach
- Delete legacy data_recording_app_v1.0.py
- Library improvements
- config_interface.py: remove legacy YAML config reader, streamline to
JSON-only
- shared_memory_interface.py: new module for shared memory
attach/read/protocol
- wireless_parameters_mapper.py: new module for NR parameter mapping
- data_recording_messages_def.py: updated message definitions for
27-field struct
- sigmf_interface.py, sync_service.py, common_utils.py: remove unused
imports and dead code
- Documentation
- Update data_recording.md for v1.1 architecture and usage
7.2 FHI with XRAN K release
Purpose:
Implement the O-RAN 7.2 Fronthaul interface using O-RAN Software Community's
XRAN release K. The new features of the release K can be leveraged and it is
compatible with DPDK version 24.11.4.
For more details please refer to the MR !3444 description.
- refactor timestamp handling
- Replace string-based SENDING_TIME with integer SEC/NSEC fields.
- Designed the shared memory protocol with a 4-state machine (STATE_WAIT=0, STATE_CONFIG=1, STATE_RECORD=2, STATE_STOP=3) for command/control between the recording app and the T-Tracer service
- Implemented two shared memory segments: one for reading commands (addr_rd) and one for writing captured data (addr_wr)
- Created event_trace_msg_ul_data struct mapping all 27 UL metadata fields (frame, slot, datetime, MCS, DMRS parameters, etc.) by name from the T-Tracer database
- Implemented setup_trace_msg_ul_data() using the G() macro to map field names to indices at startup
- Wrote the main event loop using poll() to avoid busy-waiting, with get_event() to receive T-Tracer events from the softmodem socket
Use log_ul_fd_dmrs, log_ul_fd_pusch_iq, log_ul_fd_chan_est_dmrs_pos,
log_ul_fd_chan_est_dmrs_interpl, log_ul_payload_rx_bits.
Remove redundant T_ACTIVE() guards and old timestamp formatting.
ctest: fix tests when compiling with sanitizers, ignore build directories,
fix spsc_q build
- Fix the directory to the current build directory to enable running with
sanitizers with ctest
- add build* to .gitignore to close#1074
- fix spsc_q compilation on non-C++23 compilers to close#1073
