Split out to make a standalone NTN configuratio page that would be
easier to find. I only modify the headings in the new file and write an
introductory sentence of the tutorial, the rest is unchanged.
Integrate channel pipeline library with vrtsim with two acceleration
options chosen at compile time:
- threadpool if CUDA support is disabled
- CUDA otherwise
Added two versions of channel convolution and noise generation:
- accelerated via threadpool
- accelerated using CUDA
The main difference between this and previous versions of channel
convolution implementations is that these functions take a real-world
approach to input/output where both could be split unevenly over a set of
buffers, e.g. ring buffers used in vrtsim.
The CUDA-accelerated version only works on systems with unified memory, e.g. NVidia
DGX Spark or GH
- all RAN code, CI code, configuration files, dockerfiles, in CSSL v1.0
- all deployment code (openshift, charts, ancillary files like shell
scripts), in MIT
- documentation in CC-BY-4.0
- exceptions might apply and are listed in NOTICE
- there is a new LICENSES folder with all licenses
- CONTRIBUTIONS.md has been updated accordingly
For automated changes based on OAI PL v1.1:
perl -i~ -0pe 's/\/\*.*Licensed to the OpenAirInterface.*openairinterface.org\n#?/\/*\n * SPDX-License-Identifier: LicenseRef-CSSL-1.0\n/s' **/*.{c,h,cpp}
perl -i~ -0pe 's/\/\*.*Licensed to the OpenAirInterface.*openairinterface.org\n#?/\/*\n * SPDX-License-Identifier: LicenseRef-CSSL-1.0\n/s' **/*.ts
perl -i~ -0pe 's/<!--.*Licensed to the OpenAirInterface.*openairinterface.org\n.*-->/<!-- SPDX-License-Identifier: LicenseRef-CSSL-1.0 -->/s' **/*.xml
The rest (cmake, files with missing license, cmake) manually.
Remove the \file directive, as it is always superfluous because the
current file is implicit [1]:
> If the file name is omitted (i.e. the line after \file is left blank)
> then the documentation block that contains the \file command will belong
> to the file it is located in.
Author names and e-mails are not relevant for us: it can always be
inferred from git blame, and is often outdated.
Eurecom code has been contributed and was under OAI PL v1.0/v1.1.
For the cpack package contact: put generic email address that is
independent of an individual and that will remain reachable.
[1] https://www.doxygen.nl/manual/commands.html#cmdfile
Integration `2026.w13`
* !4004 Remove OSD, some scripts, oaisim references
* !3968 Fix DAS via index based beamforming
* !3982 UE: update pdcch config only after mib read
* !3851 Bugfix in UE DLSCH LLR functions
* !3933 mac: fixes to prevent prb overlapping
* !4006 Update cir-generator image tag to v0.0.1
* !4007 Remove old CUDA LDPC implementation
* !4005 FHI72: handle more than 64 cores
* !3805 \[E2 agent\] Refactor E2SM-KPM and implement support for REPORT style 1
* !3973 Introduce UE NAS Simulator
* !3966 PUCCH Format 1 decoder implementation and validation with nr_pucchsim
* !3681 Configure DigitalBeamTable in OAI and pass down to Aerial L1
* !3912 Fix Delta MCS mode, reimplement UL power control
* CI: Tune VNF configuration files in Aerial pipeline
Closes#1044
See merge request oai/openairinterface5g!4008
Adjust target SNR values and introduce RSSI thresholds in the VNF configuration
files to prevent UL saturation. These changes improve uplink stability and
performance for tests with Aerial and WNC RU.
Fix Delta MCS mode, reimplement UL power control
This change set fixes the "delta-MCS" mode, and reimplements the UL power
control loops at gNB, i.e., for PUSCH and PUCCH. It further adds new T traces
to log PUSCH/PUCCH power infrmation, and cleans up code.
The "delta-MCS" mode in OAI refers to configuring a UE with deltaMCS in the
PUSCH-PowerControl IE (see TS 38.331). In this mode, the UE adjusts the PUSCH
power for transmissions to take into account for MCS (see TS 38.213 Sec. 7.1).
In other words, the target SNR can be set to a somewhat low value, and the UE
will still use the right power for UL transmissions. Note that the spec only
foresees this adjustment of UL power when using one layer. In contrast, in the
"normal" mode, the gNB sends TPC commands to keep a UE at a fixed target SNR
(default: 20dB), regardless of the MCS or number of layers. Future work is
planned to completely remove this fixed target SNR, which is not done in this
MR yet.
Further, there is a new power control loop implementation. Prior to this MR, on
each UL transmissions, the gNB uses the SNR to decide about TPC sent to a UE in
the next transmissions. The new implementation relies on averaging the SNR, and
a "TPC in flight" average to account for the slow reaction of the average SNR.
The sum of both quantities is the current SNR that is used by the UE. See the
commit messages or documentation for more information.
Further cleanup to group data (e.g., power control configuration, refactoring of
code to save space, ...) is done. Two new T traces GNB_MAC_PUSCH_POWER_CONTROL
and GNB_MAC_PUCCH_POWER_CONTROL are added; documentation exists to explain how
to graphically plot corresponding graphs.
Configure DigitalBeamTable in OAI and pass down to Aerial L1
With this MR it will be possible to define a Beamtable in OAI and pass it down
to a L1 (Aerial or OAI) which then will either use them locally to apply
static beamforming (Split 8 with USRP) or pass them down to the RU using 7.2
split with Section Extension 1.
PUCCH Format 1 decoder implementation and validation with nr_pucchsim
This is the implementation of the PUCCH Format 1 decoder, validated with
pucchsim in the current branch.
Build:
./build_oai --nrUE --gNB --ninja --phy_simulators
Run tests:
ctest -L nr_pucchsim -j 8
Introduce UE NAS Simulator
This MR introduces a simple standalone tester for 5G UE NAS signaling and NGAP
messages. It connects to the AMF to perform NGAP and NAS encoding/decoding and
validates the UE Registration and PDU Session Establishment processes without
the overhead of a full Radio Access Network (PHY/MAC/RLC).
The motivation for this tester is as follows,
- This tester is a lightweight, deterministic tool to test the UE NAS layer
directly.
- Developers can easily inject specific NAS messages depending on the use-case.
- Developers can validate custom NAS/NGAP messages without the need to implement
complete RRC/MAC etc procedures.
Start the 5G Core network to test the UE NAS simulator. The compiling and
testing procedure is described below.
To compile:
mkdir build && cd build && cmake .. -GNinja && ninja nr-ue-nas-simulator-test
To run:
LD_LIBRARY_PATH=. ./tests/nr-ue-nas-simulator/nr-ue-nas-simulator-test -O ../tests/nr-ue-nas-simulator/test.conf
This commit completes the PUCCH Format 1 decoder implementation using
maximum-likelihood detection with RE averaging across symbols/RB (and
hop-wise averaging for intra-slot hopping). It also updates the PUCCH
simulation/test flow to align with the decoder changes, including
payload and logging consistency fixes needed for correct validation.
Do not limit DL power, because it is not done in the other pipelines
either. Set the UL target power high, as this increases the achievable
throughput high (PUCCH can be normal). Finally, increase BLER thresholds
to improve the MCS a bit.
[E2 agent] Refactor E2SM-KPM and implement support for REPORT style 1
- Refactor E2SM-KPM to:
- better handle different supported REPORT styles needed for "E2 Setup
Request"
- pass "Measurement Label" for calculating the measurement values
- Implement Subscription for E2SM-KPM REPORT style 1 and fill the PDSCH MCS
distribution measurement (CARR.PDSCHMCSDist)
- Fix the memory leakage caused by the UEs filtering based on NSSAI for REPORT
style 4
Tested successfully with and without ASan:
- in rfsim mode: gNB-mono, CU/DU and CU-CP/CU-UP/DU
- with the USRP B210: gNB-mono
and xapp_kpm_moni, xapp_rc_moni and xapp_kpm_rc xApps.
1. Allocate memory for the ue_id and ue_info_list arrays on the stack.
Explanation:
Every granularity period, the program passes through the fp_match_cond_type,
then through match_s_nssai_test_cond_type function pointers. Based on the node type,
the function used calloc() for these arrays.
=> the longer a connection with an E2SM-KPM xApp was, the more memory leakage occured.
2. If matched UEs > 0, only free the memory of ue_id content after each
Indication Message was sent.
Robert Schmidt