build_oai primarily builds UHD for OAI. Thus, a number of targets (B100,
USRP1/2, ...) can be omitted, as OAI does not run on them. Further,
disable documentation and man pages, which is typically not necessary
for the averages user, and does not need to be installed for containers.
Similarly to the parent, don't redirect log files to a file. It makes
the CI more complicated, and also raises user awareness of what is being
installed.
Refactor ULSCH scheduler towards more TDD pattern flexibility
Refactors ULSCH scheduler, notably to support "UL-heavy" TDD patterns,
e.g., DSUUU. Also allows to run TDD pattern2 with UL slots, which was a
limitation in the previous code.
Increase the number of aggregration level candidates. Since we have many
UEs with concurrent traffic in that pipeline, we should ensure that we
can allocate many DCIs to not waste resources (e.g., not all RBs used
because could not find DCIs for specific UEs).
Add the possibility to use UL slots in TDD pattern 2. For simplicity, we
require the mixed slot to be of the same symbols in pattern 1 & 2. For
UL slots, simply use the right amount of UL TDAs, depending on which
number of UL slots among pattern 1 & 2 is bigger.
One complication is the TDA for the mixed slot. The current code assumes
that k2 has to be equal or larger than (number of DL slots +1) (because
the spec says min k2=2, but we might want to schedule DSUUU). Then,
there could be for instance the following cases:
- only pattern 1: DSUUU DSUUU ...: the mixed slot has to be reached an
entire period in advance
- pattern 1 & 2: DSUUU DDDDD: normal mixed slot k2, e.g., like for 7DS2U
- pattern 1 & 2: DSUUU DDDSU: the mixed slot has to be reached
N_ul2+N_dl1+1 slots in advance
I can't think of more cases right now. To avoid unscheduled slots, I put
an assertion (which could also trivially be taken out).
Adds the capability to pack/unpack the TDD table in CONFIG.request
following both SCF222.10.02 (Tag 0x1027) and SCF222.10.04 (Tag 0x1035)
formats In the case of Aerial, the TDD table is packed following the
10.04 format, but with the 10.02 tag Prevent the packing of Digital
Beamforming table and Precoding Matrix table for Aerial
A new function get_best_ul_tda() allows to select the "best" TDA out of
a number of TDA. Specifically, get_best_ul_tda() considers in how many
RBs a given TDA might be allocated, and multiplies this number of RBs
with the number of symbols in the TDA to form a "score". The TDA with
the best "score" is selected, considering it maximizes resource usage.
In phytest scheduler, we use this function to verify that the given TDA
can be really allocated in all selected slots.
Schedule SRS longer in advance, so that it would also be enough even
with big k2 for UL TDA.
Remove useless types: we do not use the information on sched_srs
anymore, so remove it.
Check that the VRB map is free before making allocations.
Since the parent commit, the TDA for UL scheduling is dynamically
selected, instead of being hardcoded to specific indices. We can thus
also omit the SRS TDA if no SRS is configured.
Also add SRS-specific TDAs if we schedule further into the future.
Add multiple TDAs with k2 larger than the min_rxtxtime, to potentially
allow to allocate all available slots. For this, nr_rrc_config_ul_tda()
inspects the TDD pattern, and allocates as many TDAs as necessary. It
also sorts the TDA list, with smaller k2 and larger symbol lengths
first.
This in turn is now used by get_num_ul_tda() to use a k2 and the slot
configuration to find a suitable TDA, assuming a list as sorted in
nr_rrc_config_ul_tda().
Note that since get_num_ul_tda() does only inspect the available UL
slots, there might be overlap (e.g., when scheduling SRS), which will be
fixed in a follow-up commit.
Also, TDD pattern 2 is not handled here yet, and a follow-up commit will
fix it.
Add a loop to advance slots as determined by current ("DL") slot, and
advance further into the future (for "UL" slots) if TDAs allow. Ensure
to schedule all TDAs if it's the last DL slot, to guarantee a previously
scheduled TDA will also reoccur (i.e., for guaranteeing that
retransmissions can be made).
Note that the check for number of UE being zero is removed, as this
allows to keep "ul_next" close to the "min_next" slot. This way, we can
use fs_get_max(); otherwise, if we did not always execute this loop,
they might diverge far from each other, making the logic inside the loop
more complicated.
This commit introduces a new type "fsn_t" (frame-slot number) that
encapsulates a single frame-slot combination in a single struct. The
helper functions (in gNB_scheduler_ulsch.c) should be moved to a new
file under common/, but we don't do this here to limit the amount of
code changes.
For scheduling multiple ULSCH ahead, we will have to use different k2.
Hence, we will need to check for k2 in the TDA selection as well. The
function get_ul_tda() is renamed to get_num_ul_tda() to reflect that it
might return multiple TDAs (not done in this commit, but in a follow-up
MR). get_num_ul_tda() also returns a pointer to the first suitable TDA.
In the phy-test scheduler, simplify the selection of the TDA to use: do
not hardcode a specific K2, but rather, use the first one (with any k2).
For the multi-UL slot scheduling functionality in a follow-up commit, it
would be important to know if the scheduler allocated any UEs. If
pf_ul() allocated for some UEs, we might run it again on a different
slot. If on the other hand, no UEs were allocated, there is no point in
running it again.
Introduce support for Cat-B RU using Predefined-Beam BF with Aerial L1
This merge introduces the support for BeamID based Beamforming in OAI L2 using FAPI and leveraging Aerial L1. Support for OAI L1 is not in the scope of this MR.
Main changes:
- Introduced a third state for the analog_beamforming parameter.
0=disabled,1=analog_bf,2=oran_bf
- Correctly populated the FAPI BF PDUs (prg_size, num_prgs,
dig_bf_interfaces)
The Dockerfiles are reused for building on different architectures
(amd64/arm64). They differ, though, on some steps for downloading or
installing platform-specific utilities.
This is handled automatically when using BuildKit, which is the default
in docker versions v23.0+. Older docker versions require some special
settings. Explain this in the README.
Closes: #973
Previous commits removed min_grant_mcs and instead introduced
dl/ul_min_mcs as a more generic replacement.
Fixes: 96b0cae63e ("Drop 'min_grant_mcs' configuration parameter ")
Fixes: 699afafc6f ("Add support for 'dl_min_mcs' and 'ul_min_mcs'
configuration parameters")
Robert Schmidt