This commit introduces a separate thread (l1_tx_thread) that processes
gNB DL/TX slots. It receives a message from the ru_thread when a new
slot started, and starts processing.
The DL part of the scheduler is run in the l1_tx_thread. Therefore,
only call UL indication (for scheduler) in UL slots. The UL indication
previously triggered the DL scheduler -- hence, it had to be called in
every slot. Now, since the DL scheduler is moved into the DL thread, we
don't have to call the scheduler in every slot anymore.
The reorder thread is removed, as reordering with this scheme is not
necessary anymore.
The main advantage of this version is that the TX can be scheduled
earlier (sl_ahead). Further, there can no longer be race conditions in
the TX path, since the scheduler/L2, TX L1 processing and the RU tx
function are all execute in the same thread (L1_tX_thread).
Also, the scheduler prepares PRACH/PUSCH/PUCCH FAPI PDUs. As of this
commit, the scheduler runs in the TX processing chain, whereas these
PDUs are destined for RX processing. Thus, too avoid data races,
instead of triggering the RX processing at the same time as TX
processing in the RU thread, this commit changes the code to trigger RX
processing after the scheduler has been run in TX processing to avoid
data races.
Finally, we synchronize RU and L1 threads. This is important for
rfsimulator, since unlike most radios, rfsimulator can run slower or
faster, depending on I/O and CPU (it does not have a stable "tick").
Co-authored-by: kiran <saikiran@iitj.ac.in>
The UL_INFO_mutex is used in only one place, and therefore useless.
Also, the scheduler uses a lock internally to prevent concurrent access.
Hence, the UL_INFO_mutex is not needed.
Remove kill_gNB_proc(), as it is now dead code.
The next commit introduces a separate gNB TX processing thread. To
properly separate DL scheduler (for scheduling decisions) from UL
indication handling (for UL packets), this commit introduces a slot
indication "tick" to run the DL scheduler which will be put into the gNB
TX processing chain instead of the UL indication.
For different reasons, the frame/slot numbers might jump (e.g., gNB and
RU machines not properly synced). The scheduler would assert for PUCCH
allocations. Handle this gracefully by printing an error message, and
resetting the PUCCH structure.
Disable DPDK telemetry to skip creation of one/two threads (depending on
DPDK version). To force users to do this, bump the version of the patch
checked by cmake.
More information on DPDK telemetry:
https://doc.dpdk.org/guides/howto/telemetry.htmlCloses: #732 (suggestion 2)
Suggested-by: Andrew Sergeev <andrew.sergeev@adtran.com>
Force the CPU affinity for ru_thread explicitly to ru_thread_core. It is
already done via threadCreate(), but force again as per change request.
Delete commented 7.2 code that did the equivalent. We cannot set it in
the driver, as we don't have access to variable ru->ru_thread_core.
Closes: #732 (suggestion 2)
Suggested-by: Andrew Sergeev <andrew.sergeev@adtran.com>
system_core is the core reserved for DPDK control threads. It was
hardcoded to 0, but it seems that one some systems, CPU 0 cannot be
reasonably isolated from kernel threads. Make it therefore configurable
(default: 0)
Closes: #732 (suggestion 1)
Suggested-by: Andrew Sergeev <andrew.sergeev@adtran.com>
The main goal of this tutorial is to get 5G end-to-end connectivity as simple and fast as possible. For advanced topic the user should search for specific documentation.
No need to pull every single image independently, we can pull all the images with the corresponding tag that is in the 'docker-compose.yaml' with the 'docker compose pull' command
This tutorial aims to achieve end-to-end connectivity as simple as possible. Let's remove this complex topic from here.
Also, if a user copy-paste the section as it was, nrUE gets a segfault because there is no imeisv here, tutorial is out-dated.
- create hash table to save ric_req_id (key) and array of ran_param_id(s) (values), per each subscription
- create RB tree to store list of ric_req_id(s) for each ran_param_id
=> when the async event occurs, it is easier and faster to search per ran_param_id and send the indication message to all xApps (ric_req_id(s)) subscribed to the same ran_param_id
- it is important to mention that both data structures need to be maintained, especially when unsubscription occurs (free_aperiodic_subscription)
Integration: 2024.w05
See merge request oai/openairinterface5g!2549
* !2537 Fix for UE PUSCH scheduler DURATION_RX_TO_TX assertion
* !2538 Fix for UE MAC PDU LCID handling
* !2542 Fix L1_SSB_CSI_RSRP table mapping and check validity
* !2544 NR UE RRC timers improvement
* !2546 Correcting the location of packages
* !2493 Fix for computing SSB subcarrier offset
* !2496 MCS for retransmission fix in case of dci failed detection at NR UE
* !2503 Handle PDU Sessions in NG Initial UE context Setup and forward 5G-S-TMSI to core
* enable caching in the docker build of the CI build steps
* !2541 Fix RA bug, improve overall logging
Robert Schmidt