- cmake version 3.12 defines libxml2 module; the default path is
/usr/share/cmake-3.<sub-version>/Modules/FindLibXml2.cmake
- OAI requires minimum cmake version 3.16
- RU IP address - to connect to RUs via netconf
- DU MAC address - for setting up the CU-planes on RU; not used in xran
- VLAN tag (*) - for setting up the CU-planes on RU; not used in xran
- DU keypair - for authentication when connecting to RU(s)
The parameters that RU-controller shall retreive from RU list of
capabilities:
- MTU
- compression
- RU MAC address
- PRACH offset (**)
(*) VLAN tag is not used in xran but an option is given in fh_config struct.
In my opinion, it is not a very suitable place, as it is needed for VFs.
Therefore, I moved it in the initialization part for M-plane purposes.
(**) PRACH offset shall be >= max(Ntx,Nrx), as per O-RAN CUS specification:
"The O-DU may decide to use same eAxC ID value to address endpoints on different O-RUs,
but eAxC ID values assigned to one O-RU must be unique within the O-RU’s endpoints of same direction."
=> however, LITEON supports flexible assignment of PRACH eAxC IDs, so
we made a workaround in the xran library to support PRACH eAxC IDs same
as PUSCH eAxC IDs.
According to 38.331 , cell specific K-OFFSET provided in SIB19 is provided in number of slots as per 15Khz SCS
Koffset before being applied, needs to be updated to the slots according to the configured subcarrier spacing.
These two functions use the EPC class to potentially fill in
EPC/5GC-related information, or start a packet tracer (tshark). The only
pipeline that uses these functions is RAN-gNB-N300-Timing-Phytest-LDPC,
which does not use a core network. This functionality is not used, and
can therefore be removed.
Add a possibility to use an "infrastructure YAML file" to configure both
ends of the iperf2 call through a file.
Fix bugs in Iperf2: at least on my machine, iperf2 start time is logged
at 0.00 not 0.0, so update the regex to match both. Do not overwrite
results if the matched regex (otherwise, the result might be None at the
end) and suppress server output.
Add a unit test to test that this function actually works (on my
machine, with iperf v2.2.1), as well as a unit test for analysis.
Fix for wrong NSA init at UE
This error is shown in the UE logs as following
[RLC] Activated srb0 for UE 0
[RLC] SRB0 already exists for UE 0, do nothing
- This addition is based on past tests, iperf3 UDP throughput was 520Mbps DL and 40Mbps UL.
- Throughput degrades when using OAI L1 with tags beyond `2024.w30`.
- This RU is being CI tested only in the Aerial pipeline, not with OAI L1.
- The document will be updated once the issue is identified and fixed.
The above is necessary to not compile as many gNB dependencies into the
UE. RLC only uses GTP, which was satisfied by L2_NR, but that's not
necessary. However, only that change results in
/usr/bin/ld: openair2/E2AP/RAN_FUNCTION/libe2_ran_func_cuup.a(ran_func_rc.c.o): in function `get_list_for_report_style':
openair2/E2AP/RAN_FUNCTION/O-RAN/ran_func_rc.c:596:(.text+0xbe7): undefined reference to `cp_e2sm_rc_event_trigger'
/usr/bin/ld: openair2/E2AP/RAN_FUNCTION/O-RAN/ran_func_rc.c:596:(.text+0xc5b): undefined reference to `cp_e2sm_rc_event_trigger'
/usr/bin/ld: openair2/E2AP/RAN_FUNCTION/O-RAN/ran_func_rc.c:596:(.text+0xd3b): undefined reference to `cp_e2sm_rc_event_trigger'
/usr/bin/ld: openair2/E2AP/RAN_FUNCTION/O-RAN/ran_func_rc.c:596:(.text+0xd9d): undefined reference to `cp_e2sm_rc_event_trigger'
/usr/bin/ld: openair2/E2AP/RAN_FUNCTION/O-RAN/ran_func_rc.c:596:(.text+0xded): undefined reference to `cp_e2sm_rc_event_trigger'
/usr/bin/ld: openair2/E2AP/RAN_FUNCTION/libe2_ran_func_cuup.a(ran_func_rc.c.o):openair2/E2AP/RAN_FUNCTION/O-RAN/ran_func_rc.c:596: more undefined references to `cp_e2sm_rc_event_trigger' follow
/usr/bin/ld: openair2/E2AP/RAN_FUNCTION/libe2_ran_func_cuup.a(ran_func_rc_subs.c.o): in function `remove_rc_subs_data':
openair2/E2AP/RAN_FUNCTION/O-RAN/ran_func_rc_subs.c:60:(.text+0xbe): undefined reference to `find_if'
/usr/bin/ld: openair2/E2AP/RAN_FUNCTION/O-RAN/ran_func_rc_subs.c:62:(.text+0xca): undefined reference to `free_e2sm_rc_event_trigger'
nr-cuup previously satisfied these dependencies by depending on L2_NR
which links in e2_ran_func_du_cucp_cuup. However, the nr-cuup E2 RAN
functions are in e2_ran_func_cuup. In the latter, the file rc_data_ie.c
was missing (for cp_e2sm_rc_event_trigger), which in turn needs
e2sm_rc_ir_obj. Finally, find_if comes through alg.
Co-authored-by: Robert Schmidt <robert.schmidt@openairinterface.org>
Realtime and near-realtime RFSimulator alternative without channel modelling.
The purpose of this library is to allow realtime simulation of gNB and nrUE.
The library is loaded using --device.name shm_radio. The server side (gNB) should also
configure --shm_radio.role server and --shm_radio.timescale <timescale> according to requirements.
Limitations:
- Only 1UE-to-1gNB connection supported
Future work:
- Channel modelling
- Telnet API
- Histogram of the TX time budget
This implements a server-client bidirectional time domain IQ channel via
shared memory.
The server creates the channel and should be aware of the client
receiver configuration (num rx/tx antennas).
Server shall be the time source and should call shm_iq_channel_produce_samples
at regular intervals
Integration: `2025.w12`
Closes#920 and #915
See merge request oai/openairinterface5g!3325
* !3301 Remove unused NR UE PHY unit tests
* !3319 Disable EPS NAS security algorithms in 5GMM UE capabilities
* !3315 SCTP: avoid assert on partial SCTP message
* !3323 Fix long RACH regression
* !3311 Harmonize and update Frequency Range computation to the current values specified by the standard
* !3320 Miscelaneous improvements in PHY simulators
* !3286 Add support for ARM build pipeline
* !3308 remove ul_ch_estimates_time to save memory
* !3310 remove globale llr_layers to save memory, improve CPU, simplify code
* !3274 Add initial support for RedCap
* !3328 Fix ULSCH ID type to handle large max_nb_pusch values (ULSCH procedures)
* !3329 NR build improvements
* !3285 Update FHI 7.2 documentation, minor code cleanup
The 5GMM library in openair3/NAS/NR_UE/5GS/5GMM/ contains the
all the definitions necessary to do the enc/dec of 5GMM IEs.
5GMM messages can share the same IEs, therefore they can use
common definitions and enc/dec functions.
The goal of this commit is to add common definitions to new shared
5GMM library files. The consumers of fgmm_lib are the functions
defined in the openair3/NAS/NR_UE/5GS/5GMM/ library.
Teodora