UE: Derive Serving Network Name from SIB1 PLMN
This MR modifies the nrUE to use the Serving Network Name derived from data
communicated by the Serving Network instead of data stored in the UICC.
Previously, the Serving Network Name (SNN) used during authentication was
constructed from the IMSI, implicitly assuming the UE was attached to its
home network. In roaming scenarios, this produced an incorrect SNN, causing
authentication and key derivation failures.
Changes:
- Extract the MCC and MNC from the SIB1 PLMN identity communicated by the
serving network.
- Store these values in the UE NAS context in order to propogate them from
RCC to NAS.
- The NAS key derivation functions (transferRES, derive_kausf, derive_kseaf)
now build the SNN based on the MCC/MNC broadcast in SIB1.
Extract MCC and MNC from the SIB1 PLMN identity and store them in the
UE NAS context to propogate them to NAS security procedures.
Previously, the Serving Network Name (SNN) used during authentication
was constructed from the IMSI, implicitly assuming the UE was attached
to its home network. In roaming scenarios, this produced an incorrect
SNN, causing authentication and key derivation failures.
The NAS key derivation functions (transferRES, derive_kausf, derive_kseaf)
now build the SNN using the MCC/MNC broadcast by the serving network in SIB1,
ensuring that authentication uses the correct serving PLMN during roaming.
T: minor: remove target record_db from automatic building
We don't install clickhouse by default, so simply running make inside
common/utils/T/ would fail. Remove record_db to not build automatically.
Fix for NTN phy-test mode
- Corrected the initialisation of ntn params changed flag. Before this change on
UE, Phy-test was not running in NTN mode.
- Removed the assert wrt slot > 64 to run FR2-NTN in phy-test
- SIB2, 19 required only in SA mode like SIB1
- Introduced new method to schedule a slot in UL/DL in Phy-test mode. Dmod/ Umod
option in the command line with a value.
- This ensures that the slot n (in slots per frame) will be scheduled if
n % value == 0
- For ex: --Dmod 1 means every slot will be scheduled
- --Dmod 2 means every 2nd slot will be scheduled, like 0,2,4,6 until the
slots per frame 1.
- this can be used for testing FDD FR2 where slots go beyond 64 which is a
limitation of -D/-U option.
[FHI72] [xran F] Revert and simplify the code for Liteon FR2 interoperability
The MR !3668 introduced a lot of unnecessary changes. This MR removes useless
code in both OAI and xran F release library.
1. Remove modifications done in the following xran functions:
process_mbuf_batch();
xran_process_srs_sym().
=> not even used with OAI 7.2 interface.
2. Also, remove xran_fs_get_num_dl_sym_sp() and xran_fs_get_num_ul_sym_sp() introduced in the same MR.
3. Remove LiteOnIgnoreUPSectionIdEnable parameter. Instead, use RunSlotPrbMapBySymbolEnable in a simple way
for xran_process_rx_sym() function.
Explanation: The xran expects UL UP packets with the same section IDs as indicated per UL CP message.
However, the section IDs of received packets are 3 for mixed slot and 13 for UL slot.
If the PRACH offset is set explicitely via config file, then its value will be used.
Otherwise, eAxC_offset = max(Nrx,Ntx).
Co-authored-by: Robert Schmidt <robert.schmidt@openairinterface.org>
Better c style pss sss
there is a commit to simplify code for pss and sss detection
then a second commit to test a idea: detect SSS with a advantage for SSS
in phase with PSS
the code use a precomputed table of rotations: 16 steaps between -PI/3 and +PI/3
This commit replaces the precomputed table by in code computation.
This version improves code understanding, while it won't make any significant difference
Notably, remove asn_codecs_prim_xer.h from the list of files, triggering
problems when re-running ninja, because the "canonical OAI asn1c"
(https://github.com/mouse07410/asn1c, commit ID
940dd5fa9f3917913fd487b13dfddfacd0ded06e) does not generate it:
ninja explain: output openair2/XNAP/MESSAGES/asn_codecs_prim_xer.h doesn't exist
In this version, a couple of files are not generated, so remove them
from the list.
Also, leave the files in the order as shown by ls.
Integration `2026.w11`
* !3864 remove xran_fh_tx_send_slot_BySymbol() and xran_fh_rx_read_slot_BySymbol()
* !3967 Harmonize the use of definition for number of symbols per slot
* !3971 Limit dl_DataToUL_ACK values to 15 as per standard
* !3414 Added NTN-FR2 FDD bands defined in release 18 in Ka-band range
* !3919 Reduce number of mutex locking in MAC->RLC direction
* !3923 XNAP: Add encode/decode and unit tests for Xn Setup Request/Response/Failure
* !3965 Enable BladeRF support in gNB Docker image
* !3904 add multi-ue support to vrtsim
* !3980 SDR reordering: correct warning, and USRP: return samples written
* !3834 Use flat buffer for txdataF in gNB L1
* !3981 Bugfix: make longer telnet cmdfunc names
* Reduce timing reference value for feptx_total in 40 MHz phytest
See merge request oai/openairinterface5g!3976
--Dmod option/--Umod option,
for example --Dmod 1 will schedule every slot in slots per frame
--Dmod 3 will schedule every 3rd slot. You can use --Dmod option togethor with -D option
same for uplink scheduling too.
for FR2 with 120Khz scs, there are 80 slots. Removed the assert such that FR2 config
can be tested in phy-test, currently bitmap works only until 64 slots.
Bugfix: make longer telnet cmdfunc names
The maximum number of cmdfunc names is 20, which IMO is too low. Worse, if it's
longer, nothing will warn us because C will just fill the array to it's end
(without \0 at the end). To remedy this:
- Allow longer names till 64 bytes (I hit the previous limit of 20)
- Check that the name is within the length limit: if somebody wants a very long
name, the strnlen() will return the maximum length, hitting that assertion.
- When reading a command during runtime, allow the corresponding maximum length.
On that occasion, also increase total number of permitted cmdfuncs.
Use flat buffer for txdataF in gNB L1
This MR changes txdataF buffer format to hold freq domain data starting from
PRB0 instead of circular buffer that starts from PRB N/2. The motive is to
simplify RE mapping function in L1 and copying data to xran lib.
- Add num_ues and ue_id parameters for server and client configuration
- Implement ul combining and dl distribution to all ues
- Each ue uses dedicated antenna offsets based on ue_id
- Works with no-chanmod mode only and with uniform antenna dimensions across all ues
The maximum number of cmdfunc names is 20, which IMO is too low. Worse,
if it's longer, nothing will warn us because C will just fill the array
to it's end (without \0 at the end). To remedy this:
- Allow longer names till 64 bytes (I hit the previous limit of 20)
- Check that the name is within the length limit: if somebody wants a
very long name, the strnlen() will return the maximum length, hitting
that assertion.
- When reading a command during runtime, allow the corresponding maximum
length.
On that occasion, also increase total number of permitted cmdfuncs.
The original error was simply "failed to write to RF", which is not very
precise. Update with sample numbers for context, and add it in another
similar case for consistency.
Co-authored-by: Sagar Arora <sagar.arora@openairinterface.org>
At least writerProcessWaitingQueue() checks for the exact number of
samples written. In many other places, we check that the return is
non-zero.
The usrp-tx-write-thread functionality returned 0, which triggers
various problems. Return the number of samples, as in the "direct write"
case (if-block before else-block).
Co-authored-by: Sagar Arora <sagar.arora@openairinterface.org>
XNAP: Add encode/decode and unit tests for Xn Setup Request/Response/Failure
This MR adds complete support for the following in accordance with
3GPP TS 38.423 v16.2.0
- Add Xn Setup Request, Response, and Failure message type definitions
- Implement ASN.1 encode/decode for all Xn Setup messages
- Add equality checks and memory management helpers
- Create XNAP unit test infrastructure
Co-author: @venkatareddy
Acknowledgement
This work was carried out as part of research and development at Indian
Institute of Science (IISc), Bengaluru.
Reduce number of mutex locking in MAC->RLC direction
Currently, the scheduler locks RLC for each operation. Concretely
- for RLC status indication (to get amount of bytes per LC), it locks per LC
- for RLC indication (UL traffic), it locks for each MAC SDU of which there can
be multiple in a TB
- for RLC data req (getting data from RLC to put into a transport block), it
locks for each LCID and PDU to get.
This can have a certain overhead, because we need to re-lock RLC multiple times
instead of once (per operation above). In this MR, rework the interfaces such
that it is possible to get all information/data in a single lock-unlock cycle,
which should also help with "spikes" of scheduler times (in some scenarios, it
seems the scheduler takes longer than 0.5ms, and while it's not only locking,
re-locking might contribute), and an increase of number of UEs (e.g., instead
of doing 3 * N UEs lock cycles for getting status of SRB1, SRB2, DRB1, we do
only N times). Concretely, for each UEs RLC status indication, we lock once,
only once per LCID when filling a TB (in particular for LCID 4, on high
throughput, it might be many times), and only once per UL TB (for the common
case of UL data).
Minor fixes include the increase of the Aerial VNF thread priority, and reducing
the maximum RLC indication size to reduce excessive computation (we can't have
1MB in one TB, it is too much).
Adds the API, which will always prepend a 3 byte header before writing a
PDU. This can be used to call less often into RLC, and avoid potential
locking.
The API is used at the gNB DLSCH scheduler. Also, this removes the
"overhead" calculation: since we fill the entire TB at once, RLC will
leave space for headers as necessary.
- Add Xn Setup Response message type definitions
- Implement encoder and decoder for Xn Setup Response
Xn Setup Response (3GPP TS 38.423v16.2.0 §9.1.3.2)
- Global NG-RAN Node ID (M)
- TAI Support List (M)
- Add equality check and memory management helpers
- Extend XNAP library unit tests to cover Setup Response
- Add initial XnAP library structure under openair2/XNAP/lib
- Implement common XnAP helper utilities (xnap_lib_common)
- Add gNB interface management module for Xn Setup procedures
- Introduce XnAP message type definitions in xnap_messages_types.h
- Integrate XnAP library into build system (CMakeLists.txt)
- Add standalone XnAP library unit test (xnap_lib_test)
- Implement encoder, decoder + test for Xn Setup Request
Xn Setup Request (3GPP TS 38.423v16.2.0 §9.1.3.1)
- Global NG-RAN Node ID (M)
- TAI Support List (M)
- AMF Region Information (M)
- Extend conversions.h with MACRO_BIT_STRING_TO_GNB_ID utility
Co-authored-by: Sreeshma Shiv <sreeshmau@iisc.ac.in>
Added NTN-FR2 FDD bands defined in release 18 in Ka-band range
* NTN-FR2 bands 510, 511, 512 added. TS 38.101-5 v 18.9 defines these 3 FR2-FDD
bands for NTN operation.
* These bands are defined in Ka band range (17.3Ghz - 31Ghz).
* Tested using the added conf files using RFSIM and GEO configuration.
* There were some inconsistencies observed when testing with RFSimulator before UE
Syncs to the gNB in terms of samples being written for FR2 configurations. Once
the UE syncs, the inconsistencies disappear.
* this is the problem - UE writes incorrect number of samples and gNB complains
about getting samples in past
* The above inconsistencies were also fixed in this merge request.
* These commits solving above inconsistencies were removed from this MR and a
different MR was raised. MR with those commits: !3928.
So far txdataF buffer has DC RE as the first element. This was prefered
most likely to avoid memcpy before iFFT but comes with a small
complexity in RE mapping functions.
Instead, we use a flat buffer that holds freq domain data starting from
first negative SC. After resource mapping is done on all channels, each
OFDM symbol is shifted before iFFT so that the buffer start with DC RE.
This reduces complexity in mapping functions and later on when passing
beam IDs to 7.2 split RU especially when a beam is associated to
interleaved RB and/or REs.
There is already a memcpy in place to copy txdataF from gNB stuct to RU
struct. So this change does not introduce new memcpy.
Limit dl_DataToUL_ACK values to 15 as per standard
If min feedback time is high enough otherwise we might fail to encode/decode
pucch-Config
Assertion (enc_rval.encoded > 0 && enc_rval.encoded <= max_buffer_size * 8) failed!
In encode_cellGroupConfig() /home/francesco/openairinterface5g/openair2/LAYER2/NR_MAC_gNB/nr_radio_config.c:4029
ASN1 message encoding failed (dl-DataToUL-ACK, 18446744073709551615)!
Jaroslava Fiedlerova