Integration 2020 wk44
MR923 : Fixes tun
TUN-interface related changes
MR925 : bugfix: fix frequencies in nr_bandtable
The array nr_bandtable has then been reviewed fully and all the values that were wrong have been changed. The check of correctness was done using the website https://www.sqimway.com/nr_band.php
MR931 : Finalize oaicn integration (CI)
In addition, the "known unstable scenarios" are highlighted in the CI HTML reports.
MR917 : NR CSI reporting
This is a new feature
- removed redundant initialisation of variables
- introduced two "RF helpers" function that are replacing shared code in the sync routines
- added a new .c file and updated the cmakelists and .h files
- got rid of global variable fp
- code cleanup, removed redundant and unused code
- removed unused command line options and variables
- grouped command line setting in set_options function
- the band is coming from the SI, therefore a function to get the band is not
necessary
- this solves also the limitations of the get_band algorithm with the NR bands
overlapping in the NR operating bands table (e.g. band 78 and band 48)
- this reflects the implementation of IF and IF offset in the gNB RU
- the RF frequencies are set at HW level while the target frequencies are
stored in fp, therefore the values stored in fp should not be changed
after sync as only the tx/rx freq is updated
- removed overwritten dl/ul carrier frequencies in fp after sync
- removed redundant set of tx/rx freq in ue_synch (done in init_openair0)
- removed irrelevant set of dl/ul carrier freq in get_options
- adapted the get_band function: the algorithm is now taking into account
also the UL frequency in order to fetch the proper band (this was failing
before as some NR bands have the same DL band, e.g. band 65 and 66)
- added new bands to the NR table as per TS 38.101 V16.4.0 (2020)
- made the from_nrarfcn function compatible with UL FDD (this function,
used for both DL and UL was previously working with TDD only as it
did not compute properly the frequency for the UL FDD, throwing asserts)
- introduced common functions to get the NR table idx and the duplex mode,
removing repeated code in the process
- removed the unused function to get the uldl offset
- improved some logging
- other minor fixes to the relevant code
- the RU now supports IF equipment with custom FR1 TX/RX frequencies
- this configuration parameter together with the if_freq parameter allows
to set a custom IF RX frequency for the gNB
- if the IF offset is not specified, legacy code applies
Integration 2020 wk42 (2)
MR921 : Hotfix for DL DCI issue in UE
Fixing a bug from last MR.
Fix in nr_dlsim that prevents reporting false 'PDSCH ok' message
MR915 : Fix to avoid RRC->X2AP ticking every msec when x2ap task is not enabled
The aim of itti RRC_SUBFRAME_PROCESS message (MAC->RRC) is to trigger an itti X2AP_SUBFRAME_PROCESS message (RRC->X2AP)
This change avoids creating RRC_SUBFRAME_PROCESS message if x2ap task is not enabled
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