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UE now sends ack/nack in format0

- NR UE scheduled response for RA PDSCH case
- UE processing of RAR DCI
- some cleanup and formatting

Using ul_dmrs_symb_pos at UE side instead of assuming that DMRS is only present at 1st symbol of PUSCH

- now the FAPI interface copies the struct directly to NR_UE_PRACH
- NR_PRACH_CONFIG_COMMON and NR_PRACH_CONFIG_INFO have been removed from FP

Guido Casati authored Feb 20, 2020 and Thomas Schlichter committed Feb 27, 2020

- takes in input configuration index and TS 38.211 PRACH tables (6.3.3.2.x)
- using FAPI NR UL config request struct, derived from SCF standard for gNB

Guido Casati authored Aug 19, 2019 and Guido Casati committed Feb 10, 2020

- Updated PRACH procedures and general code formatting
- gNB msg1 handling and RAR generation
- general bug fixing
- formatting
- missing headers
- RAR handling.

definition of config request fapi structures in UE and acquisition from rrc of config data (work in progress)

Testing of NR PDCCH/PDSCH with RRC Configuration. added RRC configuration to NR UE. Updates to UE DCI procedures (moved to MAC) and updates to FAPI interfaces for UE. nr_dlsim is functional, added profiling information for gNB TX.

nr-ip-over-LTE: Resolved issue with duplicate IP packet at the receiver UE IP interface and packet losses are reduced. Remaining to identify why occasionally IP packets are received at the PDCP stack later than the time slot of their arrival at PHY/MAC. Introduced some debug logs, to be removed later.

however, I had to hardcode the parameters for the PUSCH in nr_ulsim as the fapi interface still has bugs.

 - dci_request and dl_indication for PBCH now also on stack
 - fixed type of nrUE_config (was using structure for gNB before)
 - added configuration of PBCH to phy_config_request and using this config now in phy_procedures_nr_ue
 - we need to add configuration of PDCCH and PDSCH also to phy_config_request (there are still some hardcoded parameters)
 - removed UL scheduling for now

Final --phy_simulators warning removals for this branch, and former polar coding function corrections

removing printfs

first version of UE FAPI handling for DLSCH. paramters from DCI are now handled by MAC and passed back to the PHY to program PDSCH. Still need to check parameters and take them into account in PHY.