NR_UE: slightly improve timing synchronization by minimizing the adjustment of the filtered peak position value

Start the new slot processing thread already before writing samples to the USRP.
This parallelizes slot processing and reading/writing samples from/to USRP.

sumit authored 2 years ago and Thomas Schlichter committed 2 years ago

t_reassembly timer as clp and also provision as per 38.821 7.2.2.1 when harq is enabled, scheduling_offset yet to be added

Parminder Singh authored 3 years ago and Thomas Schlichter committed 2 years ago

- with no-harq flag same harq ID can be reused for a new transmission.
- NO retransmission of unsuccessful transmissions with this flag.
- Each time NDI is flipped to ensure new data for transmission.
- UE will also not send any ACK for DL.

Bo Zhao authored 4 years ago and Thomas Schlichter committed 2 years ago

example for simulating 120ms one-way delay:
gNB: -P 7372800 --gnb_k2 480 --ul_sched_f 64
UE: -P 7372800 -A 14745600 --ue_slot_Rx_Tx 480 --ue_k2 480

Bo Zhao authored 4 years ago and Thomas Schlichter committed 2 years ago

- Add CL options for additional DURATION_RX_TO_TX and k2 value at UE, additional k2 at gNB
- Apply additional DURATION_RX_TO_TX at UE
- Apply the additional k2 at UE for scheduled msg3 by RAR and scheduled UL transmission by DCL. Re-compute the next Tx frame number
- Apply the additional k2 at gNB for scheduled msg3 and scheduled UL transmission. Re-compute the next Tx frame number
- Increase the RA window counter for reception of RAR
- Fix the data type for larger slot number in function get_samples_slot_timestamp
- Example for a one-way delay of 120ms: run gNB with "-P 7372800 --gnb_k2 480", run UE with "-P 7372800 -A 14745600 --ue_slot_Rx_Tx 480 --ue_k2 480"

Bo Zhao authored 3 years ago and Marwan Hammouda committed 2 years ago

- CMakeLists modification: add QtWidgets library, add new source files, MOC (Meta-Object Compiler) on the given source file
- build_oai modification
- Activate new GUI with Qt on the UE side
- 2 x 3 widget with I/Q sample for PDSCH
- Drop-down list implementation
- some minor bugfixes