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Merge remote-tracking branch 'origin/nr_ue_sib19_doppler' into integration_2025_w52 (!3663)

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NR UE: calculate DL and UL Doppler based on SIB19 information in NTN mode, fixing LEO reestablishment
This commit is contained in:
Robert Schmidt
2025-12-23 09:21:42 +01:00
parent 3fac50a288 aa3a209842
commit 8463ebf24b
18 changed files with 359 additions and 234 deletions
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doc/FEATURE_SET.md
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@@ -355,7 +355,8 @@ These modes of operation are supported:
- Different TA adjustemt algorithms between SIB19 receptions:
- Autonomous TA adjustemt based on DL time tracking
- Standard compliant epoch time based TA adjustment including orbital propagation
- UL Doppler pre-compensation based on continuous DL FO estimation
- DL Doppler compensation based on ntn-Config-r17 information
- UL Doppler pre-compensation based on ntn-Config-r17 information and residual DL FO estimation
* Highly efficient 3GPP compliant LDPC encoder and decoder (BG1 and BG2 are supported)
* Highly efficient 3GPP compliant polar encoder and decoder
* Encoder and decoder for short block
doc/RUNMODEM.md
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@@ -135,7 +135,7 @@ Here are some useful command line options for the NR UE:
|--------------------------|---------------------------------------------------------------------------------------------------------------|
| `--ue-scan-carrier` | Scan for cells in current bandwidth. This option can be used if the SSB position of the gNB is unknown. If multiple cells are detected, the UE will try to connect to the first cell. By default, this option is disabled and the UE attempts to only decode SSB given by `--ssb`. |
| `--ue-fo-compensation` | Enables the initial frequency offset compensation at the UE. Useful when running over the air and/or without an external clock/time source. |
| `--cont-fo-comp` | Enables the continuous frequency offset (FO) estimation and compensation. Parameter value `1` specifies that the main FO contribution comes from the local oscillator's (LO) accuracy. Parameter value `2` specifies that the main FO contribution comes from Doppler shift. |
| `--cont-fo-comp` | Enables the continuous frequency offset (FO) estimation and compensation. Parameter value `1` specifies that the main FO contribution comes from the local oscillator's (LO) accuracy. Parameter value `2` specifies that the main FO contribution comes from Doppler shift. Parameter value `3` specifies that no measured residual DL FO is considered for UL FO pre-compensation. |
| `--initial-fo` | Sets the known initial frequency offset. Useful especially with large Doppler frequency, e.g. LEO satellite. |
| `--freq-sync-P` | Sets the coefficient for the Proportional part of the PI-controller for the continuous frequency offset compensation. Default value 0.01. |
| `--freq-sync-I` | Sets the coefficient for the Integrating part of the PI-controller for the continuous frequency offset compensation. Default value 0.001. |