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NR UE: add NTN specific parameter cellSpecificKoffset_r17 and use it for UL scheduling

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According to the RRC specification, cellSpecificKoffset is:
Scheduling offset used for the timing relationships that are modified for NTN (see TS 38.213 [13]).
The unit of the field K_offset is number of slots for a given subcarrier spacing of 15 kHz.
If the field is absent UE assumes value 0

This parameter `cellSpecificKoffset_r17` can be set via UE command line parameter `--ntn-koffset`.
This commit is contained in:
Thomas Schlichter
2024-07-10 14:42:42 +02:00
parent fefdac733d
commit 26175c5413
7 changed files with 84 additions and 25 deletions
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executables/nr-uesoftmodem.h
+4 -1
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@@ -12,6 +12,7 @@
#define CONFIG_HLP_DLSCH_PARA "number of threads for dlsch processing 0 for no parallelization\n"
#define CONFIG_HLP_OFFSET_DIV "Divisor for computing OFDM symbol offset in Rx chain (num samples in CP/<the value>). Default value is 8. To set the sample offset to 0, set this value ~ 10e6\n"
#define CONFIG_HLP_MAX_LDPC_ITERATIONS "Maximum LDPC decoder iterations\n"
#define CONFIG_HLP_NTN_KOFFSET "NTN cellSpecificKoffset-r17 (number of slots for a given subcarrier spacing of 15 kHz)\n"
/***************************************************************************************************************************************/
/* command line options definitions, CMDLINE_XXXX_DESC macros are used to initialize paramdef_t arrays which are then used as argument
@@ -63,7 +64,8 @@
{"chest-time", CONFIG_HLP_CHESTTIME, 0, .iptr=&(nrUE_params.chest_time), .defintval=0, TYPE_INT, 0}, \
{"ue-timing-correction-disable", CONFIG_HLP_DISABLETIMECORR, PARAMFLAG_BOOL, .iptr=&(nrUE_params.no_timing_correction), .defintval=0, TYPE_INT, 0}, \
{"SLC", CONFIG_HLP_SLF, 0, .u64ptr=&(sidelink_frequency[0][0]), .defuintval=2600000000,TYPE_UINT64,0}, \
{"num-ues", NULL, 0, .iptr=&(NB_UE_INST), .defuintval=1, TYPE_INT,0}, \
{"num-ues", NULL, 0, .iptr=&(NB_UE_INST), .defuintval=1, TYPE_INT, 0}, \
{"ntn-koffset", CONFIG_HLP_NTN_KOFFSET, 0, .uptr=&(nrUE_params.ntn_koffset), .defuintval=0, TYPE_UINT, 0}, \
}
// clang-format on
@@ -84,6 +86,7 @@ typedef struct {
int N_RB_DL;
int ssb_start_subcarrier;
int ldpc_offload_flag;
unsigned int ntn_koffset;
} nrUE_params_t;
extern uint64_t get_nrUE_optmask(void);
extern uint64_t set_nrUE_optmask(uint64_t bitmask);