/* Computes PUSCH frequency hopping as defined in Section 8.4 of 36.213 */
static void compute_freq_hopping(srslte_ra_ul_pusch_hopping_t* q,
srslte_ul_sf_cfg_t* sf,
srslte_pusch_hopping_cfg_t* hopping_cfg,
srslte_pusch_grant_t* grant)
{
if (q->cell.frame_type == SRSLTE_TDD) {
ERROR("Error frequency hopping for TDD not implemented (c_init for each subframe, see end of 5.3.4 36.211)\n");
}
for (uint32_t slot = 0; slot < 2; slot++) {
INFO("PUSCH Freq hopping: %d\n", grant->freq_hopping);
uint32_t n_prb_tilde = grant->n_prb[slot];
if (grant->freq_hopping == 1) {
if (hopping_cfg->hop_mode == SRSLTE_PUSCH_HOP_MODE_INTER_SF) {
n_prb_tilde = grant->n_prb[hopping_cfg->current_tx_nb % 2];
} else {
n_prb_tilde = grant->n_prb[slot];
}
}
if (grant->freq_hopping == 2) {
/* Freq hopping type 2 as defined in 5.3.4 of 36.211 */
uint32_t n_vrb_tilde = grant->n_prb[0];
if (hopping_cfg->n_sb > 1) {
n_vrb_tilde -= (hopping_cfg->hopping_offset - 1) / 2 + 1;
}
int i = 0;
if (hopping_cfg->hop_mode == SRSLTE_PUSCH_HOP_MODE_INTER_SF) {
i = sf->tti % 10;
} else {
i = 2 * sf->tti % 10 + slot;
}
uint32_t n_rb_sb = q->cell.nof_prb;
if (hopping_cfg->n_sb > 1) {
n_rb_sb = (n_rb_sb - hopping_cfg->hopping_offset - hopping_cfg->hopping_offset % 2) / hopping_cfg->n_sb;
}
n_prb_tilde = (n_vrb_tilde + f_hop(q, hopping_cfg, i) * n_rb_sb + (n_rb_sb - 1) -
2 * (n_vrb_tilde % n_rb_sb) * f_m(q, hopping_cfg, i, hopping_cfg->current_tx_nb)) %
(n_rb_sb * hopping_cfg->n_sb);
INFO("n_prb_tilde: %d, n_vrb_tilde: %d, n_rb_sb: %d, n_sb: %d\n",
n_prb_tilde,
n_vrb_tilde,
n_rb_sb,
hopping_cfg->n_sb);
if (hopping_cfg->n_sb > 1) {
n_prb_tilde += (hopping_cfg->hopping_offset - 1) / 2 + 1;
}
}
grant->n_prb_tilde[slot] = n_prb_tilde;
}
}
result_type operator()(first_argument_type x, second_argument_type y, third_argument_type z) const
{
return f_m(x, y, z);
}
void display(const model_type& x) { f_m(x); }
inline dest_type convert(const source_type& x) const { return f_m(x); }
