int main(int argc, char **argv) { ra_pdsch_t ra_dl; int i; int frame_cnt; int ret; dci_location_t locations[MAX_CANDIDATES]; uint32_t nof_locations; dci_msg_t dci_msg; if (argc < 3) { usage(argv[0]); exit(-1); } parse_args(argc,argv); if (base_init()) { fprintf(stderr, "Error initializing memory\n"); exit(-1); } ret = -1; frame_cnt = 0; do { filesource_read(&fsrc, input_buffer, flen); INFO("Reading %d samples sub-frame %d\n", flen, frame_cnt); lte_fft_run_sf(&fft, input_buffer, fft_buffer); /* Get channel estimates for each port */ chest_dl_estimate(&chest, fft_buffer, ce, frame_cnt %10); uint16_t crc_rem = 0; if (pdcch_extract_llr(&pdcch, fft_buffer, ce, chest_dl_get_noise_estimate(&chest), frame_cnt %10, cfi)) { fprintf(stderr, "Error extracting LLRs\n"); return -1; } if (rnti == SIRNTI) { INFO("Initializing common search space for SI-RNTI\n",0); nof_locations = pdcch_common_locations(&pdcch, locations, MAX_CANDIDATES, cfi); } else { INFO("Initializing user-specific search space for RNTI: 0x%x\n", rnti); nof_locations = pdcch_ue_locations(&pdcch, locations, MAX_CANDIDATES, frame_cnt %10, cfi, rnti); } for (i=0;i<nof_locations && crc_rem != rnti;i++) { if (pdcch_decode_msg(&pdcch, &dci_msg, &locations[i], dci_format, &crc_rem)) { fprintf(stderr, "Error decoding DCI msg\n"); return -1; } } if (crc_rem == rnti) { dci_msg_type_t type; if (dci_msg_get_type(&dci_msg, &type, cell.nof_prb, rnti, 1234)) { fprintf(stderr, "Can't get DCI message type\n"); exit(-1); } printf("MSG %d: ",i); dci_msg_type_fprint(stdout, type); switch(type.type) { case PDSCH_SCHED: bzero(&ra_dl, sizeof(ra_pdsch_t)); if (dci_msg_unpack_pdsch(&dci_msg, &ra_dl, cell.nof_prb, rnti != SIRNTI)) { fprintf(stderr, "Can't unpack PDSCH message\n"); } else { ra_pdsch_fprint(stdout, &ra_dl, cell.nof_prb); if (ra_dl.alloc_type == alloc_type2 && ra_dl.type2_alloc.mode == t2_loc && ra_dl.type2_alloc.riv == 11 && ra_dl.rv_idx == 0 && ra_dl.harq_process == 0 && ra_dl.mcs_idx == 2) { printf("This is the file signal.1.92M.amar.dat\n"); ret = 0; } } break; default: fprintf(stderr, "Unsupported message type\n"); break; } } frame_cnt++; } while (frame_cnt <= max_frames); base_free(); exit(ret); }
int main(int argc, char **argv) { dci_msg_t msg; ra_pdsch_t ra_dl; int len, rlen; int nof_prb; int nwords; int i; char *y; if (argc < 3) { usage(argv[0]); exit(-1); } nof_prb = atoi(argv[1]); len = atoi(argv[2]); nwords = (len - 1) / 32 + 1; if (argc < 3 + nwords) { usage(argv[0]); exit(-1); } y = msg.data; rlen = 0; unsigned int x; for (i = 0; i < nwords; i++) { x = strtoul(argv[i + 3], NULL, 16); if (len - rlen < 32) { bit_pack(x, &y, len - rlen); } else { bit_pack(x, &y, 32); } } printf("DCI message len %d:\n", len); for (i = 0; i < len; i++) { printf("%d, ", msg.data[i]); } printf("\n"); dci_msg_type_t dci_type; msg.nof_bits = len; if (dci_msg_get_type(&msg, &dci_type, nof_prb, SIRNTI, 1234)) { fprintf(stderr, "Can't obtain DCI message type\n"); exit(-1); } printf("\n"); printf("Message type:"); dci_msg_type_fprint(stdout, dci_type); switch (dci_type.type) { case PDSCH_SCHED: bzero(&ra_dl, sizeof(ra_pdsch_t)); dci_msg_unpack_pdsch(&msg, &ra_dl, nof_prb, false); ra_pdsch_fprint(stdout, &ra_dl, nof_prb); break; default: printf("Error expected PDSCH\n"); exit(-1); } printf("\n"); }