Implementation of RRC NR_Paging message at gNB

2022-12-20 15:37:26 +01:00
parent cfe698eb70
commit 44d309a69d
19 changed files with 463 additions and 15 deletions
@@ -28,4 +28,70 @@
 * \email: navid.nikaein@eurecom.fr, bing-kai.hong@eurecom.fr
 * \note
 * \warning
- */
+ */
+#include "f1ap_common.h"
+#include "f1ap_du_paging.h"
+#include "conversions.h"
+#include "asn1_conversions.h"
+#include "openair2/RRC/LTE/rrc_proto.h"
+
+int DU_handle_Paging(instance_t       instance,
+                     uint32_t         assoc_id,
+                     uint32_t         stream,
+                     F1AP_F1AP_PDU_t *pdu) {
+  F1AP_Paging_t *paging;
+  F1AP_PagingIEs_t *ie;
+  long tmsi;
+  uint8_t pagingdrx;
+  uint8_t  *fiveg_tmsi_buf = NULL;
+
+  DevAssert(pdu);
+
+  if ( LOG_DEBUGFLAG(DEBUG_ASN1) ) {
+    xer_fprint(stdout, &asn_DEF_F1AP_F1AP_PDU, pdu);
+  }
+
+  paging = &pdu->choice.initiatingMessage->value.choice.Paging;
+  // get UEIdentityIndexValue
+  F1AP_FIND_PROTOCOLIE_BY_ID(F1AP_PagingIEs_t, ie, paging,
+                             F1AP_ProtocolIE_ID_id_UEIdentityIndexValue, true);
+
+  LOG_D(F1AP, "indexLength10 %d\n", BIT_STRING_to_uint32(&ie->value.choice.UEIdentityIndexValue.choice.indexLength10));
+
+  // get PagingIdentity
+  F1AP_FIND_PROTOCOLIE_BY_ID(F1AP_PagingIEs_t, ie, paging,
+                             F1AP_ProtocolIE_ID_id_PagingIdentity, true);
+
+  if(ie != NULL){
+    fiveg_tmsi_buf = ie->value.choice.PagingIdentity.choice.cNUEPagingIdentity->choice.fiveG_S_TMSI.buf;
+
+    tmsi = ((long)fiveg_tmsi_buf[0] << 40) +
+           ((long)fiveg_tmsi_buf[1] << 32) +
+           (fiveg_tmsi_buf[2] << 24) +
+           (fiveg_tmsi_buf[3] << 16) +
+           (fiveg_tmsi_buf[4] << 8) +
+           fiveg_tmsi_buf[5];
+
+    LOG_D(F1AP, "tmsi %ld\n", tmsi);
+  }
+
+  // get PagingDRX
+  F1AP_FIND_PROTOCOLIE_BY_ID(F1AP_PagingIEs_t, ie, paging,
+                             F1AP_ProtocolIE_ID_id_PagingDRX, true);
+
+  if(ie != NULL) {
+    pagingdrx = (uint8_t)ie->value.choice.PagingDRX;
+  }
+
+  LOG_D(F1AP, "pagingdrx %u\n", pagingdrx);
+
+  // get PagingCell_List
+  F1AP_FIND_PROTOCOLIE_BY_ID(F1AP_PagingIEs_t, ie, paging,
+                             F1AP_ProtocolIE_ID_id_PagingCell_List, true);
+
+  for (uint8_t CC_id = 0; CC_id < MAX_NUM_CCs; CC_id++) {
+    rrc_gNB_generate_pcch_msg((uint32_t)tmsi, pagingdrx, instance, CC_id);
+  }
+
+  return 0;
+}