Guido Casati
dca7e6c95d
Inside of passing the RRCReconfiguration buffer, call RRCReconfiguration message generation inside the F1 callback. This will simplify the code in the rrc_CU_process_ue_context_setup_response() function once the N2 handover case is introduced. In rrc_CU_process_ue_context_setup_response(), with presence of the HO context, the HO ACK callback is called only once and depending on the type of HO it will do either RRCReconfiguration for F1 and HandoverCommand for N2.
79 lines
3.2 KiB
C
79 lines
3.2 KiB
C
/* Licensed to the OpenAirInterface (OAI) Software Alliance under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership.
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* The OpenAirInterface Software Alliance licenses this file to You under
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* the OAI Public License, Version 1.1 (the "License"); you may not use this file
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* except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.openairinterface.org/?page_id=698
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*-------------------------------------------------------------------------------
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* For more information about the OpenAirInterface (OAI) Software Alliance:
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* contact@openairinterface.org
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*/
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#ifndef RRC_GNB_MOBILITY_H_
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#define RRC_GNB_MOBILITY_H_
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#include <stdint.h>
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#include "common/utils/ds/byte_array.h"
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/* forward declarations */
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typedef struct gNB_RRC_INST_s gNB_RRC_INST;
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typedef struct gNB_RRC_UE_s gNB_RRC_UE_t;
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typedef struct nr_rrc_du_container_t nr_rrc_du_container_t;
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typedef struct NR_CellGroupConfig NR_CellGroupConfig_t;
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typedef void (*ho_cancel_t)(gNB_RRC_INST *rrc, gNB_RRC_UE_t *ue);
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typedef struct nr_ho_source_cu {
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/// pointer to the (source) DU structure
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const nr_rrc_du_container_t *du;
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/// (source) DU UE ID; in F1, the DU UE ID will change to the new (target) DU
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/// UE ID during handover, and the CU needs to keep track of this in case of
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/// reestablishment
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uint32_t du_ue_id;
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/// old (source) RNTI (to recognize a UE during reestablishment)
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rnti_t old_rnti;
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/// old (source) CellGroupConfig (to send the cellGroupConfig in case of
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/// reestablishment)
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NR_CellGroupConfig_t *old_cellGroupConfig;
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/// function pointer to announce the handover cancellation, e.g.,
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/// reestablishment
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ho_cancel_t ho_cancel;
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} nr_ho_source_cu_t;
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/* acknowledgement of handover request. buf+len is the RRC Reconfiguration */
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typedef void (*ho_req_ack_t)(gNB_RRC_INST *rrc, gNB_RRC_UE_t *ue);
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typedef void (*ho_success_t)(gNB_RRC_INST *rrc, gNB_RRC_UE_t *ue);
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typedef struct nr_ho_target_cu {
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/// pointer to the (target) DU structure
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const nr_rrc_du_container_t *du;
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/// (target) DU UE ID; the (source) DU UE ID will change to the new (target)
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/// DU UE ID after sending a reconfiguration, which is later than when
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/// receiving this ID
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uint32_t du_ue_id;
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/// new (target) RNTI (as for du_ue_id)
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rnti_t new_rnti;
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/// function pointer to announce handover request acknowledgment
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ho_req_ack_t ho_req_ack;
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/// function pointer to announce handover success
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ho_success_t ho_success;
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} nr_ho_target_cu_t;
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typedef struct nr_handover_context_s {
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nr_ho_source_cu_t *source;
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nr_ho_target_cu_t *target;
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} nr_handover_context_t;
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void nr_rrc_trigger_f1_ho(gNB_RRC_INST *rrc, gNB_RRC_UE_t *ue, nr_rrc_du_container_t *source_du, nr_rrc_du_container_t *target_du);
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void nr_rrc_finalize_ho(gNB_RRC_UE_t *ue);
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#endif /* RRC_GNB_MOBILITY_H_ */
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