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Trigger first DL Data Delivery status from DU to report the buffer availability to the CU

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-After that no DL traffic is getting blocked at the Accelleran CU for low values of throughput
-Remaining to remove the hardcoded value of buffer availability and report the actual value from the DU.
This commit is contained in:
Raymond Knopp
2022-03-29 12:17:37 +02:00
parent 6abb1e362d
commit a77c1d3202
4 changed files with 99 additions and 1 deletions
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openair2/COMMON/gtpv1_u_messages_def.h
+2 -1
View File
@@ -27,4 +27,5 @@ MESSAGE_DEF(GTPV1U_ENB_END_MARKER_REQ, MESSAGE_PRIORITY_MED, gtpv1u_enb_end
MESSAGE_DEF(GTPV1U_ENB_END_MARKER_IND, MESSAGE_PRIORITY_MED, gtpv1u_enb_end_marker_ind_t, Gtpv1uEndMarkerInd)
MESSAGE_DEF(GTPV1U_REQ, MESSAGE_PRIORITY_MED, Gtpv1uReq, gtpv1uReq)
MESSAGE_DEF(GTPV1U_GNB_TUNNEL_DATA_REQ, MESSAGE_PRIORITY_MED, gtpv1u_gnb_tunnel_data_req_t, NRGtpv1uTunnelDataReq)
MESSAGE_DEF(GTPV1U_GNB_TUNNEL_DATA_REQ, MESSAGE_PRIORITY_MED, gtpv1u_gnb_tunnel_data_req_t, NRGtpv1uTunnelDataReq)
MESSAGE_DEF(GTPV1U_DU_BUFFER_REPORT_REQ, MESSAGE_PRIORITY_MED, gtpv1u_DU_buffer_report_req_t, NRGtpv1uBufferReportReq)
openair2/COMMON/gtpv1_u_messages_types.h
+8
View File
@@ -39,6 +39,8 @@
#define GTPV1U_GNB_TUNNEL_DATA_REQ(mSGpTR) (mSGpTR)->ittiMsg.NRGtpv1uTunnelDataReq
#define GTPV1U_DU_BUFFER_REPORT_REQ(mSGpTR) (mSGpTR)->ittiMsg.NRGtpv1uBufferReportReq
#define GTPV1U_ALL_TUNNELS_TEID (teid_t)0xFFFFFFFF
typedef struct gtpv1u_enb_create_x2u_tunnel_req_s {
@@ -213,4 +215,10 @@ typedef struct gtpv1u_gnb_tunnel_data_req_s {
pdusessionid_t pdusession_id;
} gtpv1u_gnb_tunnel_data_req_t;
typedef struct gtpv1u_DU_buffer_report_req_s {
uint32_t buffer_availability;
rnti_t rnti;
pdusessionid_t pdusession_id;
} gtpv1u_DU_buffer_report_req_t;
#endif /* GTPV1_U_MESSAGES_TYPES_H_ */
openair2/RRC/NR/rrc_gNB.c
+15
View File
@@ -3487,6 +3487,21 @@ static void rrc_DU_process_ue_context_modification_request(MessageDef *msg_p, co
}
else if(req->ReconfigComplOutcome == RRCreconf_success){
LOG_I(NR_RRC, "CU reporting RRC Reconfiguration success \n");
if(ue_context_p->ue_context.DRB_configList!=NULL){
LOG_I(NR_RRC, "Send first DDD buffer status reporting towards the CU through an ITTI message to gtp-u \n");
uint8_t drb_id = ue_context_p->ue_context.DRB_configList->list.array[0]->drb_Identity;
rnti_t rnti = ue_context_p->ue_context.rnti;
LOG_I(NR_RRC, "Reported in DDD drb_id:%d, rnti:%d\n", drb_id, rnti);
MessageDef *msg = itti_alloc_new_message_sized(TASK_RRC_GNB, 0, GTPV1U_DU_BUFFER_REPORT_REQ,
sizeof(gtpv1u_gnb_tunnel_data_req_t));
gtpv1u_DU_buffer_report_req_t *req=&GTPV1U_DU_BUFFER_REPORT_REQ(msg);
req->pdusession_id = drb_id;
req->rnti = rnti;
req->buffer_availability = 1000000; //Hardcoding to be removed and read the actual RLC buffer availability instead
extern instance_t DUuniqInstance;
itti_send_msg_to_task(TASK_GTPV1_U, DUuniqInstance, msg);
}
}
/* Fill the UE context setup response ITTI message to send to F1AP */