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Implemented M2AP managing procedures at eNB (ENB_APP)

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-M2 register against MCE (Multicast Control Entity)
	-Basic M2AP control procedures developed (eNB<-M2AP->MCE)

	ACKNOWLEDGEMENT:
 	1. This commit was developed at Vicomtech (https://www.vicomtech.org) under UE project CDN-X-ALL: "CDN edge-cloud computing for efficient cache and reliable streaming aCROSS Aggregated unicast-multicast LinkS"
 	2. Project funded by Fed4FIRE+ OC5 (https://www.fed4fire.eu)

	Signed-off-by: Javier Morgade <javier.morgade@ieee.org>
This commit is contained in:
Javier Morgade
2019-09-14 13:19:00 +02:00
parent f76cc82448
commit bcf42ca2a5
7 changed files with 904 additions and 0 deletions
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openair2/ENB_APP/enb_app.c
+224
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@@ -46,6 +46,8 @@
# include "x2ap_eNB.h"
# include "x2ap_messages_types.h"
# include "m2ap_eNB.h"
# include "m2ap_messages_types.h"
# define X2AP_ENB_REGISTER_RETRY_DELAY 10
#include "openair1/PHY/INIT/phy_init.h"
@@ -58,7 +60,87 @@ extern RAN_CONTEXT_t RC;
#include "targets/RT/USER/lte-softmodem.h"
/*************************** ENB M2AP **************************/
//static uint32_t eNB_app_register_MBMS_STA(ngran_node_t node_type,uint32_t enb_id_start, uint32_t enb_id_end) {
// uint32_t enb_id;
// //MessageDef *msg_p;
// uint32_t register_enb_pending = 0;
//
// for (enb_id = enb_id_start; (enb_id < enb_id_end) ; enb_id++) {
// {
//
// //msg_p = itti_alloc_new_message (TASK_ENB_APP, S1AP_REGISTER_ENB_REQ);
// //RCconfig_S1(msg_p, enb_id);
//
// if (enb_id == 0) RCconfig_gtpu();
//
// //LOG_I(ENB_APP,"default drx %d\n",((S1AP_REGISTER_ENB_REQ(msg_p)).default_drx));
//
// //LOG_I(ENB_APP,"[eNB %d] eNB_app_register via S1AP for instance %d\n", enb_id, ENB_MODULE_ID_TO_INSTANCE(enb_id));
// //itti_send_msg_to_task (TASK_S1AP, ENB_MODULE_ID_TO_INSTANCE(enb_id), msg_p);
//
// register_enb_pending++;
// }
// }
//
// return register_enb_pending;
//}
//*****end M2AP ****/
static uint32_t eNB_app_register_m2(uint32_t enb_id_start, uint32_t enb_id_end) {
uint32_t enb_id;
MessageDef *msg_p;
uint32_t register_enb_m2_pending = 0;
// msg_p = itti_alloc_new_message (TASK_ENB_APP,MESSAGE_TEST );
// itti_send_msg_to_task (TASK_M2AP_MCE, ENB_MODULE_ID_TO_INSTANCE(enb_id), msg_p);
LOG_D(ENB_APP,"Register ...\n");
for (enb_id = enb_id_start; (enb_id < enb_id_end) ; enb_id++) {
{
msg_p = itti_alloc_new_message (TASK_ENB_APP, M2AP_REGISTER_ENB_REQ);
RCconfig_M2(msg_p, enb_id);
itti_send_msg_to_task (TASK_M2AP_ENB, ENB_MODULE_ID_TO_INSTANCE(enb_id), msg_p);
register_enb_m2_pending++;
}
}
return register_enb_m2_pending;
}
/*************************** M2AP ENB handle **********************************/
static uint32_t eNB_app_handle_m2ap_mbms_scheduling_information(instance_t instance){
//uint32_t mce_id=0;
MessageDef *msg_p;
msg_p = itti_alloc_new_message (TASK_ENB_APP, M2AP_MBMS_SCHEDULING_INFORMATION_RESP);
itti_send_msg_to_task (TASK_M2AP_ENB, ENB_MODULE_ID_TO_INSTANCE(instance), msg_p);
return 0;
}
static uint32_t eNB_app_handle_m2ap_mbms_session_start_req(instance_t instance){
//uint32_t mce_id=0;
MessageDef *msg_p;
msg_p = itti_alloc_new_message (TASK_ENB_APP, M2AP_MBMS_SESSION_START_RESP);
itti_send_msg_to_task (TASK_M2AP_ENB, ENB_MODULE_ID_TO_INSTANCE(instance), msg_p);
return 0;
}
static uint32_t eNB_app_handle_m2ap_mbms_session_stop_req(instance_t instance){
//uint32_t mce_id=0;
MessageDef *msg_p;
msg_p = itti_alloc_new_message (TASK_ENB_APP, M2AP_MBMS_SESSION_STOP_RESP);
itti_send_msg_to_task (TASK_M2AP_ENB, ENB_MODULE_ID_TO_INSTANCE(instance), msg_p);
return 0;
}
static uint32_t eNB_app_handle_m2ap_mbms_session_update_req(instance_t instance){
//uint32_t mce_id=0;
MessageDef *msg_p;
msg_p = itti_alloc_new_message (TASK_ENB_APP, M2AP_MBMS_SESSION_UPDATE_RESP);
itti_send_msg_to_task (TASK_M2AP_ENB, ENB_MODULE_ID_TO_INSTANCE(instance), msg_p);
return 0;
}
//// end M2AP ENB handle **********************************/
/*------------------------------------------------------------------------------*/
@@ -129,6 +211,9 @@ void *eNB_app_task(void *args_p) {
uint32_t x2_register_enb_pending = 0;
uint32_t x2_registered_enb = 0;
long x2_enb_register_retry_timer_id;
uint32_t m2_register_enb_pending = 0;
uint32_t m2_registered_enb = 0;
long m2_enb_register_retry_timer_id;
MessageDef *msg_p = NULL;
instance_t instance;
int result;
@@ -147,6 +232,22 @@ void *eNB_app_task(void *args_p) {
x2_register_enb_pending = eNB_app_register_x2 (enb_id_start, enb_id_end);
}
/* Try to register each eNB with MCE each other */
if (is_m2ap_eNB_enabled() /*&& !NODE_IS_DU(RC.rrc[0]->node_type)*/) {
//eNB_app_register_MBMS_STA(RC.rrc[0]->node_type, enb_id_start, enb_id_end);
//m2_register_enb_pending = eNB_app_register_m2 (enb_id_start, enb_id_end);
if (timer_setup (5, 0, TASK_ENB_APP, INSTANCE_DEFAULT, TIMER_ONE_SHOT,
NULL, &m2_enb_register_retry_timer_id) < 0) {
//LOG_E(ENB_APP, " Can not start eNB register retry timer, use \"sleep\" instead!\n");
//sleep(ENB_REGISTER_RETRY_DELAY);
/* Restart the registration process */
//registered_enb = 0;
//register_enb_pending = eNB_app_register (RC.rrc[0]->node_type,enb_id_start, enb_id_end);
}
}
do {
// Wait for a message
itti_receive_msg (TASK_ENB_APP, &msg_p);
@@ -275,6 +376,12 @@ void *eNB_app_task(void *args_p) {
}
} /* if (EPC_MODE_ENABLED) */
if(TIMER_HAS_EXPIRED (msg_p).timer_id == m2_enb_register_retry_timer_id) {
LOG_I(ENB_APP, " Received %s: timer_id %ld M2 register\n", ITTI_MSG_NAME (msg_p), TIMER_HAS_EXPIRED(msg_p).timer_id);
m2_register_enb_pending = eNB_app_register_m2 (enb_id_start, enb_id_end);
}
break;
case X2AP_DEREGISTERED_ENB_IND:
@@ -319,6 +426,123 @@ void *eNB_app_task(void *args_p) {
break;
case M2AP_DEREGISTERED_ENB_IND:
LOG_W(ENB_APP, "[eNB %d] Received %s: associated eNB %d\n", instance, ITTI_MSG_NAME (msg_p),
M2AP_DEREGISTERED_ENB_IND(msg_p).nb_m2);
/* TODO handle recovering of registration */
break;
case M2AP_REGISTER_ENB_CNF:
LOG_W(ENB_APP, "[eNB %d] Received %s: associated eNB %d\n", instance, ITTI_MSG_NAME (msg_p),
M2AP_REGISTER_ENB_CNF(msg_p).nb_m2);
DevAssert(m2_register_enb_pending > 0);
m2_register_enb_pending--;
/* Check if at least eNB is registered with one target eNB */
if (M2AP_REGISTER_ENB_CNF(msg_p).nb_m2 > 0) {
m2_registered_enb++;
}
/* Check if all register eNB requests have been processed */
if (m2_register_enb_pending == 0) {
if (m2_registered_enb == enb_nb) {
/* If all eNB are registered, start RRC HO task */
} else {
uint32_t m2_not_associated = enb_nb - m2_registered_enb;
LOG_W(ENB_APP, " %d eNB %s not associated with the target\n",
m2_not_associated, m2_not_associated > 1 ? "are" : "is");
// timer to retry
/* Restart the eNB registration process in ENB_REGISTER_RETRY_DELAY seconds */
//if (timer_setup (X2AP_ENB_REGISTER_RETRY_DELAY, 0, TASK_ENB_APP,
// INSTANCE_DEFAULT, TIMER_ONE_SHOT, NULL,
// &x2_enb_register_retry_timer_id) < 0) {
// LOG_E(ENB_APP, " Can not start eNB X2AP register: retry timer, use \"sleep\" instead!\n");
// sleep(X2AP_ENB_REGISTER_RETRY_DELAY);
// /* Restart the registration process */
// x2_registered_enb = 0;
// x2_register_enb_pending = eNB_app_register_x2 (enb_id_start, enb_id_end);
//}
}
}
break;
case M2AP_SETUP_RESP:
LOG_I(ENB_APP,"M2AP_SETUP_RESP RESPONSE received\n");
// AssertFatal(NODE_IS_DU(RC.rrc[0]->node_type), "Should not have received F1AP_REGISTER_ENB_CNF in CU/eNB\n");
// LOG_I(ENB_APP, "Received %s: associated ngran_eNB_CU %s with %d cells to activate\n", ITTI_MSG_NAME (msg_p),
// F1AP_SETUP_RESP(msg_p).gNB_CU_name,F1AP_SETUP_RESP(msg_p).num_cells_to_activate);
//
// handle_f1ap_setup_resp(&F1AP_SETUP_RESP(msg_p));
// DevAssert(register_enb_pending > 0);
// register_enb_pending--;
// /* Check if at least eNB is registered with one MME */
// if (F1AP_SETUP_RESP(msg_p).num_cells_to_activate > 0) {
// registered_enb++;
// }
// /* Check if all register eNB requests have been processed */
// if (register_enb_pending == 0) {
// if (registered_enb == enb_nb) {
// /* If all eNB cells are registered, start L2L1 task */
// MessageDef *msg_init_p;
// msg_init_p = itti_alloc_new_message (TASK_ENB_APP, INITIALIZE_MESSAGE);
// itti_send_msg_to_task (TASK_L2L1, INSTANCE_DEFAULT, msg_init_p);
// } else {
// LOG_W(ENB_APP, " %d eNB not associated with a MME, retrying registration in %d seconds ...\n",
// enb_nb - registered_enb, ENB_REGISTER_RETRY_DELAY);
// /* Restart the eNB registration process in ENB_REGISTER_RETRY_DELAY seconds */
// if (timer_setup (ENB_REGISTER_RETRY_DELAY, 0, TASK_ENB_APP, INSTANCE_DEFAULT, TIMER_ONE_SHOT,
// NULL, &enb_register_retry_timer_id) < 0) {
// LOG_E(ENB_APP, " Can not start eNB register retry timer, use \"sleep\" instead!\n");
// sleep(ENB_REGISTER_RETRY_DELAY);
// /* Restart the registration process */
// registered_enb = 0;
// register_enb_pending = eNB_app_register (RC.rrc[0]->node_type,enb_id_start, enb_id_end);//, enb_properties_p);
// }
// }
// }
break;
case M2AP_MBMS_SCHEDULING_INFORMATION:
LOG_I(ENB_APP,"M2AP_SCHEDULING_INFORMATION received\n");
eNB_app_handle_m2ap_mbms_scheduling_information(ITTI_MESSAGE_GET_INSTANCE(msg_p));
break;
case M2AP_MBMS_SESSION_START_REQ:
LOG_I(ENB_APP,"M2AP_MBMS_SESSION_START_REQ received\n");
eNB_app_handle_m2ap_mbms_session_start_req(ITTI_MESSAGE_GET_INSTANCE(msg_p));
break;
case M2AP_MBMS_SESSION_STOP_REQ:
LOG_I(ENB_APP,"M2AP_MBMS_SESSION_STOP_REQ received\n");
eNB_app_handle_m2ap_mbms_session_stop_req(ITTI_MESSAGE_GET_INSTANCE(msg_p));
break;
case M2AP_RESET:
LOG_I(ENB_APP,"M2AP_RESET received\n");
break;
case M2AP_ENB_CONFIGURATION_UPDATE_ACK:
LOG_I(ENB_APP,"M2AP_ENB_CONFIGURATION_UPDATE_ACK received\n");
break;
case M2AP_ENB_CONFIGURATION_UPDATE_FAILURE:
LOG_I(ENB_APP,"M2AP_ENB_CONFIGURATION_UPDATE_FAILURE received\n");
break;
case M2AP_ERROR_INDICATION:
LOG_I(ENB_APP,"M2AP_MBMS_SESSION_UPDATE_REQ\n");
eNB_app_handle_m2ap_mbms_session_update_req(ITTI_MESSAGE_GET_INSTANCE(msg_p));
break;
case M2AP_MBMS_SERVICE_COUNTING_REQ:
LOG_I(ENB_APP,"M2AP_MBMS_SERVICE_COUNTING_REQ\n");
break;
case M2AP_MCE_CONFIGURATION_UPDATE:
LOG_I(ENB_APP,"M2AP_MCE_CONFIGURATION_UPDATE\n");
break;
default:
LOG_E(ENB_APP, "Received unexpected message %s\n", ITTI_MSG_NAME (msg_p));
break;