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rrc inactivity timer created, S1 ue context release request sent on timeout, timer set at RRC connection complete reception

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This commit is contained in:
Louis Adrien Dufrene
2018-10-25 16:03:38 +02:00
parent 2966cdf1c0
commit a321e160cf
3 changed files with 62 additions and 26 deletions
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openair2/RRC/LTE/L2_interface.c
+4 -3
View File
@@ -279,6 +279,9 @@ mac_rrc_data_ind(
}
//------------------------------------------------------------------------------
/*
* Get RRC status (Connected, Idle...) of UE from RNTI
*/
int
mac_eNB_get_rrc_status(
const module_id_t Mod_idP,
@@ -287,9 +290,7 @@ mac_eNB_get_rrc_status(
//------------------------------------------------------------------------------
{
struct rrc_eNB_ue_context_s* ue_context_p = NULL;
ue_context_p = rrc_eNB_get_ue_context(
RC.rrc[Mod_idP],
rntiP);
ue_context_p = rrc_eNB_get_ue_context(RC.rrc[Mod_idP], rntiP);
if (ue_context_p != NULL) {
return(ue_context_p->ue_context.Status);
openair2/RRC/LTE/rrc_defs.h
+8 -5
View File
@@ -387,10 +387,10 @@ typedef enum SL_TRIGGER_e {
#define RRC_TRANSACTION_IDENTIFIER_NUMBER 3
typedef struct {
unsigned short transport_block_size; /*!< \brief Minimum PDU size in bytes provided by RLC to MAC layer interface */
unsigned short max_transport_blocks; /*!< \brief Maximum PDU size in bytes provided by RLC to MAC layer interface */
unsigned long Guaranteed_bit_rate; /*!< \brief Guaranteed Bit Rate (average) to be offered by MAC layer scheduling*/
unsigned long Max_bit_rate; /*!< \brief Maximum Bit Rate that can be offered by MAC layer scheduling*/
unsigned short transport_block_size; /*!< \brief Minimum PDU size in bytes provided by RLC to MAC layer interface */
unsigned short max_transport_blocks; /*!< \brief Maximum PDU size in bytes provided by RLC to MAC layer interface */
unsigned long Guaranteed_bit_rate; /*!< \brief Guaranteed Bit Rate (average) to be offered by MAC layer scheduling*/
unsigned long Max_bit_rate; /*!< \brief Maximum Bit Rate that can be offered by MAC layer scheduling*/
uint8_t Delay_class; /*!< \brief Delay class offered by MAC layer scheduling*/
uint8_t Target_bler; /*!< \brief Target Average Transport Block Error rate*/
uint8_t Lchan_t; /*!< \brief Logical Channel Type (BCCH,CCCH,DCCH,DTCH_B,DTCH,MRBCH)*/
@@ -552,7 +552,7 @@ typedef struct eNB_RRC_UE_s {
CipheringAlgorithm_r12_t ciphering_algorithm;
e_SecurityAlgorithmConfig__integrityProtAlgorithm integrity_algorithm;
uint8_t Status;
uint8_t Status; // RRC status, type enum UE_STATE_t
rnti_t rnti;
uint64_t random_ue_identity;
@@ -599,6 +599,9 @@ typedef struct eNB_RRC_UE_s {
uint32_t ue_release_timer_thres_rrc;
uint32_t ue_reestablishment_timer;
uint32_t ue_reestablishment_timer_thres;
/* RRC inactivity timer: on timeout, should release RRC connection for inactivity on all E-RABs */
uint32_t ue_rrc_inactivity_timer;
uint32_t ue_rrc_inactivity_timer_thres;
uint8_t e_rab_release_command_flag;
int8_t reestablishment_xid;
} eNB_RRC_UE_t;
openair2/RRC/LTE/rrc_eNB.c
+50 -18
View File
@@ -862,13 +862,13 @@ rrc_eNB_free_UE(
rnti);
if (EPC_MODE_ENABLED) {
if((ue_context_pP->ue_context.ul_failure_timer >= 20000) && (mac_eNB_get_rrc_status(enb_mod_idP,rnti) >= RRC_CONNECTED)) {
LOG_I(RRC, "[eNB %d] S1AP_UE_CONTEXT_RELEASE_REQ sent for RNTI %x\n",
if((ue_context_pP->ue_context.ul_failure_timer >= 20000) && (mac_eNB_get_rrc_status(enb_mod_idP, rnti) >= RRC_CONNECTED)) {
LOG_I(RRC, "[eNB %d] S1AP_UE_CONTEXT_RELEASE_REQ sent for RNTI %x, cause 21, radio connection with ue lost\n",
enb_mod_idP,
rnti);
rrc_eNB_send_S1AP_UE_CONTEXT_RELEASE_REQ(enb_mod_idP, ue_context_pP, S1AP_CAUSE_RADIO_NETWORK, 21);
// send cause 21: connection with ue lost
// send cause 21: radio connection with ue lost
/* From 3GPP 36300v10 p129 : 19.2.2.2.2 S1 UE Context Release Request (eNB triggered)
* If the E-UTRAN internal reason is a radio link failure detected in the eNB, the eNB shall wait a sufficient time before
* triggering the S1 UE Context Release Request procedure in order to allow the UE to perform the NAS recovery
@@ -877,7 +877,18 @@ rrc_eNB_free_UE(
return;
}
// TODO : add here cause ul inactivity
if((ue_context_pP->ue_context.ue_rrc_inactivity_timer >= ue_context_pP->ue_context.ue_rrc_inactivity_timer_thres) &&
(mac_eNB_get_rrc_status(enb_mod_idP, rnti) >= RRC_CONNECTED)) {
LOG_I(RRC, "[eNB %d] S1AP_UE_CONTEXT_RELEASE_REQ sent for RNTI %x, cause 20, user inactivity\n",
enb_mod_idP,
rnti);
rrc_eNB_send_S1AP_UE_CONTEXT_RELEASE_REQ(enb_mod_idP, ue_context_pP, S1AP_CAUSE_RADIO_NETWORK, 20);
// send cause 20: user inactivity
return;
}
}
// add UE info to freeList
@@ -1012,11 +1023,14 @@ void release_UE_in_freeList(module_id_t mod_id)
}
//-----------------------------------------------------------------------------
/*
* Process the rrc connection setup complete message from UE (SRB1 Active)
*/
void
rrc_eNB_process_RRCConnectionSetupComplete(
const protocol_ctxt_t* const ctxt_pP,
rrc_eNB_ue_context_t* ue_context_pP,
RRCConnectionSetupComplete_r8_IEs_t * rrcConnectionSetupComplete
const protocol_ctxt_t *const ctxt_pP,
rrc_eNB_ue_context_t *ue_context_pP,
RRCConnectionSetupComplete_r8_IEs_t *rrcConnectionSetupComplete
)
//-----------------------------------------------------------------------------
{
@@ -1024,22 +1038,19 @@ rrc_eNB_process_RRCConnectionSetupComplete(
PROTOCOL_RRC_CTXT_UE_FMT" [RAPROC] Logical Channel UL-DCCH, " "processing RRCConnectionSetupComplete from UE (SRB1 Active)\n",
PROTOCOL_RRC_CTXT_UE_ARGS(ctxt_pP));
ue_context_pP->ue_context.Srb1.Active=1;
ue_context_pP->ue_context.Srb1.Active = 1;
ue_context_pP->ue_context.Status = RRC_CONNECTED;
ue_context_pP->ue_context.ue_rrc_inactivity_timer = 1; // set rrc inactivity when UE goes into RRC_CONNECTED
T(T_ENB_RRC_CONNECTION_SETUP_COMPLETE, T_INT(ctxt_pP->module_id), T_INT(ctxt_pP->frame),
T_INT(ctxt_pP->subframe), T_INT(ctxt_pP->rnti));
if (EPC_MODE_ENABLED == 1) {
// Forward message to S1AP layer
rrc_eNB_send_S1AP_NAS_FIRST_REQ(
ctxt_pP,
ue_context_pP,
rrcConnectionSetupComplete);
rrc_eNB_send_S1AP_NAS_FIRST_REQ(ctxt_pP, ue_context_pP, rrcConnectionSetupComplete);
} else {
// RRC loop back (no S1AP), send SecurityModeCommand to UE
rrc_eNB_generate_SecurityModeCommand(
ctxt_pP,
ue_context_pP);
// rrc_eNB_generate_UECapabilityEnquiry(enb_mod_idP,frameP,ue_mod_idP);
rrc_eNB_generate_SecurityModeCommand(ctxt_pP, ue_context_pP);
}
}
@@ -5364,6 +5375,11 @@ rrc_eNB_generate_RRCConnectionReconfiguration_handover(
*/
//-----------------------------------------------------------------------------
/*
* TODO: * add function description
* * add ue_rrc_inactivity_timer set
* * format the function correctly
*/
void
rrc_eNB_process_RRCConnectionReconfigurationComplete(
const protocol_ctxt_t* const ctxt_pP,
@@ -6868,7 +6884,6 @@ if (ue_context_p->ue_context.nb_of_modify_e_rabs > 0) {
ctxt_pP,
ue_context_p,
&ul_dcch_msg->message.choice.c1.choice.rrcConnectionSetupComplete.criticalExtensions.choice.c1.choice.rrcConnectionSetupComplete_r8);
ue_context_p->ue_context.Status = RRC_CONNECTED;
LOG_I(RRC, PROTOCOL_RRC_CTXT_UE_FMT" UE State = RRC_CONNECTED \n",
PROTOCOL_RRC_CTXT_UE_ARGS(ctxt_pP));
@@ -7901,6 +7916,18 @@ rrc_rx_tx(
} // end if (rrc_release_info.num_UEs > 0)
pthread_mutex_unlock(&rrc_release_freelist);
if (ue_context_p->ue_context.ue_rrc_inactivity_timer > 0) {
ue_context_p->ue_context.ue_rrc_inactivity_timer++;
if (ue_context_p->ue_context.ue_rrc_inactivity_timer >= ue_context_p->ue_context.ue_rrc_inactivity_timer_thres) {
LOG_I(RRC, "Removing UE %x instance because of rrc_inactivity_timer timeout\n",
ue_context_p->ue_context.rnti);
ue_to_be_removed = ue_context_p;
break; // break RB_FOREACH
}
}
if (ue_context_p->ue_context.ue_reestablishment_timer > 0) {
ue_context_p->ue_context.ue_reestablishment_timer++;
@@ -7935,7 +7962,8 @@ rrc_rx_tx(
} // end RB_FOREACH
if (ue_to_be_removed) {
if (ue_to_be_removed->ue_context.ul_failure_timer >= 20000) {
if ((ue_to_be_removed->ue_context.ul_failure_timer >= 20000) ||
(ue_to_be_removed->ue_context.ue_rrc_inactivity_timer >= ue_to_be_removed->ue_context.ue_rrc_inactivity_timer_thres)) {
ue_to_be_removed->ue_context.ue_release_timer_s1 = 1;
ue_to_be_removed->ue_context.ue_release_timer_thres_s1 = 100;
ue_to_be_removed->ue_context.ue_release_timer = 0;
@@ -7947,6 +7975,10 @@ rrc_rx_tx(
if (ue_to_be_removed->ue_context.ul_failure_timer >= 20000) {
ue_to_be_removed->ue_context.ul_failure_timer = 0;
}
if (ue_to_be_removed->ue_context.ue_rrc_inactivity_timer >= ue_to_be_removed->ue_context.ue_rrc_inactivity_timer_thres) {
ue_to_be_removed->ue_context.ue_rrc_inactivity_timer = 0; //reset timer after S1 command UE context release request is sent
}
}
#ifdef RRC_LOCALIZATION