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reestablishment initiation

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This commit is contained in:
francescomani
2024-03-13 17:48:45 +01:00
parent f03601ed8e
commit 8c2dc19470
6 changed files with 158 additions and 62 deletions
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openair2/LAYER2/NR_MAC_UE/config_ue.c
+31 -12
View File
@@ -1355,21 +1355,40 @@ static void configure_common_BWP_ul(NR_UE_MAC_INST_t *mac, int bwp_id, NR_BWP_Up
}
void nr_rrc_mac_config_req_reset(module_id_t module_id,
NR_UE_MAC_reset_cause_t reset_cause)
NR_UE_MAC_reset_cause_t cause)
{
NR_UE_MAC_INST_t *mac = get_mac_inst(module_id);
reset_mac_inst(mac);
reset_ra(&mac->ra);
release_mac_configuration(mac);
nr_ue_init_mac(mac);
// Sending to PHY a request to resync
// with no target cell ID
if (reset_cause != DETACH) {
mac->synch_request.Mod_id = module_id;
mac->synch_request.CC_id = 0;
mac->synch_request.synch_req.target_Nid_cell = -1;
mac->if_module->synch_request(&mac->synch_request);
switch (cause) {
case GO_TO_IDLE:
reset_ra(&mac->ra);
release_mac_configuration(mac, cause);
nr_ue_init_mac(mac);
nr_ue_mac_default_configs(mac);
// new sync but no target cell id -> -1
nr_ue_send_synch_request(mac, module_id, 0, -1);
break;
case DETACH:
reset_ra(&mac->ra);
reset_mac_inst(mac);
nr_ue_reset_sync_state(mac);
release_mac_configuration(mac, cause);
break;
case T300_EXPIRY:
reset_mac_inst(mac);
reset_ra(&mac->ra);
mac->state = UE_SYNC; // still in sync but need to restart RA
break;
case RE_ESTABLISHMENT:
reset_mac_inst(mac);
nr_ue_mac_default_configs(mac);
nr_ue_reset_sync_state(mac);
release_mac_configuration(mac, cause);
// new sync with old cell ID (re-establishment on the same cell)
nr_ue_send_synch_request(mac, module_id, 0, mac->physCellId);
break;
default:
AssertFatal(false, "Invalid MAC reset cause %d\n", cause);
}
}
openair2/LAYER2/NR_MAC_UE/mac_proto.h
+5 -1
View File
@@ -205,7 +205,8 @@ NR_UE_MAC_INST_t *get_mac_inst(module_id_t module_id);
void reset_mac_inst(NR_UE_MAC_INST_t *nr_mac);
void reset_ra(RA_config_t *ra);
void release_mac_configuration(NR_UE_MAC_INST_t *mac);
void release_mac_configuration(NR_UE_MAC_INST_t *mac,
NR_UE_MAC_reset_cause_t cause);
/**\brief called at each slot, slot length based on numerology. now use u=0, scs=15kHz, slot=1ms
performs BSR/SR/PHR procedures, random access procedure handler and DLSCH/ULSCH procedures.
@@ -450,6 +451,9 @@ void nr_get_prach_resources(NR_UE_MAC_INST_t *mac,
void prepare_msg4_feedback(NR_UE_MAC_INST_t *mac, int pid, int ack_nack);
void configure_initial_pucch(PUCCH_sched_t *pucch, int res_ind);
void nr_ue_reset_sync_state(NR_UE_MAC_INST_t *mac);
void nr_ue_send_synch_request(NR_UE_MAC_INST_t *mac, module_id_t module_id, int cc_id, int cell_id);
void init_RA(NR_UE_MAC_INST_t *mac,
NR_PRACH_RESOURCES_t *prach_resources,
NR_RACH_ConfigCommon_t *nr_rach_ConfigCommon,
openair2/LAYER2/NR_MAC_UE/main_ue_nr.c
+81 -47
View File
@@ -56,12 +56,11 @@ void send_srb0_rrc(int ue_id, const uint8_t *sdu, sdu_size_t sdu_len, void *data
void nr_ue_init_mac(NR_UE_MAC_INST_t *mac)
{
LOG_I(NR_MAC, "[UE%d] Initializing MAC\n", mac->ue_id);
mac->first_sync_frame = -1;
nr_ue_reset_sync_state(mac);
mac->get_sib1 = false;
mac->get_otherSI = false;
mac->phy_config_request_sent = false;
memset(&mac->phy_config, 0, sizeof(mac->phy_config));
mac->state = UE_NOT_SYNC;
mac->si_window_start = -1;
mac->servCellIndex = 0;
mac->harq_ACK_SpatialBundlingPUCCH = false;
@@ -69,6 +68,9 @@ void nr_ue_init_mac(NR_UE_MAC_INST_t *mac)
mac->uecap_maxMIMO_PDSCH_layers = 0;
mac->uecap_maxMIMO_PUSCH_layers_cb = 0;
mac->uecap_maxMIMO_PUSCH_layers_nocb = 0;
mac->p_Max = INT_MIN;
mac->p_Max_alt = INT_MIN;
reset_mac_inst(mac);
memset(&mac->ssb_measurements, 0, sizeof(mac->ssb_measurements));
memset(&mac->ul_time_alignment, 0, sizeof(mac->ul_time_alignment));
@@ -76,35 +78,32 @@ void nr_ue_init_mac(NR_UE_MAC_INST_t *mac)
memset(&mac->ssb_list[i], 0, sizeof(mac->ssb_list[i]));
memset(&mac->prach_assoc_pattern[i], 0, sizeof(mac->prach_assoc_pattern[i]));
}
for (int k = 0; k < NR_MAX_HARQ_PROCESSES; k++) {
mac->ul_harq_info[k].last_ndi = -1; // initialize to invalid value
mac->dl_harq_info[k].last_ndi = -1; // initialize to invalid value
}
}
void nr_ue_mac_default_configs(NR_UE_MAC_INST_t *mac)
{
// default values as defined in 38.331 sec 9.2.2
mac->scheduling_info.retxBSR_Timer = NR_BSR_Config__retxBSR_Timer_sf10240;
mac->scheduling_info.periodicBSR_Timer = NR_BSR_Config__periodicBSR_Timer_infinity;
mac->scheduling_info.SR_COUNTER = 0;
mac->scheduling_info.SR_pending = 0;
mac->scheduling_info.sr_ProhibitTimer = 0;
mac->scheduling_info.sr_ProhibitTimer_Running = 0;
mac->scheduling_info.sr_id = -1; // invalid init value
mac->scheduling_info.retxBSR_Timer = NR_BSR_Config__retxBSR_Timer_sf80;
mac->scheduling_info.periodicBSR_Timer = NR_BSR_Config__periodicBSR_Timer_sf10;
mac->scheduling_info.periodicPHR_Timer = NR_PHR_Config__phr_PeriodicTimer_sf10;
mac->scheduling_info.prohibitPHR_Timer = NR_PHR_Config__phr_ProhibitTimer_sf10;
}
// set init value 0xFFFF, make sure periodic timer and retx time counters are NOT active, after bsr transmission set the value
// configured by the NW.
mac->scheduling_info.periodicBSR_SF = NR_MAC_UE_BSR_TIMER_NOT_RUNNING;
mac->scheduling_info.retxBSR_SF = NR_MAC_UE_BSR_TIMER_NOT_RUNNING;
mac->BSR_reporting_active = NR_BSR_TRIGGER_NONE;
void nr_ue_send_synch_request(NR_UE_MAC_INST_t *mac, module_id_t module_id, int cc_id, int cell_id)
{
// Sending to PHY a request to resync
mac->synch_request.Mod_id = module_id;
mac->synch_request.CC_id = cc_id;
mac->synch_request.synch_req.target_Nid_cell = cell_id;
mac->if_module->synch_request(&mac->synch_request);
}
for (int i = 0; i < NR_MAX_NUM_LCID; i++) {
LOG_D(NR_MAC, "Applying default logical channel config for LCGID %d\n", i);
mac->scheduling_info.lc_sched_info[i].LCID_buffer_with_data = false;
mac->scheduling_info.lc_sched_info[i].LCID_buffer_remain = 0;
mac->scheduling_info.lc_sched_info[i].Bj = 0;
}
void nr_ue_reset_sync_state(NR_UE_MAC_INST_t *mac)
{
// reset synchornization status
mac->first_sync_frame = -1;
mac->state = UE_NOT_SYNC;
mac->ra.ra_state = RA_UE_IDLE;
}
NR_UE_MAC_INST_t *nr_l2_init_ue(int nb_inst)
@@ -144,14 +143,16 @@ void reset_mac_inst(NR_UE_MAC_INST_t *nr_mac)
{
// MAC reset according to 38.321 Section 5.12
nr_ue_mac_default_configs(nr_mac);
// initialize Bj for each logical channel to zero
for (int i = 0; i < NR_MAX_NUM_LCID; i++)
// TODO reset also other status variables of LC, is this ok?
for (int i = 0; i < NR_MAX_NUM_LCID; i++) {
nr_mac->scheduling_info.lc_sched_info[i].Bj = 0;
nr_mac->scheduling_info.lc_sched_info[i].LCID_buffer_with_data = false;
nr_mac->scheduling_info.lc_sched_info[i].LCID_buffer_remain = 0;
}
// stop all running timers
// TODO
// TODO stop all running timers
nr_timer_stop(&nr_mac->ra.contention_resolution_timer);
// consider all timeAlignmentTimers as expired and perform the corresponding actions in clause 5.2
// TODO
@@ -171,10 +172,16 @@ void reset_mac_inst(NR_UE_MAC_INST_t *nr_mac)
free_and_zero(nr_mac->ra.Msg3_buffer);
// cancel any triggered Scheduling Request procedure
// Done in default config
nr_mac->scheduling_info.SR_COUNTER = 0;
nr_mac->scheduling_info.SR_pending = 0;
nr_mac->scheduling_info.sr_ProhibitTimer = 0;
nr_mac->scheduling_info.sr_ProhibitTimer_Running = 0;
nr_mac->scheduling_info.sr_id = -1; // invalid init value
// cancel any triggered Buffer Status Reporting procedure
// Done in default config
nr_mac->scheduling_info.periodicBSR_SF = NR_MAC_UE_BSR_TIMER_NOT_RUNNING;
nr_mac->scheduling_info.retxBSR_SF = NR_MAC_UE_BSR_TIMER_NOT_RUNNING;
nr_mac->BSR_reporting_active = NR_BSR_TRIGGER_NONE;
// cancel any triggered Power Headroom Reporting procedure
// TODO PHR not implemented yet
@@ -194,12 +201,24 @@ void reset_mac_inst(NR_UE_MAC_INST_t *nr_mac)
// TODO beam failure procedure not implemented
}
void release_mac_configuration(NR_UE_MAC_INST_t *mac)
void release_mac_configuration(NR_UE_MAC_INST_t *mac,
NR_UE_MAC_reset_cause_t cause)
{
asn1cFreeStruc(asn_DEF_NR_MIB, mac->mib);
asn1cFreeStruc(asn_DEF_NR_SI_SchedulingInfo, mac->si_SchedulingInfo);
asn1cFreeStruc(asn_DEF_NR_TDD_UL_DL_ConfigCommon, mac->tdd_UL_DL_ConfigurationCommon);
NR_UE_ServingCell_Info_t *sc = &mac->sc_info;
// if cause is Re-establishment, release spCellConfig only
if (cause == GO_TO_IDLE) {
asn1cFreeStruc(asn_DEF_NR_MIB, mac->mib);
asn1cFreeStruc(asn_DEF_NR_SearchSpace, mac->search_space_zero);
asn1cFreeStruc(asn_DEF_NR_ControlResourceSet, mac->coreset0);
asn1cFreeStruc(asn_DEF_NR_SI_SchedulingInfo, mac->si_SchedulingInfo);
asn1cFreeStruc(asn_DEF_NR_TDD_UL_DL_ConfigCommon, mac->tdd_UL_DL_ConfigurationCommon);
for (int i = 0; i < mac->lc_ordered_list.count; i++) {
nr_lcordered_info_t *lc_info = mac->lc_ordered_list.array[i];
asn_sequence_del(&mac->lc_ordered_list, i, 0);
free(lc_info);
}
}
asn1cFreeStruc(asn_DEF_NR_CrossCarrierSchedulingConfig, sc->crossCarrierSchedulingConfig);
asn1cFreeStruc(asn_DEF_NR_SRS_CarrierSwitching, sc->carrierSwitching);
asn1cFreeStruc(asn_DEF_NR_UplinkConfig, sc->supplementaryUplink);
@@ -218,20 +237,35 @@ void release_mac_configuration(NR_UE_MAC_INST_t *mac)
mac->current_DL_BWP = NULL;
mac->current_UL_BWP = NULL;
for (int i = 0; i < mac->dl_BWPs.count; i++)
release_dl_BWP(mac, i);
for (int i = 0; i < mac->ul_BWPs.count; i++)
release_ul_BWP(mac, i);
asn1cFreeStruc(asn_DEF_NR_SearchSpace, mac->search_space_zero);
asn1cFreeStruc(asn_DEF_NR_ControlResourceSet, mac->coreset0);
for (int i = 0; i < mac->lc_ordered_list.count; i++) {
nr_lcordered_info_t *lc_info = mac->lc_ordered_list.array[i];
asn_sequence_del(&mac->lc_ordered_list, i, 0);
free(lc_info);
// in case of re-establishment we don't need to release initial BWP config common
int first_bwp_rel = 0; // first BWP to release
if (cause == RE_ESTABLISHMENT) {
first_bwp_rel = 1;
// release dedicated BWP0 config
NR_UE_DL_BWP_t *bwp = mac->dl_BWPs.array[0];
NR_BWP_PDCCH_t *pdcch = &mac->config_BWP_PDCCH[0];
for (int i = 0; pdcch->list_Coreset.count; i++)
asn_sequence_del(&pdcch->list_Coreset, i, 1);
for (int i = 0; pdcch->list_SS.count; i++)
asn_sequence_del(&pdcch->list_SS, i, 1);
asn1cFreeStruc(asn_DEF_NR_PDSCH_Config, bwp->pdsch_Config);
NR_UE_UL_BWP_t *ubwp = mac->ul_BWPs.array[0];
asn1cFreeStruc(asn_DEF_NR_PUCCH_Config, ubwp->pucch_Config);
asn1cFreeStruc(asn_DEF_NR_SRS_Config, ubwp->srs_Config);
asn1cFreeStruc(asn_DEF_NR_PUSCH_Config, ubwp->pusch_Config);
mac->current_DL_BWP = bwp;
mac->current_UL_BWP = ubwp;
mac->sc_info.initial_dl_BWPSize = bwp->BWPSize;
mac->sc_info.initial_dl_BWPStart = bwp->BWPStart;
mac->sc_info.initial_ul_BWPSize = ubwp->BWPSize;
mac->sc_info.initial_ul_BWPStart = ubwp->BWPStart;
}
for (int i = first_bwp_rel; i < mac->dl_BWPs.count; i++)
release_dl_BWP(mac, i);
for (int i = first_bwp_rel; i < mac->ul_BWPs.count; i++)
release_ul_BWP(mac, i);
memset(&mac->ssb_measurements, 0, sizeof(mac->ssb_measurements));
memset(&mac->csirs_measurements, 0, sizeof(mac->csirs_measurements));
memset(&mac->ul_time_alignment, 0, sizeof(mac->ul_time_alignment));
openair2/RRC/NR_UE/rrc_UE.c
+39
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@@ -1601,6 +1601,45 @@ static void nr_rrc_ue_process_ueCapabilityEnquiry(NR_UE_RRC_INST_t *rrc, NR_UECa
}
}
void nr_rrc_initiate_rrcReestablishment(NR_UE_RRC_INST_t *rrc,
const int gnb_id)
{
NR_UE_Timers_Constants_t *timers = &rrc->timers_and_constants;
rrcPerNB_t *rrcNB = rrc->perNB + gnb_id;
// reset timers to SIB1 as part of release of spCellConfig
// it needs to be done before handling timers
set_rlf_sib1_timers_and_constants(timers, rrcNB->SInfo.sib1);
// stop timer T310, if running
nr_timer_stop(&timers->T310);
// stop timer T304, if running
nr_timer_stop(&timers->T304);
// start timer T311
nr_timer_start(&timers->T311);
// suspend all RBs, except SRB0
for (int i = 1; i < 4; i++) {
if (rrc->Srb[i] == RB_ESTABLISHED) {
rrc->Srb[i] = RB_SUSPENDED;
nr_pdcp_suspend_srb(rrc->ue_id, i);
}
}
for (int i = 1; i <= MAX_DRBS_PER_UE; i++) {
if (get_DRB_status(rrc, i) == RB_ESTABLISHED) {
set_DRB_status(rrc, i, RB_SUSPENDED);
nr_pdcp_suspend_drb(rrc->ue_id, i);
}
}
// release the MCG SCell(s), if configured
// no SCell configured in our implementation
rrc->nrRrcState = RRC_STATE_REESTABLISHMENT;
// reset MAC
// release spCellConfig, if configured
// perform cell selection in accordance with the cell selection process
nr_rrc_mac_config_req_reset(rrc->ue_id, RE_ESTABLISHMENT);
}
static void nr_rrc_ue_generate_rrcReestablishmentComplete(NR_RRCReestablishment_t *rrcReestablishment)
{
uint8_t buffer[RRC_BUFFER_SIZE] = {0};
openair2/RRC/NR_UE/rrc_defs.h
+1 -2
View File
@@ -85,8 +85,7 @@ typedef enum Rrc_State_NR_e {
RRC_STATE_INACTIVE_NR,
RRC_STATE_CONNECTED_NR,
RRC_STATE_DETACH_NR,
RRC_STATE_FIRST_NR = RRC_STATE_IDLE_NR,
RRC_STATE_LAST_NR = RRC_STATE_CONNECTED_NR,
RRC_STATE_REESTABLISHMENT
} Rrc_State_NR_t;
typedef enum requested_SI_List_e {
openair2/RRC/NR_UE/rrc_proto.h
+1
View File
@@ -87,6 +87,7 @@ void nr_rrc_going_to_IDLE(NR_UE_RRC_INST_t *rrc,
void nr_mac_rrc_ra_ind(const module_id_t mod_id, int frame, bool success);
void nr_mac_rrc_msg3_ind(const module_id_t mod_id, const int rnti);
void set_rlf_sib1_timers_and_constants(NR_UE_Timers_Constants_t *tac, NR_SIB1_t *sib1);
/**\brief RRC UE task.
\param void *args_p Pointer on arguments to start the task. */