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openairinterface5g/openair2/RRC/LITE/rrc_common.c
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/*******************************************************************************
OpenAirInterface
Copyright(c) 1999 - 2014 Eurecom
OpenAirInterface is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
OpenAirInterface is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with OpenAirInterface.The full GNU General Public License is
included in this distribution in the file called "COPYING". If not,
see <http://www.gnu.org/licenses/>.
Contact Information
OpenAirInterface Admin: openair_admin@eurecom.fr
OpenAirInterface Tech : openair_tech@eurecom.fr
OpenAirInterface Dev : openair4g-devel@eurecom.fr
Address : Eurecom, Campus SophiaTech, 450 Route des Chappes, CS 50193 - 06904 Biot Sophia Antipolis cedex, FRANCE
*******************************************************************************/
/*! \file rrc_common.c
* \brief rrc common procedures for eNB and UE
* \author Navid Nikaein and Raymond Knopp
* \date 2011 - 2014
* \version 1.0
* \company Eurecom
* \email: navid.nikaein@eurecom.fr and raymond.knopp@eurecom.fr
*/
#include "defs.h"
#include "extern.h"
#include "LAYER2/MAC/extern.h"
#include "COMMON/openair_defs.h"
#include "COMMON/platform_types.h"
#include "RRC/L2_INTERFACE/openair_rrc_L2_interface.h"
#include "LAYER2/RLC/rlc.h"
#include "COMMON/mac_rrc_primitives.h"
#include "UTIL/LOG/log.h"
#include "asn1_msg.h"
#include "pdcp.h"
#define DEBUG_RRC 1
extern eNB_MAC_INST *eNB_mac_inst;
extern UE_MAC_INST *UE_mac_inst;
extern mui_t rrc_eNB_mui;
//configure BCCH & CCCH Logical Channels and associated rrc_buffers, configure associated SRBs
void openair_rrc_on(module_id_t Mod_id, const eNB_flag_t eNB_flag) {
unsigned short i;
if (eNB_flag == 1) {
LOG_I(RRC, "[eNB %d] OPENAIR RRC IN....\n", Mod_id);
rrc_config_buffer (&eNB_rrc_inst[Mod_id].SI, BCCH, 1);
eNB_rrc_inst[Mod_id].SI.Active = 1;
rrc_config_buffer (&eNB_rrc_inst[Mod_id].Srb0, CCCH, 1);
eNB_rrc_inst[Mod_id].Srb0.Active = 1;
}
else {
LOG_I(RRC, "[UE %d] OPENAIR RRC IN....\n", Mod_id);
for (i = 0; i < NB_eNB_INST; i++) {
LOG_D(RRC, "[RRC][UE %d] Activating CCCH (eNB %d)\n", Mod_id, i);
UE_rrc_inst[Mod_id].Srb0[i].Srb_id = CCCH;
memcpy (&UE_rrc_inst[Mod_id].Srb0[i].Lchan_desc[0], &CCCH_LCHAN_DESC, LCHAN_DESC_SIZE);
memcpy (&UE_rrc_inst[Mod_id].Srb0[i].Lchan_desc[1], &CCCH_LCHAN_DESC, LCHAN_DESC_SIZE);
rrc_config_buffer (&UE_rrc_inst[Mod_id].Srb0[i], CCCH, 1);
UE_rrc_inst[Mod_id].Srb0[i].Active = 1;
}
}
}
int rrc_init_global_param(void) {
//#ifdef USER_MODE
// Rrc_xface = (RRC_XFACE*)malloc16(sizeof(RRC_XFACE));
//#endif //USRE_MODE
// Rrc_xface->openair_rrc_top_init = openair_rrc_top_init;
// Rrc_xface->openair_rrc_eNB_init = openair_rrc_eNB_init;
// Rrc_xface->openair_rrc_UE_init = openair_rrc_ue_init;
// Rrc_xface->mac_rrc_data_ind = mac_rrc_data_ind;
//Rrc_xface->mac_rrc_data_req = mac_rrc_data_req;
// Rrc_xface->rrc_data_indP = (void *)rlcrrc_data_ind;
// Rrc_xface->rrc_rx_tx = rrc_rx_tx;
// Rrc_xface->mac_rrc_meas_ind = mac_rrc_meas_ind;
// Rrc_xface->get_rrc_status = get_rrc_status;
//Rrc_xface->rrc_get_status = ...
// Mac_rlc_xface->mac_out_of_sync_ind=mac_out_of_sync_ind;
#ifndef NO_RRM
// Rrc_xface->fn_rrc=fn_rrc;
#endif
// LOG_D(RRC, "[RRC]INIT_GLOBAL_PARAM: Mac_rlc_xface %p, rrc_rlc_register %p,rlcrrc_data_ind%p\n",Mac_rlc_xface,Mac_rlc_xface->rrc_rlc_register_rrc,rlcrrc_data_ind);
/*
if((Mac_rlc_xface==NULL) || (Mac_rlc_xface->rrc_rlc_register_rrc==NULL) ||
(rlcrrc_data_ind==NULL)) {
LOG_E(RRC,"Data structured is not initialized \n");
return -1;
}
*/
rrc_rlc_register_rrc (rlcrrc_data_ind, NULL); //register with rlc
DCCH_LCHAN_DESC.transport_block_size = 4;
DCCH_LCHAN_DESC.max_transport_blocks = 16;
DCCH_LCHAN_DESC.Delay_class = 1;
DTCH_DL_LCHAN_DESC.transport_block_size = 52;
DTCH_DL_LCHAN_DESC.max_transport_blocks = 20;
DTCH_DL_LCHAN_DESC.Delay_class = 1;
DTCH_UL_LCHAN_DESC.transport_block_size = 52;
DTCH_UL_LCHAN_DESC.max_transport_blocks = 20;
DTCH_UL_LCHAN_DESC.Delay_class = 1;
Rlc_info_um.rlc_mode = RLC_MODE_UM;
Rlc_info_um.rlc.rlc_um_info.timer_reordering = 5;
Rlc_info_um.rlc.rlc_um_info.sn_field_length = 10;
Rlc_info_um.rlc.rlc_um_info.is_mXch = 0;
//Rlc_info_um.rlc.rlc_um_info.sdu_discard_mode=16;
Rlc_info_am_config.rlc_mode = RLC_MODE_AM;
Rlc_info_am_config.rlc.rlc_am_info.max_retx_threshold = 50;
Rlc_info_am_config.rlc.rlc_am_info.poll_pdu = 8;
Rlc_info_am_config.rlc.rlc_am_info.poll_byte = 1000;
Rlc_info_am_config.rlc.rlc_am_info.t_poll_retransmit = 15;
Rlc_info_am_config.rlc.rlc_am_info.t_reordering = 50;
Rlc_info_am_config.rlc.rlc_am_info.t_status_prohibit = 10;
#ifndef NO_RRM
if (L3_xface_init ())
return (-1);
#endif
return 0;
}
#ifndef NO_RRM
/*------------------------------------------------------------------------------*/
int L3_xface_init(void) {
/*------------------------------------------------------------------------------*/
int ret = 0;
#ifdef USER_MODE
int sock;
LOG_D(RRC, "[L3_XFACE] init de l'interface \n");
if (open_socket (&S_rrc, RRC_RRM_SOCK_PATH, RRM_RRC_SOCK_PATH, 0) == -1)
return (-1);
if (S_rrc.s == -1) {
return (-1);
}
socket_setnonblocking (S_rrc.s);
msg ("Interface Connected... RRM-RRC\n");
return 0;
#else
ret=rtf_create(RRC2RRM_FIFO,32768);
if (ret < 0) {
msg("[openair][MAC][INIT] Cannot create RRC2RRM fifo %d (ERROR %d)\n",RRC2RRM_FIFO,ret);
return(-1);
}
else {
msg("[openair][MAC][INIT] Created RRC2RRM fifo %d\n",RRC2RRM_FIFO);
rtf_reset(RRC2RRM_FIFO);
}
ret=rtf_create(RRM2RRC_FIFO,32768);
if (ret < 0) {
msg("[openair][MAC][INIT] Cannot create RRM2RRC fifo %d (ERROR %d)\n",RRM2RRC_FIFO,ret);
return(-1);
}
else {
msg("[openair][MAC][INIT] Created RRC2RRM fifo %d\n",RRM2RRC_FIFO);
rtf_reset(RRM2RRC_FIFO);
}
return(0);
#endif
}
#endif
void rrc_config_buffer(SRB_INFO *Srb_info, uint8_t Lchan_type, uint8_t Role) {
Srb_info->Rx_buffer.payload_size = 0;
Srb_info->Tx_buffer.payload_size = 0;
}
/*------------------------------------------------------------------------------*/
void openair_rrc_top_init(int eMBMS_active, char *uecap_xer, uint8_t cba_group_active,uint8_t HO_active){
/*-----------------------------------------------------------------------------*/
module_id_t module_id;
OAI_UECapability_t *UECap = NULL;
// uint8_t dummy_buffer[100];
LOG_D(RRC, "[OPENAIR][INIT] Init function start: NB_UE_INST=%d, NB_eNB_INST=%d\n", NB_UE_INST, NB_eNB_INST);
if (NB_UE_INST > 0) {
UE_rrc_inst = (UE_RRC_INST*) malloc16(NB_UE_INST*sizeof(UE_RRC_INST));
memset (UE_rrc_inst, 0, NB_UE_INST * sizeof(UE_RRC_INST));
LOG_D(RRC, "ALLOCATE %d Bytes for UE_RRC_INST @ %p\n", (unsigned int)(NB_UE_INST*sizeof(UE_RRC_INST)), UE_rrc_inst);
// fill UE capability
UECap = fill_ue_capability (uecap_xer);
for (module_id = 0; module_id < NB_UE_INST; module_id++) {
UE_rrc_inst[module_id].UECap = UECap;
UE_rrc_inst[module_id].UECapability = UECap->sdu;
UE_rrc_inst[module_id].UECapability_size = UECap->sdu_size;
}
#ifdef Rel10
LOG_I(RRC,"[UE] eMBMS active state is %d \n", eMBMS_active);
for (module_id=0;module_id<NB_UE_INST;module_id++) {
UE_rrc_inst[module_id].MBMS_flag = (uint8_t)eMBMS_active;
}
#endif
}
else
UE_rrc_inst = NULL;
if (NB_eNB_INST > 0) {
eNB_rrc_inst = (eNB_RRC_INST*) malloc16(NB_eNB_INST*sizeof(eNB_RRC_INST));
memset (eNB_rrc_inst, 0, NB_eNB_INST * sizeof(eNB_RRC_INST));
LOG_I(RRC,"[eNB] handover active state is %d \n", HO_active);
for (module_id=0;module_id<NB_eNB_INST;module_id++) {
eNB_rrc_inst[module_id].HO_flag = (uint8_t)HO_active;
}
#ifdef Rel10
LOG_I(RRC,"[eNB] eMBMS active state is %d \n", eMBMS_active);
for (module_id=0;module_id<NB_eNB_INST;module_id++) {
eNB_rrc_inst[module_id].MBMS_flag = (uint8_t)eMBMS_active;
}
#endif
#ifdef CBA
for (module_id=0;module_id<NB_eNB_INST;module_id++) {
eNB_rrc_inst[module_id].num_active_cba_groups = cba_group_active;
}
#endif
#ifdef LOCALIZATION
/* later set this from xml or enb.config file*/
struct timeval ts; // time struct
gettimeofday(&ts, NULL); // get the current epoch timestamp
for (module_id=0;module_id<NB_eNB_INST;module_id++) {
eNB_rrc_inst[module_id].reference_timestamp_ms = ts.tv_sec * 1000 + ts.tv_usec / 1000;
initialize(&eNB_rrc_inst[module_id].loc_list);
eNB_rrc_inst[module_id].loc_type=0;
eNB_rrc_inst[module_id].aggregation_period_ms = 5000;
}
#endif
LOG_D(RRC,
"ALLOCATE %d Bytes for eNB_RRC_INST @ %p\n", (unsigned int)(NB_eNB_INST*sizeof(eNB_RRC_INST)), eNB_rrc_inst);
}
else
eNB_rrc_inst = NULL;
#ifndef NO_RRM
#ifndef USER_MODE
Header_buf=(char*)malloc16(sizeof(msg_head_t));
Data=(char*)malloc16(2400);
Header_read_idx=0;
Data_read_idx=0;
Header_size=sizeof(msg_head_t);
#endif //NO_RRM
Data_to_read = 0;
#endif //USER_MODE
}
void rrc_top_cleanup(void) {
if (NB_UE_INST > 0)
free (UE_rrc_inst);
if (NB_eNB_INST > 0)
free (eNB_rrc_inst);
}
void rrc_t310_expiration(const frame_t frameP, uint8_t Mod_id, uint8_t eNB_index) {
protocol_ctxt_t ctxt;
ctxt.enb_module_id = eNB_index;
ctxt.ue_module_id = Mod_id;
ctxt.frame = frameP;
ctxt.enb_flag = ENB_FLAG_NO;
if (UE_rrc_inst[Mod_id].Info[eNB_index].State != RRC_CONNECTED) {
LOG_D(RRC, "Timer 310 expired, going to RRC_IDLE\n");
UE_rrc_inst[Mod_id].Info[eNB_index].State = RRC_IDLE;
UE_rrc_inst[Mod_id].Info[eNB_index].UE_index = 0xffff;
UE_rrc_inst[Mod_id].Srb0[eNB_index].Rx_buffer.payload_size = 0;
UE_rrc_inst[Mod_id].Srb0[eNB_index].Tx_buffer.payload_size = 0;
UE_rrc_inst[Mod_id].Srb1[eNB_index].Srb_info.Rx_buffer.payload_size = 0;
UE_rrc_inst[Mod_id].Srb1[eNB_index].Srb_info.Tx_buffer.payload_size = 0;
if (UE_rrc_inst[Mod_id].Srb2[eNB_index].Active == 1) {
msg ("[RRC Inst %d] eNB_index %d, Remove RB %d\n ", Mod_id, eNB_index,
UE_rrc_inst[Mod_id].Srb2[eNB_index].Srb_info.Srb_id);
rrc_pdcp_config_req (&ctxt,
SRB_FLAG_YES,
CONFIG_ACTION_REMOVE,
UE_rrc_inst[Mod_id].Srb2[eNB_index].Srb_info.Srb_id,
0);
rrc_rlc_config_req (&ctxt,
SRB_FLAG_YES,
MBMS_FLAG_NO,
CONFIG_ACTION_REMOVE,
UE_rrc_inst[Mod_id].Srb2[eNB_index].Srb_info.Srb_id,
Rlc_info_um);
UE_rrc_inst[Mod_id].Srb2[eNB_index].Active = 0;
UE_rrc_inst[Mod_id].Srb2[eNB_index].Status = IDLE;
UE_rrc_inst[Mod_id].Srb2[eNB_index].Next_check_frame = 0;
}
}
else { // Restablishment procedure
LOG_D(RRC, "Timer 310 expired, trying RRCRestablishment ...\n");
}
}
RRC_status_t rrc_rx_tx(uint8_t Mod_id, const frame_t frameP, const eNB_flag_t eNB_flagP,uint8_t index,int CC_id){
uint8_t UE_id;
int32_t current_timestamp_ms, ref_timestamp_ms;
struct timeval ts;
if(eNB_flagP == 0) {
// check timers
if (UE_rrc_inst[Mod_id].Info[index].T300_active == 1) {
if ((UE_rrc_inst[Mod_id].Info[index].T300_cnt % 10) == 0)
LOG_D(RRC,
"[UE %d][RAPROC] Frame %d T300 Count %d ms\n", Mod_id, frameP, UE_rrc_inst[Mod_id].Info[index].T300_cnt);
if (UE_rrc_inst[Mod_id].Info[index].T300_cnt
== T300[UE_rrc_inst[Mod_id].sib2[index]->ue_TimersAndConstants.t300]) {
UE_rrc_inst[Mod_id].Info[index].T300_active = 0;
// ALLOW CCCH to be used
UE_rrc_inst[Mod_id].Srb0[index].Tx_buffer.payload_size = 0;
rrc_ue_generate_RRCConnectionRequest (Mod_id, frameP, index);
return (RRC_ConnSetup_failed);
}
UE_rrc_inst[Mod_id].Info[index].T300_cnt++;
}
if (UE_rrc_inst[Mod_id].sib2[index]) {
if (UE_rrc_inst[Mod_id].Info[index].N310_cnt
== N310[UE_rrc_inst[Mod_id].sib2[index]->ue_TimersAndConstants.n310]) {
UE_rrc_inst[Mod_id].Info[index].T310_active = 1;
}
}
else { // in case we have not received SIB2 yet
if (UE_rrc_inst[Mod_id].Info[index].N310_cnt == 100) {
UE_rrc_inst[Mod_id].Info[index].N310_cnt = 0;
return RRC_PHY_RESYNCH;
}
}
if (UE_rrc_inst[Mod_id].Info[index].T310_active == 1) {
if (UE_rrc_inst[Mod_id].Info[index].N311_cnt
== N311[UE_rrc_inst[Mod_id].sib2[index]->ue_TimersAndConstants.n311]) {
UE_rrc_inst[Mod_id].Info[index].T310_active = 0;
UE_rrc_inst[Mod_id].Info[index].N311_cnt = 0;
}
if ((UE_rrc_inst[Mod_id].Info[index].T310_cnt % 10) == 0)
LOG_D(RRC, "[UE %d] Frame %d T310 Count %d ms\n", Mod_id, frameP, UE_rrc_inst[Mod_id].Info[index].T310_cnt);
if (UE_rrc_inst[Mod_id].Info[index].T310_cnt == T310[UE_rrc_inst[Mod_id].sib2[index]->ue_TimersAndConstants.t310]) {
UE_rrc_inst[Mod_id].Info[index].T310_active = 0;
rrc_t310_expiration (frameP, Mod_id, index);
return (RRC_PHY_RESYNCH);
}
UE_rrc_inst[Mod_id].Info[index].T310_cnt++;
}
if (UE_rrc_inst[Mod_id].Info[index].T304_active==1) {
if ((UE_rrc_inst[Mod_id].Info[index].T304_cnt % 10) == 0)
LOG_D(RRC,"[UE %d][RAPROC] Frame %d T304 Count %d ms\n",Mod_id,frameP,
UE_rrc_inst[Mod_id].Info[index].T304_cnt);
if (UE_rrc_inst[Mod_id].Info[index].T304_cnt == 0) {
UE_rrc_inst[Mod_id].Info[index].T304_active = 0;
UE_rrc_inst[Mod_id].HandoverInfoUe.measFlag = 1;
LOG_E(RRC,"[UE %d] Handover failure..initiating connection re-establishment procedure... \n");
//Implement 36.331, section 5.3.5.6 here
return(RRC_Handover_failed);
}
UE_rrc_inst[Mod_id].Info[index].T304_cnt--;
}
// Layer 3 filtering of RRC measurements
if (UE_rrc_inst[Mod_id].QuantityConfig[0] != NULL) {
ue_meas_filtering(Mod_id,frameP,index);
}
ue_measurement_report_triggering(Mod_id,frameP,index);
if (UE_rrc_inst[Mod_id].Info[0].handoverTarget > 0)
LOG_I(RRC,"[UE %d] Frame %d : RRC handover initiated\n", Mod_id, frameP);
if((UE_rrc_inst[Mod_id].Info[index].State == RRC_HO_EXECUTION) &&
(UE_rrc_inst[Mod_id].HandoverInfoUe.targetCellId != 0xFF)) {
UE_rrc_inst[Mod_id].Info[index].State= RRC_IDLE;
return(RRC_HO_STARTED);
}
}
else { // eNB
check_handovers(Mod_id,frameP);
// counetr, and get the value and aggregate
#ifdef LOCALIZATION
/* for the localization, only primary CC_id might be relevant*/
gettimeofday(&ts, NULL);
current_timestamp_ms = ts.tv_sec * 1000 + ts.tv_usec / 1000;
ref_timestamp_ms = eNB_rrc_inst[Mod_id].reference_timestamp_ms;
for (UE_id=0; UE_id < NUMBER_OF_UE_MAX; UE_id++) {
if ((current_timestamp_ms - ref_timestamp_ms > eNB_rrc_inst[Mod_id].aggregation_period_ms) &&
rrc_get_estimated_ue_distance(Mod_id,frameP,UE_id, CC_id,eNB_rrc_inst[Mod_id].loc_type) != -1) {
LOG_D(LOCALIZE, " RRC [UE/id %d -> eNB/id %d] timestamp %d frame %d estimated r = %f\n",
UE_id,
Mod_id,
current_timestamp_ms,
frameP,
rrc_get_estimated_ue_distance(Mod_id,frameP,UE_id, CC_id,eNB_rrc_inst[Mod_id].loc_type));
LOG_D(LOCALIZE, " RRC status %d\n", eNB_rrc_inst[Mod_id].Info.UE[UE_id].Status);
push_front(&eNB_rrc_inst[Mod_id].loc_list,
rrc_get_estimated_ue_distance(Mod_id,frameP,UE_id, CC_id,eNB_rrc_inst[Mod_id].loc_type));
eNB_rrc_inst[Mod_id].reference_timestamp_ms = current_timestamp_ms;
}
}
#endif
}
return (RRC_OK);
}
long binary_search_int(int elements[], long numElem, int value) {
long first, last, middle, search = -1;
first = 0;
last = numElem-1;
middle = (first+last)/2;
if(value < elements[0])
return first;
if(value > elements[last])
return last;
while (first <= last) {
if (elements[middle] < value)
first = middle+1;
else if (elements[middle] == value) {
search = middle+1;
break;
}
else
last = middle -1;
middle = (first+last)/2;
}
if (first > last)
LOG_E(RRC,"Error in binary search!");
return search;
}
/* This is a binary search routine which operates on an array of floating
point numbers and returns the index of the range the value lies in
Used for RSRP and RSRQ measurement mapping. Can potentially be used for other things
*/
long binary_search_float(float elements[], long numElem, float value) {
long first, last, middle;
first = 0;
last = numElem-1;
middle = (first+last)/2;
if(value <= elements[0])
return first;
if(value >= elements[last])
return last;
while (last - first > 1) {
if (elements[middle] > value)
last = middle;
else
first = middle;
middle = (first+last)/2;
}
if (first < 0 || first >= numElem)
LOG_E(RRC,"\n Error in binary search float!");
return first;
}
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