/*
* Licensed to the OpenAirInterface (OAI) Software Alliance under one or more
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* this work for additional information regarding copyright ownership.
* The OpenAirInterface Software Alliance licenses this file to You under
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* except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.openairinterface.org/?page_id=698
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
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* See the License for the specific language governing permissions and
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*-------------------------------------------------------------------------------
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*/
/*! \file l2_nr_interface.c
* \brief layer 2 interface, used to support different RRC sublayer
* \author Raymond Knopp and Navid Nikaein, WEI-TAI CHEN
* \date 2010-2014, 2018
* \version 1.0
* \company Eurecom, NTUST
* \email: raymond.knopp@eurecom.fr, kroempa@gmail.com
*/
#include "platform_types.h"
#include "nr_rrc_defs.h"
#include "nr_rrc_extern.h"
#include "common/utils/LOG/log.h"
#include "pdcp.h"
#include "msc.h"
#include "common/ran_context.h"
#include "LAYER2/NR_MAC_COMMON/nr_mac_common.h"
#include "LAYER2/NR_MAC_COMMON/nr_mac_extern.h"
#include "intertask_interface.h"
#include "NR_MIB.h"
#include "NR_BCCH-BCH-Message.h"
extern RAN_CONTEXT_t RC;
int generate_pdcch_ConfigSIB1(NR_PDCCH_ConfigSIB1_t *pdcch_ConfigSIB1,
long ssbSubcarrierSpacing,
long subCarrierSpacingCommon,
channel_bandwidth_t min_channel_bw) {
nr_ssb_and_cset_mux_pattern_type_t mux_pattern = 0;
switch (ssbSubcarrierSpacing) {
case NR_SubcarrierSpacing_kHz15:
if (subCarrierSpacingCommon == NR_SubcarrierSpacing_kHz15) {
pdcch_ConfigSIB1->controlResourceSetZero = rand() % TABLE_38213_13_1_NUM_INDEXES;
mux_pattern = table_38213_13_1_c1[pdcch_ConfigSIB1->controlResourceSetZero];
} else if (subCarrierSpacingCommon == NR_SubcarrierSpacing_kHz30) {
pdcch_ConfigSIB1->controlResourceSetZero = rand() % TABLE_38213_13_2_NUM_INDEXES;
mux_pattern = table_38213_13_2_c1[pdcch_ConfigSIB1->controlResourceSetZero];
} else {
AssertFatal(true,"Invalid subCarrierSpacingCommon\n");
}
break;
case NR_SubcarrierSpacing_kHz30:
if (subCarrierSpacingCommon == NR_SubcarrierSpacing_kHz15) {
if ( (min_channel_bw == bw_5MHz) || (min_channel_bw == bw_10MHz) ) {
pdcch_ConfigSIB1->controlResourceSetZero = rand() % TABLE_38213_13_3_NUM_INDEXES;
mux_pattern = table_38213_13_3_c1[pdcch_ConfigSIB1->controlResourceSetZero];
} else if (min_channel_bw == bw_40MHz) {
pdcch_ConfigSIB1->controlResourceSetZero = rand() % TABLE_38213_13_5_NUM_INDEXES;
mux_pattern = table_38213_13_5_c1[pdcch_ConfigSIB1->controlResourceSetZero];
} else {
AssertFatal(true,"Invalid min_bandwidth\n");
}
} else if (subCarrierSpacingCommon == NR_SubcarrierSpacing_kHz30) {
if ( (min_channel_bw == bw_5MHz) || (min_channel_bw == bw_10MHz) ) {
pdcch_ConfigSIB1->controlResourceSetZero = rand() % TABLE_38213_13_4_NUM_INDEXES;
mux_pattern = table_38213_13_4_c1[pdcch_ConfigSIB1->controlResourceSetZero];
} else if (min_channel_bw == bw_40MHz) {
pdcch_ConfigSIB1->controlResourceSetZero = rand() % TABLE_38213_13_6_NUM_INDEXES;
mux_pattern = table_38213_13_6_c1[pdcch_ConfigSIB1->controlResourceSetZero];
} else {
AssertFatal(true,"Invalid min_bandwidth\n");
}
} else {
AssertFatal(true,"Invalid subCarrierSpacingCommon\n");
}
break;
case NR_SubcarrierSpacing_kHz120:
if (subCarrierSpacingCommon == NR_SubcarrierSpacing_kHz60) {
pdcch_ConfigSIB1->controlResourceSetZero = rand() % TABLE_38213_13_7_NUM_INDEXES;
mux_pattern = table_38213_13_7_c1[pdcch_ConfigSIB1->controlResourceSetZero];
} else if (subCarrierSpacingCommon == NR_SubcarrierSpacing_kHz120) {
pdcch_ConfigSIB1->controlResourceSetZero = rand() % TABLE_38213_13_8_NUM_INDEXES;
mux_pattern = table_38213_13_8_c1[pdcch_ConfigSIB1->controlResourceSetZero];
} else {
AssertFatal(true,"Invalid subCarrierSpacingCommon\n");
}
break;
case NR_SubcarrierSpacing_kHz240:
if (subCarrierSpacingCommon == NR_SubcarrierSpacing_kHz60) {
pdcch_ConfigSIB1->controlResourceSetZero = rand() % TABLE_38213_13_9_NUM_INDEXES;
mux_pattern = table_38213_13_9_c1[pdcch_ConfigSIB1->controlResourceSetZero];
} else if (subCarrierSpacingCommon == NR_SubcarrierSpacing_kHz120) {
pdcch_ConfigSIB1->controlResourceSetZero = rand() % TABLE_38213_13_10_NUM_INDEXES;
mux_pattern = table_38213_13_10_c1[pdcch_ConfigSIB1->controlResourceSetZero];
} else {
AssertFatal(true,"Invalid subCarrierSpacingCommon\n");
}
break;
default:
AssertFatal(true,"Invalid ssbSubcarrierSpacing\n");
break;
}
frequency_range_t frequency_range = FR1;
if(ssbSubcarrierSpacing>=60) {
frequency_range = FR2;
}
pdcch_ConfigSIB1->searchSpaceZero = 0;
if(mux_pattern == NR_SSB_AND_CSET_MUX_PATTERN_TYPE1 && frequency_range == FR1){
pdcch_ConfigSIB1->searchSpaceZero = rand() % TABLE_38213_13_11_NUM_INDEXES;
}
if(mux_pattern == NR_SSB_AND_CSET_MUX_PATTERN_TYPE1 && frequency_range == FR2){
pdcch_ConfigSIB1->searchSpaceZero = rand() % TABLE_38213_13_12_NUM_INDEXES;
}
return 0;
}
int
nr_rrc_mac_remove_ue(module_id_t mod_idP,
rnti_t rntiP){
// todo
return 0;
}
//------------------------------------------------------------------------------
uint8_t
nr_rrc_data_req(
const protocol_ctxt_t *const ctxt_pP,
const rb_id_t rb_idP,
const mui_t muiP,
const confirm_t confirmP,
const sdu_size_t sdu_sizeP,
uint8_t *const buffer_pP,
const pdcp_transmission_mode_t modeP
)
//------------------------------------------------------------------------------
{
if(sdu_sizeP == 255) {
LOG_I(RRC,"sdu_sizeP == 255");
return FALSE;
}
MSC_LOG_TX_MESSAGE(
ctxt_pP->enb_flag ? MSC_RRC_ENB : MSC_RRC_UE,
ctxt_pP->enb_flag ? MSC_PDCP_ENB : MSC_PDCP_UE,
buffer_pP,
sdu_sizeP,
MSC_AS_TIME_FMT"RRC_DCCH_DATA_REQ UE %x MUI %d size %u",
MSC_AS_TIME_ARGS(ctxt_pP),
ctxt_pP->rnti,
muiP,
sdu_sizeP);
MessageDef *message_p;
// Uses a new buffer to avoid issue with PDCP buffer content that could be changed by PDCP (asynchronous message handling).
uint8_t *message_buffer;
message_buffer = itti_malloc (
ctxt_pP->enb_flag ? TASK_RRC_ENB : TASK_RRC_UE,
ctxt_pP->enb_flag ? TASK_PDCP_ENB : TASK_PDCP_UE,
sdu_sizeP);
memcpy (message_buffer, buffer_pP, sdu_sizeP);
message_p = itti_alloc_new_message (ctxt_pP->enb_flag ? TASK_RRC_ENB : TASK_RRC_UE, 0, RRC_DCCH_DATA_REQ);
RRC_DCCH_DATA_REQ (message_p).frame = ctxt_pP->frame;
RRC_DCCH_DATA_REQ (message_p).enb_flag = ctxt_pP->enb_flag;
RRC_DCCH_DATA_REQ (message_p).rb_id = rb_idP;
RRC_DCCH_DATA_REQ (message_p).muip = muiP;
RRC_DCCH_DATA_REQ (message_p).confirmp = confirmP;
RRC_DCCH_DATA_REQ (message_p).sdu_size = sdu_sizeP;
RRC_DCCH_DATA_REQ (message_p).sdu_p = message_buffer;
//memcpy (RRC_DCCH_DATA_REQ (message_p).sdu_p, buffer_pP, sdu_sizeP);
RRC_DCCH_DATA_REQ (message_p).mode = modeP;
RRC_DCCH_DATA_REQ (message_p).module_id = ctxt_pP->module_id;
RRC_DCCH_DATA_REQ (message_p).rnti = ctxt_pP->rnti;
RRC_DCCH_DATA_REQ (message_p).eNB_index = ctxt_pP->eNB_index;
itti_send_msg_to_task (
ctxt_pP->enb_flag ? TASK_PDCP_ENB : TASK_PDCP_UE,
ctxt_pP->instance,
message_p);
LOG_I(RRC,"sent RRC_DCCH_DATA_REQ to TASK_PDCP_ENB\n");
/* Hack: only trigger PDCP if in CU, otherwise it is triggered by RU threads
* Ideally, PDCP would not neet to be triggered like this but react to ITTI
* messages automatically */
if (ctxt_pP->enb_flag && NODE_IS_CU(RC.rrc[ctxt_pP->module_id]->node_type))
pdcp_run(ctxt_pP);
return TRUE; // TODO should be changed to a CNF message later, currently RRC lite does not used the returned value anyway.
}
int8_t mac_rrc_nr_data_req(const module_id_t Mod_idP,
const int CC_id,
const frame_t frameP,
const rb_id_t Srb_id,
const uint8_t Nb_tb,
uint8_t *const buffer_pP ){
asn_enc_rval_t enc_rval;
uint8_t Sdu_size = 0;
uint8_t sfn_msb = (uint8_t)((frameP>>4)&0x3f);
#ifdef DEBUG_RRC
LOG_D(RRC,"[eNB %d] mac_rrc_data_req to SRB ID=%ld\n",Mod_idP,Srb_id);
#endif
rrc_gNB_carrier_data_t *carrier;
NR_BCCH_BCH_Message_t *mib;
NR_SRB_INFO *srb_info;
char payload_size, *payload_pP;
carrier = &RC.nrrrc[Mod_idP]->carrier;
mib = &carrier->mib;
srb_info = &carrier->Srb0;
/* MIBCH */
if ((Srb_id & RAB_OFFSET) == MIBCH) {
// Currently we are getting the pdcch_ConfigSIB1 from the configuration file.
// Uncomment this function for a dynamic pdcch_ConfigSIB1.
//channel_bandwidth_t min_channel_bw = bw_10MHz; // Must be obtained based on TS 38.101-1 Table 5.3.5-1
//generate_pdcch_ConfigSIB1(carrier->pdcch_ConfigSIB1,
// *carrier->servingcellconfigcommon->ssbSubcarrierSpacing,
// carrier->mib.message.choice.mib->subCarrierSpacingCommon,
// min_channel_bw);
mib->message.choice.mib->pdcch_ConfigSIB1.controlResourceSetZero = carrier->pdcch_ConfigSIB1->controlResourceSetZero;
mib->message.choice.mib->pdcch_ConfigSIB1.searchSpaceZero = carrier->pdcch_ConfigSIB1->searchSpaceZero;
mib->message.choice.mib->systemFrameNumber.buf[0] = sfn_msb << 2;
enc_rval = uper_encode_to_buffer(&asn_DEF_NR_BCCH_BCH_Message,
NULL,
(void *) mib,
carrier->MIB,
24);
LOG_D(NR_RRC, "Encoded MIB for frame %d sfn_msb %d (%p), bits %lu\n", frameP, sfn_msb, carrier->MIB,
enc_rval.encoded);
buffer_pP[0] = carrier->MIB[0];
buffer_pP[1] = carrier->MIB[1];
buffer_pP[2] = carrier->MIB[2];
LOG_D(NR_RRC, "MIB PDU buffer_pP[0]=%x , buffer_pP[1]=%x, buffer_pP[2]=%x\n", buffer_pP[0], buffer_pP[1],
buffer_pP[2]);
AssertFatal (enc_rval.encoded > 0, "ASN1 message encoding failed (%s, %lu)!\n",
enc_rval.failed_type->name, enc_rval.encoded);
return (3);
}
/* TODO BCCH SIB1 SIBs */
if ((Srb_id & RAB_OFFSET ) == BCCH) {
memcpy(&buffer_pP[0],
RC.nrrrc[Mod_idP]->carrier.SIB1,
RC.nrrrc[Mod_idP]->carrier.sizeof_SIB1);
return RC.nrrrc[Mod_idP]->carrier.sizeof_SIB1;
}
/* CCCH */
if( (Srb_id & RAB_OFFSET ) == CCCH) {
//struct rrc_eNB_ue_context_s *ue_context_p = rrc_eNB_get_ue_context(RC.rrc[Mod_idP],rnti);
//if (ue_context_p == NULL) return(0);
//eNB_RRC_UE_t *ue_p = &ue_context_p->ue_context;
LOG_D(RRC,"[gNB %d] Frame %d CCCH request (Srb_id %ld)\n", Mod_idP, frameP, Srb_id);
// srb_info=&ue_p->Srb0;
payload_size = srb_info->Tx_buffer.payload_size;
// check if data is there for MAC
if (payload_size > 0) {
payload_pP = srb_info->Tx_buffer.Payload;
LOG_D(RRC,"[gNB %d] CCCH (%p) has %d bytes (dest: %p, src %p)\n", Mod_idP, srb_info, payload_size, buffer_pP, payload_pP);
// Fill buffer
memcpy((void *)buffer_pP, (void*)payload_pP, payload_size);
Sdu_size = payload_size;
srb_info->Tx_buffer.payload_size = 0;
}
return Sdu_size;
}
return(0);
}