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srsLTE/srsenb/test/upper/rrc_mobility_test.cc

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/*
* Copyright 2013-2019 Software Radio Systems Limited
*
* This file is part of srsLTE.
*
* srsLTE is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of
* the License, or (at your option) any later version.
*
* srsLTE 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 Affero General Public License for more details.
*
* A copy of the GNU Affero General Public License can be found in
* the LICENSE file in the top-level directory of this distribution
* and at http://www.gnu.org/licenses/.
*
*/
#include "srsenb/hdr/enb.h"
#include "srsenb/hdr/stack/rrc/rrc_mobility.h"
#include "srsenb/src/enb_cfg_parser.h"
#include "srsenb/test/common/dummy_classes.h"
#include "srslte/asn1/rrc_asn1_utils.h"
#include "srslte/common/test_common.h"
#include "test_helpers.h"
#include <iostream>
#include <srslte/common/log_filter.h>
meas_cell_cfg_t generate_cell1()
{
meas_cell_cfg_t cell1{};
cell1.earfcn = 3400;
cell1.pci = 1;
cell1.q_offset = 0;
cell1.eci = 0x19C01;
return cell1;
}
report_cfg_eutra_s generate_rep1()
{
report_cfg_eutra_s rep{};
rep.report_amount.value = report_cfg_eutra_s::report_amount_opts::r16;
rep.report_interv.value = report_interv_opts::ms240;
rep.max_report_cells = 2;
rep.report_quant.value = report_cfg_eutra_s::report_quant_opts::both;
rep.trigger_quant.value = report_cfg_eutra_s::trigger_quant_opts::rsrp;
rep.trigger_type.set_event().event_id.set_event_a3();
rep.trigger_type.event().time_to_trigger.value = time_to_trigger_opts::ms100;
rep.trigger_type.event().hysteresis = 0;
rep.trigger_type.event().event_id.event_a3().a3_offset = 5;
rep.trigger_type.event().event_id.event_a3().report_on_leave = true;
return rep;
}
bool is_cell_cfg_equal(const meas_cell_cfg_t& cfg, const cells_to_add_mod_s& cell)
{
return cfg.pci == cell.pci and cell.cell_individual_offset.to_number() == (int8_t)round(cfg.q_offset) and
cell.cell_idx == (cfg.eci & 0xFFu);
}
int test_correct_insertion()
{
meas_cell_cfg_t cell1 = generate_cell1(), cell2{}, cell3{}, cell4{};
cell2 = cell1;
cell2.pci = 2;
cell2.eci = 0x19C02;
cell3 = cell1;
cell3.earfcn = 2850;
cell4 = cell1;
cell4.q_offset = 1;
report_cfg_eutra_s rep1 = generate_rep1();
// TEST 1: cell/rep insertion in empty varMeasCfg
{
var_meas_cfg_t var_cfg(srslte::logmap::get("RRC "));
auto ret = var_cfg.add_cell_cfg(cell1);
TESTASSERT(std::get<0>(ret) and std::get<1>(ret) != nullptr);
const auto& objs = var_cfg.meas_objs();
TESTASSERT(objs.size() == 1 and objs[0].meas_obj_id == 1);
TESTASSERT(objs[0].meas_obj.type().value ==
asn1::rrc::meas_obj_to_add_mod_s::meas_obj_c_::types_opts::meas_obj_eutra);
auto& eutra = objs[0].meas_obj.meas_obj_eutra();
TESTASSERT(eutra.carrier_freq == cell1.earfcn);
TESTASSERT(eutra.cells_to_add_mod_list.size() == 1);
TESTASSERT(is_cell_cfg_equal(cell1, eutra.cells_to_add_mod_list[0]));
auto ret2 = var_cfg.add_report_cfg(rep1);
TESTASSERT(ret2->report_cfg_id == 1);
TESTASSERT(ret2->report_cfg.report_cfg_eutra() == rep1);
}
{
var_meas_cfg_t var_cfg(srslte::logmap::get("RRC "));
const auto& objs = var_cfg.meas_objs();
// TEST 2: insertion of out-of-order cell ids in same earfcn
var_cfg.add_cell_cfg(cell2);
var_cfg.add_cell_cfg(cell1);
TESTASSERT(objs.size() == 1 and objs[0].meas_obj_id == 1);
auto& eutra = objs[0].meas_obj.meas_obj_eutra();
TESTASSERT(eutra.carrier_freq == cell1.earfcn);
TESTASSERT(eutra.cells_to_add_mod_list.size() == 2);
const cells_to_add_mod_s* cell_it = eutra.cells_to_add_mod_list.begin();
TESTASSERT(cell_it[0].cell_idx == (cell1.eci & 0xFFu));
TESTASSERT(cell_it[1].cell_idx == (cell2.eci & 0xFFu));
TESTASSERT(cell_it[1].pci == cell2.pci);
// TEST 3: insertion of cell in another frequency
auto ret1 = var_cfg.add_cell_cfg(cell3);
TESTASSERT(std::get<0>(ret1) and std::get<1>(ret1)->meas_obj_id == 2);
TESTASSERT(objs.size() == 2 and objs[1].meas_obj_id == 2);
const auto& eutra2 = objs[1].meas_obj.meas_obj_eutra();
TESTASSERT(eutra2.carrier_freq == cell3.earfcn);
TESTASSERT(eutra2.cells_to_add_mod_list.size() == 1);
// TEST 4: update of existing cell
auto ret2 = var_cfg.add_cell_cfg(cell4);
TESTASSERT(std::get<0>(ret2) and std::get<1>(ret2)->meas_obj_id == 1);
auto& eutra3 = objs[0].meas_obj.meas_obj_eutra();
TESTASSERT(objs.size() == 2 and objs[0].meas_obj_id == 1);
TESTASSERT(eutra3.carrier_freq == cell4.earfcn);
TESTASSERT(eutra3.cells_to_add_mod_list.size() == 2);
TESTASSERT(eutra3.cells_to_add_mod_list[0].cell_idx == (cell1.eci & 0xFFu));
TESTASSERT(eutra3.cells_to_add_mod_list[0].cell_individual_offset.to_number() == 1);
}
return 0;
}
int test_correct_meascfg_calculation()
{
var_meas_cfg_t src_var(srslte::logmap::get("RRC ")), target_var(srslte::logmap::get("RRC "));
meas_cell_cfg_t cell1{}, cell2{};
cell1.earfcn = 3400;
cell1.pci = 1;
cell1.q_offset = 0;
cell1.eci = 0x19C01;
cell2 = cell1;
cell2.pci = 2;
cell2.eci = 0x19C02;
report_cfg_eutra_s rep1 = generate_rep1(), rep2{}, rep3{};
rep2 = rep1;
rep2.trigger_quant.value = report_cfg_eutra_s::trigger_quant_opts::rsrq;
rep3 = rep2;
rep3.report_quant.value = report_cfg_eutra_s::report_quant_opts::same_as_trigger_quant;
{
meas_cfg_s result_meascfg;
// TEST: Insertion of two cells in var_meas propagates to the resulting meas_cfg_s cellsToAddMod list
target_var.add_cell_cfg(cell1);
target_var.add_cell_cfg(cell2);
target_var.add_report_cfg(rep1);
target_var.add_report_cfg(rep2);
target_var.add_measid_cfg(1, 1);
target_var.add_measid_cfg(1, 2);
src_var.compute_diff_meas_cfg(target_var, &result_meascfg);
TESTASSERT(result_meascfg.meas_obj_to_add_mod_list_present);
TESTASSERT(not result_meascfg.meas_obj_to_rem_list_present);
TESTASSERT(result_meascfg.meas_obj_to_add_mod_list.size() == 1);
auto* item = &result_meascfg.meas_obj_to_add_mod_list[0];
TESTASSERT(item->meas_obj_id == 1 and
item->meas_obj.type().value == meas_obj_to_add_mod_s::meas_obj_c_::types_opts::meas_obj_eutra);
auto& eutra = item->meas_obj.meas_obj_eutra();
TESTASSERT(eutra.cells_to_add_mod_list_present and not eutra.cells_to_rem_list_present);
TESTASSERT(eutra.cells_to_add_mod_list.size() == 2);
auto* cell_item = &eutra.cells_to_add_mod_list[0];
TESTASSERT(is_cell_cfg_equal(cell1, *cell_item));
cell_item++;
TESTASSERT(is_cell_cfg_equal(cell2, *cell_item));
TESTASSERT(result_meascfg.report_cfg_to_add_mod_list_present and not result_meascfg.report_cfg_to_rem_list_present);
TESTASSERT(result_meascfg.report_cfg_to_add_mod_list.size() == 2);
TESTASSERT(result_meascfg.report_cfg_to_add_mod_list[0].report_cfg_id == 1);
TESTASSERT(result_meascfg.report_cfg_to_add_mod_list[0].report_cfg.report_cfg_eutra() == rep1);
TESTASSERT(result_meascfg.report_cfg_to_add_mod_list[1].report_cfg_id == 2);
TESTASSERT(result_meascfg.report_cfg_to_add_mod_list[1].report_cfg.report_cfg_eutra() == rep2);
TESTASSERT(result_meascfg.meas_id_to_add_mod_list_present and not result_meascfg.meas_id_to_rem_list_present);
TESTASSERT(result_meascfg.meas_id_to_add_mod_list.size() == 2);
auto* measid_item = &result_meascfg.meas_id_to_add_mod_list[0];
TESTASSERT(measid_item->meas_id == 1 and measid_item->meas_obj_id == 1 and measid_item->report_cfg_id == 1);
measid_item++;
TESTASSERT(measid_item->meas_id == 2 and measid_item->meas_obj_id == 1 and measid_item->report_cfg_id == 2);
// TEST: if measCfg is empty if nothing was updated
src_var = target_var;
src_var.compute_diff_meas_cfg(target_var, &result_meascfg);
TESTASSERT(not result_meascfg.meas_obj_to_add_mod_list_present);
TESTASSERT(result_meascfg.meas_obj_to_add_mod_list.size() == 0);
TESTASSERT(not result_meascfg.report_cfg_to_rem_list_present);
TESTASSERT(result_meascfg.report_cfg_to_add_mod_list.size() == 0);
// TEST: Cell is added to cellsToAddModList if just a field was updated
cell1.pci = 3;
src_var = target_var;
target_var.add_cell_cfg(cell1);
src_var.compute_diff_meas_cfg(target_var, &result_meascfg);
TESTASSERT(result_meascfg.meas_obj_to_add_mod_list_present);
TESTASSERT(result_meascfg.meas_obj_to_add_mod_list.size() == 1);
item = &result_meascfg.meas_obj_to_add_mod_list[0];
TESTASSERT(item->meas_obj_id == 1 and
item->meas_obj.type().value == meas_obj_to_add_mod_s::meas_obj_c_::types_opts::meas_obj_eutra);
eutra = item->meas_obj.meas_obj_eutra();
TESTASSERT(eutra.cells_to_add_mod_list_present and not eutra.cells_to_rem_list_present);
TESTASSERT(eutra.cells_to_add_mod_list.size() == 1);
cell_item = &eutra.cells_to_add_mod_list[0];
TESTASSERT(is_cell_cfg_equal(cell1, *cell_item));
// TEST: Removal of cell/rep from target propagates to the resulting meas_cfg_s
src_var = target_var;
target_var = var_meas_cfg_t{srslte::logmap::get("RRC ")};
target_var.add_cell_cfg(cell2);
target_var.add_report_cfg(rep1);
target_var.add_report_cfg(rep3);
src_var.compute_diff_meas_cfg(target_var, &result_meascfg);
TESTASSERT(result_meascfg.meas_obj_to_add_mod_list_present);
TESTASSERT(result_meascfg.meas_obj_to_add_mod_list.size() == 1);
item = &result_meascfg.meas_obj_to_add_mod_list[0];
TESTASSERT(item->meas_obj_id == 1 and
item->meas_obj.type().value == meas_obj_to_add_mod_s::meas_obj_c_::types_opts::meas_obj_eutra);
eutra = item->meas_obj.meas_obj_eutra();
TESTASSERT(not eutra.cells_to_add_mod_list_present and eutra.cells_to_rem_list_present);
TESTASSERT(eutra.cells_to_rem_list.size() == 1);
TESTASSERT(eutra.cells_to_rem_list[0] == (cell1.eci & 0xFFu));
TESTASSERT(result_meascfg.report_cfg_to_add_mod_list_present and not result_meascfg.report_cfg_to_rem_list_present);
TESTASSERT(result_meascfg.report_cfg_to_add_mod_list.size() == 1);
TESTASSERT(result_meascfg.report_cfg_to_add_mod_list[0].report_cfg_id == 2);
TESTASSERT(result_meascfg.report_cfg_to_add_mod_list[0].report_cfg.report_cfg_eutra() == rep3);
}
return SRSLTE_SUCCESS;
}
struct mobility_test_params {
enum class test_fail_at { success, wrong_measreport, concurrent_ho, ho_prep_failure } fail_at;
const char* to_string()
{
switch (fail_at) {
case test_fail_at::success:
return "success";
case test_fail_at::wrong_measreport:
return "wrong measreport";
case test_fail_at::concurrent_ho:
return "measreport while in handover";
case test_fail_at::ho_prep_failure:
return "ho preparation failure";
default:
return "none";
}
}
};
int test_mobility_class(mobility_test_params test_params)
{
printf("\n===== TEST: test_mobility_class() for event \"%s\" =====\n", test_params.to_string());
srslte::scoped_log<srslte::test_log_filter> rrc_log("RRC ");
srslte::timer_handler timers;
srslte::unique_byte_buffer_t pdu;
srsenb::all_args_t args;
rrc_cfg_t cfg;
TESTASSERT(test_helpers::parse_default_cfg(&cfg, args) == SRSLTE_SUCCESS);
report_cfg_eutra_s rep = generate_rep1();
cfg.meas_cfg.meas_reports.push_back(rep);
meas_cell_cfg_t cell2 = generate_cell1();
cell2.pci = 2;
cell2.eci = 0x19C02;
cfg.meas_cfg.meas_cells.push_back(cell2);
srsenb::rrc rrc;
mac_dummy mac;
rlc_dummy rlc;
test_dummies::pdcp_mobility_dummy pdcp;
phy_dummy phy;
test_dummies::s1ap_mobility_dummy s1ap;
gtpu_dummy gtpu;
rrc_log->set_level(srslte::LOG_LEVEL_INFO);
rrc_log->set_hex_limit(1024);
rrc.init(&cfg, &phy, &mac, &rlc, &pdcp, &s1ap, &gtpu, &timers, rrc_log.get());
auto tic = [&timers, &rrc] {
timers.step_all();
rrc.tti_clock();
};
uint16_t rnti = 0x46;
rrc.add_user(rnti, {});
rrc_log->set_level(srslte::LOG_LEVEL_NONE); // mute all the startup log
// Do all the handshaking until the first RRC Connection Reconf
test_helpers::bring_rrc_to_reconf_state(rrc, timers, rnti);
rrc_log->set_level(srslte::LOG_LEVEL_INFO);
/* Receive MeasReport from UE (correct if PCI=2) */
if (test_params.fail_at == mobility_test_params::test_fail_at::wrong_measreport) {
uint8_t meas_report[] = {0x08, 0x10, 0x38, 0x74, 0x00, 0x0D, 0xBC, 0x80}; // PCI == 3
test_helpers::copy_msg_to_buffer(pdu, meas_report, sizeof(meas_report));
} else {
uint8_t meas_report[] = {0x08, 0x10, 0x38, 0x74, 0x00, 0x09, 0xBC, 0x80}; // PCI == 2
test_helpers::copy_msg_to_buffer(pdu, meas_report, sizeof(meas_report));
}
rrc.write_pdu(rnti, 1, std::move(pdu));
tic();
/* Test Case: the MeasReport is not valid */
if (test_params.fail_at == mobility_test_params::test_fail_at::wrong_measreport) {
TESTASSERT(s1ap.last_ho_required.rrc_container == nullptr);
TESTASSERT(rrc_log->error_counter == 1);
return SRSLTE_SUCCESS;
}
/* Test Case: Multiple concurrent MeasReports arrived. Only one HO procedure should be running */
if (test_params.fail_at == mobility_test_params::test_fail_at::concurrent_ho) {
s1ap.last_ho_required = {};
uint8_t meas_report[] = {0x08, 0x10, 0x38, 0x74, 0x00, 0x09, 0xBC, 0x80}; // PCI == 2
test_helpers::copy_msg_to_buffer(pdu, meas_report, sizeof(meas_report));
rrc.write_pdu(rnti, 1, std::move(pdu));
tic();
TESTASSERT(s1ap.last_ho_required.rrc_container == nullptr);
TESTASSERT(rrc_log->error_counter == 1);
return SRSLTE_SUCCESS;
}
/* Check HO Required was sent to S1AP */
TESTASSERT(s1ap.last_ho_required.rnti == rnti);
TESTASSERT(s1ap.last_ho_required.target_eci == cell2.eci);
TESTASSERT(s1ap.last_ho_required.target_plmn.to_string() == "00101");
{
asn1::cbit_ref bref(s1ap.last_ho_required.rrc_container->msg, s1ap.last_ho_required.rrc_container->N_bytes);
asn1::rrc::ho_prep_info_s hoprep;
TESTASSERT(hoprep.unpack(bref) == asn1::SRSASN_SUCCESS);
ho_prep_info_r8_ies_s& hoprepr8 = hoprep.crit_exts.c1().ho_prep_info_r8();
TESTASSERT(hoprepr8.as_cfg_present);
// Check if RRC sends the current active bearers
TESTASSERT(hoprepr8.as_cfg.source_rr_cfg.drb_to_add_mod_list_present);
TESTASSERT(hoprepr8.as_cfg.source_rr_cfg.drb_to_add_mod_list[0].drb_id == 1);
}
/* Test Case: HandoverPreparation has failed */
if (test_params.fail_at == mobility_test_params::test_fail_at::ho_prep_failure) {
rrc.ho_preparation_complete(rnti, false, nullptr);
TESTASSERT(rrc_log->error_counter == 1);
return SRSLTE_SUCCESS;
}
/* MME returns back an HandoverCommand, S1AP unwraps the RRC container */
uint8_t ho_cmd_rrc_container[] = {0x01, 0xa9, 0x00, 0xd9, 0xfc, 0x00, 0x00, 0x00, 0x00, 0x0b, 0x22, 0x04, 0x00, 0x00,
0x01, 0x48, 0x04, 0xbc, 0x00, 0x00, 0x00, 0x00, 0x08, 0x00, 0x02, 0xa0, 0x07, 0xa0,
0x10, 0x00, 0x01, 0x00, 0x05, 0x00, 0xa7, 0xd0, 0xc1, 0xf6, 0xaf, 0x3e, 0x12, 0xcc,
0x86, 0x0d, 0x30, 0x00, 0x0b, 0x5a, 0x02, 0x17, 0x86, 0x00, 0x05, 0xa0, 0x20};
test_helpers::copy_msg_to_buffer(pdu, ho_cmd_rrc_container, sizeof(ho_cmd_rrc_container));
rrc.ho_preparation_complete(rnti, true, std::move(pdu));
TESTASSERT(rrc_log->error_counter == 0);
return SRSLTE_SUCCESS;
}
int main(int argc, char** argv)
{
srslte::logmap::get_instance()->set_default_log_level(srslte::LOG_LEVEL_INFO);
if (argc < 3) {
argparse::usage(argv[0]);
return -1;
}
argparse::parse_args(argc, argv);
TESTASSERT(test_correct_insertion() == 0);
TESTASSERT(test_correct_meascfg_calculation() == 0);
TESTASSERT(test_mobility_class(mobility_test_params{mobility_test_params::test_fail_at::wrong_measreport}) == 0);
TESTASSERT(test_mobility_class(mobility_test_params{mobility_test_params::test_fail_at::concurrent_ho}) == 0);
TESTASSERT(test_mobility_class(mobility_test_params{mobility_test_params::test_fail_at::ho_prep_failure}) == 0);
TESTASSERT(test_mobility_class(mobility_test_params{mobility_test_params::test_fail_at::success}) == 0);
printf("\nSuccess\n");
srslte::byte_buffer_pool::get_instance()->cleanup();
return SRSLTE_SUCCESS;
}
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