mirror of https://github.com/pvnis/srsRAN_4G.git
added dynamic CFI capability to the eNB scheduler
Francisco Paisana
5 years ago
committed by
Francisco Paisana
parent
12dfe1cc58
commit
ede09cb9b2
@ -0,0 +1,151 @@
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/*
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* Copyright 2013-2020 Software Radio Systems Limited
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*
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* This file is part of srsLTE.
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*
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* srsLTE is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as
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* published by the Free Software Foundation, either version 3 of
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* the License, or (at your option) any later version.
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*
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* srsLTE is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* A copy of the GNU Affero General Public License can be found in
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* the LICENSE file in the top-level directory of this distribution
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* and at http://www.gnu.org/licenses/.
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*
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*/
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#include "scheduler_test_common.h"
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#include "srsenb/hdr/stack/mac/scheduler_grid.h"
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#include "srslte/common/test_common.h"
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using namespace srsenb;
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// const uint32_t seed = std::chrono::system_clock::now().time_since_epoch().count();
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const uint32_t seed = 3930373626;
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const uint32_t PCell_IDX = 0;
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const std::array<uint32_t, 6> prb_list = {6, 15, 25, 50, 75, 100};
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uint32_t get_aggr_level(sched_ue& sched_ue, uint32_t ue_cc_idx, const std::vector<sched_cell_params_t>& cell_params)
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{
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srslte_dci_format_t dci_format = sched_ue.get_dci_format();
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uint32_t nof_dci_bits = srslte_dci_format_sizeof(&cell_params[ue_cc_idx].cfg.cell, nullptr, nullptr, dci_format);
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uint32_t aggr_level = sched_ue.get_aggr_level(ue_cc_idx, nof_dci_bits);
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return aggr_level;
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}
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int test_pdcch_one_ue()
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{
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using rand_uint = std::uniform_int_distribution<uint32_t>;
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const uint32_t ENB_CC_IDX = 0;
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// Params
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uint32_t nof_prb = prb_list[rand_uint{0, 5}(get_rand_gen())];
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uint16_t rnti = rand_uint{70, 120}(get_rand_gen());
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srslte::tti_point start_tti{rand_uint{0, 10240}(get_rand_gen())};
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uint32_t nof_ttis = 100;
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// Derived
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std::vector<sched_cell_params_t> cell_params(1);
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sched_interface::ue_cfg_t ue_cfg = generate_default_ue_cfg();
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sched_interface::cell_cfg_t cell_cfg = generate_default_cell_cfg(nof_prb);
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sched_interface::sched_args_t sched_args{};
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cell_params[ENB_CC_IDX].set_cfg(ENB_CC_IDX, cell_cfg, sched_args);
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pdcch_grid_t pdcch;
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sched_ue sched_ue{};
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sched_ue.init(rnti, cell_params);
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sched_ue.set_cfg(ue_cfg);
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pdcch.init(cell_params[PCell_IDX]);
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TESTASSERT(pdcch.nof_alloc_combinations() == 0);
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TESTASSERT(pdcch.nof_allocs() == 0);
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uint32_t tti_counter = 0;
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for (; tti_counter < nof_ttis; ++tti_counter) {
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tti_params_t tti_params{(start_tti + tti_counter).to_uint()};
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pdcch.new_tti(tti_params);
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TESTASSERT(pdcch.nof_cces() == cell_params[ENB_CC_IDX].nof_cce_table[0]);
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TESTASSERT(pdcch.get_cfi() == 1); // Start at CFI=1
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// Set DL CQI - it should affect aggregation level
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uint32_t dl_cqi = std::uniform_int_distribution<uint32_t>{1, 25}(srsenb::get_rand_gen());
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sched_ue.set_dl_cqi(tti_params.tti_tx_dl, ENB_CC_IDX, dl_cqi);
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uint32_t aggr_idx = get_aggr_level(sched_ue, PCell_IDX, cell_params);
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uint32_t max_nof_cce_locs =
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sched_ue.get_locations(ENB_CC_IDX, pdcch_grid_t::MAX_CFI, tti_params.sf_idx_tx_dl)->nof_loc[aggr_idx];
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// allocate DL user
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uint32_t prev_cfi = pdcch.get_cfi();
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srsenb::sched_dci_cce_t* dci_cce = sched_ue.get_locations(ENB_CC_IDX, prev_cfi, tti_params.sf_idx_tx_dl);
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uint32_t prev_nof_cce_locs = dci_cce->nof_loc[aggr_idx];
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TESTASSERT(pdcch.alloc_dci(alloc_type_t::DL_DATA, aggr_idx, &sched_ue));
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TESTASSERT(pdcch.nof_allocs() == 1);
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if (prev_nof_cce_locs == pdcch.nof_allocs() - 1) {
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// CFI must be increased
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TESTASSERT(pdcch.get_cfi() > prev_cfi);
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} else {
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// Previous CFI should be fine
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TESTASSERT(pdcch.get_cfi() == prev_cfi);
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}
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dci_cce = sched_ue.get_locations(ENB_CC_IDX, pdcch.get_cfi(), tti_params.sf_idx_tx_dl);
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uint32_t nof_dci_locs = dci_cce->nof_loc[aggr_idx];
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const uint32_t* dci_locs = dci_cce->cce_start[aggr_idx];
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pdcch_grid_t::alloc_result_t pdcch_result;
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pdcch_mask_t pdcch_mask;
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pdcch.get_allocs(&pdcch_result, &pdcch_mask, 0);
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TESTASSERT(pdcch_result.size() == 1);
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TESTASSERT(pdcch_result[0]->rnti == sched_ue.get_rnti());
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TESTASSERT(pdcch_result[0]->total_mask.size() == cell_params[ENB_CC_IDX].nof_cce_table[pdcch.get_cfi() - 1]);
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TESTASSERT(pdcch_result[0]->current_mask == pdcch_result[0]->total_mask);
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TESTASSERT(pdcch_result[0]->current_mask.count() == 1u << aggr_idx);
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TESTASSERT(std::count(dci_locs, dci_locs + nof_dci_locs, pdcch_result[0]->dci_pos.ncce) > 0);
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// allocate UL user
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if (max_nof_cce_locs == pdcch.nof_allocs()) {
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// no more space
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continue;
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}
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prev_nof_cce_locs = nof_dci_locs;
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prev_cfi = pdcch.get_cfi();
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TESTASSERT(pdcch.alloc_dci(alloc_type_t::UL_DATA, aggr_idx, &sched_ue));
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TESTASSERT(pdcch.nof_allocs() == 2);
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if (prev_nof_cce_locs == pdcch.nof_allocs() - 1) {
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// CFI must be increased
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TESTASSERT(pdcch.get_cfi() > prev_cfi);
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} else {
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// Previous CFI should be fine
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TESTASSERT(pdcch.get_cfi() == prev_cfi);
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}
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dci_cce = sched_ue.get_locations(ENB_CC_IDX, pdcch.get_cfi(), tti_params.sf_idx_tx_dl);
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nof_dci_locs = dci_cce->nof_loc[aggr_idx];
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dci_locs = dci_cce->cce_start[aggr_idx];
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pdcch.get_allocs(&pdcch_result, &pdcch_mask, 0);
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TESTASSERT(pdcch_result.size() == pdcch.nof_allocs());
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TESTASSERT(pdcch_result[1]->rnti == sched_ue.get_rnti());
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TESTASSERT(pdcch_result[1]->total_mask.size() == cell_params[ENB_CC_IDX].nof_cce_table[pdcch.get_cfi() - 1]);
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TESTASSERT((pdcch_result[1]->current_mask & pdcch_result[0]->current_mask).none());
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TESTASSERT(pdcch_result[1]->current_mask.count() == 1u << aggr_idx);
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TESTASSERT(pdcch_result[1]->total_mask == (pdcch_result[0]->current_mask | pdcch_result[1]->current_mask));
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TESTASSERT(std::count(dci_locs, dci_locs + nof_dci_locs, pdcch_result[0]->dci_pos.ncce) > 0);
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}
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TESTASSERT(tti_counter == nof_ttis);
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return SRSLTE_SUCCESS;
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}
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int main()
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{
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srsenb::set_randseed(seed);
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printf("This is the chosen seed: %u\n", seed);
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TESTASSERT(test_pdcch_one_ue() == SRSLTE_SUCCESS);
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}
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