mirror of https://github.com/pvnis/srsRAN_4G.git
You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
101 lines
3.2 KiB
C++
101 lines
3.2 KiB
C++
/**
|
|
*
|
|
* \section COPYRIGHT
|
|
*
|
|
* Copyright 2013-2021 Software Radio Systems Limited
|
|
*
|
|
* By using this file, you agree to the terms and conditions set
|
|
* forth in the LICENSE file which can be found at the top level of
|
|
* the distribution.
|
|
*
|
|
*/
|
|
|
|
#ifndef SRSRAN_SCHED_NR_PDCCH_H
|
|
#define SRSRAN_SCHED_NR_PDCCH_H
|
|
|
|
#include "srsenb/hdr/stack/mac/nr/sched_nr_cfg.h"
|
|
#include "srsran/adt/bounded_bitset.h"
|
|
#include "srsran/adt/bounded_vector.h"
|
|
#include "srsran/phy/common/phy_common_nr.h"
|
|
#include "srsran/phy/phch/dci.h"
|
|
|
|
namespace srsenb {
|
|
|
|
namespace sched_nr_impl {
|
|
|
|
using coreset_bitmap = srsran::bounded_bitset<SRSRAN_CORESET_FREQ_DOMAIN_RES_SIZE * SRSRAN_CORESET_DURATION_MAX, true>;
|
|
|
|
enum class pdcch_grant_type_t { sib, rar, dl_data, ul_data };
|
|
|
|
class slot_ue;
|
|
|
|
using bwp_cfg_t = sched_nr_interface::bwp_cfg_t;
|
|
|
|
class coreset_region
|
|
{
|
|
public:
|
|
coreset_region(const bwp_params& bwp_cfg_,
|
|
uint32_t coreset_id_,
|
|
uint32_t slot_idx,
|
|
pdcch_dl_list_t& pdcch_dl_list,
|
|
pdcch_ul_list_t& pdcch_ul_list);
|
|
void reset();
|
|
|
|
/**
|
|
* Allocates DCI space in PDCCH, avoiding in the process collisions with other users
|
|
* @param pdcch_grant_type_t allocation type (e.g. DL data, UL data, SIB)
|
|
* @param aggr_idx Aggregation level index (0..4)
|
|
* @param user UE object or null in case of broadcast/RAR/paging allocation
|
|
* @return if the allocation was successful
|
|
*/
|
|
bool alloc_dci(pdcch_grant_type_t alloc_type, uint32_t aggr_idx, uint32_t search_space_id, slot_ue* user = nullptr);
|
|
|
|
void rem_last_dci();
|
|
|
|
uint32_t get_td_symbols() const { return coreset_cfg->duration; }
|
|
uint32_t get_freq_resources() const { return nof_freq_res; }
|
|
uint32_t nof_cces() const { return nof_freq_res * get_td_symbols(); }
|
|
size_t nof_allocs() const { return dfs_tree.size(); }
|
|
|
|
private:
|
|
const srsran_coreset_t* coreset_cfg;
|
|
uint32_t coreset_id;
|
|
uint32_t slot_idx;
|
|
uint32_t nof_freq_res = 0;
|
|
const bwp_cce_pos_list& rar_cce_list;
|
|
|
|
// List of PDCCH grants
|
|
struct alloc_record {
|
|
uint32_t aggr_idx;
|
|
uint32_t ss_id;
|
|
uint32_t idx;
|
|
pdcch_grant_type_t alloc_type;
|
|
slot_ue* ue;
|
|
};
|
|
srsran::bounded_vector<alloc_record, MAX_GRANTS> dci_list;
|
|
pdcch_dl_list_t& pdcch_dl_list;
|
|
pdcch_ul_list_t& pdcch_ul_list;
|
|
|
|
// DFS decision tree of PDCCH grants
|
|
struct tree_node {
|
|
uint16_t rnti = SRSRAN_INVALID_RNTI;
|
|
uint32_t record_idx = 0;
|
|
uint32_t dci_pos_idx = 0;
|
|
srsran_dci_location_t dci_pos = {0, 0};
|
|
/// Accumulation of all PDCCH masks for the current solution (DFS path)
|
|
coreset_bitmap total_mask, current_mask;
|
|
};
|
|
using alloc_tree_dfs_t = srsran::bounded_vector<tree_node, MAX_GRANTS>;
|
|
alloc_tree_dfs_t dfs_tree, saved_dfs_tree;
|
|
|
|
srsran::span<const uint32_t> get_cce_loc_table(const alloc_record& record) const;
|
|
bool alloc_dfs_node(const alloc_record& record, uint32_t dci_idx);
|
|
bool get_next_dfs();
|
|
};
|
|
|
|
} // namespace sched_nr_impl
|
|
|
|
} // namespace srsenb
|
|
|
|
#endif // SRSRAN_SCHED_NR_PDCCH_H
|