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70 lines
2.3 KiB
C++
70 lines
2.3 KiB
C++
/**
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*
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* \section COPYRIGHT
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*
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* Copyright 2013-2020 Software Radio Systems Limited
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*
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* By using this file, you agree to the terms and conditions set
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* forth in the LICENSE file which can be found at the top level of
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* the distribution.
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*
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*/
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#ifndef SRSLTE_SCHED_BASE_H
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#define SRSLTE_SCHED_BASE_H
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#include "srsenb/hdr/stack/mac/sched_grid.h"
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namespace srsenb {
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/**
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* Base class for scheduler algorithms implementations
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*/
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class sched_base
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{
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public:
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virtual ~sched_base() = default;
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virtual void sched_dl_users(sched_ue_list& ue_db, sf_sched* tti_sched) = 0;
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virtual void sched_ul_users(sched_ue_list& ue_db, sf_sched* tti_sched) = 0;
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protected:
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srslog::basic_logger& logger = srslog::fetch_basic_logger("MAC");
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};
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/**************** Helper methods ****************/
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rbg_interval find_empty_rbg_interval(uint32_t max_nof_rbgs, const rbgmask_t& current_mask);
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/**
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* Finds a bitmask of available RBG resources for a given UE in a greedy fashion
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* @param ue UE being allocated
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* @param is_contiguous whether to find a contiguous range of RBGs
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* @param current_mask bitmask of occupied RBGs, where to search for available RBGs
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* @return bitmask of found RBGs. If a valid mask wasn't found, bitmask::size() == 0
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*/
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rbgmask_t compute_rbgmask_greedy(uint32_t max_nof_rbgs, bool is_contiguous, const rbgmask_t& current_mask);
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/**
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* Finds a range of L contiguous PRBs that are empty
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* @param L Size of the requested UL PRBs
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* @param current_mask input prb mask where to search for available PRBs
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* @return found interval of PRBs
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*/
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prb_interval find_contiguous_ul_prbs(uint32_t L, const prbmask_t& current_mask);
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const dl_harq_proc* get_dl_retx_harq(sched_ue& user, sf_sched* tti_sched);
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const dl_harq_proc* get_dl_newtx_harq(sched_ue& user, sf_sched* tti_sched);
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const ul_harq_proc* get_ul_retx_harq(sched_ue& user, sf_sched* tti_sched);
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const ul_harq_proc* get_ul_newtx_harq(sched_ue& user, sf_sched* tti_sched);
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/// Helper methods to allocate resources in subframe
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alloc_outcome_t try_dl_retx_alloc(sf_sched& tti_sched, sched_ue& ue, const dl_harq_proc& h);
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alloc_outcome_t
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try_dl_newtx_alloc_greedy(sf_sched& tti_sched, sched_ue& ue, const dl_harq_proc& h, rbgmask_t* result_mask = nullptr);
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alloc_outcome_t try_ul_retx_alloc(sf_sched& tti_sched, sched_ue& ue, const ul_harq_proc& h);
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} // namespace srsenb
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#endif // SRSLTE_SCHED_BASE_H
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