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81 lines
2.7 KiB
C++
81 lines
2.7 KiB
C++
/**
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*
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* \section COPYRIGHT
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*
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* Copyright 2013-2021 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 SRSRAN_SCHED_NR_SIGNALLING_H
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#define SRSRAN_SCHED_NR_SIGNALLING_H
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#include "sched_nr_cfg.h"
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#include "sched_nr_interface.h"
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#include "srsenb/hdr/stack/mac/sched_common.h"
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namespace srsenb {
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namespace sched_nr_impl {
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class bwp_slot_allocator;
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/// Schedule NZP-CSI-RS resources for given slot
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void sched_nzp_csi_rs(srsran::const_span<srsran_csi_rs_nzp_set_t> nzp_csi_rs_sets,
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const srsran_slot_cfg_t& slot_cfg,
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nzp_csi_rs_list& csi_rs_list);
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/**
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* @brief Schedule grant for SSB.
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*
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* The functions schedules the SSB according to a given periodicity. This function is a simplified version of an
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* SSB scheduler and has several hard-coded parameters.
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*
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* @param[in] sl_point Slot point carrying information about current slot.
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* @param[in] ssb_periodicity Periodicity of SSB in ms.
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* @param[out] ssb_list List of SSB messages to be sent to PHY.
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*
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* @remark This function a is basic scheduling function that uses the following simplified assumption:
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* 1) Subcarrier spacing: 15kHz
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* 2) Frequency below 3GHz
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* 3) Position in Burst is 1000, i.e., Only the first SSB of the 4 opportunities gets scheduled
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*/
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void sched_ssb_basic(const slot_point& sl_point, uint32_t ssb_periodicity, ssb_list& ssb_list);
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/// Fill DCI fields with SIB info
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bool fill_dci_sib(prb_interval interv, uint32_t sib_idx, const bwp_params_t& bwp_cfg, srsran_dci_dl_nr_t& dci);
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/// For a given BWP and slot, schedule SSB, NZP CSI RS and SIBs
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void sched_dl_signalling(bwp_slot_allocator& bwp_alloc);
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/// scheduler for SIBs
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class si_sched
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{
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public:
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explicit si_sched(const bwp_params_t& bwp_cfg_);
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void run_slot(bwp_slot_allocator& slot_alloc);
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private:
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const bwp_params_t* bwp_cfg = nullptr;
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srslog::basic_logger& logger;
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struct si_msg_ctxt_t {
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uint32_t n = 0; /// 0 for SIB1, n/index in schedulingInfoList in si-SchedulingInfo in SIB1
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uint32_t len = 0;
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uint32_t win_len = 0;
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uint32_t period = 0;
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uint32_t n_tx = 0;
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alloc_result result = alloc_result::invalid_coderate; /// last attempt to schedule SI
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slot_point win_start; /// start of SI window, invalid if outside
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};
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srsran::bounded_vector<si_msg_ctxt_t, 10> pending_sis; /// configured SIB1 and SI messages
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};
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} // namespace sched_nr_impl
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} // namespace srsenb
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#endif // SRSRAN_SCHED_NR_SIGNALLING_H
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