cig
ec422f7050
- this was necessary because as soon as the gNB starts, it tries detecting the prach preambles and it mesaures the background noise. However, there is a delay of several dozens of frames before it considers the preables as detected. - the solution at the UE consists in avoiding sending preamble as soon as the UE syncs by introducing an offset, this keeps the power measurements low at gNB side as long as the preamble detection counter is under threshold
98 lines
3.8 KiB
C
98 lines
3.8 KiB
C
/*
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* Licensed to the OpenAirInterface (OAI) Software Alliance under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership.
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* The OpenAirInterface Software Alliance licenses this file to You under
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* the OAI Public License, Version 1.1 (the "License"); you may not use this file
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* except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.openairinterface.org/?page_id=698
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*-------------------------------------------------------------------------------
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* For more information about the OpenAirInterface (OAI) Software Alliance:
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* contact@openairinterface.org
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*/
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#ifndef __NR_ESTIMATION_DEFS__H__
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#define __NR_ESTIMATION_DEFS__H__
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#include "PHY/defs_nr_UE.h"
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//#include "PHY/defs_gNB.h"
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/** @addtogroup _PHY_PARAMETER_ESTIMATION_BLOCKS_
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* @{
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*/
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/*!\brief Timing drift hysterisis in samples*/
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#define SYNCH_HYST 2
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/*!
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\brief This function performs channel estimation including frequency and temporal interpolation
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\param phy_vars_ue Pointer to UE PHY variables
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\param eNB_id Index of target eNB
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\param eNB_offset Offset for interfering eNB (in terms cell ID mod 3)
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\param Ns slot number (0..19)
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\param p antenna port
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\param l symbol within slot
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\param symbol symbol within frame
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*/
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int nr_pdcch_channel_estimation(PHY_VARS_NR_UE *ue,
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uint8_t eNB_offset,
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unsigned char Ns,
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unsigned char symbol,
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unsigned short coreset_start_subcarrier,
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unsigned short nb_rb_coreset);
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int nr_pbch_dmrs_correlation(PHY_VARS_NR_UE *ue,
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uint8_t eNB_offset,
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unsigned char Ns,
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unsigned char symbol,
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int dmrss,
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NR_UE_SSB *current_ssb);
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int nr_pbch_channel_estimation(PHY_VARS_NR_UE *ue,
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uint8_t eNB_offset,
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unsigned char Ns,
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unsigned char symbol,
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int dmrss,
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uint8_t ssb_index,
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uint8_t n_hf);
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int nr_pdsch_channel_estimation(PHY_VARS_NR_UE *ue,
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uint8_t eNB_offset,
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unsigned char Ns,
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unsigned short p,
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unsigned char symbol,
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unsigned short bwp_start_subcarrier,
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unsigned short nb_rb_pdsch);
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void nr_adjust_synch_ue(NR_DL_FRAME_PARMS *frame_parms,
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PHY_VARS_NR_UE *ue,
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module_id_t eNB_id,
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uint8_t frame,
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uint8_t subframe,
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unsigned char clear,
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short coef);
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void nr_ue_measurements(PHY_VARS_NR_UE *ue,
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unsigned int subframe_offset,
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unsigned char N0_symbol,
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unsigned char abstraction_flag,
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unsigned char rank_adaptation,
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uint8_t subframe);
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void phy_adjust_gain_nr(PHY_VARS_NR_UE *ue,
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uint32_t rx_power_fil_dB,
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uint8_t eNB_id);
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int16_t get_nr_PL(uint8_t Mod_id, uint8_t CC_id, uint8_t gNB_index);
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#endif
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