43 lines
2.4 KiB
C
43 lines
2.4 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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#define modOrder(I_MCS,I_TBS) ((I_MCS-I_TBS)*2+2) // Find modulation order from I_TBS and I_MCS
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/** \fn unsigned char I_TBS2I_MCS(unsigned char I_TBS);
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\brief This function maps I_tbs to I_mcs according to Table 7.1.7.1-1 in 3GPP TS 36.213 V8.6.0. Where there is two supported modulation orders for the same I_TBS then either high or low modulation is chosen by changing the equality of the two first comparisons in the if-else statement.
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\param I_TBS Index of Transport Block Size
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\return I_MCS given I_TBS
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*/
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unsigned char I_TBS2I_MCS(unsigned char I_TBS);
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/** \fn unsigned char SE2I_TBS(float SE,
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unsigned char N_PRB,
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unsigned char symbPerRB);
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\brief This function maps a requested throughput in number of bits to I_tbs. The throughput is calculated as a function of modulation order, RB allocation and number of symbols per RB. The mapping orginates in the "Transport block size table" (Table 7.1.7.2.1-1 in 3GPP TS 36.213 V8.6.0)
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\param SE Spectral Efficiency (before casting to integer, multiply by 1024, remember to divide result by 1024!)
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\param N_PRB Number of PhysicalResourceBlocks allocated \sa lte_frame_parms->N_RB_DL
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\param symbPerRB Number of symbols per resource block allocated to this channel
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\return I_TBS given an SE and an N_PRB
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*/
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unsigned char SE2I_TBS(float SE,
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unsigned char N_PRB,
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unsigned char symbPerRB);
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