mirror of https://github.com/pvnis/srsRAN_4G.git
adding phy_common_sl.{c,h}
Andre Puschmann
5 years ago
parent
8b70ff7654
commit
14000f7ae7
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/*
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* Copyright 2013-2019 Software Radio Systems Limited
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*
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* This file is part of srsLTE.
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*
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* srsLTE is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as
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* published by the Free Software Foundation, either version 3 of
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* the License, or (at your option) any later version.
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*
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* srsLTE is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* A copy of the GNU Affero General Public License can be found in
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* the LICENSE file in the top-level directory of this distribution
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* and at http://www.gnu.org/licenses/.
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*
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*/
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/**********************************************************************************************
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* File: phy_common_sl.h
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*
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* Description: Common parameters and lookup functions for Sidelink PHY
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*
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* Reference: 3GPP TS 36.211 version 15.3.0 Release 15
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*********************************************************************************************/
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#ifndef SRSLTE_PHY_COMMON_SL_H
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#define SRSLTE_PHY_COMMON_SL_H
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#include "phy_common.h"
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typedef enum SRSLTE_API {
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SRSLTE_SIDELINK_TM1 = 0,
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SRSLTE_SIDELINK_TM2,
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SRSLTE_SIDELINK_TM3,
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SRSLTE_SIDELINK_TM4
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} srslte_sl_tm_t;
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typedef enum SRSLTE_API {
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SRSLTE_SIDELINK_PSBCH = 0,
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SRSLTE_SIDELINK_PSCCH,
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SRSLTE_SIDELINK_PSSCH,
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SRSLTE_SIDELINK_PSDCH
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} srslte_sl_channels_t;
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typedef struct SRSLTE_API {
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srslte_sl_tm_t mode;
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uint32_t nof_prb;
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uint32_t nof_ports;
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uint32_t id;
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srslte_cp_t cp;
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} srslte_cell_sl_t;
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typedef enum SRSLTE_API {
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SRSLTE_SIDELINK_DATA_SYMBOL = 0,
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SRSLTE_SIDELINK_SYNC_SYMBOL,
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SRSLTE_SIDELINK_DMRS_SYMBOL,
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SRSLTE_SIDELINK_GUARD_SYMBOL
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} srslte_sl_symbol_t;
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#define SRSLTE_PSBCH_NOF_PRB (6)
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#define SRSLTE_PSCCH_TM34_NOF_PRB (2)
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#define SRSLTE_MIB_SL_LEN (40) // TM1/2: 40 bits
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#define SRSLTE_MIB_SL_V2X_LEN (48) // TM3/4: 48 bits
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#define SRSLTE_MIB_SL_MAX_LEN (SRSLTE_MIB_SL_V2X_LEN)
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#define SRSLTE_SL_TM12_DEFAULT_NUM_DMRS_SYMBOLS (2)
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#define SRSLTE_SL_TM34_DEFAULT_NUM_DMRS_SYMBOLS (4) ///< In TM3/4, all channels have 4 DMRS by default
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#define SRSLTE_PSBCH_TM12_NUM_DATA_SYMBOLS (8) ///< SL-BCH is in 8 OFDM symbols (but only 7 are tx'ed)
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#define SRSLTE_PSBCH_TM12_NUM_DMRS_SYMBOLS (2) ///< PSBCH has 2 DMRS symbols
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#define SRSLTE_PSBCH_TM12_NUM_SYNC_SYMBOLS (4) ///< Two symbols PSSS and two SSSS
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#define SRSLTE_PSBCH_TM34_NUM_DATA_SYMBOLS (7) ///< SL-BCH is in 7 OFDM symbols (but only 6 are tx'ed)
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#define SRSLTE_PSBCH_TM34_NUM_DMRS_SYMBOLS (3) ///< PSBCH has 3 DMRS symbols in TM3 and TM4
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#define SRSLTE_PSBCH_TM34_NUM_SYNC_SYMBOLS (4) ///< Two symbols PSSS and two SSSS
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#define SRSLTE_PSCCH_QM 2
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#define SRSLTE_PSCCH_TM12_NOF_PRB (1)
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#define SRSLTE_PSCCH_TM34_NOF_PRB (2)
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#define SRSLTE_PSCCH_SCRAMBLING_SEED (510) ///< Scrambling seed for PSCCH is 510
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#define SRSLTE_PSCCH_TM12_NUM_DATA_SYMBOLS (12)
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#define SRSLTE_PSCCH_TM12_NUM_DMRS_SYMBOLS (2)
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#define SRSLTE_PSCCH_TM12_NUM_DATA_SYMBOLS_EXT (10)
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#define SRSLTE_PSCCH_TM34_NUM_DATA_SYMBOLS (10)
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#define SRSLTE_PSCCH_TM34_NUM_DMRS_SYMBOLS (4)
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SRSLTE_API int srslte_sl_get_num_symbols(srslte_sl_tm_t tm, srslte_cp_t cp);
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SRSLTE_API bool srslte_psbch_is_symbol(srslte_sl_symbol_t type, srslte_sl_tm_t tm, uint32_t i);
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SRSLTE_API bool srslte_pscch_is_symbol(srslte_sl_symbol_t type, srslte_sl_tm_t tm, uint32_t i, srslte_cp_t cp);
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SRSLTE_API uint32_t srslte_sci_format0_sizeof(uint32_t nof_prb);
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#endif // SRSLTE_PHY_COMMON_SL_H
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@ -0,0 +1,141 @@
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/*
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* Copyright 2013-2019 Software Radio Systems Limited
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*
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* This file is part of srsLTE.
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*
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* srsLTE is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as
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* published by the Free Software Foundation, either version 3 of
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* the License, or (at your option) any later version.
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*
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* srsLTE is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* A copy of the GNU Affero General Public License can be found in
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* the LICENSE file in the top-level directory of this distribution
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* and at http://www.gnu.org/licenses/.
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*
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*/
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#include "srslte/phy/common/phy_common_sl.h"
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#include "srslte/phy/utils/debug.h"
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int srslte_sl_get_num_symbols(srslte_sl_tm_t tm, srslte_cp_t cp)
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{
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if (tm == SRSLTE_SIDELINK_TM1 || tm == SRSLTE_SIDELINK_TM2) {
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if (cp == SRSLTE_CP_NORM) {
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return SRSLTE_CP_NORM_SF_NSYMB;
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} else {
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return SRSLTE_CP_EXT_SF_NSYMB;
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}
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} else if (tm == SRSLTE_SIDELINK_TM3 || tm == SRSLTE_SIDELINK_TM4) {
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if (cp == SRSLTE_CP_NORM) {
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return SRSLTE_CP_NORM_SF_NSYMB;
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} else {
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ERROR("Invalid CP");
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return SRSLTE_ERROR;
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}
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} else {
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ERROR("Invalid TM");
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return SRSLTE_ERROR;
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}
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}
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///< Look-up tables for Sidelink channel symbols
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static const srslte_sl_symbol_t srslte_psbch_symbol_map_tm12[SRSLTE_CP_NORM_SF_NSYMB] = {SRSLTE_SIDELINK_DATA_SYMBOL,
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SRSLTE_SIDELINK_SYNC_SYMBOL,
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SRSLTE_SIDELINK_SYNC_SYMBOL,
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SRSLTE_SIDELINK_DMRS_SYMBOL,
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SRSLTE_SIDELINK_DATA_SYMBOL,
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SRSLTE_SIDELINK_DATA_SYMBOL,
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SRSLTE_SIDELINK_DATA_SYMBOL,
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SRSLTE_SIDELINK_DATA_SYMBOL,
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SRSLTE_SIDELINK_DATA_SYMBOL,
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SRSLTE_SIDELINK_DATA_SYMBOL,
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SRSLTE_SIDELINK_DMRS_SYMBOL,
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SRSLTE_SIDELINK_SYNC_SYMBOL,
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SRSLTE_SIDELINK_SYNC_SYMBOL,
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SRSLTE_SIDELINK_GUARD_SYMBOL};
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static const srslte_sl_symbol_t srslte_psbch_symbol_map_tm34[SRSLTE_CP_NORM_SF_NSYMB] = {SRSLTE_SIDELINK_DATA_SYMBOL,
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SRSLTE_SIDELINK_SYNC_SYMBOL,
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SRSLTE_SIDELINK_SYNC_SYMBOL,
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SRSLTE_SIDELINK_DATA_SYMBOL,
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SRSLTE_SIDELINK_DMRS_SYMBOL,
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SRSLTE_SIDELINK_DATA_SYMBOL,
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SRSLTE_SIDELINK_DMRS_SYMBOL,
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SRSLTE_SIDELINK_DATA_SYMBOL,
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SRSLTE_SIDELINK_DATA_SYMBOL,
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SRSLTE_SIDELINK_DMRS_SYMBOL,
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SRSLTE_SIDELINK_DATA_SYMBOL,
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SRSLTE_SIDELINK_SYNC_SYMBOL,
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SRSLTE_SIDELINK_SYNC_SYMBOL,
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SRSLTE_SIDELINK_GUARD_SYMBOL};
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bool srslte_psbch_is_symbol(srslte_sl_symbol_t type, srslte_sl_tm_t tm, uint32_t i)
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{
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if (tm <= SRSLTE_SIDELINK_TM2) {
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return srslte_psbch_symbol_map_tm12[i] == type;
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} else {
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return srslte_psbch_symbol_map_tm34[i] == type;
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}
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}
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static const srslte_sl_symbol_t srslte_pscch_symbol_map_tm12[SRSLTE_CP_NORM_SF_NSYMB] = {SRSLTE_SIDELINK_DATA_SYMBOL,
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SRSLTE_SIDELINK_DATA_SYMBOL,
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SRSLTE_SIDELINK_DATA_SYMBOL,
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SRSLTE_SIDELINK_DMRS_SYMBOL,
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SRSLTE_SIDELINK_DATA_SYMBOL,
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SRSLTE_SIDELINK_DATA_SYMBOL,
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SRSLTE_SIDELINK_DATA_SYMBOL,
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SRSLTE_SIDELINK_DATA_SYMBOL,
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SRSLTE_SIDELINK_DATA_SYMBOL,
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SRSLTE_SIDELINK_DATA_SYMBOL,
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SRSLTE_SIDELINK_DMRS_SYMBOL,
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SRSLTE_SIDELINK_DATA_SYMBOL,
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SRSLTE_SIDELINK_DATA_SYMBOL,
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SRSLTE_SIDELINK_GUARD_SYMBOL};
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static const srslte_sl_symbol_t srslte_pscch_symbol_map_tm12_ext[SRSLTE_CP_EXT_SF_NSYMB] = {
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SRSLTE_SIDELINK_DATA_SYMBOL,
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SRSLTE_SIDELINK_DATA_SYMBOL,
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SRSLTE_SIDELINK_DMRS_SYMBOL,
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SRSLTE_SIDELINK_DATA_SYMBOL,
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SRSLTE_SIDELINK_DATA_SYMBOL,
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SRSLTE_SIDELINK_DATA_SYMBOL,
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SRSLTE_SIDELINK_DATA_SYMBOL,
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SRSLTE_SIDELINK_DATA_SYMBOL,
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SRSLTE_SIDELINK_DMRS_SYMBOL,
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SRSLTE_SIDELINK_DATA_SYMBOL,
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SRSLTE_SIDELINK_DATA_SYMBOL,
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SRSLTE_SIDELINK_GUARD_SYMBOL};
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static const srslte_sl_symbol_t srslte_pscch_symbol_map_tm34[SRSLTE_CP_NORM_SF_NSYMB] = {SRSLTE_SIDELINK_DATA_SYMBOL,
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SRSLTE_SIDELINK_DATA_SYMBOL,
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SRSLTE_SIDELINK_DMRS_SYMBOL,
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SRSLTE_SIDELINK_DATA_SYMBOL,
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SRSLTE_SIDELINK_DATA_SYMBOL,
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SRSLTE_SIDELINK_DMRS_SYMBOL,
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SRSLTE_SIDELINK_DATA_SYMBOL,
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SRSLTE_SIDELINK_DATA_SYMBOL,
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SRSLTE_SIDELINK_DMRS_SYMBOL,
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SRSLTE_SIDELINK_DATA_SYMBOL,
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SRSLTE_SIDELINK_DATA_SYMBOL,
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SRSLTE_SIDELINK_DMRS_SYMBOL,
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SRSLTE_SIDELINK_DATA_SYMBOL,
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SRSLTE_SIDELINK_GUARD_SYMBOL};
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bool srslte_pscch_is_symbol(srslte_sl_symbol_t type, srslte_sl_tm_t tm, uint32_t i, srslte_cp_t cp)
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{
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if (tm == SRSLTE_SIDELINK_TM1 || tm == SRSLTE_SIDELINK_TM2) {
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if (cp == SRSLTE_CP_EXT) {
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return srslte_pscch_symbol_map_tm12_ext[i] == type;
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}
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return srslte_pscch_symbol_map_tm12[i] == type;
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} else if (tm == SRSLTE_SIDELINK_TM3 || tm == SRSLTE_SIDELINK_TM4) {
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return srslte_pscch_symbol_map_tm34[i] == type;
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}
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return false;
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}
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