mirror of https://github.com/pvnis/srsRAN_4G.git
make DL and UL harq header-only
- move src of DL and UL harq in to header in prep for templating both - add commong MAC headermaster
Andre Puschmann
8 years ago
parent
bfa10148f5
commit
faf120501a
@ -0,0 +1,45 @@
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/**
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*
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* \section COPYRIGHT
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*
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* Copyright 2013-2015 Software Radio Systems Limited
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*
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* \section LICENSE
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*
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* This file is part of the srsUE library.
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*
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* srsUE 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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* srsUE 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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#ifndef MAC_COMMON_H
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#define MAC_COMMON_H
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namespace srsue {
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typedef enum {
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HARQ_RTT,
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TIME_ALIGNMENT,
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CONTENTION_TIMER,
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BSR_TIMER_PERIODIC,
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BSR_TIMER_RETX,
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PHR_TIMER_PERIODIC,
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PHR_TIMER_PROHIBIT,
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NOF_MAC_TIMERS
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} mac_timers_t;
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} // namespace srsue
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#endif // MAC_COMMON_H
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@ -1,337 +0,0 @@
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/**
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*
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* \section COPYRIGHT
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*
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* Copyright 2013-2015 Software Radio Systems Limited
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*
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* \section LICENSE
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*
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* This file is part of the srsUE library.
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*
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* srsUE 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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* srsUE 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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#define Error(fmt, ...) log_h->error_line(__FILE__, __LINE__, fmt, ##__VA_ARGS__)
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#define Warning(fmt, ...) log_h->warning_line(__FILE__, __LINE__, fmt, ##__VA_ARGS__)
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#define Info(fmt, ...) log_h->info_line(__FILE__, __LINE__, fmt, ##__VA_ARGS__)
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#define Debug(fmt, ...) log_h->debug_line(__FILE__, __LINE__, fmt, ##__VA_ARGS__)
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#include "mac/mac.h"
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#include "mac/dl_harq.h"
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namespace srsue {
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/***********************************************************
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*
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* HARQ ENTITY
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*
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*********************************************************/
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dl_harq_entity::dl_harq_entity()
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{
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pcap = NULL;
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}
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bool dl_harq_entity::init(srslte::log* log_h_, mac_interface_rrc::mac_cfg_t *mac_cfg_, srslte::timers* timers_, demux *demux_unit_)
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{
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timers_db = timers_;
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demux_unit = demux_unit_;
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mac_cfg = mac_cfg_;
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si_window_start = 0;
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log_h = log_h_;
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for (uint32_t i=0;i<NOF_HARQ_PROC+1;i++) {
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if (!proc[i].init(i, this)) {
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return false;
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}
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}
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return true;
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}
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void dl_harq_entity::start_pcap(srslte::mac_pcap* pcap_)
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{
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pcap = pcap_;
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}
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void dl_harq_entity::reset()
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{
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for (uint32_t i=0;i<NOF_HARQ_PROC+1;i++) {
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proc[i].reset();
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}
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dl_sps_assig.clear();
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}
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uint32_t dl_harq_entity::get_harq_sps_pid(uint32_t tti) {
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return 0;
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}
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void dl_harq_entity::new_grant_dl(mac_interface_phy::mac_grant_t grant, mac_interface_phy::tb_action_dl_t* action)
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{
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if (grant.rnti_type != SRSLTE_RNTI_SPS) {
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uint32_t harq_pid;
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// Set BCCH PID for SI RNTI
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if (grant.rnti_type == SRSLTE_RNTI_SI) {
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harq_pid = HARQ_BCCH_PID;
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} else {
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harq_pid = grant.pid%NOF_HARQ_PROC;
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}
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if (grant.rnti_type == SRSLTE_RNTI_TEMP && last_temporal_crnti != grant.rnti) {
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grant.ndi = true;
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Info("Set NDI=1 for Temp-RNTI DL grant\n");
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last_temporal_crnti = grant.rnti;
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}
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if (grant.rnti_type == SRSLTE_RNTI_USER && proc[harq_pid].is_sps()) {
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grant.ndi = true;
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Info("Set NDI=1 for C-RNTI DL grant\n");
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}
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proc[harq_pid].new_grant_dl(grant, action);
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} else {
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/* This is for SPS scheduling */
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uint32_t harq_pid = get_harq_sps_pid(grant.tti)%NOF_HARQ_PROC;
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if (grant.ndi) {
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grant.ndi = false;
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proc[harq_pid].new_grant_dl(grant, action);
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} else {
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if (grant.is_sps_release) {
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dl_sps_assig.clear();
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if (timers_db->get(mac::TIME_ALIGNMENT)->is_running()) {
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//phy_h->send_sps_ack();
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Warning("PHY Send SPS ACK not implemented\n");
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}
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} else {
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Error("SPS not implemented\n");
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//dl_sps_assig.reset(grant.tti, grant);
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//grant.ndi = true;
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//procs[harq_pid].save_grant();
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}
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}
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}
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}
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void dl_harq_entity::tb_decoded(bool ack, srslte_rnti_type_t rnti_type, uint32_t harq_pid)
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{
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if (rnti_type == SRSLTE_RNTI_SI) {
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proc[NOF_HARQ_PROC].tb_decoded(ack);
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} else {
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proc[harq_pid%NOF_HARQ_PROC].tb_decoded(ack);
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}
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}
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int dl_harq_entity::get_current_tbs(uint32_t harq_pid)
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{
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return proc[harq_pid%NOF_HARQ_PROC].get_current_tbs();
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}
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bool dl_harq_entity::generate_ack_callback(void *arg)
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{
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demux *demux_unit = (demux*) arg;
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return demux_unit->get_uecrid_successful();
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}
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void dl_harq_entity::set_si_window_start(int si_window_start_)
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{
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si_window_start = si_window_start_;
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}
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float dl_harq_entity::get_average_retx()
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{
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return average_retx;
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}
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/***********************************************************
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*
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* HARQ PROCESS
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*
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*********************************************************/
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dl_harq_entity::dl_harq_process::dl_harq_process() {
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is_initiated = false;
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ack = false;
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bzero(&cur_grant, sizeof(mac_interface_phy::mac_grant_t));
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}
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void dl_harq_entity::dl_harq_process::reset() {
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ack = false;
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payload_buffer_ptr = NULL;
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bzero(&cur_grant, sizeof(mac_interface_phy::mac_grant_t));
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if (is_initiated) {
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srslte_softbuffer_rx_reset(&softbuffer);
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}
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}
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bool dl_harq_entity::dl_harq_process::init(uint32_t pid_, dl_harq_entity *parent) {
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if (srslte_softbuffer_rx_init(&softbuffer, 110)) {
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Error("Error initiating soft buffer\n");
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return false;
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} else {
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pid = pid_;
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is_initiated = true;
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harq_entity = parent;
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log_h = harq_entity->log_h;
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return true;
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}
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}
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bool dl_harq_entity::dl_harq_process::is_sps()
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{
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return false;
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}
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bool dl_harq_entity::dl_harq_process::calc_is_new_transmission(mac_interface_phy::mac_grant_t grant) {
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bool is_new_tb = true;
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if ((srslte_tti_interval(grant.tti, cur_grant.tti) <= 8 && (grant.n_bytes == cur_grant.n_bytes)) ||
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pid == HARQ_BCCH_PID)
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{
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is_new_tb = false;
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}
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if ((grant.ndi != cur_grant.ndi && !is_new_tb) || // NDI toggled for same TB
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is_new_tb || // is new TB
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(pid == HARQ_BCCH_PID && grant.rv == 0)) // Broadcast PID and 1st TX (RV=0)
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{
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is_new_transmission = true;
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Debug("Set HARQ for new transmission\n");
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} else {
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is_new_transmission = false;
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Debug("Set HARQ for retransmission\n");
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}
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return is_new_transmission;
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}
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void dl_harq_entity::dl_harq_process::new_grant_dl(mac_interface_phy::mac_grant_t grant, mac_interface_phy::tb_action_dl_t* action)
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{
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// Compute RV for BCCH when not specified in PDCCH format
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if (pid == HARQ_BCCH_PID && grant.rv == -1) {
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uint32_t k;
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if ((grant.tti/10)%2 == 0 && grant.tti%10 == 5) { // This is SIB1, k is different
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k = (grant.tti/20)%4;
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grant.rv = ((uint32_t) ceilf((float)1.5*k))%4;
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} else if (grant.rv == -1) {
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k = (grant.tti-harq_entity->si_window_start)%4;
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grant.rv = ((uint32_t) ceilf((float)1.5*k))%4;
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}
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}
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calc_is_new_transmission(grant);
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if (is_new_transmission) {
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ack = false;
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srslte_softbuffer_rx_reset_tbs(&softbuffer, cur_grant.n_bytes*8);
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n_retx = 0;
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}
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// Save grant
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grant.last_ndi = cur_grant.ndi;
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grant.last_tti = cur_grant.tti;
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memcpy(&cur_grant, &grant, sizeof(mac_interface_phy::mac_grant_t));
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// Fill action structure
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bzero(action, sizeof(mac_interface_phy::tb_action_dl_t));
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action->default_ack = ack;
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action->generate_ack = true;
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action->decode_enabled = false;
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// If data has not yet been successfully decoded
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if (ack == false) {
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// Instruct the PHY To combine the received data and attempt to decode it
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payload_buffer_ptr = harq_entity->demux_unit->request_buffer(pid, cur_grant.n_bytes);
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action->payload_ptr = payload_buffer_ptr;
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if (!action->payload_ptr) {
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action->decode_enabled = false;
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Error("Can't get a buffer for TBS=%d\n", cur_grant.n_bytes);
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return;
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}
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action->decode_enabled = true;
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action->rv = cur_grant.rv;
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action->rnti = cur_grant.rnti;
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action->softbuffer = &softbuffer;
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memcpy(&action->phy_grant, &cur_grant.phy_grant, sizeof(srslte_phy_grant_t));
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n_retx++;
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} else {
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Warning("DL PID %d: Received duplicate TB. Discarting and retransmitting ACK\n", pid);
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}
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if (pid == HARQ_BCCH_PID || harq_entity->timers_db->get(mac::TIME_ALIGNMENT)->is_expired()) {
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// Do not generate ACK
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Debug("Not generating ACK\n");
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action->generate_ack = false;
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} else {
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if (cur_grant.rnti_type == SRSLTE_RNTI_TEMP && ack == false) {
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// Postpone ACK after contention resolution is resolved
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action->generate_ack_callback = harq_entity->generate_ack_callback;
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action->generate_ack_callback_arg = harq_entity->demux_unit;
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Debug("ACK pending contention resolution\n");
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} else {
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Debug("Generating ACK\n");
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}
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}
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}
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int dl_harq_entity::dl_harq_process::get_current_tbs()
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{
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return cur_grant.n_bytes*8;
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}
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void dl_harq_entity::dl_harq_process::tb_decoded(bool ack_)
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{
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ack = ack_;
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if (ack == true) {
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if (pid == HARQ_BCCH_PID) {
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if (harq_entity->pcap) {
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harq_entity->pcap->write_dl_sirnti(payload_buffer_ptr, cur_grant.n_bytes, ack, cur_grant.tti);
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}
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Debug("Delivering PDU=%d bytes to Dissassemble and Demux unit (BCCH)\n", cur_grant.n_bytes);
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harq_entity->demux_unit->push_pdu(pid, payload_buffer_ptr, cur_grant.n_bytes, cur_grant.tti);
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} else {
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if (harq_entity->pcap) {
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harq_entity->pcap->write_dl_crnti(payload_buffer_ptr, cur_grant.n_bytes, cur_grant.rnti, ack, cur_grant.tti);
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}
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if (ack) {
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if (cur_grant.rnti_type == SRSLTE_RNTI_TEMP) {
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Debug("Delivering PDU=%d bytes to Dissassemble and Demux unit (Temporal C-RNTI)\n", cur_grant.n_bytes);
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harq_entity->demux_unit->push_pdu_temp_crnti(payload_buffer_ptr, cur_grant.n_bytes);
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} else {
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Debug("Delivering PDU=%d bytes to Dissassemble and Demux unit\n", cur_grant.n_bytes);
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harq_entity->demux_unit->push_pdu(pid, payload_buffer_ptr, cur_grant.n_bytes, cur_grant.tti);
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// Compute average number of retransmissions per packet
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harq_entity->average_retx = SRSLTE_VEC_CMA((float) n_retx, harq_entity->average_retx, harq_entity->nof_pkts++);
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}
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}
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}
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} else {
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harq_entity->demux_unit->deallocate(payload_buffer_ptr);
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}
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Info("DL %d: %s tbs=%d, rv=%d, ack=%s, ndi=%d (%d), tti=%d (%d)\n",
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pid, is_new_transmission?"newTX":"reTX ",
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cur_grant.n_bytes, cur_grant.rv, ack?"OK":"KO",
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cur_grant.ndi, cur_grant.last_ndi, cur_grant.tti, cur_grant.last_tti);
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if (ack && pid == HARQ_BCCH_PID) {
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reset();
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}
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}
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}
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@ -1,394 +0,0 @@
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/**
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*
|
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* \section COPYRIGHT
|
||||
*
|
||||
* Copyright 2013-2015 Software Radio Systems Limited
|
||||
*
|
||||
* \section LICENSE
|
||||
*
|
||||
* This file is part of the srsUE library.
|
||||
*
|
||||
* srsUE is free software: you can redistribute it and/or modify
|
||||
* it under the terms of the GNU Affero General Public License as
|
||||
* published by the Free Software Foundation, either version 3 of
|
||||
* the License, or (at your option) any later version.
|
||||
*
|
||||
* srsUE is distributed in the hope that it will be useful,
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
* GNU Affero General Public License for more details.
|
||||
*
|
||||
* A copy of the GNU Affero General Public License can be found in
|
||||
* the LICENSE file in the top-level directory of this distribution
|
||||
* and at http://www.gnu.org/licenses/.
|
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*
|
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*/
|
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|
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#define Error(fmt, ...) log_h->error_line(__FILE__, __LINE__, fmt, ##__VA_ARGS__)
|
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#define Warning(fmt, ...) log_h->warning_line(__FILE__, __LINE__, fmt, ##__VA_ARGS__)
|
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#define Info(fmt, ...) log_h->info_line(__FILE__, __LINE__, fmt, ##__VA_ARGS__)
|
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#define Debug(fmt, ...) log_h->debug_line(__FILE__, __LINE__, fmt, ##__VA_ARGS__)
|
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|
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#include "srslte/common/log.h"
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#include "mac/mac.h"
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#include "mac/ul_harq.h"
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|
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|
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namespace srsue {
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|
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/***********************************************************
|
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*
|
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* HARQ ENTITY
|
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*
|
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*********************************************************/
|
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|
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bool ul_harq_entity::init(srslte::log *log_h_,
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mac_interface_rrc::ue_rnti_t *rntis_,
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mac_interface_rrc::mac_cfg_t *mac_cfg_,
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srslte::timers *timers_db_,
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mux *mux_unit_) {
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log_h = log_h_;
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mux_unit = mux_unit_;
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mac_cfg = mac_cfg_;
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rntis = rntis_;
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timers_db = timers_db_;
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for (uint32_t i=0;i<NOF_HARQ_PROC;i++) {
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if (!proc[i].init(i, this)) {
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return false;
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}
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}
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return true;
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}
|
||||
uint32_t ul_harq_entity::pidof(uint32_t tti) {
|
||||
return (uint32_t) tti%NOF_HARQ_PROC;
|
||||
}
|
||||
|
||||
void ul_harq_entity::start_pcap(srslte::mac_pcap* pcap_)
|
||||
{
|
||||
pcap = pcap_;
|
||||
}
|
||||
|
||||
void ul_harq_entity::reset() {
|
||||
for (uint32_t i=0;i<NOF_HARQ_PROC;i++) {
|
||||
proc[i].reset();
|
||||
}
|
||||
ul_sps_assig.clear();
|
||||
}
|
||||
void ul_harq_entity::reset_ndi() {
|
||||
for (uint32_t i=0;i<NOF_HARQ_PROC;i++) {
|
||||
proc[i].reset_ndi();
|
||||
}
|
||||
}
|
||||
|
||||
int ul_harq_entity::get_current_tbs(uint32_t tti) {
|
||||
int tti_harq = (int) tti-4;
|
||||
if (tti_harq < 0) {
|
||||
tti_harq += 10240;
|
||||
}
|
||||
uint32_t pid_harq = pidof(tti_harq);
|
||||
return proc[pid_harq].get_current_tbs();
|
||||
}
|
||||
|
||||
void ul_harq_entity::set_ack(uint32_t tti, bool ack) {
|
||||
int tti_harq = (int) tti - 4;
|
||||
if (tti_harq < 0) {
|
||||
tti_harq += 10240;
|
||||
}
|
||||
uint32_t pid_harq = pidof(tti_harq);
|
||||
if (proc[pid_harq].has_grant() && (proc[pid_harq].last_tx_tti() <= (uint32_t)tti_harq)) {
|
||||
proc[pid_harq].set_harq_feedback(ack);
|
||||
}
|
||||
}
|
||||
|
||||
void ul_harq_entity::harq_recv(uint32_t tti, bool ack, mac_interface_phy::tb_action_ul_t* action)
|
||||
{
|
||||
set_ack(tti, ack);
|
||||
run_tti(tti, NULL, action);
|
||||
}
|
||||
|
||||
// Implements Section 5.4.1
|
||||
void ul_harq_entity::new_grant_ul(mac_interface_phy::mac_grant_t grant, mac_interface_phy::tb_action_ul_t* action)
|
||||
{
|
||||
if (grant.rnti_type == SRSLTE_RNTI_USER ||
|
||||
grant.rnti_type == SRSLTE_RNTI_TEMP ||
|
||||
grant.rnti_type == SRSLTE_RNTI_RAR)
|
||||
{
|
||||
if (grant.rnti_type == SRSLTE_RNTI_USER && proc[pidof(grant.tti)].is_sps()) {
|
||||
grant.ndi = true;
|
||||
}
|
||||
run_tti(grant.tti, &grant, action);
|
||||
} else if (grant.rnti_type == SRSLTE_RNTI_SPS) {
|
||||
if (grant.ndi) {
|
||||
grant.ndi = proc[pidof(grant.tti)].get_ndi();
|
||||
run_tti(grant.tti, &grant, action);
|
||||
} else {
|
||||
Info("Not implemented\n");
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
void ul_harq_entity::new_grant_ul_ack(mac_interface_phy::mac_grant_t grant, bool ack, mac_interface_phy::tb_action_ul_t* action)
|
||||
{
|
||||
set_ack(grant.tti, ack);
|
||||
new_grant_ul(grant, action);
|
||||
}
|
||||
|
||||
|
||||
|
||||
// Implements Section 5.4.2.1
|
||||
// Called with UL grant
|
||||
void ul_harq_entity::run_tti(uint32_t tti, mac_interface_phy::mac_grant_t *grant, mac_interface_phy::tb_action_ul_t* action)
|
||||
{
|
||||
uint32_t tti_tx = (tti+4)%10240;
|
||||
proc[pidof(tti_tx)].run_tti(tti_tx, grant, action);
|
||||
}
|
||||
|
||||
|
||||
float ul_harq_entity::get_average_retx()
|
||||
{
|
||||
return average_retx;
|
||||
}
|
||||
|
||||
|
||||
/***********************************************************
|
||||
*
|
||||
* HARQ PROCESS
|
||||
*
|
||||
*********************************************************/
|
||||
|
||||
static int rv_of_irv[4] = {0, 2, 3, 1};
|
||||
static int irv_of_rv[4] = {0, 3, 1, 2};
|
||||
|
||||
ul_harq_entity::ul_harq_process::ul_harq_process() {
|
||||
current_tx_nb = 0;
|
||||
current_irv = 0;
|
||||
is_initiated = false;
|
||||
is_grant_configured = false;
|
||||
tti_last_tx = 0;
|
||||
bzero(&cur_grant, sizeof(mac_interface_phy::mac_grant_t));
|
||||
}
|
||||
|
||||
void ul_harq_entity::ul_harq_process::reset() {
|
||||
current_tx_nb = 0;
|
||||
current_irv = 0;
|
||||
tti_last_tx = 0;
|
||||
is_grant_configured = false;
|
||||
bzero(&cur_grant, sizeof(mac_interface_phy::mac_grant_t));
|
||||
}
|
||||
|
||||
bool ul_harq_entity::ul_harq_process::has_grant() {
|
||||
return is_grant_configured;
|
||||
}
|
||||
|
||||
void ul_harq_entity::ul_harq_process::reset_ndi() {
|
||||
ndi = false;
|
||||
}
|
||||
|
||||
bool ul_harq_entity::ul_harq_process::get_ndi()
|
||||
{
|
||||
return ndi;
|
||||
}
|
||||
|
||||
uint32_t ul_harq_entity::ul_harq_process::get_rv()
|
||||
{
|
||||
return rv_of_irv[current_irv%4];
|
||||
}
|
||||
|
||||
void ul_harq_entity::ul_harq_process::set_harq_feedback(bool ack) {
|
||||
harq_feedback = ack;
|
||||
// UL packet successfully delivered
|
||||
if (ack) {
|
||||
Info("UL %d: HARQ = ACK for UL transmission. Discarting TB.\n", pid);
|
||||
reset();
|
||||
} else {
|
||||
Info("UL %d: HARQ = NACK for UL transmission\n", pid);
|
||||
}
|
||||
}
|
||||
|
||||
bool ul_harq_entity::ul_harq_process::init(uint32_t pid_, ul_harq_entity* parent) {
|
||||
if (srslte_softbuffer_tx_init(&softbuffer, 110)) {
|
||||
fprintf(stderr, "Error initiating soft buffer\n");
|
||||
return false;
|
||||
} else {
|
||||
is_initiated = true;
|
||||
harq_entity = parent;
|
||||
log_h = harq_entity->log_h;
|
||||
pid = pid_;
|
||||
payload_buffer = (uint8_t*) srslte_vec_malloc(payload_buffer_len*sizeof(uint8_t));
|
||||
if (!payload_buffer) {
|
||||
Error("Allocating memory\n");
|
||||
return false;
|
||||
}
|
||||
pdu_ptr = payload_buffer;
|
||||
return true;
|
||||
}
|
||||
}
|
||||
|
||||
void ul_harq_entity::ul_harq_process::run_tti(uint32_t tti_tx, mac_interface_phy::mac_grant_t* grant, mac_interface_phy::tb_action_ul_t* action)
|
||||
{
|
||||
|
||||
|
||||
uint32_t max_retx;
|
||||
if (is_msg3) {
|
||||
max_retx = harq_entity->mac_cfg->rach.max_harq_msg3_tx;
|
||||
} else {
|
||||
max_retx = liblte_rrc_max_harq_tx_num[harq_entity->mac_cfg->main.ulsch_cnfg.max_harq_tx];
|
||||
}
|
||||
|
||||
|
||||
// Receive and route HARQ feedbacks
|
||||
if (grant) {
|
||||
if ((!(grant->rnti_type == SRSLTE_RNTI_TEMP) && grant->ndi != get_ndi()) ||
|
||||
(grant->rnti_type == SRSLTE_RNTI_USER && !has_grant()) ||
|
||||
grant->is_from_rar)
|
||||
{
|
||||
// New transmission
|
||||
|
||||
// Uplink grant in a RAR
|
||||
if (grant->is_from_rar) {
|
||||
Debug("Getting Msg3 buffer payload, grant size=%d bytes\n", grant->n_bytes);
|
||||
pdu_ptr = harq_entity->mux_unit->msg3_get(payload_buffer, grant->n_bytes);
|
||||
if (pdu_ptr) {
|
||||
generate_new_tx(tti_tx, true, grant, action);
|
||||
} else {
|
||||
Warning("UL RAR grant available but no Msg3 on buffer\n");
|
||||
}
|
||||
|
||||
// Normal UL grant
|
||||
} else {
|
||||
// Request a MAC PDU from the Multiplexing & Assemble Unit
|
||||
pdu_ptr = harq_entity->mux_unit->pdu_get(payload_buffer, grant->n_bytes, tti_tx, pid);
|
||||
if (pdu_ptr) {
|
||||
generate_new_tx(tti_tx, false, grant, action);
|
||||
} else {
|
||||
Warning("Uplink grant but no MAC PDU in Multiplex Unit buffer\n");
|
||||
}
|
||||
}
|
||||
} else {
|
||||
// Adaptive Re-TX
|
||||
if (current_tx_nb >= max_retx) {
|
||||
Info("UL %d: Maximum number of ReTX reached (%d). Discarting TB.\n", pid, max_retx);
|
||||
reset();
|
||||
action->expect_ack = false;
|
||||
} else {
|
||||
generate_retx(tti_tx, grant, action);
|
||||
}
|
||||
}
|
||||
} else if (has_grant()) {
|
||||
// Non-Adaptive Re-Tx
|
||||
if (current_tx_nb >= max_retx) {
|
||||
Info("UL %d: Maximum number of ReTX reached (%d). Discarting TB.\n", pid, max_retx);
|
||||
reset();
|
||||
action->expect_ack = false;
|
||||
} else {
|
||||
generate_retx(tti_tx, action);
|
||||
}
|
||||
}
|
||||
if (harq_entity->pcap && grant) {
|
||||
if (grant->is_from_rar) {
|
||||
grant->rnti = harq_entity->rntis->temp_rnti;
|
||||
}
|
||||
harq_entity->pcap->write_ul_crnti(pdu_ptr, grant->n_bytes, grant->rnti, get_nof_retx(), tti_tx);
|
||||
}
|
||||
|
||||
|
||||
|
||||
}
|
||||
|
||||
int ul_harq_entity::ul_harq_process::get_current_tbs()
|
||||
{
|
||||
return cur_grant.n_bytes*8;
|
||||
}
|
||||
|
||||
void ul_harq_entity::ul_harq_process::generate_retx(uint32_t tti_tx, mac_interface_phy::tb_action_ul_t *action)
|
||||
{
|
||||
generate_retx(tti_tx, NULL, action);
|
||||
}
|
||||
|
||||
// Retransmission with or w/o grant (Section 5.4.2.2)
|
||||
void ul_harq_entity::ul_harq_process::generate_retx(uint32_t tti_tx, mac_interface_phy::mac_grant_t *grant,
|
||||
mac_interface_phy::tb_action_ul_t *action)
|
||||
{
|
||||
if (grant) {
|
||||
// HARQ entity requests an adaptive transmission
|
||||
if (grant->rv) {
|
||||
current_irv = irv_of_rv[grant->rv%4];
|
||||
}
|
||||
memcpy(&cur_grant, grant, sizeof(mac_interface_phy::mac_grant_t));
|
||||
harq_feedback = false;
|
||||
Info("UL %d: Adaptive retx=%d, RV=%d, TBS=%d\n",
|
||||
pid, current_tx_nb, get_rv(), grant->n_bytes);
|
||||
generate_tx(tti_tx, action);
|
||||
} else {
|
||||
Info("UL %d: Non-Adaptive retx=%d, RV=%d, TBS=%d\n",
|
||||
pid, current_tx_nb, get_rv(), cur_grant.n_bytes);
|
||||
// HARQ entity requests a non-adaptive transmission
|
||||
if (!harq_feedback) {
|
||||
generate_tx(tti_tx, action);
|
||||
}
|
||||
}
|
||||
|
||||
// On every Msg3 retransmission, restart mac-ContentionResolutionTimer as defined in Section 5.1.5
|
||||
if (is_msg3) {
|
||||
harq_entity->timers_db->get(mac::CONTENTION_TIMER)->reset();
|
||||
}
|
||||
|
||||
harq_entity->mux_unit->pusch_retx(tti_tx, pid);
|
||||
}
|
||||
|
||||
// New transmission (Section 5.4.2.2)
|
||||
void ul_harq_entity::ul_harq_process::generate_new_tx(uint32_t tti_tx, bool is_msg3_,
|
||||
mac_interface_phy::mac_grant_t *grant,
|
||||
mac_interface_phy::tb_action_ul_t *action)
|
||||
{
|
||||
if (grant) {
|
||||
|
||||
// Compute average number of retransmissions per packet considering previous packet
|
||||
harq_entity->average_retx = SRSLTE_VEC_CMA((float) current_tx_nb, harq_entity->average_retx, harq_entity->nof_pkts++);
|
||||
|
||||
|
||||
memcpy(&cur_grant, grant, sizeof(mac_interface_phy::mac_grant_t));
|
||||
harq_feedback = false;
|
||||
is_grant_configured = true;
|
||||
current_tx_nb = 0;
|
||||
current_irv = 0;
|
||||
is_msg3 = is_msg3_;
|
||||
Info("UL %d: New TX%s, RV=%d, TBS=%d, RNTI=%d\n",
|
||||
pid, is_msg3?" for Msg3":"", get_rv(), cur_grant.n_bytes, cur_grant.rnti);
|
||||
generate_tx(tti_tx, action);
|
||||
}
|
||||
}
|
||||
|
||||
// Transmission of pending frame (Section 5.4.2.2)
|
||||
void ul_harq_entity::ul_harq_process::generate_tx(uint32_t tti_tx, mac_interface_phy::tb_action_ul_t *action)
|
||||
{
|
||||
action->current_tx_nb = current_tx_nb;
|
||||
current_tx_nb++;
|
||||
action->expect_ack = true;
|
||||
action->rnti = is_msg3?harq_entity->rntis->temp_rnti:cur_grant.rnti;
|
||||
action->rv = cur_grant.rv>0?cur_grant.rv:get_rv();
|
||||
action->softbuffer = &softbuffer;
|
||||
action->tx_enabled = true;
|
||||
action->payload_ptr = pdu_ptr;
|
||||
memcpy(&action->phy_grant, &cur_grant.phy_grant, sizeof(srslte_phy_grant_t));
|
||||
|
||||
current_irv = (current_irv+1)%4;
|
||||
tti_last_tx = tti_tx;
|
||||
}
|
||||
|
||||
bool ul_harq_entity::ul_harq_process::is_sps()
|
||||
{
|
||||
return false;
|
||||
}
|
||||
|
||||
uint32_t ul_harq_entity::ul_harq_process::last_tx_tti()
|
||||
{
|
||||
return tti_last_tx;
|
||||
}
|
||||
|
||||
uint32_t ul_harq_entity::ul_harq_process::get_nof_retx()
|
||||
{
|
||||
return current_tx_nb;
|
||||
}
|
||||
|
||||
}
|
||||
Loading…
Reference in New Issue