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@ -40,8 +40,6 @@ namespace srsenb {
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namespace sched_utils {
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namespace sched_utils {
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const uint32_t conres_ce_size = 6;
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//! Obtains TB size *in bytes* for a given MCS and N_{PRB}
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//! Obtains TB size *in bytes* for a given MCS and N_{PRB}
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uint32_t get_tbs_bytes(uint32_t mcs, uint32_t nof_alloc_prb, bool use_tbs_index_alt, bool is_ul)
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uint32_t get_tbs_bytes(uint32_t mcs, uint32_t nof_alloc_prb, bool use_tbs_index_alt, bool is_ul)
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{
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{
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@ -123,16 +121,8 @@ void sched_ue::set_cfg(const sched_interface::ue_cfg_t& cfg_)
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// update configuration
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// update configuration
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std::vector<sched::ue_cfg_t::cc_cfg_t> prev_supported_cc_list = std::move(cfg.supported_cc_list);
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std::vector<sched::ue_cfg_t::cc_cfg_t> prev_supported_cc_list = std::move(cfg.supported_cc_list);
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sched::ue_cfg_t::conn_state_t prev_state = cfg.conn_state;
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cfg = cfg_;
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cfg = cfg_;
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// update in connection state detected
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if (prev_state != cfg.conn_state) {
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if (cfg.conn_state == sched_interface::ue_cfg_t::ue_id_rx) {
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conres_state = ra_state_t::conres_sched_pending;
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}
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}
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// update bearer cfgs
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// update bearer cfgs
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for (uint32_t i = 0; i < sched_interface::MAX_LC; ++i) {
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for (uint32_t i = 0; i < sched_interface::MAX_LC; ++i) {
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set_bearer_cfg_unlocked(i, cfg.ue_bearers[i]);
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set_bearer_cfg_unlocked(i, cfg.ue_bearers[i]);
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@ -150,9 +140,7 @@ void sched_ue::set_cfg(const sched_interface::ue_cfg_t& cfg_)
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// One carrier was added in the place of another
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// One carrier was added in the place of another
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carriers[ue_idx] = sched_ue_carrier{cfg, (*cell_params_list)[cc_cfg.enb_cc_idx], rnti, ue_idx};
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carriers[ue_idx] = sched_ue_carrier{cfg, (*cell_params_list)[cc_cfg.enb_cc_idx], rnti, ue_idx};
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if (ue_idx == 0) {
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if (ue_idx == 0) {
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// PCell was changed possibly due to handover. Schedule a new ConRes CE to be transmitted after the Msg3
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log_h->info("SCHED: PCell has changed for rnti=0x%x.\n", rnti);
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conres_state = ra_state_t::conres_sched_pending;
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log_h->info("SCHED: PCell has changed for rnti=0x%x. ConRes CE scheduled\n", rnti);
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}
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}
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} else {
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} else {
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// The SCell internal configuration may have changed
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// The SCell internal configuration may have changed
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@ -172,11 +160,8 @@ void sched_ue::reset()
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sr = false;
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sr = false;
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next_tpc_pusch = 1;
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next_tpc_pusch = 1;
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next_tpc_pucch = 1;
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next_tpc_pucch = 1;
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buf_mac = 0;
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buf_ul = 0;
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phy_config_dedicated_enabled = false;
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phy_config_dedicated_enabled = false;
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cqi_request_tti = 0;
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cqi_request_tti = 0;
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conres_state = ra_state_t::msg3_sched_pending;
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carriers.clear();
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carriers.clear();
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// erase all bearers
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// erase all bearers
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@ -237,9 +222,17 @@ void sched_ue::dl_buffer_state(uint8_t lc_id, uint32_t tx_queue, uint32_t retx_q
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}
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}
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}
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}
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void sched_ue::mac_buffer_state(uint32_t ce_code)
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void sched_ue::mac_buffer_state(uint32_t ce_code, uint32_t nof_cmds)
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{
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{
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buf_mac++;
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ce_cmd cmd{(int)ce_code};
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for (uint32_t i = 0; i < nof_cmds; ++i) {
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if (static_cast<srslte::sch_subh::cetype>(cmd.cetype) == srslte::sch_subh::CON_RES_ID) {
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pending_ces.push_front(cmd);
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} else {
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pending_ces.push_back(cmd);
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}
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}
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Info("SCHED: %s for rnti=0x%x needs to be scheduled\n", cmd.to_string().c_str(), rnti);
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}
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}
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void sched_ue::set_sr()
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void sched_ue::set_sr()
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@ -252,14 +245,6 @@ void sched_ue::unset_sr()
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sr = false;
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sr = false;
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}
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}
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void sched_ue::set_needs_ta_cmd(uint32_t nof_ta_cmd_)
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{
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for (uint32_t i = 0; i < nof_ta_cmd_; ++i) {
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pending_ces.emplace_back(srslte::sch_subh::TA_CMD);
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}
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Info("SCHED: rnti=0x%x needs TA CMD\n", rnti);
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}
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bool sched_ue::pucch_sr_collision(uint32_t current_tti, uint32_t n_cce)
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bool sched_ue::pucch_sr_collision(uint32_t current_tti, uint32_t n_cce)
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{
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{
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if (!phy_config_dedicated_enabled) {
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if (!phy_config_dedicated_enabled) {
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@ -469,15 +454,6 @@ int sched_ue::generate_format1(uint32_t pid,
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/* Allocate MAC PDU (subheaders, CEs, and SDUS) */
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/* Allocate MAC PDU (subheaders, CEs, and SDUS) */
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int rem_tbs = tbs;
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int rem_tbs = tbs;
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// Allocate MAC ConRes CE
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if (is_conres_ce_pending()) {
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data->pdu[0][data->nof_pdu_elems[0]].lcid = srslte::sch_subh::CON_RES_ID;
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data->nof_pdu_elems[0]++;
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conres_state = ra_state_t::conres_sent;
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rem_tbs -= sched_utils::conres_ce_size + 1;
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Info("SCHED: Added MAC Contention Resolution CE for rnti=0x%x\n", rnti);
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}
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// Allocate MAC CE CMDs
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// Allocate MAC CE CMDs
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while (cc_idx == 0 and not pending_ces.empty()) {
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while (cc_idx == 0 and not pending_ces.empty()) {
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int toalloc = pending_ces.front().get_req_bytes(cfg);
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int toalloc = pending_ces.front().get_req_bytes(cfg);
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@ -778,18 +754,6 @@ uint32_t sched_ue::get_max_retx()
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return cfg.maxharq_tx;
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return cfg.maxharq_tx;
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}
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}
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bool sched_ue::is_first_dl_tx()
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{
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for (const sched_ue_carrier& c : carriers) {
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for (const auto& h : c.harq_ent.dl_harq_procs()) {
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if (h.nof_tx(0) > 0) {
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return false;
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}
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}
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}
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return true;
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}
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bool sched_ue::needs_cqi(uint32_t tti, uint32_t cc_idx, bool will_be_sent)
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bool sched_ue::needs_cqi(uint32_t tti, uint32_t cc_idx, bool will_be_sent)
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{
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{
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return needs_cqi_unlocked(tti, cc_idx, will_be_sent);
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return needs_cqi_unlocked(tti, cc_idx, will_be_sent);
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@ -816,20 +780,12 @@ bool sched_ue::needs_cqi_unlocked(uint32_t tti, uint32_t cc_idx, bool will_be_se
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return ret;
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return ret;
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}
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}
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bool sched_ue::is_conres_ce_pending() const
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{
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return conres_state == ra_state_t::conres_sched_pending;
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}
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/// Use this function in the dl-metric to get the bytes to be scheduled. It accounts for the UE data,
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/// Use this function in the dl-metric to get the bytes to be scheduled. It accounts for the UE data,
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/// the RAR resources, and headers
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/// the RAR resources, and headers
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/// \return number of bytes to be allocated
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/// \return number of bytes to be allocated
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uint32_t sched_ue::get_pending_dl_new_data_total()
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uint32_t sched_ue::get_pending_dl_new_data_total()
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{
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{
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uint32_t req_bytes = get_pending_dl_new_data();
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uint32_t req_bytes = get_pending_dl_new_data();
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if (is_conres_ce_pending()) {
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req_bytes += sched_utils::conres_ce_size; // Account for ConRes
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}
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if (req_bytes > 0) {
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if (req_bytes > 0) {
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req_bytes += (req_bytes < 128) ? 2 : 3; // consider the header
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req_bytes += (req_bytes < 128) ? 2 : 3; // consider the header
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}
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}
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@ -882,8 +838,7 @@ rbg_range_t sched_ue::get_required_dl_rbgs(uint32_t ue_cc_idx)
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*/
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*/
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std::pair<uint32_t, uint32_t> sched_ue::get_requested_dl_bytes(uint32_t ue_cc_idx)
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std::pair<uint32_t, uint32_t> sched_ue::get_requested_dl_bytes(uint32_t ue_cc_idx)
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{
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{
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const uint32_t ce_subheader_size = 1;
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const uint32_t min_alloc_bytes = 5; // 2 for subheader, and 3 for RLC header
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const uint32_t min_alloc_bytes = 5; // 2 for subheader, and 3 for RLC header
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// Convenience function to compute the number of bytes allocated for a given SDU
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// Convenience function to compute the number of bytes allocated for a given SDU
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auto compute_sdu_total_bytes = [&min_alloc_bytes](uint32_t lcid, uint32_t buffer_bytes) {
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auto compute_sdu_total_bytes = [&min_alloc_bytes](uint32_t lcid, uint32_t buffer_bytes) {
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if (buffer_bytes == 0) {
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if (buffer_bytes == 0) {
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@ -900,7 +855,7 @@ std::pair<uint32_t, uint32_t> sched_ue::get_requested_dl_bytes(uint32_t ue_cc_id
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log_h->error("SRB0 must always be activated for DL\n");
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log_h->error("SRB0 must always be activated for DL\n");
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return {0, 0};
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return {0, 0};
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}
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}
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if (conres_state == ra_state_t::msg3_sched_pending or conres_state == ra_state_t::wait_msg3_ack) {
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if (not carriers[ue_cc_idx].is_active()) {
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return {0, 0};
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return {0, 0};
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}
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}
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@ -913,9 +868,6 @@ std::pair<uint32_t, uint32_t> sched_ue::get_requested_dl_bytes(uint32_t ue_cc_id
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}
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}
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// Add pending CEs
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// Add pending CEs
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if (is_dci_format1 and ue_cc_idx == 0) {
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if (is_dci_format1 and ue_cc_idx == 0) {
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if (is_conres_ce_pending()) {
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sum_ce_data = sched_utils::conres_ce_size + ce_subheader_size;
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}
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for (const auto& ce : pending_ces) {
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for (const auto& ce : pending_ces) {
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sum_ce_data += ce.get_req_bytes(cfg);
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sum_ce_data += ce.get_req_bytes(cfg);
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}
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}
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@ -931,8 +883,8 @@ std::pair<uint32_t, uint32_t> sched_ue::get_requested_dl_bytes(uint32_t ue_cc_id
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/* Set Minimum boundary */
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/* Set Minimum boundary */
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min_data = srb0_data;
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min_data = srb0_data;
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if (is_conres_ce_pending()) {
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if (pending_ces.front().cetype == srslte::sch_subh::CON_RES_ID) {
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min_data += sched_utils::conres_ce_size + ce_subheader_size;
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min_data += pending_ces.front().get_req_bytes(cfg);
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}
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}
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if (min_data == 0) {
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if (min_data == 0) {
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if (sum_ce_data > 0) {
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if (sum_ce_data > 0) {
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@ -951,9 +903,10 @@ std::pair<uint32_t, uint32_t> sched_ue::get_requested_dl_bytes(uint32_t ue_cc_id
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*/
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*/
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uint32_t sched_ue::get_pending_dl_new_data()
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uint32_t sched_ue::get_pending_dl_new_data()
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{
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{
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if (conres_state == ra_state_t::msg3_sched_pending or conres_state == ra_state_t::wait_msg3_ack) {
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if (std::count_if(carriers.begin(), carriers.end(), [](const sched_ue_carrier& cc) { return cc.is_active(); }) == 0) {
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return 0;
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return 0;
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}
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}
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uint32_t pending_data = 0;
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uint32_t pending_data = 0;
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for (int i = 0; i < sched_interface::MAX_LC; i++) {
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for (int i = 0; i < sched_interface::MAX_LC; i++) {
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if (bearer_is_dl(&lch[i])) {
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if (bearer_is_dl(&lch[i])) {
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Francisco Paisana
5 years ago
committed by
Francisco Paisana