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sched,feature: Enable setting the target PHR below which the maximum UL grant size starts decreasing

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master
Francisco 3 years ago committed by Francisco Paisana
parent 486823e5de
commit ceaef3523f
10 changed files with 23 additions and 6 deletions
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1
lib/include/srsran/interfaces/enb_rrc_interface_types.h
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@ -61,6 +61,7 @@ struct cell_cfg_t {
int target_pusch_sinr_db;
uint32_t initial_dl_cqi;
bool enable_phr_handling;
int min_phr_thres;
asn1::rrc::mob_ctrl_info_s::t304_e_ t304;
std::vector<scell_cfg_t> scell_list;
rrc_meas_cfg_t meas_cfg;

1
lib/include/srsran/interfaces/sched_interface.h
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@ -80,6 +80,7 @@ public:
/* pusch configuration */
srsran_pusch_hopping_cfg_t pusch_hopping_cfg;
float target_pusch_ul_sinr;
int min_phr_thres;
bool enable_phr_handling;
bool enable_64qam;

5
srsenb/hdr/stack/mac/sched_ue_ctrl/tpc.h
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@ -40,6 +40,7 @@ public:
float target_pucch_snr_dB_ = -1.0,
float target_pusch_sn_dB_ = -1.0,
bool phr_handling_flag_ = false,
int min_phr_thres_ = 0,
uint32_t min_tpc_tti_interval_ = 1,
float ul_snr_avg_alpha = 0.05,
int init_ul_snr_value = 5) :
@ -47,6 +48,7 @@ public:
nof_prb(cell_nof_prb),
target_pucch_snr_dB(target_pucch_snr_dB_),
target_pusch_snr_dB(target_pusch_sn_dB_),
min_phr_thres(min_phr_thres_),
snr_estim_list(
{ul_ch_snr_estim{ul_snr_avg_alpha, init_ul_snr_value}, ul_ch_snr_estim{ul_snr_avg_alpha, init_ul_snr_value}}),
phr_handling_flag(phr_handling_flag_),
@ -83,7 +85,7 @@ public:
max_prbs_cached = PHR_NEG_NOF_PRB;
int phr_x_prb = std::roundf(last_phr + 10.0F * log10f(grant_nof_prbs)); // get what the PHR would be if Nprb=1
for (int n = nof_prb; n > PHR_NEG_NOF_PRB; --n) {
if (phr_x_prb >= 10 * log10f(n)) {
if (phr_x_prb >= 10 * log10f(n) + min_phr_thres) {
max_prbs_cached = n;
break;
}
@ -193,6 +195,7 @@ private:
uint32_t nof_prb;
uint32_t min_tpc_tti_interval = 1;
float target_pucch_snr_dB, target_pusch_snr_dB;
int min_phr_thres;
bool phr_handling_flag;
srslog::basic_logger& logger;

2
srsenb/rr.conf.example
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@ -65,6 +65,8 @@ cell_list =
//meas_gap_offset_subframe = [6, 12, 18, 24, 30];
// target_pusch_sinr = -1;
// target_pucch_sinr = -1;
// enable_phr_handling = false;
// min_phr_thres = 0;
// allowed_meas_bw = 6;
// t304 = 2000; // in msec. possible values: 50, 100, 150, 200, 500, 1000, 2000

1
srsenb/src/enb_cfg_parser.cc
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@ -771,6 +771,7 @@ static int parse_cell_list(all_args_t* args, rrc_cfg_t* rrc_cfg, Setting& root)
HANDLEPARSERCODE(parse_default_field(cell_cfg.target_pusch_sinr_db, cellroot, "target_pusch_sinr", -1));
HANDLEPARSERCODE(parse_default_field(cell_cfg.target_pucch_sinr_db, cellroot, "target_pucch_sinr", -1));
HANDLEPARSERCODE(parse_default_field(cell_cfg.enable_phr_handling, cellroot, "enable_phr_handling", false));
HANDLEPARSERCODE(parse_default_field(cell_cfg.min_phr_thres, cellroot, "min_phr_thres", 0));
parse_default_field(cell_cfg.meas_cfg.allowed_meas_bw, cellroot, "allowed_meas_bw", 6u);
srsran_assert(srsran::is_lte_cell_nof_prb(cell_cfg.meas_cfg.allowed_meas_bw), "Invalid measurement Bandwidth");
HANDLEPARSERCODE(asn1_parsers::default_number_to_enum(

1
srsenb/src/stack/mac/sched_ue_ctrl/sched_ue_cell.cc
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@ -40,6 +40,7 @@ sched_ue_cell::sched_ue_cell(uint16_t rnti_, const sched_cell_params_t& cell_cfg
cell_cfg->cfg.target_pucch_ul_sinr,
cell_cfg->cfg.target_pusch_ul_sinr,
cell_cfg->cfg.enable_phr_handling,
cell_cfg->cfg.min_phr_thres,
cell_cfg->sched_cfg->min_tpc_tti_interval,
cell_cfg->sched_cfg->ul_snr_avg_alpha,
cell_cfg->sched_cfg->init_ul_snr_value),

1
srsenb/src/stack/rrc/rrc.cc
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@ -635,6 +635,7 @@ void rrc::config_mac()
item.target_pucch_ul_sinr = cfg.cell_list[ccidx].target_pucch_sinr_db;
item.target_pusch_ul_sinr = cfg.cell_list[ccidx].target_pusch_sinr_db;
item.enable_phr_handling = cfg.cell_list[ccidx].enable_phr_handling;
item.min_phr_thres = cfg.cell_list[ccidx].min_phr_thres;
item.delta_pucch_shift = cfg.sibs[1].sib2().rr_cfg_common.pucch_cfg_common.delta_pucch_shift.to_number();
item.ncs_an = cfg.sibs[1].sib2().rr_cfg_common.pucch_cfg_common.ncs_an;
item.n1pucch_an = cfg.sibs[1].sib2().rr_cfg_common.pucch_cfg_common.n1_pucch_an;

1
srsenb/test/mac/sched_test_rand.cc
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@ -274,6 +274,7 @@ sched_sim_events rand_sim_params(uint32_t nof_ttis)
sim_gen.sim_args.cell_cfg[0].target_pucch_ul_sinr = pick_random_uniform({10, 15, 20, -1});
sim_gen.sim_args.cell_cfg[0].target_pusch_ul_sinr = pick_random_uniform({10, 15, 20, -1});
sim_gen.sim_args.cell_cfg[0].enable_phr_handling = false;
sim_gen.sim_args.cell_cfg[0].min_phr_thres = 0;
sim_gen.sim_args.default_ue_sim_cfg.ue_cfg = generate_default_ue_cfg();
sim_gen.sim_args.default_ue_sim_cfg.periodic_cqi = true;
sim_gen.sim_args.default_ue_sim_cfg.ue_cfg.maxharq_tx = std::uniform_int_distribution<>{1, 5}(srsenb::get_rand_gen());

2
srsenb/test/mac/sched_test_utils.h
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@ -52,6 +52,8 @@ inline srsenb::sched_interface::cell_cfg_t generate_default_cell_cfg(uint32_t no
cell_cfg.initial_dl_cqi = 6;
cell_cfg.target_pusch_ul_sinr = -1;
cell_cfg.target_pucch_ul_sinr = -1;
cell_cfg.enable_phr_handling = false;
cell_cfg.min_phr_thres = 0;
cell_cfg.nrb_cqi = 1;
cell_cfg.n1pucch_an = 12;
cell_cfg.delta_pucch_shift = 1;

12
srsenb/test/mac/sched_ue_cell_test.cc
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@ -28,6 +28,7 @@ void test_neg_phr_scenario()
sched_interface::cell_cfg_t cell_cfg = generate_default_cell_cfg(50);
cell_cfg.target_pucch_ul_sinr = 20;
cell_cfg.target_pusch_ul_sinr = 20;
cell_cfg.min_phr_thres = 0;
cell_cfg.enable_phr_handling = true;
sched_interface::sched_args_t sched_cfg = {};
sched_cell_params_t cell_params;
@ -37,11 +38,14 @@ void test_neg_phr_scenario()
sched_ue_cell ue_cc(0x46, cell_params, tti_point(0));
ue_cc.set_ue_cfg(ue_cfg);
float snr = 0;
ue_cc.set_ul_snr(tti_point(0), snr, 0);
ue_cc.set_ul_snr(tti_point(0), snr, 1);
float snr = 20;
tti_point tti{0};
for (; ue_cc.tpc_fsm.get_ul_snr_estim(0) < snr - 2; ++tti) {
ue_cc.set_ul_snr(tti, snr, 0);
ue_cc.set_ul_snr(tti, snr, 1);
ue_cc.tpc_fsm.set_phr(-5, 1);
ue_cc.new_tti(tti_point(0));
ue_cc.new_tti(tti);
}
uint32_t req_bytes = 10000;
uint32_t pending_prbs = get_required_prb_ul(ue_cc, req_bytes);

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