5g-team
/
srsRAN_4G
mirror of https://github.com/pvnis/srsRAN_4G.git
2
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

Added SRS subframe occasion for CS/UE references

Browse Source
master
ismagom 10 years ago
parent e5c1d00a7c
commit f9b7b7827b
6 changed files with 176 additions and 13 deletions
Show Stats Download Patch File Download Diff File

2
srsapps/ue/mac/src/demux.cc
Unescape Escape View File

@ -116,7 +116,7 @@ void demux::push_pdu(uint8_t *mac_pdu, uint32_t nof_bits)
// Unpack DLSCH MAC PDU
mac_msg.init(nof_bits/8);
mac_msg.parse_packet(mac_pdu);
mac_msg.fprint(stdout);
//mac_msg.fprint(stdout);
process_pdu(&mac_msg);
Debug("Normal MAC PDU processed\n");
}

35
srsapps/ue/mac/test/mac_test.cc
Unescape Escape View File

@ -196,12 +196,26 @@ void setup_mac_phy_sib2(LIBLTE_RRC_SYS_INFO_BLOCK_TYPE_2_STRUCT *sib2, srslte::u
sib2->rr_config_common_sib.prach_cnfg.prach_cnfg_info.prach_freq_offset,
sib2->rr_config_common_sib.prach_cnfg.prach_cnfg_info.zero_correlation_zone_config,
sib2->rr_config_common_sib.prach_cnfg.prach_cnfg_info.prach_config_index);
// SRS ConfigCommon
if (sib2->rr_config_common_sib.srs_ul_cnfg.present) {
phy->set_param(srslte::ue::phy_params::SRS_CS_BWCFG, sib2->rr_config_common_sib.srs_ul_cnfg.bw_cnfg);
phy->set_param(srslte::ue::phy_params::SRS_CS_SFCFG, sib2->rr_config_common_sib.srs_ul_cnfg.subfr_cnfg);
phy->set_param(srslte::ue::phy_params::SRS_CS_ACKNACKSIMUL, sib2->rr_config_common_sib.srs_ul_cnfg.ack_nack_simul_tx);
phy->set_param(srslte::ue::phy_params::SRS_IS_CS_CONFIGURED, 1);
}
printf("Set SRS ConfigCommon: BW-Configuration=%d, SF-Configuration=%d, ACKNACK=%d\n",
sib2->rr_config_common_sib.srs_ul_cnfg.bw_cnfg,
sib2->rr_config_common_sib.srs_ul_cnfg.subfr_cnfg,
sib2->rr_config_common_sib.srs_ul_cnfg.ack_nack_simul_tx);
}
void process_connsetup(LIBLTE_RRC_CONNECTION_SETUP_STRUCT *msg, srslte::ue::mac *mac, srslte::ue::phy *phy) {
// FIXME: There's an error parsing the connectionSetup message. This value is hard-coded:
if (msg->rr_cnfg.phy_cnfg_ded_present) {
phy->set_param(srslte::ue::phy_params::PUCCH_N_PUCCH_SR,
msg->rr_cnfg.phy_cnfg_ded.sched_request_cnfg.sr_pucch_resource_idx);
phy->set_param(srslte::ue::phy_params::SR_CONFIG_INDEX,
@ -210,9 +224,26 @@ void process_connsetup(LIBLTE_RRC_CONNECTION_SETUP_STRUCT *msg, srslte::ue::mac
phy->set_param(srslte::ue::phy_params::UCI_I_OFFSET_CQI, msg->rr_cnfg.phy_cnfg_ded.pusch_cnfg_ded.beta_offset_cqi_idx);
phy->set_param(srslte::ue::phy_params::UCI_I_OFFSET_RI, msg->rr_cnfg.phy_cnfg_ded.pusch_cnfg_ded.beta_offset_ri_idx);
printf("Set PHY configuration: n_pucch=%d, configIndex=%d\n",
if (msg->rr_cnfg.phy_cnfg_ded.srs_ul_cnfg_ded_present && msg->rr_cnfg.phy_cnfg_ded.srs_ul_cnfg_ded.setup_present) {
phy->set_param(srslte::ue::phy_params::SRS_UE_CS, msg->rr_cnfg.phy_cnfg_ded.srs_ul_cnfg_ded.cyclic_shift);
phy->set_param(srslte::ue::phy_params::SRS_UE_DURATION, msg->rr_cnfg.phy_cnfg_ded.srs_ul_cnfg_ded.duration);
phy->set_param(srslte::ue::phy_params::SRS_UE_NRRC, msg->rr_cnfg.phy_cnfg_ded.srs_ul_cnfg_ded.freq_domain_pos);
phy->set_param(srslte::ue::phy_params::SRS_UE_BW, msg->rr_cnfg.phy_cnfg_ded.srs_ul_cnfg_ded.srs_bandwidth);
phy->set_param(srslte::ue::phy_params::SRS_UE_CONFIGINDEX, msg->rr_cnfg.phy_cnfg_ded.srs_ul_cnfg_ded.srs_cnfg_idx);
phy->set_param(srslte::ue::phy_params::SRS_UE_HOP, msg->rr_cnfg.phy_cnfg_ded.srs_ul_cnfg_ded.srs_hopping_bandwidth);
phy->set_param(srslte::ue::phy_params::SRS_UE_TXCOMB, msg->rr_cnfg.phy_cnfg_ded.srs_ul_cnfg_ded.tx_comb);
phy->set_param(srslte::ue::phy_params::SRS_BETA, 10);
phy->set_param(srslte::ue::phy_params::SRS_IS_UE_CONFIGURED, 1);
}
}
printf("Set PHY configuration: SR-n_pucch=%d, SR-ConfigIndex=%d, SRS-ConfigIndex=%d, SRS-bw=%d, SRS-Nrcc=%d, SRS-hop=%d, SRS-Ncs=%d\n",
msg->rr_cnfg.phy_cnfg_ded.sched_request_cnfg.sr_pucch_resource_idx,
msg->rr_cnfg.phy_cnfg_ded.sched_request_cnfg.sr_cnfg_idx);
msg->rr_cnfg.phy_cnfg_ded.sched_request_cnfg.sr_cnfg_idx,
msg->rr_cnfg.phy_cnfg_ded.srs_ul_cnfg_ded.srs_cnfg_idx,
msg->rr_cnfg.phy_cnfg_ded.srs_ul_cnfg_ded.srs_bandwidth,
msg->rr_cnfg.phy_cnfg_ded.srs_ul_cnfg_ded.freq_domain_pos,
msg->rr_cnfg.phy_cnfg_ded.srs_ul_cnfg_ded.srs_hopping_bandwidth,
msg->rr_cnfg.phy_cnfg_ded.srs_ul_cnfg_ded.cyclic_shift);
mac->set_param(srslte::ue::mac_params::HARQ_MAXTX,
liblte_rrc_max_harq_tx_num[msg->rr_cnfg.mac_main_cnfg.explicit_value.ulsch_cnfg.max_harq_tx]);

14
srsapps/ue/phy/include/srsapps/ue/phy/phy_params.h
Unescape Escape View File

@ -79,6 +79,20 @@ namespace ue {
SR_CONFIG_INDEX,
SRS_BETA,
SRS_UE_TXCOMB,
SRS_UE_NRRC,
SRS_UE_DURATION,
SRS_UE_CONFIGINDEX,
SRS_UE_BW,
SRS_UE_HOP,
SRS_UE_CS,
SRS_IS_UE_CONFIGURED,
SRS_CS_BWCFG,
SRS_CS_SFCFG,
SRS_CS_ACKNACKSIMUL,
SRS_IS_CS_CONFIGURED,
UCI_I_OFFSET_ACK,
UCI_I_OFFSET_RI,
UCI_I_OFFSET_CQI,

9
srsapps/ue/phy/src/dl_buffer.cc
Unescape Escape View File

@ -116,6 +116,15 @@ bool dl_buffer::get_ul_grant(ul_sched_grant *grant)
if (srslte_ue_dl_find_ul_dci(&ue_dl, &dci_msg, cfi, tti%10, grant->get_rnti()) != 1) {
return false;
}
/*
grant->set_shortened(false);
if (params_db->get_param(phy_params::SRS_IS_CS_CONFIGURED)) {
if (srslte_refsignal_srs_send_cs((uint32_t) params_db->get_param(phy_params::SRS_CS_SFCFG), tti%10) == 1) {
grant->set_shortened(true);
printf("UL grant tti=%d is shortened. SF-CFG=%d\n", tti, (int) params_db->get_param(phy_params::SRS_CS_SFCFG));
}
}
*/
return grant->create_from_dci(&dci_msg, cell, params_db->get_param(phy_params::PUSCH_HOPPING_OFFSET));
}
}

6
srslte/include/srslte/ch_estimation/refsignal_ul.h
Unescape Escape View File

@ -120,4 +120,10 @@ SRSLTE_API void srslte_refsignal_srs_gen(srslte_refsignal_ul_t *q,
uint32_t sf_idx,
cf_t *r_srs);
SRSLTE_API int srslte_refsignal_srs_send_cs(uint32_t subframe_config,
uint32_t sf_idx);
SRSLTE_API int srslte_refsignal_srs_send_ue(uint32_t I_srs,
uint32_t tti);
#endif

103
srslte/lib/ch_estimation/src/refsignal_ul.c
Unescape Escape View File

@ -63,6 +63,11 @@ uint32_t pucch_dmrs_symbol_format1_cpext[2] = {2, 3};
uint32_t pucch_dmrs_symbol_format2_cpnorm[2] = {1, 5};
uint32_t pucch_dmrs_symbol_format2_cpext[1] = {3};
/* Table 5.5.3.3-1: Frame structure type 1 sounding reference signal subframe configuration. */
uint32_t T_sfc[15] = {1, 2, 2, 5, 5, 5, 5, 5, 5, 10, 10, 10, 10, 10, 10};
uint32_t Delta_sfc1[7] = {0, 0, 1, 0, 1, 2, 3};
uint32_t Delta_sfc2[4] = {0, 1, 2, 3};
/** Computes n_prs values used to compute alpha as defined in 5.5.2.1.1 of 36.211 */
static int generate_n_prs(srslte_refsignal_ul_t * q) {
/* Calculate n_prs */
@ -491,3 +496,101 @@ void srslte_refsignal_srs_gen(srslte_refsignal_ul_t *q, uint32_t ns, cf_t *r_srs
{
}
/* Returns 1 if tti is a valid subframe for SRS transmission according to I_srs (UE-specific
* configuration index), as defined in Section 8.1 of 36.213.
* Returns 0 if no SRS shall be transmitted or a negative number if error.
*/
int srslte_refsignal_srs_send_ue(uint32_t I_srs, uint32_t tti) {
if (I_srs < 1024 && tti < 10240) {
uint32_t T_srs = 0;
uint32_t Toffset = 0;
/* This is Table 8.2-1 */
if (I_srs < 2) {
T_srs = 2;
Toffset = I_srs;
} else if (I_srs < 7) {
T_srs = 5;
Toffset = I_srs-2;
} else if (I_srs < 17) {
T_srs = 10;
Toffset = I_srs-7;
} else if (I_srs < 37) {
T_srs = 20;
Toffset = I_srs-17;
} else if (I_srs < 77) {
T_srs = 40;
Toffset = I_srs-37;
} else if (I_srs < 157) {
T_srs = 80;
Toffset = I_srs-77;
} else if (I_srs < 317) {
T_srs = 160;
Toffset = I_srs-157;
} else if (I_srs < 637) {
T_srs = 320;
Toffset = I_srs-317;
} else {
return 0;
}
if (((tti-Toffset)%T_srs) == 0) {
return 1;
} else {
return 0;
}
} else {
return SRSLTE_ERROR_INVALID_INPUTS;
}
}
/* Returns 1 if sf_idx is a valid subframe for SRS transmission according to subframe_config (cell-specific),
* as defined in Section 5.5.3.3 of 36.211. Returns 0 if no SRS shall be transmitted or a negative
* number if error.
*/
int srslte_refsignal_srs_send_cs(uint32_t subframe_config, uint32_t sf_idx) {
if (subframe_config < 15 && sf_idx < 10) {
uint32_t tsfc = T_sfc[subframe_config];
if (subframe_config < 7) {
if ((sf_idx%tsfc)==Delta_sfc1[subframe_config]) {
return 1;
} else {
return 0;
}
} else if (subframe_config == 8) {
if (((sf_idx%tsfc)==0) || ((sf_idx%tsfc)==1)){
return 1;
} else {
return 0;
}
} else if (subframe_config == 9) {
if (((sf_idx%tsfc)==2) || ((sf_idx%tsfc)==3)){
return 1;
} else {
return 0;
}
} else if (subframe_config < 13) {
if ((sf_idx%tsfc)==Delta_sfc2[subframe_config-9]) {
return 1;
} else {
return 0;
}
} else if (subframe_config == 13) {
if (((sf_idx%tsfc)==5) || ((sf_idx%tsfc)==7) || ((sf_idx%tsfc)==9)){
return 0;
} else {
return 1;
}
} else if (subframe_config == 14) {
if (((sf_idx%tsfc)==7) || ((sf_idx%tsfc)==9)) {
return 0;
} else {
return 1;
}
} else {
return 0;
}
} else {
return SRSLTE_ERROR_INVALID_INPUTS;
}
}

Write Preview
Loading…
Cancel
Save