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srsRAN_4G
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Separate PHY interface to add rnti and pregenerate sequences. Calculate the sequences on the reception of ConnectionSetup instead of PRACH

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master
Ismael Gomez 5 years ago
parent d7c7bb382a
commit 270c7ce9dc
8 changed files with 58 additions and 28 deletions
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11
lib/include/srslte/interfaces/enb_interfaces.h
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@ -199,9 +199,8 @@ public:
*
* @param rnti identifier of the user
* @param pcell_index Primary cell (PCell) index
* @param is_temporal Indicates whether the UE is temporal
*/
virtual int add_rnti(uint16_t rnti, uint32_t pcell_index, bool is_temporal) = 0;
virtual int add_rnti(uint16_t rnti, uint32_t pcell_index) = 0;
/**
* Removes an RNTI context from all the physical layer components, including secondary cells
@ -209,6 +208,14 @@ public:
*/
virtual void rem_rnti(uint16_t rnti) = 0;
/**
* Pregenerates the scrambling sequences for a given RNTI.
* WARNING: This function make take several ms to complete.
*
* @param rnti identifier of the user
*/
virtual int pregen_sequences(uint16_t rnti) = 0;
/**
*
* @param stop

3
srsenb/hdr/phy/cc_worker.h
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@ -42,8 +42,9 @@ public:
cf_t* get_buffer_tx(uint32_t antenna_idx);
void set_tti(uint32_t tti);
int add_rnti(uint16_t rnti, bool is_temporal);
int add_rnti(uint16_t rnti);
void rem_rnti(uint16_t rnti);
int pregen_sequences(uint16_t rnti);
uint32_t get_nof_rnti();
/* These are used by the GUI plotting tools */

3
srsenb/hdr/phy/phy.h
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@ -51,8 +51,9 @@ public:
std::string get_type() override { return "lte"; };
/* MAC->PHY interface */
int add_rnti(uint16_t rnti, uint32_t pcell_index, bool is_temporal) override;
int add_rnti(uint16_t rnti, uint32_t pcell_index) override;
void rem_rnti(uint16_t rnti) final;
int pregen_sequences(uint16_t rnti) override;
void set_mch_period_stop(uint32_t stop) final;
void set_activation_deactivation_scell(uint16_t rnti,
const std::array<bool, SRSLTE_MAX_CARRIERS>& activation) override;

3
srsenb/hdr/phy/sf_worker.h
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@ -41,8 +41,9 @@ public:
cf_t* get_buffer_rx(uint32_t cc_idx, uint32_t antenna_idx);
void set_time(uint32_t tti, uint32_t tx_worker_cnt, srslte_timestamp_t tx_time);
int add_rnti(uint16_t rnti, uint32_t cc_idx, bool is_temporal);
int add_rnti(uint16_t rnti, uint32_t cc_idx);
void rem_rnti(uint16_t rnti);
int pregen_sequences(uint16_t rnti);
uint32_t get_nof_rnti();
/* These are used by the GUI plotting tools */

18
srsenb/src/phy/cc_worker.cc
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@ -127,14 +127,14 @@ void cc_worker::init(phy_common* phy_, srslte::log* log_h_, uint32_t cc_idx_)
}
/* Setup SI-RNTI in PHY */
add_rnti(SRSLTE_SIRNTI, false);
add_rnti(SRSLTE_SIRNTI);
/* Setup P-RNTI in PHY */
add_rnti(SRSLTE_PRNTI, false);
add_rnti(SRSLTE_PRNTI);
/* Setup RA-RNTI in PHY */
for (int i = SRSLTE_RARNTI_START; i <= SRSLTE_RARNTI_END; i++) {
add_rnti(i, false);
add_rnti(i);
}
if (srslte_softbuffer_tx_init(&temp_mbsfn_softbuffer, nof_prb)) {
@ -180,25 +180,25 @@ void cc_worker::set_tti(uint32_t tti_)
tti_tx_ul = TTI_RX_ACK(tti_rx);
}
int cc_worker::add_rnti(uint16_t rnti, bool is_temporal)
int cc_worker::pregen_sequences(uint16_t rnti)
{
if (not is_temporal) {
if (srslte_enb_dl_add_rnti(&enb_dl, rnti)) {
return -1;
}
if (srslte_enb_ul_add_rnti(&enb_ul, rnti)) {
return -1;
}
return SRSLTE_SUCCESS;
}
mutex.lock();
int cc_worker::add_rnti(uint16_t rnti)
{
std::unique_lock<std::mutex> lock(mutex);
// Create user unless already exists
if (ue_db.count(rnti) == 0) {
ue_db[rnti] = new ue(rnti);
}
mutex.unlock();
return SRSLTE_SUCCESS;
}

16
srsenb/src/phy/phy.cc
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@ -150,7 +150,7 @@ void phy::stop()
}
/***** MAC->PHY interface **********/
int phy::add_rnti(uint16_t rnti, uint32_t pcell_index, bool is_temporal)
int phy::add_rnti(uint16_t rnti, uint32_t pcell_index)
{
if (SRSLTE_RNTI_ISUSER(rnti)) {
// Create default PHY configuration with the desired PCell index
@ -161,7 +161,7 @@ int phy::add_rnti(uint16_t rnti, uint32_t pcell_index, bool is_temporal)
}
for (uint32_t i = 0; i < nof_workers; i++) {
if (workers[i].add_rnti(rnti, pcell_index, is_temporal) != SRSLTE_SUCCESS) {
if (workers[i].add_rnti(rnti, pcell_index) != SRSLTE_SUCCESS) {
return SRSLTE_ERROR;
}
}
@ -183,6 +183,16 @@ void phy::rem_rnti(uint16_t rnti)
}
}
int phy::pregen_sequences(uint16_t rnti)
{
for (uint32_t i = 0; i < nof_workers; i++) {
if (workers[i].pregen_sequences(rnti) != SRSLTE_SUCCESS) {
return SRSLTE_ERROR;
}
}
return SRSLTE_SUCCESS;
}
void phy::set_mch_period_stop(uint32_t stop)
{
workers_common.set_mch_period_stop(stop);
@ -241,7 +251,7 @@ void phy::set_config_dedicated(uint16_t rnti, const phy_rrc_dedicated_list_t& de
if (config.configured) {
// Add RNTI to all SF workers
for (uint32_t w = 0; w < nof_workers; w++) {
workers[w].add_rnti(rnti, config.enb_cc_idx, false);
workers[w].add_rnti(rnti, config.enb_cc_idx);
}
}
}

14
srsenb/src/phy/sf_worker.cc
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@ -129,12 +129,22 @@ void sf_worker::set_time(uint32_t tti_, uint32_t tx_worker_cnt_, srslte_timestam
}
}
int sf_worker::add_rnti(uint16_t rnti, uint32_t cc_idx, bool is_temporal)
int sf_worker::pregen_sequences(uint16_t rnti)
{
for (auto& w : cc_workers) {
if (w->pregen_sequences(rnti)) {
return SRSLTE_ERROR;
}
}
return SRSLTE_SUCCESS;
}
int sf_worker::add_rnti(uint16_t rnti, uint32_t cc_idx)
{
int ret = SRSLTE_ERROR;
if (cc_idx < cc_workers.size()) {
cc_workers[cc_idx]->add_rnti(rnti, is_temporal);
cc_workers[cc_idx]->add_rnti(rnti);
ret = SRSLTE_SUCCESS;
}

6
srsenb/src/stack/mac/mac.cc
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@ -212,8 +212,8 @@ int mac::ue_cfg(uint16_t rnti, sched_interface::ue_cfg_t* cfg)
if (not ue_ptr->is_phy_added) {
Info("Registering RNTI=0x%X to PHY...\n", rnti);
// Register new user in PHY with first CC index
if (phy_h->add_rnti(rnti, (SRSLTE_MRNTI) ? 0 : cfg->supported_cc_list.front().enb_cc_idx, false) == SRSLTE_ERROR) {
Error("Registering new UE RNTI=0x%X to PHY\n", rnti);
if (phy_h->pregen_sequences(rnti) == SRSLTE_ERROR) {
Error("Generating sequences for UE RNTI=0x%X\n", rnti);
}
Info("Done registering RNTI=0x%X to PHY...\n", rnti);
ue_ptr->is_phy_added = true;
@ -524,7 +524,7 @@ void mac::rach_detected(uint32_t tti, uint32_t enb_cc_idx, uint32_t preamble_idx
rrc_h->add_user(rnti, ue_cfg);
// Add temporal rnti to the PHY
if (phy_h->add_rnti(rnti, enb_cc_idx, true) != SRSLTE_SUCCESS) {
if (phy_h->add_rnti(rnti, enb_cc_idx) != SRSLTE_SUCCESS) {
Error("Registering temporal-rnti=0x%x to PHY\n", rnti);
return;
}

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