mirror of https://github.com/PentHertz/srsLTE.git
Added PRACH example. Added timed send/recv functions to cuhd
This commit is contained in:
parent
31a4edffae
commit
83e3250c29
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@ -80,18 +80,32 @@ LIBLTE_API int cuhd_recv_timed(void *h,
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LIBLTE_API double cuhd_set_tx_srate(void *h,
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LIBLTE_API double cuhd_set_tx_srate(void *h,
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double freq);
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double freq);
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LIBLTE_API void cuhd_set_tx_antenna(void *h,
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char *name);
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LIBLTE_API double cuhd_set_tx_gain(void *h,
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LIBLTE_API double cuhd_set_tx_gain(void *h,
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double gain);
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double gain);
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LIBLTE_API double cuhd_set_tx_freq(void *h,
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LIBLTE_API double cuhd_set_tx_freq(void *h,
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double freq);
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double freq);
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LIBLTE_API double cuhd_set_tx_freq_offset(void *h,
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double freq,
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double off);
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LIBLTE_API int cuhd_send(void *h,
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LIBLTE_API int cuhd_send(void *h,
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void *data,
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void *data,
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uint32_t nsamples,
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uint32_t nsamples,
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bool blocking);
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bool blocking);
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LIBLTE_API int cuhd_send_timed(void *h,
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void *data,
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int nsamples,
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int blocking,
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time_t secs,
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double frac_secs);
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#ifdef __cplusplus
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#ifdef __cplusplus
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}
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}
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#endif
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#endif
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@ -216,9 +216,10 @@ int cuhd_recv(void *h, void *data, uint32_t nsamples, bool blocking)
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int cuhd_recv_timed(void *h,
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int cuhd_recv_timed(void *h,
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void *data,
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void *data,
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uint32_t nsamples,
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uint32_t nsamples,
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int blocking,
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bool blocking,
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time_t *secs,
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time_t *secs,
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double *frac_secs) {
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double *frac_secs)
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{
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cuhd_handler* handler = static_cast<cuhd_handler*>(h);
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cuhd_handler* handler = static_cast<cuhd_handler*>(h);
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uhd::rx_metadata_t md;
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uhd::rx_metadata_t md;
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*secs = -1;
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*secs = -1;
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@ -247,7 +248,11 @@ int cuhd_recv_timed(void *h,
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}
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}
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}
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}
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void cuhd_set_tx_antenna(void *h, char *name)
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{
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cuhd_handler *handler = static_cast < cuhd_handler * >(h);
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handler->usrp->set_tx_antenna(name, 0);
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}
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double cuhd_set_tx_gain(void *h, double gain)
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double cuhd_set_tx_gain(void *h, double gain)
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{
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{
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cuhd_handler *handler = static_cast < cuhd_handler * >(h);
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cuhd_handler *handler = static_cast < cuhd_handler * >(h);
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@ -269,6 +274,13 @@ double cuhd_set_tx_freq(void *h, double freq)
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return handler->usrp->get_tx_freq();
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return handler->usrp->get_tx_freq();
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}
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}
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double cuhd_set_tx_freq_offset(void *h, double freq, double off) {
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cuhd_handler* handler = static_cast<cuhd_handler*>(h);
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handler->usrp->set_tx_freq(uhd::tune_request_t(freq, off));
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return handler->usrp->get_tx_freq();
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}
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int cuhd_send(void *h, void *data, uint32_t nsamples, bool blocking)
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int cuhd_send(void *h, void *data, uint32_t nsamples, bool blocking)
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{
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{
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cuhd_handler *handler = static_cast < cuhd_handler * >(h);
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cuhd_handler *handler = static_cast < cuhd_handler * >(h);
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@ -288,3 +300,31 @@ int cuhd_send(void *h, void *data, uint32_t nsamples, bool blocking)
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return handler->tx_stream->send(data, nsamples, md, 0.0);
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return handler->tx_stream->send(data, nsamples, md, 0.0);
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}
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}
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}
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}
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int cuhd_send_timed(void *h,
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void *data,
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int nsamples,
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int blocking,
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time_t secs,
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double frac_secs) {
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cuhd_handler* handler = static_cast<cuhd_handler*>(h);
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uhd::tx_metadata_t md;
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md.has_time_spec = true;
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md.time_spec = uhd::time_spec_t(secs, frac_secs);
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if (blocking) {
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int n=0,p;
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complex_t *data_c = (complex_t*) data;
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do {
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p=handler->tx_stream->send(&data_c[n], nsamples-n, md);
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md.has_time_spec = false;
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if (p == -1) {
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return -1;
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}
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n+=p;
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} while(n<nsamples);
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return nsamples;
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} else {
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return handler->tx_stream->send(data, nsamples, md, 0.0);
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}
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}
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@ -83,6 +83,9 @@ IF(${CUHD_FIND} GREATER -1)
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add_executable(cell_search cell_search.c cuhd_utils.c)
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add_executable(cell_search cell_search.c cuhd_utils.c)
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target_link_libraries(cell_search lte_rrc lte_phy cuhd )
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target_link_libraries(cell_search lte_rrc lte_phy cuhd )
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add_executable(prach_ue prach_ue.c cuhd_utils.c)
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target_link_libraries(prach_ue lte_rrc lte_phy cuhd)
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add_executable(cell_measurement cell_measurement.c cuhd_utils.c)
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add_executable(cell_measurement cell_measurement.c cuhd_utils.c)
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target_link_libraries(cell_measurement cuhd lte_rrc lte_phy)
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target_link_libraries(cell_measurement cuhd lte_rrc lte_phy)
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@ -120,7 +120,7 @@ int parse_args(prog_args_t *args, int argc, char **argv) {
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/* TODO: Do something with the output data */
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/* TODO: Do something with the output data */
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uint8_t data[10000], data_unpacked[1000];
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uint8_t data[10000], data_unpacked[1000];
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int cuhd_recv_wrapper(void *h, void *data, uint32_t nsamples) {
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int cuhd_recv_wrapper(void *h, void *data, uint32_t nsamples, timestamp_t *q) {
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DEBUG(" ---- Receive %d samples ---- \n", nsamples);
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DEBUG(" ---- Receive %d samples ---- \n", nsamples);
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return cuhd_recv(h, data, nsamples, 1);
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return cuhd_recv(h, data, nsamples, 1);
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}
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}
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@ -196,7 +196,7 @@ int main(int argc, char **argv) {
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fprintf(stderr, "Error initiating ue_sync\n");
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fprintf(stderr, "Error initiating ue_sync\n");
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return -1;
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return -1;
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}
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}
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if (ue_dl_init(&ue_dl, cell, 1234)) {
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if (ue_dl_init(&ue_dl, cell)) {
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fprintf(stderr, "Error initiating UE downlink processing module\n");
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fprintf(stderr, "Error initiating UE downlink processing module\n");
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return -1;
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return -1;
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}
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}
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@ -111,7 +111,7 @@ void parse_args(int argc, char **argv) {
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}
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}
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}
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}
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int cuhd_recv_wrapper(void *h, void *data, uint32_t nsamples) {
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int cuhd_recv_wrapper(void *h, void *data, uint32_t nsamples, timestamp_t *t) {
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DEBUG(" ---- Receive %d samples ---- \n", nsamples);
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DEBUG(" ---- Receive %d samples ---- \n", nsamples);
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return cuhd_recv(h, data, nsamples, 1);
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return cuhd_recv(h, data, nsamples, 1);
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}
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}
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@ -43,7 +43,7 @@
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#ifndef DISABLE_UHD
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#ifndef DISABLE_UHD
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#include "liblte/cuhd/cuhd.h"
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#include "liblte/cuhd/cuhd.h"
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int cuhd_recv_wrapper_cs(void *h, void *data, uint32_t nsamples) {
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int cuhd_recv_wrapper_cs(void *h, void *data, uint32_t nsamples, timestamp_t *t) {
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DEBUG(" ---- Receive %d samples ---- \n", nsamples);
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DEBUG(" ---- Receive %d samples ---- \n", nsamples);
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return cuhd_recv(h, data, nsamples, 1);
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return cuhd_recv(h, data, nsamples, 1);
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}
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}
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@ -107,7 +107,7 @@ void args_default(prog_args_t *args) {
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void usage(prog_args_t *args, char *prog) {
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void usage(prog_args_t *args, char *prog) {
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printf("Usage: %s [agildnruv] -f rx_frequency (in Hz) | -i input_file\n", prog);
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printf("Usage: %s [agildnruv] -f rx_frequency (in Hz) | -i input_file\n", prog);
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#ifndef DISABLE_GRAPHICS
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#ifndef DISABLE_UHD
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printf("\t-a UHD args [Default %s]\n", args->uhd_args);
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printf("\t-a UHD args [Default %s]\n", args->uhd_args);
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printf("\t-g UHD RX gain [Default %.2f dB]\n", args->uhd_gain);
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printf("\t-g UHD RX gain [Default %.2f dB]\n", args->uhd_gain);
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#else
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#else
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@ -202,7 +202,7 @@ void sig_int_handler(int signo)
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}
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}
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#ifndef DISABLE_UHD
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#ifndef DISABLE_UHD
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int cuhd_recv_wrapper(void *h, void *data, uint32_t nsamples) {
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int cuhd_recv_wrapper(void *h, void *data, uint32_t nsamples, timestamp_t *t) {
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DEBUG(" ---- Receive %d samples ---- \n", nsamples);
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DEBUG(" ---- Receive %d samples ---- \n", nsamples);
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return cuhd_recv(h, data, nsamples, 1);
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return cuhd_recv(h, data, nsamples, 1);
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}
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}
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@ -320,11 +320,13 @@ int main(int argc, char **argv) {
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#endif
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#endif
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}
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}
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if (ue_dl_init(&ue_dl, cell, prog_args.rnti==SIRNTI?1:prog_args.rnti)) { // This is the User RNTI
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if (ue_dl_init(&ue_dl, cell)) { // This is the User RNTI
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fprintf(stderr, "Error initiating UE downlink processing module\n");
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fprintf(stderr, "Error initiating UE downlink processing module\n");
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exit(-1);
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exit(-1);
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}
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}
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ue_dl_set_user_rnti(&ue_dl, prog_args.rnti==SIRNTI?1:prog_args.rnti);
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/* Configure downlink receiver for the SI-RNTI since will be the only one we'll use */
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/* Configure downlink receiver for the SI-RNTI since will be the only one we'll use */
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ue_dl_set_rnti(&ue_dl, prog_args.rnti);
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ue_dl_set_rnti(&ue_dl, prog_args.rnti);
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@ -0,0 +1,370 @@
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/**
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*
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* \section COPYRIGHT
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*
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* Copyright 2013-2014 The libLTE Developers. See the
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* COPYRIGHT file at the top-level directory of this distribution.
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*
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* \section LICENSE
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*
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* This file is part of the libLTE library.
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*
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* libLTE is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Lesser 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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* libLTE 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 Lesser General Public License for more details.
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*
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* A copy of the GNU Lesser 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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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <strings.h>
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#include <unistd.h>
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#include <math.h>
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#include <sys/time.h>
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#include <unistd.h>
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#include <assert.h>
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#include <signal.h>
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#include <pthread.h>
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#include <semaphore.h>
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#include "liblte/rrc/rrc.h"
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#include "liblte/phy/phy.h"
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#include "liblte/cuhd/cuhd.h"
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#include "cuhd_utils.h"
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cell_search_cfg_t cell_detect_config = {
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5000,
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100, // nof_frames_total
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16.0 // threshold
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};
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#define B210_DEFAULT_GAIN 40.0
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#define B210_DEFAULT_GAIN_CORREC 110.0 // Gain of the Rx chain when the gain is set to 40
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float gain_offset = B210_DEFAULT_GAIN_CORREC;
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double pss_time_offset = (6/14)*10e-3;
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double prach_time_offset = 4*10e-3; //Subframe 4
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/**********************************************************************
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* Program arguments processing
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***********************************************************************/
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typedef struct {
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int nof_subframes;
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int force_N_id_2;
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uint16_t rnti;
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uint32_t file_nof_prb;
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char *uhd_args;
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float uhd_rx_freq;
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float uhd_tx_freq;
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float uhd_tx_freq_offset;
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float uhd_gain;
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int net_port;
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char *net_address;
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int net_port_signal;
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char *net_address_signal;
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}prog_args_t;
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void args_default(prog_args_t *args) {
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args->nof_subframes = -1;
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args->rnti = SIRNTI;
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args->force_N_id_2 = -1; // Pick the best
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args->file_nof_prb = 6;
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args->uhd_args = "";
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args->uhd_rx_freq = 2112500000.0;
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args->uhd_tx_freq = 1922500000.0;
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args->uhd_tx_freq_offset = 8000000.0;
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args->uhd_gain = 60.0;
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args->net_port = -1;
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args->net_address = "127.0.0.1";
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args->net_port_signal = -1;
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args->net_address_signal = "127.0.0.1";
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}
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void usage(prog_args_t *args, char *prog) {
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printf("Usage: %s [agfFrlnv]\n", prog);
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printf("\t-a UHD args [Default %s]\n", args->uhd_args);
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printf("\t-g UHD TX/RX gain [Default %.2f dB]\n", args->uhd_gain);
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printf("\t-f UHD RX freq [Default %.1f MHz]\n", args->uhd_rx_freq/1000000);
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printf("\t-F UHD TX freq [Default %.1f MHz]\n", args->uhd_tx_freq/1000000);
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printf("\t-r RNTI [Default 0x%x]\n",args->rnti);
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printf("\t-l Force N_id_2 [Default best]\n");
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printf("\t-n nof_subframes [Default %d]\n", args->nof_subframes);
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printf("\t-v [set verbose to debug, default none]\n");
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}
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void parse_args(prog_args_t *args, int argc, char **argv) {
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int opt;
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args_default(args);
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while ((opt = getopt(argc, argv, "agfFrlnv")) != -1) {
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switch (opt) {
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case 'a':
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args->uhd_args = argv[optind];
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break;
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case 'g':
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args->uhd_gain = atof(argv[optind]);
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break;
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case 'f':
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args->uhd_rx_freq = atof(argv[optind]);
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break;
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case 'F':
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args->uhd_tx_freq = atof(argv[optind]);
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break;
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case 'n':
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args->nof_subframes = atoi(argv[optind]);
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break;
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case 'r':
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||||||
|
args->rnti = atoi(argv[optind]);
|
||||||
|
break;
|
||||||
|
case 'l':
|
||||||
|
args->force_N_id_2 = atoi(argv[optind]);
|
||||||
|
break;
|
||||||
|
case 'v':
|
||||||
|
verbose++;
|
||||||
|
break;
|
||||||
|
default:
|
||||||
|
usage(args, argv[0]);
|
||||||
|
exit(-1);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
if (args->uhd_tx_freq < 0 && args->uhd_rx_freq < 0) {
|
||||||
|
usage(args, argv[0]);
|
||||||
|
exit(-1);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
/**********************************************************************/
|
||||||
|
|
||||||
|
/* TODO: Do something with the output data */
|
||||||
|
uint8_t data[20000], data_packed[20000];
|
||||||
|
|
||||||
|
bool go_exit = false;
|
||||||
|
|
||||||
|
void sig_int_handler(int signo)
|
||||||
|
{
|
||||||
|
if (signo == SIGINT) {
|
||||||
|
go_exit = true;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
int cuhd_recv_wrapper_timed(void *h, void *data, uint32_t nsamples, timestamp_t *uhd_time) {
|
||||||
|
DEBUG(" ---- Receive %d samples ---- \n", nsamples);
|
||||||
|
return cuhd_recv_timed(h, data, nsamples, 1, &uhd_time->full_secs, &uhd_time->frac_secs);
|
||||||
|
}
|
||||||
|
|
||||||
|
extern float mean_exec_time;
|
||||||
|
|
||||||
|
enum receiver_state { DECODE_MIB, SEND_PRACH} state;
|
||||||
|
|
||||||
|
#define NOF_PRACH_SEQUENCES 52
|
||||||
|
|
||||||
|
ue_dl_t ue_dl;
|
||||||
|
ue_sync_t ue_sync;
|
||||||
|
prach_t prach;
|
||||||
|
cf_t *prach_buffers[NOF_PRACH_SEQUENCES];
|
||||||
|
int prach_buffer_len;
|
||||||
|
|
||||||
|
prog_args_t prog_args;
|
||||||
|
|
||||||
|
uint32_t sfn = 0; // system frame number
|
||||||
|
cf_t *sf_buffer = NULL;
|
||||||
|
|
||||||
|
|
||||||
|
int generate_prach_sequences(){
|
||||||
|
for(int i=0;i<NOF_PRACH_SEQUENCES;i++){
|
||||||
|
if(prach_gen(&prach, i, 2, prach_buffers[i])){
|
||||||
|
fprintf(stderr, "Error generating prach sequence\n");
|
||||||
|
return -1;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
|
||||||
|
int main(int argc, char **argv) {
|
||||||
|
int ret;
|
||||||
|
lte_cell_t cell;
|
||||||
|
int64_t sf_cnt;
|
||||||
|
ue_mib_t ue_mib;
|
||||||
|
void *uhd;
|
||||||
|
int n;
|
||||||
|
uint8_t bch_payload[BCH_PAYLOAD_LEN], bch_payload_unpacked[BCH_PAYLOAD_LEN];
|
||||||
|
uint32_t sfn_offset;
|
||||||
|
|
||||||
|
parse_args(&prog_args, argc, argv);
|
||||||
|
|
||||||
|
printf("Opening UHD device...\n");
|
||||||
|
if (cuhd_open(prog_args.uhd_args, &uhd)) {
|
||||||
|
fprintf(stderr, "Error opening uhd\n");
|
||||||
|
exit(-1);
|
||||||
|
}
|
||||||
|
/* Set receiver gain */
|
||||||
|
cuhd_set_rx_gain(uhd, prog_args.uhd_gain);
|
||||||
|
cuhd_set_tx_gain(uhd, prog_args.uhd_gain);
|
||||||
|
|
||||||
|
cuhd_set_tx_antenna(uhd, "TX/RX");
|
||||||
|
|
||||||
|
/* set receiver frequency */
|
||||||
|
cuhd_set_rx_freq(uhd, (double) prog_args.uhd_rx_freq);
|
||||||
|
cuhd_rx_wait_lo_locked(uhd);
|
||||||
|
printf("Tunning RX receiver to %.3f MHz\n", (double ) prog_args.uhd_rx_freq/1000000);
|
||||||
|
|
||||||
|
cuhd_set_tx_freq(uhd, prog_args.uhd_tx_freq);
|
||||||
|
cuhd_set_tx_freq_offset(uhd, prog_args.uhd_tx_freq, prog_args.uhd_tx_freq_offset);
|
||||||
|
printf("Tunning TX receiver to %.3f MHz\n", (double ) prog_args.uhd_tx_freq/1000000);
|
||||||
|
|
||||||
|
ret = cuhd_search_and_decode_mib(uhd, &cell_detect_config, prog_args.force_N_id_2, &cell);
|
||||||
|
if (ret < 0) {
|
||||||
|
fprintf(stderr, "Error searching for cell\n");
|
||||||
|
exit(-1);
|
||||||
|
} else if (ret == 0) {
|
||||||
|
printf("Cell not found\n");
|
||||||
|
exit(0);
|
||||||
|
}
|
||||||
|
|
||||||
|
/* set sampling frequency */
|
||||||
|
int srate = lte_sampling_freq_hz(cell.nof_prb);
|
||||||
|
if (srate != -1) {
|
||||||
|
cuhd_set_rx_srate(uhd, (double) srate);
|
||||||
|
cuhd_set_tx_srate(uhd, (double) srate);
|
||||||
|
} else {
|
||||||
|
fprintf(stderr, "Invalid number of PRB %d\n", cell.nof_prb);
|
||||||
|
return LIBLTE_ERROR;
|
||||||
|
}
|
||||||
|
|
||||||
|
INFO("Stopping UHD and flushing buffer...\r",0);
|
||||||
|
cuhd_stop_rx_stream(uhd);
|
||||||
|
cuhd_flush_buffer(uhd);
|
||||||
|
|
||||||
|
if (ue_mib_init(&ue_mib, cell)) {
|
||||||
|
fprintf(stderr, "Error initaiting UE MIB decoder\n");
|
||||||
|
exit(-1);
|
||||||
|
}
|
||||||
|
|
||||||
|
if (prach_init(&prach, lte_symbol_sz(cell.nof_prb), 0, 0, false, 1)) {
|
||||||
|
fprintf(stderr, "Error initializing PRACH\n");
|
||||||
|
return -1;
|
||||||
|
}
|
||||||
|
prach_buffer_len = prach.N_seq + prach.N_cp;
|
||||||
|
for(int i=0;i<NOF_PRACH_SEQUENCES;i++){
|
||||||
|
prach_buffers[i] = (cf_t*)malloc(prach_buffer_len*sizeof(cf_t));
|
||||||
|
if(!prach_buffers[i]) {
|
||||||
|
perror("maloc");
|
||||||
|
return -1;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
generate_prach_sequences();
|
||||||
|
|
||||||
|
state = DECODE_MIB;
|
||||||
|
if (ue_sync_init(&ue_sync, cell, cuhd_recv_wrapper_timed, uhd)) {
|
||||||
|
fprintf(stderr, "Error initiating ue_sync\n");
|
||||||
|
exit(-1);
|
||||||
|
}
|
||||||
|
|
||||||
|
if (ue_dl_init(&ue_dl, cell)) { // This is the User RNTI
|
||||||
|
fprintf(stderr, "Error initiating UE downlink processing module\n");
|
||||||
|
exit(-1);
|
||||||
|
}
|
||||||
|
|
||||||
|
ue_dl_set_user_rnti(&ue_dl, prog_args.rnti==SIRNTI?1:prog_args.rnti);
|
||||||
|
|
||||||
|
/* Configure downlink receiver for the SI-RNTI since will be the only one we'll use */
|
||||||
|
ue_dl_set_rnti(&ue_dl, prog_args.rnti);
|
||||||
|
|
||||||
|
/* Initialize subframe counter */
|
||||||
|
sf_cnt = 0;
|
||||||
|
|
||||||
|
// Register Ctrl+C handler
|
||||||
|
signal(SIGINT, sig_int_handler);
|
||||||
|
|
||||||
|
cuhd_start_rx_stream(uhd);
|
||||||
|
|
||||||
|
timestamp_t uhd_time;
|
||||||
|
timestamp_t next_frame_time;
|
||||||
|
timestamp_t next_prach_time;
|
||||||
|
|
||||||
|
/* Main loop */
|
||||||
|
while (!go_exit && (sf_cnt < prog_args.nof_subframes || prog_args.nof_subframes == -1)) {
|
||||||
|
|
||||||
|
ret = ue_sync_get_buffer(&ue_sync, &sf_buffer);
|
||||||
|
if (ret < 0) {
|
||||||
|
fprintf(stderr, "Error calling ue_sync_work()\n");
|
||||||
|
}
|
||||||
|
|
||||||
|
/* ue_sync_get_buffer returns 1 if successfully read 1 aligned subframe */
|
||||||
|
if (ret == 1) {
|
||||||
|
switch (state) {
|
||||||
|
case DECODE_MIB:
|
||||||
|
if (ue_sync_get_sfidx(&ue_sync) == 0) {
|
||||||
|
pbch_decode_reset(&ue_mib.pbch);
|
||||||
|
n = ue_mib_decode(&ue_mib, sf_buffer, bch_payload_unpacked, NULL, &sfn_offset);
|
||||||
|
if (n < 0) {
|
||||||
|
fprintf(stderr, "Error decoding UE MIB\n");
|
||||||
|
exit(-1);
|
||||||
|
} else if (n == MIB_FOUND) {
|
||||||
|
bit_unpack_vector(bch_payload_unpacked, bch_payload, BCH_PAYLOAD_LEN);
|
||||||
|
bcch_bch_unpack(bch_payload, BCH_PAYLOAD_LEN, &cell, &sfn);
|
||||||
|
printf("Decoded MIB. SFN: %d, offset: %d\n", sfn, sfn_offset);
|
||||||
|
sfn = (sfn + sfn_offset)%1024;
|
||||||
|
state = SEND_PRACH;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
break;
|
||||||
|
case SEND_PRACH:
|
||||||
|
|
||||||
|
ue_sync_get_last_timestamp(&ue_sync, &uhd_time);
|
||||||
|
timestamp_init(&next_frame_time, uhd_time.full_secs, uhd_time.frac_secs);
|
||||||
|
printf("Last frame time = %.6f\n", timestamp_real(&next_frame_time));
|
||||||
|
|
||||||
|
//Tx PRACH every 10 lte dl frames
|
||||||
|
printf("TX PRACH\n");
|
||||||
|
timestamp_copy(&next_prach_time, &next_frame_time);
|
||||||
|
timestamp_add(&next_prach_time, 0, prach_time_offset);
|
||||||
|
cuhd_send_timed(uhd, prach_buffers[7], prach_buffer_len, 0,
|
||||||
|
next_prach_time.full_secs, next_prach_time.frac_secs);
|
||||||
|
|
||||||
|
break;
|
||||||
|
}
|
||||||
|
if (ue_sync_get_sfidx(&ue_sync) == 9) {
|
||||||
|
sfn++;
|
||||||
|
if (sfn == 1024) {
|
||||||
|
sfn = 0;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
} else if (ret == 0) {
|
||||||
|
printf("Finding PSS... Peak: %8.1f, FrameCnt: %d, State: %d\r",
|
||||||
|
sync_get_peak_value(&ue_sync.sfind),
|
||||||
|
ue_sync.frame_total_cnt, ue_sync.state);
|
||||||
|
}
|
||||||
|
|
||||||
|
sf_cnt++;
|
||||||
|
} // Main loop
|
||||||
|
|
||||||
|
ue_dl_free(&ue_dl);
|
||||||
|
ue_sync_free(&ue_sync);
|
||||||
|
|
||||||
|
ue_mib_free(&ue_mib);
|
||||||
|
cuhd_close(uhd);
|
||||||
|
printf("\nBye\n");
|
||||||
|
exit(0);
|
||||||
|
}
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
|
|
@ -0,0 +1,53 @@
|
||||||
|
/**
|
||||||
|
*
|
||||||
|
* \section COPYRIGHT
|
||||||
|
*
|
||||||
|
* Copyright 2013-2014 The libLTE Developers. See the
|
||||||
|
* COPYRIGHT file at the top-level directory of this distribution.
|
||||||
|
*
|
||||||
|
* \section LICENSE
|
||||||
|
*
|
||||||
|
* This file is part of the libLTE library.
|
||||||
|
*
|
||||||
|
* libLTE is free software: you can redistribute it and/or modify
|
||||||
|
* it under the terms of the GNU Lesser General Public License as
|
||||||
|
* published by the Free Software Foundation, either version 3 of
|
||||||
|
* the License, or (at your option) any later version.
|
||||||
|
*
|
||||||
|
* libLTE 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 Lesser General Public License for more details.
|
||||||
|
*
|
||||||
|
* A copy of the GNU Lesser 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/.
|
||||||
|
*
|
||||||
|
*/
|
||||||
|
|
||||||
|
|
||||||
|
#ifndef TIMESTAMP_
|
||||||
|
#define TIMESTAMP_
|
||||||
|
|
||||||
|
#include <time.h>
|
||||||
|
#include "liblte/config.h"
|
||||||
|
|
||||||
|
/*!
|
||||||
|
* A simple timestamp struct with separate variables for full and frac seconds.
|
||||||
|
*
|
||||||
|
* Separate variables are used to avoid loss of precision in our frac seconds.
|
||||||
|
* Only positive timestamps are supported.
|
||||||
|
*/
|
||||||
|
|
||||||
|
typedef struct LIBLTE_API{
|
||||||
|
time_t full_secs;
|
||||||
|
double frac_secs;
|
||||||
|
}timestamp_t;
|
||||||
|
|
||||||
|
LIBLTE_API int timestamp_init(timestamp_t *t, time_t full_secs, double frac_secs);
|
||||||
|
LIBLTE_API int timestamp_copy(timestamp_t *dest, timestamp_t *src);
|
||||||
|
LIBLTE_API int timestamp_add(timestamp_t *t, time_t full_secs, double frac_secs);
|
||||||
|
LIBLTE_API int timestamp_sub(timestamp_t *t, time_t full_secs, double frac_secs);
|
||||||
|
LIBLTE_API double timestamp_real(timestamp_t *t);
|
||||||
|
|
||||||
|
#endif // TIMESTAMP_
|
|
@ -99,4 +99,17 @@ LIBLTE_API int pbch_encode(pbch_t *q,
|
||||||
|
|
||||||
LIBLTE_API void pbch_decode_reset(pbch_t *q);
|
LIBLTE_API void pbch_decode_reset(pbch_t *q);
|
||||||
|
|
||||||
|
LIBLTE_API void pbch_mib_unpack(uint8_t *msg,
|
||||||
|
lte_cell_t *cell,
|
||||||
|
uint32_t *sfn);
|
||||||
|
|
||||||
|
LIBLTE_API void pbch_mib_pack(lte_cell_t *cell,
|
||||||
|
uint32_t sfn,
|
||||||
|
uint8_t *msg);
|
||||||
|
|
||||||
|
LIBLTE_API void pbch_mib_fprint(FILE *stream,
|
||||||
|
lte_cell_t *cell,
|
||||||
|
uint32_t sfn,
|
||||||
|
uint32_t cell_id);
|
||||||
|
|
||||||
#endif // PBCH_
|
#endif // PBCH_
|
||||||
|
|
|
@ -48,6 +48,8 @@
|
||||||
#include "liblte/phy/utils/pack.h"
|
#include "liblte/phy/utils/pack.h"
|
||||||
#include "liblte/phy/utils/vector.h"
|
#include "liblte/phy/utils/vector.h"
|
||||||
|
|
||||||
|
#include "liblte/phy/common/timestamp.h"
|
||||||
|
#include "liblte/phy/common/sequence.h"
|
||||||
#include "liblte/phy/common/phy_common.h"
|
#include "liblte/phy/common/phy_common.h"
|
||||||
#include "liblte/phy/common/fft.h"
|
#include "liblte/phy/common/fft.h"
|
||||||
|
|
||||||
|
|
|
@ -86,12 +86,12 @@ typedef struct LIBLTE_API {
|
||||||
|
|
||||||
|
|
||||||
LIBLTE_API int ue_cell_search_init(ue_cell_search_t *q,
|
LIBLTE_API int ue_cell_search_init(ue_cell_search_t *q,
|
||||||
int (recv_callback)(void*, void*, uint32_t),
|
int (recv_callback)(void*, void*, uint32_t,timestamp_t*),
|
||||||
void *stream_handler);
|
void *stream_handler);
|
||||||
|
|
||||||
LIBLTE_API int ue_cell_search_init_max(ue_cell_search_t *q,
|
LIBLTE_API int ue_cell_search_init_max(ue_cell_search_t *q,
|
||||||
uint32_t max_frames_total,
|
uint32_t max_frames_total,
|
||||||
int (recv_callback)(void*, void*, uint32_t),
|
int (recv_callback)(void*, void*, uint32_t,timestamp_t*),
|
||||||
void *stream_handler);
|
void *stream_handler);
|
||||||
|
|
||||||
LIBLTE_API void ue_cell_search_free(ue_cell_search_t *q);
|
LIBLTE_API void ue_cell_search_free(ue_cell_search_t *q);
|
||||||
|
|
|
@ -81,8 +81,7 @@ typedef struct LIBLTE_API {
|
||||||
|
|
||||||
/* This function shall be called just after the initial synchronization */
|
/* This function shall be called just after the initial synchronization */
|
||||||
LIBLTE_API int ue_dl_init(ue_dl_t *q,
|
LIBLTE_API int ue_dl_init(ue_dl_t *q,
|
||||||
lte_cell_t cell,
|
lte_cell_t cell);
|
||||||
uint16_t user_rnti);
|
|
||||||
|
|
||||||
LIBLTE_API void ue_dl_free(ue_dl_t *q);
|
LIBLTE_API void ue_dl_free(ue_dl_t *q);
|
||||||
|
|
||||||
|
@ -102,4 +101,7 @@ LIBLTE_API void ue_dl_reset(ue_dl_t *q);
|
||||||
LIBLTE_API void ue_dl_set_rnti(ue_dl_t *q,
|
LIBLTE_API void ue_dl_set_rnti(ue_dl_t *q,
|
||||||
uint16_t rnti);
|
uint16_t rnti);
|
||||||
|
|
||||||
|
LIBLTE_API void ue_dl_set_user_rnti(ue_dl_t *q,
|
||||||
|
uint16_t user_rnti);
|
||||||
|
|
||||||
#endif
|
#endif
|
|
@ -104,7 +104,7 @@ typedef struct {
|
||||||
LIBLTE_API int ue_mib_sync_init(ue_mib_sync_t *q,
|
LIBLTE_API int ue_mib_sync_init(ue_mib_sync_t *q,
|
||||||
uint32_t cell_id,
|
uint32_t cell_id,
|
||||||
lte_cp_t cp,
|
lte_cp_t cp,
|
||||||
int (recv_callback)(void*, void*, uint32_t),
|
int (recv_callback)(void*, void*, uint32_t, timestamp_t *),
|
||||||
void *stream_handler);
|
void *stream_handler);
|
||||||
|
|
||||||
LIBLTE_API void ue_mib_sync_free(ue_mib_sync_t *q);
|
LIBLTE_API void ue_mib_sync_free(ue_mib_sync_t *q);
|
||||||
|
|
|
@ -36,6 +36,7 @@
|
||||||
#include "liblte/phy/ch_estimation/chest_dl.h"
|
#include "liblte/phy/ch_estimation/chest_dl.h"
|
||||||
#include "liblte/phy/phch/pbch.h"
|
#include "liblte/phy/phch/pbch.h"
|
||||||
#include "liblte/phy/common/fft.h"
|
#include "liblte/phy/common/fft.h"
|
||||||
|
#include "liblte/phy/common/timestamp.h"
|
||||||
#include "liblte/phy/io/filesource.h"
|
#include "liblte/phy/io/filesource.h"
|
||||||
|
|
||||||
/**************************************************************
|
/**************************************************************
|
||||||
|
@ -64,7 +65,8 @@ typedef struct LIBLTE_API {
|
||||||
sync_t strack;
|
sync_t strack;
|
||||||
|
|
||||||
void *stream;
|
void *stream;
|
||||||
int (*recv_callback)(void*, void*, uint32_t);
|
int (*recv_callback)(void*, void*, uint32_t, timestamp_t*);
|
||||||
|
timestamp_t last_timestamp;
|
||||||
|
|
||||||
filesource_t file_source;
|
filesource_t file_source;
|
||||||
bool file_mode;
|
bool file_mode;
|
||||||
|
@ -105,7 +107,7 @@ typedef struct LIBLTE_API {
|
||||||
|
|
||||||
LIBLTE_API int ue_sync_init(ue_sync_t *q,
|
LIBLTE_API int ue_sync_init(ue_sync_t *q,
|
||||||
lte_cell_t cell,
|
lte_cell_t cell,
|
||||||
int (recv_callback)(void*, void*, uint32_t),
|
int (recv_callback)(void*, void*, uint32_t, timestamp_t*),
|
||||||
void *stream_handler);
|
void *stream_handler);
|
||||||
|
|
||||||
LIBLTE_API int ue_sync_init_file(ue_sync_t *q,
|
LIBLTE_API int ue_sync_init_file(ue_sync_t *q,
|
||||||
|
@ -135,6 +137,8 @@ LIBLTE_API float ue_sync_get_cfo(ue_sync_t *q);
|
||||||
|
|
||||||
LIBLTE_API float ue_sync_get_sfo(ue_sync_t *q);
|
LIBLTE_API float ue_sync_get_sfo(ue_sync_t *q);
|
||||||
|
|
||||||
|
LIBLTE_API void ue_sync_get_last_timestamp(ue_sync_t *q,
|
||||||
|
timestamp_t *timestamp);
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
|
|
@ -29,6 +29,10 @@
|
||||||
#ifndef VECTOR_
|
#ifndef VECTOR_
|
||||||
#define VECTOR_
|
#define VECTOR_
|
||||||
|
|
||||||
|
#ifdef __cplusplus
|
||||||
|
extern "C" {
|
||||||
|
#endif
|
||||||
|
|
||||||
#include <stdio.h>
|
#include <stdio.h>
|
||||||
#include <stdint.h>
|
#include <stdint.h>
|
||||||
#include "liblte/config.h"
|
#include "liblte/config.h"
|
||||||
|
@ -137,4 +141,8 @@ LIBLTE_API void vec_abs_square_cf(cf_t *x, float *abs_square, uint32_t len);
|
||||||
/* argument of each vector element */
|
/* argument of each vector element */
|
||||||
LIBLTE_API void vec_arg_cf(cf_t *x, float *arg, uint32_t len);
|
LIBLTE_API void vec_arg_cf(cf_t *x, float *arg, uint32_t len);
|
||||||
|
|
||||||
|
#ifdef __cplusplus
|
||||||
|
}
|
||||||
|
#endif
|
||||||
|
|
||||||
#endif // VECTOR_
|
#endif // VECTOR_
|
||||||
|
|
|
@ -0,0 +1,82 @@
|
||||||
|
/**
|
||||||
|
*
|
||||||
|
* \section COPYRIGHT
|
||||||
|
*
|
||||||
|
* Copyright 2013-2014 The libLTE Developers. See the
|
||||||
|
* COPYRIGHT file at the top-level directory of this distribution.
|
||||||
|
*
|
||||||
|
* \section LICENSE
|
||||||
|
*
|
||||||
|
* This file is part of the libLTE library.
|
||||||
|
*
|
||||||
|
* libLTE is free software: you can redistribute it and/or modify
|
||||||
|
* it under the terms of the GNU Lesser General Public License as
|
||||||
|
* published by the Free Software Foundation, either version 3 of
|
||||||
|
* the License, or (at your option) any later version.
|
||||||
|
*
|
||||||
|
* libLTE 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 Lesser General Public License for more details.
|
||||||
|
*
|
||||||
|
* A copy of the GNU Lesser 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/.
|
||||||
|
*
|
||||||
|
*/
|
||||||
|
|
||||||
|
#include "liblte/phy/common/timestamp.h"
|
||||||
|
#include "math.h"
|
||||||
|
|
||||||
|
int timestamp_init(timestamp_t *t, time_t full_secs, double frac_secs){
|
||||||
|
int ret = LIBLTE_ERROR;
|
||||||
|
if(t != NULL && frac_secs >= 0.0){
|
||||||
|
t->full_secs = full_secs;
|
||||||
|
t->frac_secs = frac_secs;
|
||||||
|
ret = LIBLTE_SUCCESS;
|
||||||
|
}
|
||||||
|
return ret;
|
||||||
|
}
|
||||||
|
|
||||||
|
int timestamp_copy(timestamp_t *dest, timestamp_t *src){
|
||||||
|
int ret = LIBLTE_ERROR;
|
||||||
|
if(dest != NULL && src != NULL){
|
||||||
|
dest->full_secs = src->full_secs;
|
||||||
|
dest->frac_secs = src->frac_secs;
|
||||||
|
ret = LIBLTE_SUCCESS;
|
||||||
|
}
|
||||||
|
return ret;
|
||||||
|
}
|
||||||
|
|
||||||
|
int timestamp_add(timestamp_t *t, time_t full_secs, double frac_secs){
|
||||||
|
int ret = LIBLTE_ERROR;
|
||||||
|
if(t != NULL && frac_secs >= 0.0){
|
||||||
|
t->frac_secs += frac_secs;
|
||||||
|
t->full_secs += full_secs;
|
||||||
|
double r = floor(t->frac_secs);
|
||||||
|
t->full_secs += r;
|
||||||
|
t->frac_secs -= r;
|
||||||
|
ret = LIBLTE_SUCCESS;
|
||||||
|
}
|
||||||
|
return ret;
|
||||||
|
}
|
||||||
|
|
||||||
|
int timestamp_sub(timestamp_t *t, time_t full_secs, double frac_secs){
|
||||||
|
int ret = LIBLTE_ERROR;
|
||||||
|
if(t != NULL && frac_secs >= 0.0){
|
||||||
|
t->frac_secs -= frac_secs;
|
||||||
|
t->full_secs -= full_secs;
|
||||||
|
if(t->frac_secs < 0){
|
||||||
|
t->frac_secs = 1-t->frac_secs;
|
||||||
|
t->full_secs--;
|
||||||
|
}
|
||||||
|
if(t->full_secs < 0)
|
||||||
|
return LIBLTE_ERROR;
|
||||||
|
ret = LIBLTE_SUCCESS;
|
||||||
|
}
|
||||||
|
return ret;
|
||||||
|
}
|
||||||
|
|
||||||
|
double timestamp_real(timestamp_t *t){
|
||||||
|
return t->frac_secs + t->full_secs;
|
||||||
|
}
|
|
@ -241,6 +241,116 @@ void pbch_free(pbch_t *q) {
|
||||||
|
|
||||||
}
|
}
|
||||||
|
|
||||||
|
|
||||||
|
/** Unpacks MIB from PBCH message.
|
||||||
|
* msg buffer must be 24 byte length at least
|
||||||
|
*/
|
||||||
|
void pbch_mib_unpack(uint8_t *msg, lte_cell_t *cell, uint32_t *sfn) {
|
||||||
|
int bw, phich_res;
|
||||||
|
|
||||||
|
bw = bit_unpack(&msg, 3);
|
||||||
|
switch (bw) {
|
||||||
|
case 0:
|
||||||
|
cell->nof_prb = 6;
|
||||||
|
break;
|
||||||
|
case 1:
|
||||||
|
cell->nof_prb = 15;
|
||||||
|
break;
|
||||||
|
default:
|
||||||
|
cell->nof_prb = (bw - 1) * 25;
|
||||||
|
break;
|
||||||
|
}
|
||||||
|
if (*msg) {
|
||||||
|
cell->phich_length = PHICH_EXT;
|
||||||
|
} else {
|
||||||
|
cell->phich_length = PHICH_NORM;
|
||||||
|
}
|
||||||
|
msg++;
|
||||||
|
|
||||||
|
phich_res = bit_unpack(&msg, 2);
|
||||||
|
switch (phich_res) {
|
||||||
|
case 0:
|
||||||
|
cell->phich_resources = R_1_6;
|
||||||
|
break;
|
||||||
|
case 1:
|
||||||
|
cell->phich_resources = R_1_2;
|
||||||
|
break;
|
||||||
|
case 2:
|
||||||
|
cell->phich_resources = R_1;
|
||||||
|
break;
|
||||||
|
case 3:
|
||||||
|
cell->phich_resources = R_2;
|
||||||
|
break;
|
||||||
|
}
|
||||||
|
if (sfn) {
|
||||||
|
*sfn = bit_unpack(&msg, 8) << 2;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
/** Unpacks MIB from PBCH message.
|
||||||
|
* msg buffer must be 24 byte length at least
|
||||||
|
*/
|
||||||
|
void pbch_mib_pack(lte_cell_t *cell, uint32_t sfn, uint8_t *msg) {
|
||||||
|
int bw, phich_res = 0;
|
||||||
|
|
||||||
|
bzero(msg, 24);
|
||||||
|
|
||||||
|
if (cell->nof_prb <= 6) {
|
||||||
|
bw = 0;
|
||||||
|
} else if (cell->nof_prb <= 15) {
|
||||||
|
bw = 1;
|
||||||
|
} else {
|
||||||
|
bw = 1 + cell->nof_prb / 25;
|
||||||
|
}
|
||||||
|
bit_pack(bw, &msg, 3);
|
||||||
|
|
||||||
|
*msg = cell->phich_length == PHICH_EXT;
|
||||||
|
msg++;
|
||||||
|
|
||||||
|
switch (cell->phich_resources) {
|
||||||
|
case R_1_6:
|
||||||
|
phich_res = 0;
|
||||||
|
break;
|
||||||
|
case R_1_2:
|
||||||
|
phich_res = 1;
|
||||||
|
break;
|
||||||
|
case R_1:
|
||||||
|
phich_res = 2;
|
||||||
|
break;
|
||||||
|
case R_2:
|
||||||
|
phich_res = 3;
|
||||||
|
break;
|
||||||
|
}
|
||||||
|
bit_pack(phich_res, &msg, 2);
|
||||||
|
bit_pack(sfn >> 2, &msg, 8);
|
||||||
|
}
|
||||||
|
|
||||||
|
void pbch_mib_fprint(FILE *stream, lte_cell_t *cell, uint32_t sfn, uint32_t cell_id) {
|
||||||
|
printf(" - Cell ID: %d\n", cell_id);
|
||||||
|
printf(" - Nof ports: %d\n", cell->nof_ports);
|
||||||
|
printf(" - PRB: %d\n", cell->nof_prb);
|
||||||
|
printf(" - PHICH Length: %s\n",
|
||||||
|
cell->phich_length == PHICH_EXT ? "Extended" : "Normal");
|
||||||
|
printf(" - PHICH Resources: ");
|
||||||
|
switch (cell->phich_resources) {
|
||||||
|
case R_1_6:
|
||||||
|
printf("1/6");
|
||||||
|
break;
|
||||||
|
case R_1_2:
|
||||||
|
printf("1/2");
|
||||||
|
break;
|
||||||
|
case R_1:
|
||||||
|
printf("1");
|
||||||
|
break;
|
||||||
|
case R_2:
|
||||||
|
printf("2");
|
||||||
|
break;
|
||||||
|
}
|
||||||
|
printf("\n");
|
||||||
|
printf(" - SFN: %d\n", sfn);
|
||||||
|
}
|
||||||
|
|
||||||
|
|
||||||
void pbch_decode_reset(pbch_t *q) {
|
void pbch_decode_reset(pbch_t *q) {
|
||||||
q->frame_idx = 0;
|
q->frame_idx = 0;
|
||||||
}
|
}
|
||||||
|
|
|
@ -39,13 +39,13 @@
|
||||||
float tmp_pss_corr[32*10000];
|
float tmp_pss_corr[32*10000];
|
||||||
float tmp_sss_corr[31*10000];
|
float tmp_sss_corr[31*10000];
|
||||||
|
|
||||||
int ue_cell_search_init(ue_cell_search_t * q, int (recv_callback)(void*, void*, uint32_t), void *stream_handler)
|
int ue_cell_search_init(ue_cell_search_t * q, int (recv_callback)(void*, void*, uint32_t,timestamp_t*), void *stream_handler)
|
||||||
{
|
{
|
||||||
return ue_cell_search_init_max(q, CS_DEFAULT_MAXFRAMES_TOTAL, recv_callback, stream_handler);
|
return ue_cell_search_init_max(q, CS_DEFAULT_MAXFRAMES_TOTAL, recv_callback, stream_handler);
|
||||||
}
|
}
|
||||||
|
|
||||||
int ue_cell_search_init_max(ue_cell_search_t * q, uint32_t max_frames,
|
int ue_cell_search_init_max(ue_cell_search_t * q, uint32_t max_frames,
|
||||||
int (recv_callback)(void*, void*, uint32_t), void *stream_handler)
|
int (recv_callback)(void*, void*, uint32_t,timestamp_t*), void *stream_handler)
|
||||||
{
|
{
|
||||||
int ret = LIBLTE_ERROR_INVALID_INPUTS;
|
int ret = LIBLTE_ERROR_INVALID_INPUTS;
|
||||||
|
|
||||||
|
@ -270,9 +270,6 @@ int ue_cell_search_scan_N_id_2(ue_cell_search_t * q, uint32_t N_id_2, ue_cell_se
|
||||||
ret = 1; // A cell has been found.
|
ret = 1; // A cell has been found.
|
||||||
if (found_cell) {
|
if (found_cell) {
|
||||||
get_cell(q, nof_detected_frames, found_cell);
|
get_cell(q, nof_detected_frames, found_cell);
|
||||||
printf("Found CELL PHYID: %d, CP: %s, PSR: %.1f, Absolute Peak: %.1f dBm, Reliability: %.0f \%\n",
|
|
||||||
found_cell->cell_id, lte_cp_string(found_cell->cp),
|
|
||||||
found_cell->psr, 10*log10(found_cell->peak*1000), 100*found_cell->mode);
|
|
||||||
}
|
}
|
||||||
} else {
|
} else {
|
||||||
ret = 0; // A cell was not found.
|
ret = 0; // A cell was not found.
|
||||||
|
|
|
@ -39,8 +39,7 @@
|
||||||
#define MAX_CANDIDATES 64
|
#define MAX_CANDIDATES 64
|
||||||
|
|
||||||
int ue_dl_init(ue_dl_t *q,
|
int ue_dl_init(ue_dl_t *q,
|
||||||
lte_cell_t cell,
|
lte_cell_t cell)
|
||||||
uint16_t user_rnti)
|
|
||||||
{
|
{
|
||||||
int ret = LIBLTE_ERROR_INVALID_INPUTS;
|
int ret = LIBLTE_ERROR_INVALID_INPUTS;
|
||||||
|
|
||||||
|
@ -52,7 +51,7 @@ int ue_dl_init(ue_dl_t *q,
|
||||||
bzero(q, sizeof(ue_dl_t));
|
bzero(q, sizeof(ue_dl_t));
|
||||||
|
|
||||||
q->cell = cell;
|
q->cell = cell;
|
||||||
q->user_rnti = user_rnti;
|
q->user_rnti = 0;
|
||||||
q->pkt_errors = 0;
|
q->pkt_errors = 0;
|
||||||
q->pkts_total = 0;
|
q->pkts_total = 0;
|
||||||
|
|
||||||
|
@ -144,6 +143,10 @@ void ue_dl_free(ue_dl_t *q) {
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
|
|
||||||
|
void ue_dl_set_user_rnti(ue_dl_t *q, uint16_t user_rnti) {
|
||||||
|
q->user_rnti = user_rnti;
|
||||||
|
}
|
||||||
|
|
||||||
void ue_dl_set_rnti(ue_dl_t *q, uint16_t rnti) {
|
void ue_dl_set_rnti(ue_dl_t *q, uint16_t rnti) {
|
||||||
q->current_rnti = rnti;
|
q->current_rnti = rnti;
|
||||||
pdsch_set_rnti(&q->pdsch, rnti);
|
pdsch_set_rnti(&q->pdsch, rnti);
|
||||||
|
@ -217,10 +220,6 @@ int ue_dl_decode_sib(ue_dl_t *q, cf_t *input, uint8_t *data, uint32_t sf_idx, ui
|
||||||
nof_locations = pdcch_ue_locations(&q->pdcch, locations, MAX_CANDIDATES, sf_idx, cfi, q->current_rnti);
|
nof_locations = pdcch_ue_locations(&q->pdcch, locations, MAX_CANDIDATES, sf_idx, cfi, q->current_rnti);
|
||||||
formats = ue_formats;
|
formats = ue_formats;
|
||||||
nof_formats = nof_ue_formats;
|
nof_formats = nof_ue_formats;
|
||||||
if (q->current_rnti == 1234) {
|
|
||||||
nof_locations = 1;
|
|
||||||
nof_formats = 1;
|
|
||||||
}
|
|
||||||
}
|
}
|
||||||
|
|
||||||
/* Extract all PDCCH symbols and get LLRs */
|
/* Extract all PDCCH symbols and get LLRs */
|
||||||
|
|
|
@ -159,7 +159,7 @@ int ue_mib_decode(ue_mib_t * q, cf_t *input,
|
||||||
int ue_mib_sync_init(ue_mib_sync_t *q,
|
int ue_mib_sync_init(ue_mib_sync_t *q,
|
||||||
uint32_t cell_id,
|
uint32_t cell_id,
|
||||||
lte_cp_t cp,
|
lte_cp_t cp,
|
||||||
int (recv_callback)(void*, void*, uint32_t),
|
int (recv_callback)(void*, void*, uint32_t, timestamp_t*),
|
||||||
void *stream_handler)
|
void *stream_handler)
|
||||||
{
|
{
|
||||||
lte_cell_t cell;
|
lte_cell_t cell;
|
||||||
|
|
|
@ -82,7 +82,7 @@ clean_exit:
|
||||||
|
|
||||||
int ue_sync_init(ue_sync_t *q,
|
int ue_sync_init(ue_sync_t *q,
|
||||||
lte_cell_t cell,
|
lte_cell_t cell,
|
||||||
int (recv_callback)(void*, void*, uint32_t),
|
int (recv_callback)(void*, void*, uint32_t,timestamp_t*),
|
||||||
void *stream_handler)
|
void *stream_handler)
|
||||||
{
|
{
|
||||||
int ret = LIBLTE_ERROR_INVALID_INPUTS;
|
int ret = LIBLTE_ERROR_INVALID_INPUTS;
|
||||||
|
@ -201,6 +201,10 @@ void ue_sync_free(ue_sync_t *q) {
|
||||||
bzero(q, sizeof(ue_sync_t));
|
bzero(q, sizeof(ue_sync_t));
|
||||||
}
|
}
|
||||||
|
|
||||||
|
void ue_sync_get_last_timestamp(ue_sync_t *q, timestamp_t *timestamp) {
|
||||||
|
memcpy(timestamp, &q->last_timestamp, sizeof(timestamp_t));
|
||||||
|
}
|
||||||
|
|
||||||
uint32_t ue_sync_peak_idx(ue_sync_t *q) {
|
uint32_t ue_sync_peak_idx(ue_sync_t *q) {
|
||||||
return q->peak_idx;
|
return q->peak_idx;
|
||||||
}
|
}
|
||||||
|
@ -250,7 +254,7 @@ static int find_peak_ok(ue_sync_t *q) {
|
||||||
if (q->frame_find_cnt >= q->nof_avg_find_frames || q->peak_idx < 2*q->fft_size) {
|
if (q->frame_find_cnt >= q->nof_avg_find_frames || q->peak_idx < 2*q->fft_size) {
|
||||||
INFO("Realigning frame, reading %d samples\n", q->peak_idx+q->sf_len/2);
|
INFO("Realigning frame, reading %d samples\n", q->peak_idx+q->sf_len/2);
|
||||||
/* Receive the rest of the subframe so that we are subframe aligned*/
|
/* Receive the rest of the subframe so that we are subframe aligned*/
|
||||||
if (q->recv_callback(q->stream, q->input_buffer, q->peak_idx+q->sf_len/2) < 0) {
|
if (q->recv_callback(q->stream, q->input_buffer, q->peak_idx+q->sf_len/2, &q->last_timestamp) < 0) {
|
||||||
return LIBLTE_ERROR;
|
return LIBLTE_ERROR;
|
||||||
}
|
}
|
||||||
|
|
||||||
|
@ -297,7 +301,7 @@ static int track_peak_ok(ue_sync_t *q, uint32_t track_idx) {
|
||||||
discard the offseted samples to align next frame */
|
discard the offseted samples to align next frame */
|
||||||
if (q->time_offset > 0 && q->time_offset < MAX_TIME_OFFSET) {
|
if (q->time_offset > 0 && q->time_offset < MAX_TIME_OFFSET) {
|
||||||
INFO("\nPositive time offset %d samples. Mean time offset %f.\n", q->time_offset, q->mean_time_offset);
|
INFO("\nPositive time offset %d samples. Mean time offset %f.\n", q->time_offset, q->mean_time_offset);
|
||||||
if (q->recv_callback(q->stream, dummy, (uint32_t) q->time_offset) < 0) {
|
if (q->recv_callback(q->stream, dummy, (uint32_t) q->time_offset, &q->last_timestamp) < 0) {
|
||||||
fprintf(stderr, "Error receiving from USRP\n");
|
fprintf(stderr, "Error receiving from USRP\n");
|
||||||
return LIBLTE_ERROR;
|
return LIBLTE_ERROR;
|
||||||
}
|
}
|
||||||
|
@ -337,7 +341,7 @@ static int receive_samples(ue_sync_t *q) {
|
||||||
}
|
}
|
||||||
|
|
||||||
/* Get N subframes from the USRP getting more samples and keeping the previous samples, if any */
|
/* Get N subframes from the USRP getting more samples and keeping the previous samples, if any */
|
||||||
if (q->recv_callback(q->stream, &q->input_buffer[q->time_offset], q->frame_len - q->time_offset) < 0) {
|
if (q->recv_callback(q->stream, &q->input_buffer[q->time_offset], q->frame_len - q->time_offset, &q->last_timestamp) < 0) {
|
||||||
return LIBLTE_ERROR;
|
return LIBLTE_ERROR;
|
||||||
}
|
}
|
||||||
|
|
||||||
|
|
Loading…
Reference in New Issue