diff --git a/ci-scripts/conf_files/rcc.band38.tm1.50PRB.multi.rru.conf b/ci-scripts/conf_files/rcc.band38.tm1.50PRB.multi.rru.conf
index 9b19536ba0ea52b82d07b9c728487888b9f8c1d2..b3899fdb6af99cac329720914e293cdbefc6e786 100644
--- a/ci-scripts/conf_files/rcc.band38.tm1.50PRB.multi.rru.conf
+++ b/ci-scripts/conf_files/rcc.band38.tm1.50PRB.multi.rru.conf
@@ -193,6 +193,7 @@ RUs = (
att_rx = 20;
eNB_instances = [0];
is_slave = "no";
+ ota_sync_enabled = "yes";
},
{
local_if_name = "enp129s0f0";
@@ -210,6 +211,7 @@ RUs = (
att_rx = 20;
eNB_instances = [0];
is_slave = "yes";
+ ota_sync_enabled = "yes";
}
);
diff --git a/ci-scripts/conf_files/rru.band38.tm1.master.conf b/ci-scripts/conf_files/rru.band38.tm1.master.conf
index 2e4124c421506156aee8e4c9f460c7d0300d9c79..101ce83892e66d3d52ef1a70b55be9c24ca384e4 100644
--- a/ci-scripts/conf_files/rru.band38.tm1.master.conf
+++ b/ci-scripts/conf_files/rru.band38.tm1.master.conf
@@ -15,6 +15,7 @@ RUs = (
max_rxgain = 100;
bands = [38];
is_slave = "no";
+ ota_sync_enabled = "yes";
}
);
diff --git a/ci-scripts/conf_files/rru.band38.tm1.slave.conf b/ci-scripts/conf_files/rru.band38.tm1.slave.conf
index e4c65e148e537f7f7e017871f117ff186da6ce9d..d5efe6bd61ae925e9c08cf12350a6635abbcec27 100644
--- a/ci-scripts/conf_files/rru.band38.tm1.slave.conf
+++ b/ci-scripts/conf_files/rru.band38.tm1.slave.conf
@@ -15,6 +15,7 @@ RUs = (
max_rxgain = 100;
bands = [38];
is_slave = "yes";
+ ota_sync_enabled = "yes";
}
);
diff --git a/openair1/PHY/defs_eNB.h b/openair1/PHY/defs_eNB.h
index f7123d6b43b72b06ce88fbd317a70174a0691162..e5ed607ea2f338582624fc9c3ac260ec8b5ee886 100644
--- a/openair1/PHY/defs_eNB.h
+++ b/openair1/PHY/defs_eNB.h
@@ -339,6 +339,8 @@ typedef struct RU_t_s{
int north_out_cnt;
/// flag to indicate the RU is a slave to another source
int is_slave;
+ /// flag to indicate if the RU has to perform OTA sync
+ int ota_sync_enable;
/// flag to indicate that the RU should generate the DMRS sequence in slot 2 (subframe 1) for OTA synchronization and calibration
int generate_dmrs_sync;
/// flag to indicate if the RU has a control channel
diff --git a/openair2/ENB_APP/enb_paramdef.h b/openair2/ENB_APP/enb_paramdef.h
index 63aeee09e45afa8a0b00a4b58204d4ad1a6c734c..2caba47e2b6d77592e8ffe8cc7b79ff36fae647f 100644
--- a/openair2/ENB_APP/enb_paramdef.h
+++ b/openair2/ENB_APP/enb_paramdef.h
@@ -104,6 +104,7 @@ typedef enum {
#define CONFIG_STRING_RU_SDR_CLK_SRC "clock_src"
#define CONFIG_STRING_RU_SF_EXTENSION "sf_extension"
#define CONFIG_STRING_RU_END_OF_BURST_DELAY "end_of_burst_delay"
+#define CONFIG_STRING_RU_OTA_SYNC_ENABLE "ota_sync_enabled"
#define RU_LOCAL_IF_NAME_IDX 0
#define RU_LOCAL_ADDRESS_IDX 1
@@ -128,6 +129,7 @@ typedef enum {
#define RU_SDR_CLK_SRC 20
#define RU_SF_EXTENSION_IDX 21
#define RU_END_OF_BURST_DELAY_IDX 22
+#define RU_OTA_SYNC_ENABLE_IDX 23
@@ -153,12 +155,13 @@ typedef enum {
{CONFIG_STRING_RU_ENB_LIST, NULL, 0, uptr:NULL, defintarrayval:DEFENBS, TYPE_INTARRAY, 1}, \
{CONFIG_STRING_RU_ATT_TX, NULL, 0, uptr:NULL, defintval:0, TYPE_UINT, 0}, \
{CONFIG_STRING_RU_ATT_RX, NULL, 0, uptr:NULL, defintval:0, TYPE_UINT, 0}, \
-{CONFIG_STRING_RU_IS_SLAVE, NULL, 0, strptr:NULL, defstrval:"no", TYPE_STRING, 0}, \
+{CONFIG_STRING_RU_IS_SLAVE, NULL, 0, strptr:NULL, defstrval:"no", TYPE_STRING, 0}, \
{CONFIG_STRING_RU_NBIOTRRC_LIST, NULL, 0, uptr:NULL, defintarrayval:DEFENBS, TYPE_INTARRAY, 1}, \
{CONFIG_STRING_RU_SDR_ADDRS, NULL, 0, strptr:NULL, defstrval:"type=b200", TYPE_STRING, 0}, \
{CONFIG_STRING_RU_SDR_CLK_SRC, NULL, 0, strptr:NULL, defstrval:"internal", TYPE_STRING, 0}, \
{CONFIG_STRING_RU_SF_EXTENSION, NULL, 0, uptr:NULL, defuintval:312, TYPE_UINT, 0}, \
{CONFIG_STRING_RU_END_OF_BURST_DELAY, NULL, 0, uptr:NULL, defuintval:400, TYPE_UINT, 0}, \
+{CONFIG_STRING_RU_OTA_SYNC_ENABLE, NULL, 0, strptr:NULL, defstrval:"no", TYPE_STRING, 0}, \
}
/*---------------------------------------------------------------------------------------------------------------------------------------*/
diff --git a/targets/RT/USER/lte-ru.c b/targets/RT/USER/lte-ru.c
index 3ec08ac7b44e30e72b61039d43cdfaa815602a01..89abd124999abc6d964670340d9f57997e7c96ff 100644
--- a/targets/RT/USER/lte-ru.c
+++ b/targets/RT/USER/lte-ru.c
@@ -2633,7 +2633,11 @@ void init_RU(char *rf_config_file, clock_source_t clock_source,clock_source_t ti
// NOTE: multiple CC_id are not handled here yet!
ru->openair0_cfg.clock_source = clock_source;
ru->openair0_cfg.time_source = time_source;
- ru->generate_dmrs_sync = (ru->is_slave == 0) ? 1 : 0;
+ //ru->generate_dmrs_sync = (ru->is_slave == 0) ? 1 : 0;
+ if ((ru->is_slave == 0) && (ru->ota_sync_enable == 1))
+ ru->generate_dmrs_sync = 1;
+ else
+ ru->generate_dmrs_sync = 0;
if (ru->generate_dmrs_sync == 1) {
generate_ul_ref_sigs();
ru->dmrssync = (int16_t*)malloc16_clear(ru->frame_parms.ofdm_symbol_size*2*sizeof(int16_t));
@@ -2920,6 +2924,9 @@ void RCconfig_RU(void) {
printf("RU %d is_slave=%s\n",j,*(RUParamList.paramarray[j][RU_IS_SLAVE_IDX].strptr));
if (strcmp(*(RUParamList.paramarray[j][RU_IS_SLAVE_IDX].strptr), "yes") == 0) RC.ru[j]->is_slave=1;
else RC.ru[j]->is_slave=0;
+ printf("RU %d ota_sync_enabled=%s\n",j,*(RUParamList.paramarray[j][RU_OTA_SYNC_ENABLE_IDX].strptr));
+ if (strcmp(*(RUParamList.paramarray[j][RU_OTA_SYNC_ENABLE_IDX].strptr), "yes") == 0) RC.ru[j]->ota_sync_enable=1;
+ else RC.ru[j]->ota_sync_enable=0;
}
RC.ru[j]->max_pdschReferenceSignalPower = *(RUParamList.paramarray[j][RU_MAX_RS_EPRE_IDX].uptr);;
RC.ru[j]->max_rxgain = *(RUParamList.paramarray[j][RU_MAX_RXGAIN_IDX].uptr);