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Updated bler table lookup mechanism and logs

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This commit is contained in:
Melissa Elkadi
2021-01-25 14:52:44 -08:00
parent 02571e63bb
commit 78341d9db1
2 changed files with 15 additions and 7 deletions
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openair2/PHY_INTERFACE/phy_stub_UE.c
+14 -6
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@@ -1321,7 +1321,7 @@ void *ue_standalone_pnf_task(void *context)
abort();
}
sf_rnti_mcs[sf].sinr = ch_info->sinr;
LOG_A(MAC, "Received_SINR = %f\n",ch_info->sinr);
LOG_D(MAC, "Received_SINR = %f\n",ch_info->sinr);
}
else
{
@@ -2050,15 +2050,20 @@ static bool did_drop_transport_block(int sf, uint16_t rnti)
static float get_bler_val(uint8_t mcs, int sinr)
{
// 4th col = dropped packets, 5th col = total packets
float bler_val = 0.0;
CHECK_INDEX(bler_data, mcs);
if (sinr < (int)(bler_data[mcs].bler_table[0][0] * 10))
{
LOG_I(MAC, "MCS %d table. SINR is smaller than lowest SINR, bler_val is set based on lowest SINR in table\n", mcs);
return bler_data[mcs].bler_table[0][3];
bler_val = bler_data[mcs].bler_table[0][4] / bler_data[mcs].bler_table[0][5];
return bler_val;
}
if (sinr > (int)(bler_data[mcs].bler_table[bler_data[mcs].length - 1][0] * 10))
{
LOG_I(MAC, "MCS %d table. SINR is greater than largest SINR. bler_val is set based on largest SINR in table\n", mcs);
return bler_data[mcs].bler_table[(bler_data[mcs].length - 1)][3];
bler_val = bler_data[mcs].bler_table[(bler_data[mcs].length - 1)][4] / bler_data[mcs].bler_table[(bler_data[mcs].length - 1)][5];
return bler_val;
}
// Loop through bler table to find sinr_index
for (int i = 0; i < bler_data[mcs].length; i++)
@@ -2066,12 +2071,15 @@ static float get_bler_val(uint8_t mcs, int sinr)
int temp_sinr = (int)(bler_data[mcs].bler_table[i][0] * 10);
if (temp_sinr == sinr)
{
return bler_data[mcs].bler_table[i][3]; // 3rd column containers bler value
bler_val = bler_data[mcs].bler_table[i][4] / bler_data[mcs].bler_table[i][5];
return bler_val;
}
// Linear interpolation when SINR is between indices
if (temp_sinr > sinr)
{
return ((bler_data[mcs].bler_table[i - 1][3] + bler_data[mcs].bler_table[i][3]) / 2);
float bler_val1 = bler_data[mcs].bler_table[i - 1][4] / bler_data[mcs].bler_table[i - 1][5];
float bler_val2 = bler_data[mcs].bler_table[i][4] / bler_data[mcs].bler_table[i][5];
return ((bler_val1 + bler_val2) / 2);
}
}
LOG_E(MAC, "NO SINR INDEX FOUND!\n");
@@ -2107,7 +2115,7 @@ static bool should_drop_transport_block(int sf, uint16_t rnti)
float bler_val = get_bler_val(mcs, ((int)(sf_rnti_mcs[sf].sinr * 10)));
double drop_cutoff = ((double) rand() / (RAND_MAX));
assert(drop_cutoff <= 1);
LOG_I(MAC, "SINR = %f, Bler_val = %f, MCS = %"PRIu8"\n", sf_rnti_mcs[sf].sinr, bler_val, sf_rnti_mcs[sf].mcs[n]);
if (drop_cutoff <= bler_val)
{
sf_rnti_mcs[sf].drop_flag[n] = true;