Bearer-level Modeling for Volume Metrics
§ Throughput
§ Key metric users really care about
diversity, a 29% overhead for each PRB exists on average because of
resources allocated to physical downlink control channel, physical
broadcast channel and reference signals. The physical layer has a
BLER target of 10%.
Account for MAC Sub-layer Retransmissions The MAC sub-
layer performs retransmissions. We denote the MAC eciency
as MAC . It is computed as the ratio of total rst transmissions
over total transmissions. We compute MAC using our traces. The
predicted throughput due to transmit diversity is calculated as:
tputRLCdi = (1.0 MAC ) ⇥ 0.9 ⇥ (1 0.29) ⇥ 180 ⇥
PRBdi ⇥
lo
2(1 +
SINRdi )/
TxTimedi
PRBdi denotes the total PRBs allocated for transmit diversity.
TxTimedi is the total transmission time for transmit diversity.