Hi All,
Does anyone has some figure level throughput over Physical layer, MAC and RLC layer comparison?
Theoretical or real?
In theory you can take physical throughput (75/150/300 Mbps) and reduce it by ~12-20% overhead to calculate each layers throughput.
Real Throughput.
Physical Throughput can be estimated by modulation, RB.
MAC throughput is based on TBS, highest MCS is 28 with code rate about 0.95 so MAC throughput ~ 95% physical throughput.
RLC throughput is less than MAC throughput mainly depend on IBLER. if ibler = 10%, RLC throughput is about 90% of MAC throughput.
RLC, PDCP, App throughput is almost the same because header is small, for e.g.: PDCP throughput ~ 99.5% RLC throughput.
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If TCP packet loss is high, pdcp throughput is much lower than rlc throughput.
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Hi Can any one please elaborate more. that which layer has highest thput and why… (PDCP-RLC-MAC-Phy).
This thread already elaborates sufficiently.
Physical link has highest throughput - this is the top level constraint.
Packets arrive at the receiving device, where they go through demodulation and decoding- due to redundancy in the data to enable error detection and error correction, the throughput at the MAC level is lower. Further, RLC throughput drops because not every transport block arrives error free, and not all errors can be corrected, requiring block retransmission (or incremental retransmission).
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