MCPTT KPI 2 Mouth to Ear Modelling - shariquetelco/Mission-Critical-Communication-5G-KPI GitHub Wiki

Mouth to Ear Latency is affected by both the transmission delay and the number of relays the data has to traverse to reach all other group users.

𝑻_(𝑴𝒐𝒖𝒕𝒉𝟐𝑬𝒂𝒓 (𝑻_𝑴𝟐𝑬)=) (〖𝑯+𝟏)〗(𝑫_𝒑𝒓𝒐𝒑 )+ 𝑯(𝑫_𝑻𝒓𝒂𝒏𝒔 )

𝑯_ = number of relays in the network.

𝑫_𝑻𝒓𝒂𝒏𝒔 = delay in transmission of a single / first packet.

𝑫_𝑻𝒓𝒂𝒏𝒔=𝑳_(𝒑 )/𝑹

𝑳_(𝒑 )/𝑹 = Packet Length / Modem Data Rate

𝑫_𝒑𝒓𝒐𝒑= 1-Hop Propagation Delay