Physics: Suppose there is a 3Mbps uplink and 10Mbps downlink between a geostationary satellite and the base station on earth. If the propagation speed is the speed of light (3 * 10^8 m/sec), the packet size is 20Mb, and the distance from the satellite to earth is 36,000 km, what is the uplink propagation delay of the link in milliseconds

What keeps us on the ground and doesn t let us float in the air...

Suppose there is a 3Mbps uplink and 10Mbps downlink

esmeralda1209

13.03.2021

$120\ \text{ms}$

Explanation:

Distance between the satellite and Earth = $36000\ \text{km}$

Speed of light = $3\times 10^8\ \text{m/s}$

Propagation delay is given by distance by the speed of light

$\dfrac{36000\times 10^3}{3\times 10^8}$

$=0.12\ \text{s}\times 10^3$

$=120\ \text{ms}$

The uplink propagation delay of the link is $120\ \text{ms}$ .

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