How to understand the High-speed network link increase the data transmission rate only reduces the data transmission delay?

I am reading a document:

1.Transmission delay: (the time required for the host or router to send data frames, formula: transmission delay = data frame length / transmission rate).

2.Propagation delay: (The time it takes for electromagnetic waves to propagate a certain distance in the channel, formula: propagation delay: channel length / propagation rate of electromagnetic waves on the channel).

High-speed network link: The increase is the data transmission rate rather than the bit propagation rate on the link. Increasing the data transmission rate only reduces the data transmission delay.

I can not understand the High-speed network link increasing the data transmission rate only reduces the data transmission delay. in the 1 and 2 definition, the reduces should be Propagation delay.

Leave Your Comment