Transmission Delay

networking

Definition

Transmission Delay

Let a packet of length $L$ bits be sent over a link with transmission rate $R$ bits per second.

The transmission delay $d_{\text{trans}}$ is the time required to push all $L$ bits of the packet onto the link:

$$d_{\text{trans}}=\frac{L}{R}$$

This is the first-hop delay component of the total packet delay at a node. It depends only on packet size and link rate, not on distance.