Transmission Delay Vs Propagation Delay

What are transmission and propagation filibuster?

Network filibuster is defined every bit how much time will take a bit of data to travel from one node to another node.

Network delay tin be divided into following means −

Transmission delay
Propagation filibuster

Permit us learn near both of them in detail.

Transmission delay

It is the time required to put a packet's bit (or data bits) on the transmission medium that can exist wired or wireless. Manual filibuster depends on the length of the packet and bandwidth of the network.

Manual delay tin be calculated every bit follows −

Manual filibuster = Bundle size / bandwidth          packet                   Destination       Data line ( 1 bit per 2nd)

Example

We accept 12,000 $.25 Ethernet packet being sent out on a 100mbps = 100 * 106 bps link. So the manual delay can be calculated as − 12000/100*106 = 0.12 milliseconds

Consider, bandwidth of data line = 1 bit per second

Length of package = 10 bit

Manual delay = x/one= ten seconds.

Propagation filibuster

It is the time required for $.25 to reach its destination from the start point. A propagation delay depends on the altitude and propagation speed.

Consider a sender S and a receiver D, it is not necessary that the receiver receives information as shortly equally the sender has finished sending, therefore when the sender sends some data it reaches the receiver only subsequently a certain amount of fourth dimension and that time is chosen propagation delay.

data    Propagation delay

Propagation delay depends on some factors which are mentioned below −

distance(d) between sender and receiver(if both of them are far apart then propagation delay is loftier)
speed of information line(v)

Propagation delay can be calculated as follows −

Propagation delay = distance / transmission speed

Instance

We have a copper wires and optical fibres media to travel, these media have a speed virtually 2/iii the speed of low-cal (i.e. speed of light = 3 * 108 m/s then speed of media = 2 * 108 m/s). We have a single wire around 5000km i.eastward. 5 * 106 meters. So the propagation filibuster can be calculated equally: 5 * 106 / ii * 108 = 0.25 milliseconds.

Consider an optical fibre network where data needs to be carried forth a distance of 2.1 km.

Hither the speed is not mentioned, but we know the speed of data transfer in an optical fibre is 70% of the speed of light hence

Speed= velocity of light * 70% Speed= ( 3*10^8 )*70%= ii.1 * 10^8 i.e. Propagation delay = distance/speed=(2.ane*10^3)/(ii.one*10^8) [Note 10^3 is used to convert km to m] Propagation filibuster= ten^-v sec

Updated on eleven-Sep-2021 07:12:45

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