$\rightarrow$ Consider a time interval of 100 seconds.and it is divided into partition of 20 seconds like
${\color{Red} 2}{\color{Red} 0}{\color{Red} s}{\color{Red} e}{\color{Red} c}$
|
${\color{Green} 2}{\color{Green} 0}{\color{Green} s}{\color{Green} e}{\color{Green} c}$ |
${\color{Cyan} 2}{\color{Cyan} 0}{\color{Cyan} s}{\color{Cyan} e}{\color{Cyan} c}$ |
${\color{DarkOrange} 2}{\color{ DarkOrange } 0}{\color{ DarkOrange } s}{\color{ DarkOrange } e}{\color{ DarkOrange } c}$ |
${\color{Orchid} 2}{\color{ Orchid } 0}{\color{ Orchid } s}{\color{ Orchid } e}{\color{ Orchid } c}$ |
20% time the user is active
$\rightarrow$ In the ${\color{Red} 1^{st}}$ ${\color{Red} s}{\color{Red} l}{\color{Red} o}{\color{Red} t}$ of ${\color{Red} 2}{\color{Red} 0}{\color{Red} s}{\color{Red} e}{\color{Red} c}$
- $User 1$ , $ User 2$ , $User 3$ , $User 4$ are active and each uses 5 Gbps
- Together they use 5 Gbps + 5 Gbps+ 5 Gbps + 5 Gbps = 20 Gbps for the ${\color{Red} 2}{\color{Red} 0}{\color{Red} s}{\color{Red} e}{\color{Red} c}$ and after this they will become inactive for the rest 4 intervals of 20 seconds each i.e. for the next 80 seconds.
$\rightarrow$ In the next ${\color{Green} 2^{nd}}$ ${\color{Green} s}{\color{Green} l}{\color{Green} o}{\color{Green} t}$ of ${\color{Green} 2}{\color{Green} 0}{\color{Green} s}{\color{Green} e}{\color{Green} c}$
- $User 5$ ,$User 6$ ,$ User 7$ ,$ User 8$ are active and each uses 5 Gbps
- Together they use 5 Gbps + 5 Gbps+ 5 Gbps + 5 Gbps = 20 Gbps for the next ${\color{Green} 2}{\color{Green} 0}{\color{Green} s}{\color{Green} e}{\color{Green} c}$ and after this they will become inactive for the next 4 intervals of 20 seconds each i.e. for the next 80 seconds.
$\rightarrow$ In the next ${\color{Cyan} 3^{rd} }$ ${\color{Cyan} s}{\color{Cyan} l}{\color{Cyan} o}{\color{Cyan} t}$ of ${\color{Cyan} 2}{\color{Cyan} 0}{\color{Cyan} s}{\color{Cyan} e}{\color{Cyan} c}$
- $User 9$ , $User 10$ , $User 11$ ,$User 12$ are active and each uses 5 Gbps
- Together they use 5 Gbps + 5 Gbps+ 5 Gbps + 5 Gbps = 20 Gbps for the next ${\color{Cyan} 2}{\color{Cyan} 0}{\color{Cyan} s}{\color{Cyan} e}{\color{Cyan} c}$ and after this they will become inactive for the next 4 intervals of 20 seconds each i.e. for the next 80 seconds.
$\rightarrow$ In the ${\color{DarkOrange} 4^{th} }$ ${\color{DarkOrange} s}{\color{ DarkOrange } l}{\color{ DarkOrange } o}{\color{ DarkOrange } t}$ of ${\color{DarkOrange} 2}{\color{ DarkOrange } 0}{\color{ DarkOrange } s}{\color{ DarkOrange } e}{\color{ DarkOrange } c}$
- $User 13$ ,$ User 14$,$ User 15$ , $User 16$ are active and each uses 5 Gbps
- Together they use 5 Gbps + 5 Gbps+ 5 Gbps + 5 Gbps = 20 Gbps for the next ${\color{DarkOrange} 2}{\color{ DarkOrange } 0}{\color{ DarkOrange } s}{\color{ DarkOrange } e}{\color{ DarkOrange } c}$ and after this they will become inactive for the next 4 intervals of 20 seconds each i.e. for the next 80 seconds.
$\rightarrow$ In the ${\color{Orchid} 5^{th} }$ ${\color{Orchid} s}{\color{ Orchid } l}{\color{ Orchid } o}{\color{ Orchid } t}$ of ${\color{Orchid} 2}{\color{ Orchid } 0}{\color{ Orchid } s}{\color{ Orchid } e}{\color{ Orchid } c}$
- $User 17$ ,$ User 18$ ,$ User 19$ , $User 20$ are active and each uses 5 Gbps
- Together they use 5 Gbps + 5 Gbps+ 5 Gbps + 5 Gbps = 20 Gbps for the next ${\color{Orchid} 2}{\color{ Orchid } 0}{\color{ Orchid } s}{\color{ Orchid } e}{\color{ Orchid } c}$ and after this they will become inactive for the next 4 intervals of 20 seconds each i.e. for the next 80 seconds.
$\rightarrow$ After this again $User 1$ , $ User 2$ , $User 3$ , $User 4$ are active and each uses 5 Gbps and the loop repeats.
$\therefore$ Max. users that the network can be used by is 20.