If maximum sequence num is N ie the maximum values is given then:
In GBN : N
In SR : (N+1)/2
Ex : Given max seq num is 7, then
In GBN : MAX Window size of Sender : 7
MAX Window size of Receiver : 1
In SR : MAX Window size of Sender : (7+1)/2 = 4
MAX Window size of Receiver : (7+1)/2 = 4
(sequence number will count from 0-7 ie total 8)
If Number of sequences is N then:
In GBN : N-1
In SR : N/2
Ex: If number of sequences is 7, then
In GBN : MAX Window size of Sender : 6
MAX Window size of Receiver : 1
In SR : MAX Window size of Sender : (7)/2 = 3 (take floor)
MAX Window size of Receiver : (7)/2 = 3 (take floor)
As (Window size of Sender + Window size of Receiver) <= (Available Sequence Numbers)