Scheduling vs Random Access - 9 DCR 08/21/2013 Random Access System with FH (Illustrative Example) 1234567 Time Slots User 1: REDUser 2: GREEN User 3: BLUE User 4: ORANGE 3221222 # Contending users 6664248 Observations: Random access controls the average number of users in a slot But sometimes too many or too few users contend Total Successful Hops: 36 # Successful hops p = 1/2 p = probability of transmission 1 2 3 4 5 Frequencies
{}