Two Rival Approaches
nReservations
–Call,signal,qos
route, route pin,
admission control, call log
–Hop by hop
–Accounting
nPrincipal objective metrics:
–User:Call blocking prob.
–Net: Erlangs
nAdaption
–Congestion signal (loss, ecn, delay)
–Feedback
control loop
–TCP eqn
etc etc
nPrinciple objective metrics:
–User
throughput
–Utilisation