Bandwidth brokers of instantaneous and book-ahead requests for differentiated services networks

摘要

The Quality of Service(QoS)reservations in Differentiated Service(DiffServ)networks can be classified into Two sets: Book-ahead(BA)requests and Instantaneous Requests (IRs). When an admitted BA request becomes active, some on- going IRs is dropped when the bandwidth is insufficient for sup- porting both IRs and BA requests. The admission control should predict the lifetime, i.e. look-ahead time, of the IRs to prevent the admitted IRs from being dropped. The control should then check whether the available bandwidth during the look-ahead time is sufficient for the incoming IRs.