André Ferreira, Paulo Carvalho*, Solange Rito Lima*
PT INovação, S.A.
Portugal Telecom Group
P-3810-106 Aveiro, Portugal
Universidade do Minho*
Departamento de Informática
P-4710-057 Braga, Portugal
Tel.: +351 253 604436
Fax.: +351 253 604471
E-mail: solange at di.uminho.pt
In NGN service-provisioning platforms the existence of an efficient
and flexible admission control mechanism is essential for providing
quality of service in a reliable and stable way, avoiding congestion
scenarios caused by indiscriminate and uncontrolled service requests.
The capability of modulating and regulating the rate of call
acceptance, and provide service differentiation allow indirect control
of the load submitted to the platform. This paper presents a service
admission control solution that enables to differentiate, limit and
modulate the rate by which service requests are submitted into a NGN
service-provisioning platform. The solution is focused on providing a
fair level of bandwidth sharing among service classes, in a
configurable and dynamic way so that it can adapt the distribution by
which service requests are served. To sustain the design goals of our
solution, major scheduling disciplines and rate control mechanisms are
here studied and compared in order to elect the more adequate
components. The implemented solution was submitted to unit and charge
tests; the results show its effectiveness and robustness in controlling
and differentiating incoming service calls.
Wireless Telecommunications Symposium 2010, (WTS 2010), Tampa, Florida, April 2010.