Method and system for reserving resources within an ip-network
The present invention relates to a method an arrangement for reserving resources in an IP network. By mixing open-ended reservations with in-advance reservations, by utilising a common pool of resources, the resource utilisation will be high. Despite the support for open-ended reservations, the present invention allows immediate and in-advance time-limited reservations wherein the resources are guaranteed. It also allows modification of active and “soon to be active” reservations, which in turn permit soft-state reservations. The invention supports different types of applications with varying time-distributions and varying risk of pre-emption. A new concept of open-ended in-advance reservations is also introduced in the present invention.
1 - 22 . (canceled)
23 . A method for reserving network resources within an IP network, wherein the resources are reserved by a resource manager for an application or a group of applications within a time interval defined by a start-time and a stop-time, characterised in that the method comprises the step of:
guaranteeing said resources between said start-time and said stop-time, and
keeping said resources for the application after said stop-time has expired if said application still needs resources, wherein the resource manager is keeping a list of active reservations that have expired after said stop-time.
24 . Method according to claim 23 , characterised in that all resource reservations are utilising a common pool of resources.
25 . Method according to claim 23 , characterised in that individual start- and stop-time are set for each application by an application client.
26 . Method according to claim 23 , characterised in that individual start- and stop-time are set for each application by the resource manager.
27 . Method according to claim 23 , characterised in that said start-time is set to the current time.
28 . Method according to claim 27 , characterised in that said stop-time is set to the current time.
29 . Method according t claim 23 , characterised in that said stop-time is set to infinity.
30 . Method according to claim 23 , characterised in that charging of said resources is based on the amount of guaranteed resources.
31 . Method according to claim 23 , characterised in that said resources are related to the bandwidth.
32 . A computer program product directly loadable into an internal memory of a router or a server within an IP network comprising the software code portions for performing the steps of claim 23 .
33 . A computer program product stored on a computer usable medium, comprising readable program for causing a resource manager in a server or a router within an IP network to control the execution of the steps of claim 23 .
34 . A resource manager for reserving network resources within an IP network, wherein said resource manager comprises means for reserving resources for an application or a group of applications within a time interval defined by a start-time and a stop-time, characterised in that said resource manager comprises means for guaranteeing said resources between said start-time and said stop-time, and means for keeping said resources for the application after said stop-time has expired if said application still needs the resources wherein said resource manager comprises means for keeping a list of active reservations that have expired after said stop-time.
35 . Resource manager according to claim 34 , characterised in that all resource reservations are utilising a common pool of resources.
36 . Resource manager according to claim 34 , characterised in that said resource manager comprises means for allowing the each application client to set individual start- and stop-time for said application.
37 . Resource manager according to claim 34 , characterised in that said resource manager comprises means for setting individual start- and stop-time for each application.
38 . Resource manager according to claim 34 , characterised in that said resource manager comprises means for setting said start-time to the current time.
39 . Resource manager according to claim 38 , characterised in that said resource manager comprises means for setting said stop-time to the current time.
40 . Resource manager according to claim 34 , characterised in that said resource manager comprises means for setting said stop-time to infinity.
41 . Resource manager according to claim 34 , characterised in that said resource manager comprising means for basing the charging of said resources on the amount of guaranteed resources.
42 . Resource manager according to claim 34 , characterised in that said resources are related to the bandwidth.