Method and arrangement for reserving resources to obtain a predetermined quality of service in an IP network
AssigneeNetsocket, Inc.
InventorsOlov Schelèn, Joakim Norrgård, Jim Sundqvist
Life of this patent
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Abstract
A method and an arrangement in an IP network provides a scalable solution for reserving resources to obtain a predictable QoS end-to-end in a heterogeneous IP network. The object is achieved by categorizing the destination domain with a domain property label that for example informs about the availability of resources in the destination domain and about how to obtain QoS to the endpoint in this particular domain category.
Claims42
An IP network, including a plurality of domains, comprising:
- a source domain and a destination domain, the source domain comprising a source terminal and a first Network Resource Manager (NRM), the destination domain comprising a destination terminal and a second NRM, the source domain and the destination domain having one or more intermediate domains communicatively coupled between the source domain and the destination domain;
- the source terminal in the source domain comprising means for sending IP packets requiring a predetermined QoS to the destination terminal;
- the first NRM in the source domain comprising means for requesting from the second NRM a resource sufficient for the transmission of the IP packets to be able to fulfill said QoS;
- the second NRM comprising means for announcing a domain property label of the destination domain to the first NRM, said domain property label characterizing said destination domain, the first NRM and the second NRM further comprising means for performing an appropriate action and for transmitting the IP packets with said QoS between the source terminal and the destination terminal according to the announced domain property label, said domain property label indicating to the first NRM when additional action is required to reserve resources in the destination domain;
- and
- means for using an NRM path vector to identify said second NRM.
A Network Resource Manager (NRM) unit within a first domain within an IP network, the NRM unit comprising:
- means for receiving a resource request from a second NRM, located within a second domain, the first domain being separated from the second domain by one or more intermediate domains;
- said NRM unit comprising means for announcing a domain property label of the first domain to the second NRM, said domain property label characterizing a destination domain and indicating to the second NRM when additional action is required to reserve resources in the first domain;
- means for performing an appropriate action, to provide a QoS end-to-end, between a first endpoint and a second endpoint, according to the announced domain property label;
- and
- means for using an NRM path vector to identify a third NRM within a third domain.
A method for reserving resources within an IP network to obtain a predetermined QoS between a source terminal within a source domain and a destination terminal within a destination domain, the method comprising the steps of:
- a first Network Resource Manager (NRM), located within said source domain, requesting from a second NRM, located within said destination domain, a resource required for fulfilling said QoS, said resource being intended for transmission of IP packets, one or more intermediate domains being interposed between the source domain and the destination domain;
- the second NRM announcing a domain property label of the destination domain to the first NRM, said domain property label characterizing said destination domain;
- the first NRM and the second NRM performing one of several actions for transmitting said IP packets with said QoS between the source terminal and the destination terminal according to the announced domain property label, at least one of the several actions causing the first NRM to perform additional communications with the second NRM to reserve resources in said destination domain;
- and
- using an NRM path vector to identify NRMs along a path from the source terminal to an end-terminal.
Dependencies are inferred from the claim text.