Admissions control in a connectionless communications network
DC
First Claim
1. An admission control server for use in a packet-switched communications network, the network comprising a plurality of nodes and a plurality of links interconnecting the nodes, said server comprising:
- (i) an input configured to receive a call admission request in respect of a potential call traversing the network between two or more packet media endpoints;
(ii) an input configured to access predetermined information about one or more of the plurality of links to be used for carrying packets comprising the potential call, the predetermined information comprising an amount of available bandwidth on said one or more of the plurality of links;
(iii) a processor configured to determine whether to accept the potential call on the basis of the accessed predetermined information;
(iv) an output configured to output the result of the determination of whether to accept the potential call on the basis of the accessed predetermined information.
9 Assignments
Litigations
1 Petition
Accused Products
Abstract
A method of providing call admission control which does not require using MIDCOM protocol methods, Packetcable protocols or COPS-RSVP s approaches is described which is simple to implement, cost-effective and which is able to deal with particular situations such as conference calls. Each link in a communications network over which it is required to perform call admissions control is provided with a middlebox connected at each end of that link such that admissions control can be carried out at one end of the link. Call services are provided by Call Servers, each of which has access to a database containing pre-specified information about all middleboxes in that call server'"'"'s realm. The database also has information about maximum bandwidths for the link associated with each middlebox. The call servers are used to keep a running tally of the amount of VoIP call bandwidth associated with each middlebox on the edge of a low-bandwidth link, and to accept or refuse calls on the basis of the bandwidth information on a per-call basis.
13 Citations
25 Claims
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1. An admission control server for use in a packet-switched communications network, the network comprising a plurality of nodes and a plurality of links interconnecting the nodes, said server comprising:
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(i) an input configured to receive a call admission request in respect of a potential call traversing the network between two or more packet media endpoints; (ii) an input configured to access predetermined information about one or more of the plurality of links to be used for carrying packets comprising the potential call, the predetermined information comprising an amount of available bandwidth on said one or more of the plurality of links; (iii) a processor configured to determine whether to accept the potential call on the basis of the accessed predetermined information; (iv) an output configured to output the result of the determination of whether to accept the potential call on the basis of the accessed predetermined information. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method of performing admissions control in a packet-switched communications network, the network comprising a plurality of nodes and a plurality of links interconnecting the nodes, the method comprising the steps of:
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(a) receiving at a call server a call admission request in respect of a potential call traversing the network between two or more packet media endpoints; (b) accessing predetermined information about one or more of the plurality of links to be used for carrying packets comprising the potential call, the predetermined information comprising an amount of available bandwidth on said one or more of the plurality of links; (c) determining whether to accept the potential call on the basis of the accessed predetermined information; and (d) outputting the results of the determination of whether to accept the potential call on the basis of the accessed predetermined information. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
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Specification
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- Resources
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Current AssigneeInternational License Exchange of America, LLC (Equitable IP Corporation)
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Original AssigneeNortel Networks Corporation
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InventorsBradd, Patrick
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Primary Examiner(s)Pham, Chi
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Assistant Examiner(s)Boakye, Alexander O.
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Application NumberUS11/355,640Publication NumberTime in Patent Office873 DaysField of Search370/230, 370/338, 370/229, 370/232, 370/235, 370/908, 370/389, 370/395.2, 370/395.21, 370/395.41, 370/395.53US Class Current370/230CPC Class CodesH04L 47/70 Admission control; Resource...H04L 47/724 at intermediate nodes, e.g....H04L 47/801 Real time trafficH04L 47/806 Broadcast or multicast trafficH04L 47/822 Collecting or measuring res...H04L 65/1043 Gateway controllers, e.g. m...H04L 65/1073 Registration or de-registra...H04L 65/1083 In-session proceduresH04L 65/1101 Session protocolsH04L 65/1104 Session initiation protocol...H04L 65/4038 with floor controlH04L 65/80 Responding to QoSH04M 3/56 Arrangements for connecting...H04W 28/10 Flow control between commun...H04W 72/00 Local resource managementH04W 88/14 Backbone network devices
