Methods and systems for dynamic bandwidth management for quality of service in IP Core and access networks
First Claim
1. A method for dynamic management of bandwidth settings of a plurality of congestion-affecting access controllers in a packet-based network, said packet-based network comprising:
- a core transport network having a plurality of backbone links, each of the backbone links being connected to a core node, the core nodes being connected to a plurality of access controllers via backhaul links,an access network having said plurality of access controllers, each of the access controllers in a base station being connected to a plurality of subscriber terminals via sectors of said base station and performing resource and admission control functions, each of the subscriber terminals being assigned a committed information rate CIR and a maximum information rate MIR which are managed by said access controllers,said method comprising;
a. providing a network management system which computes a link utilization gain G of each said congestion-affecting access controllers with respect to a total sum of subscriber CIR or a highest subscriber MIR associated with the congestion-affecting access controller, according to a following formula;
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Abstract
Proper allocation of network bandwidth is a crucial issue in rendering certain performance guarantees to meet the growing customer demands. Hence, allocation methodologies must explicitly be carried out for these guarantees to be given as efficiently as possible since the shared resources are limited. This invention presents methods and systems for Dynamic Bandwidth Management (DBM) and Quality of Service (QoS) in packet-based networks. DBM is an algorithm that dynamically adjusts the resource allocation in the IP Access Networks based upon measured QoS at the IP Core Network through an implementation of a Feedback Control Mechanism to manage available core transport bandwidth. Such a Feedback Control Mechanism is capable of maintaining a condition of non-congestion, a sufficient and necessary condition to meet end-to-end QoS requirements in a Next Generation Network (NGN). The emphasis is given on the system implementation of QoS policies for the fair distribution of network resources through a scalable architecture comprising key Resource and Admission Control Functional (RACF) entities, namely: a Network Management System (NMS), a QoS Manager, an Access Controller Manager (ACM), the Access Controllers, and the active probes.
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Citations
20 Claims
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1. A method for dynamic management of bandwidth settings of a plurality of congestion-affecting access controllers in a packet-based network, said packet-based network comprising:
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a core transport network having a plurality of backbone links, each of the backbone links being connected to a core node, the core nodes being connected to a plurality of access controllers via backhaul links, an access network having said plurality of access controllers, each of the access controllers in a base station being connected to a plurality of subscriber terminals via sectors of said base station and performing resource and admission control functions, each of the subscriber terminals being assigned a committed information rate CIR and a maximum information rate MIR which are managed by said access controllers, said method comprising; a. providing a network management system which computes a link utilization gain G of each said congestion-affecting access controllers with respect to a total sum of subscriber CIR or a highest subscriber MIR associated with the congestion-affecting access controller, according to a following formula; - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A dynamic bandwidth management system for use on a plurality of congestion-affecting access controllers in a packet-based network, said packet-based network comprising:
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a core transport network having a plurality of backbone links, each of the backbone links being connected to a core node, the core nodes being connected to a plurality of access controllers via backhaul links, an access network having said plurality of access controllers, each of the access controllers in a base station being connected to a plurality of subscriber terminals via sectors of said base station and performing resource and admission control functions, each of the subscriber terminals being assigned a committed information rate CIR and a maximum information rate MIR which are managed by said access controllers, said dynamic bandwidth management system comprising; a. a network management system which computes a link utilization gain G of each said congestion-affecting access controllers with respect to a total sum of subscriber CIR or a highest subscriber MIR associated with the congestion-affecting access controller, according to a following formula; - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification