Patent ID: 7630314
Filing Date: 2009-12-08
Classification: H04L,H04W

Abstract:
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:  with U denoting a backhaul link utilization of the congestion-affecting access controller and  with ΣCIR denoting the total sum of subscriber CIR associated with the congestion-affecting access controller, A denoting a predetermined allowance value, and MAX[MIR] denoting the highest subscriber MIR associated with the congestion-affecting access controller, where the subscriber CIR and MIR values are obtained from an access controller manager; b. providing a quality-of-service manager which will: c. maintaining a plurality of subscriber service level agreements during a dynamic bandwidth adjustment of said top-ranking congestion-affecting access controllers by:  whereby said dynamic management of said bandwidth settings of said plurality of congestion-affecting access controllers in said packet-based network will maintain a condition of non-congestion in said core transport network and thus provide quality of service in said packet-based network.