Methods and systems for providing quality of service in packet-based core transport networks

A method for avoiding congestion in a core transport network of a packet-based network, said packet-based network comprising:

• said core transport network comprising a plurality of backbone links connected to a plurality of backhaul links through a plurality of edge nodes,
• an access network comprising a plurality of subscriber terminals connected to said core transport network through a plurality of access controllers, wherein
• said access controllers perform resource and admission control functions, said method comprising:
• a. identifying access controllers that are a source or destination of packets traversing each said backbone and backhaul links,
• b. utilizing a plurality of monitoring probes in said core transport network to identify at least one of said backbone or backhaul links that is nearing congestion and to trigger a dynamic bandwidth adjustment,
• c. determining bandwidth settings for affected access controllers that are the source or destination of packets traversing each of the backbone or backhaul links nearing congestion,
• d. checking if subscribers' service level agreements in the backbone or backhaul links nearing congestion are violated,
• e. enforcing said bandwidth settings to said affected access controllers if said subscribers' service level agreements in the backbone or backhaul links nearing congestion are not violated,
• f. notifying a network operator to implement a capacity upgrade if said subscribers' service level agreements in the backbone or backhaul links nearing congestion are violated,
• whereby said avoiding congestion in said core transport network will provide necessary and sufficient quality-of-service in said core transport network of said packet-based network.