CONGESTION CONTROL BASED INTER-GNB CARRIER AGGREGATION

A method, network node, computer program, and computer program product are provided. A number of media access control, MAC, flows from the first network node that each forms a source end-point to a destination end-point is defined, wherein the first network node includes the source end-point and each destination end point node includes a second network node having one or more destination carriers. A MAC flow packet size is defined that is scaled based on carrier bandwidth where each MAC flow packet has an approximately equivalent spectrum usage and an equivalent quality of service, QoS, on a destination carrier on the second network node. A MAC flow packet is transmitted to the second network node, wherein the MAC flow packet node includes a bundle of one or more MAC sub-protocol data units, sub-PDUs.