Patent ID: 8416694

Claim:
A network feedback method in a data unit transport network that comprises a controlling node connected to receive data units from a proxy node and to forward said received data units over a link to a data unit receiver, said method comprising the following steps performed at the controlling node: performing a link characteristic monitoring procedure for detecting whether a change has occurred in said link, triggered by said link characteristic monitoring procedure having detected a change in a characteristic of said link, performing a remote flow control adjustment procedure for adjusting the flow control of said data units from said proxy node, wherein the remote flow control adjustment procedure includes the steps of: comparing a first link capacity value indicative of the capacity of said link prior to said change in link capacity and a second link capacity value indicative of the capacity of said link after said change in link capacity, depending on the outcome of the comparing step, sending a flow control adjustment command to said proxy node; and wherein said controlling node is arranged to queue said received data units before forwarding them over said link, and said comparing step adds a length of said queue to the first link capacity value, where said link capacity is based on a transmission rate, and where the length of the queue is a number of received data units queued in a buffer at the time of said change in link capacity.