Patent ID: 7876679

Claim:
A first communication entity comprising: a processing unit, and a memory including computer program code, where the memory and the computer program code are configured, with the processing unit, to cause the first communication entity to at least: use at least two alternative wireless transmission paths for a data transfer connection with a second communication entity, where the at least two alternative wireless transmission paths each use different link level transmission paths; pass, from a link level protocol layer to a transport level protocol layer of the data transfer connection, information identifying a wireless transmission path of the at least two alternative wireless transmission paths used for said data transfer connection with the second communication entity, where a particular wireless transmission path of the at least two alternative wireless transmission paths used for the data transfer connection was changed, during the data transfer connection, to the wireless transmission path that uses a different link level transmission path, and where the information is passed in response to the change; and in response to the information from the link level protocol layer identifying the wireless transmission path using the different link level transmission path, adjust a size of at least one window of one or more windows that control a data transfer flow on said transport level protocol layer of the data transfer connection, wherein said adjustment is based at least on results of preliminary testing previously stored for said wireless transmission path using the different link level transmission path.