One or more flow control modules, implemented on various types of network topologies, provide a number of functionalities for controlling the flow of IP packets (such as TCP/IP packets) over a network connection. The flow control modules may be implemented within a sender and/or receiver or may be deployed...http://www.google.de/patents/US20050063303?utm_source=gb-gplus-sharePatent US20050063303 - TCP selective acknowledgements for communicating delivered and missed data packets
