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3GPP GTP' Flow Control Disclosure Number: IPCOM000010692D
Original Publication Date: 2003-Jan-08
Included in the Prior Art Database: 2003-Jan-08

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Rob Curtis Pranavkumar Joshi


The GPRS Tunneling Protocol (GTP’) defined by 3GPP and used for signaling on the Ga interface currently does not possess a robust flow control mechanism. In the latest specification, GTP’ message buffering and/or rerouting only occurs following an error condition. In this paper we propose a sliding window to facilitate flow control in an arbitrary network configuration. Detection of a zero width window size enables source nodes to switch to an alternate destination. Detection of a non-zero width window size enables source nodes to revert back to the original destination node. Improved handshaking reduces undesirable behavior during heavy traffic periods and more efficiently utilizes network CPU, link and buffer resources.