Split transport control protocol (TCP) flow control management in a cellular broadband network

Patent metadata

Field	Value
Publication number	US-9264365-B2
Application number	US-201213563104-A
Country	US
Kind code	B2
Filing date	Jul 31, 2012
Priority date	Jul 31, 2012
Publication date	Feb 16, 2016
Grant date	Feb 16, 2016

Abstract

Embodiments of the present invention provide a method, system and computer program product for split transport control protocol (TCP) flow control management in a cellular broadband network. In an embodiment of the invention, a method for split TCP flow control management in a cellular broadband network is provided. The method includes first determining a context for a packet received as part of a data flow in a base station of a cellular broadband network and then selecting either an end-to-end TCP connection or a split TCP connection to support the data flow. Thereafter, the data flow is routed using the selected connection.

First claim

We claim:

1. A method for split transport control protocol (TCP) flow control management in a cellular broadband network, the method comprising:
determining both a context for a packet received as part of a data flow in a base station of a cellular broadband network and also whether or not based upon the context the packet is part of a data flow able to be optimally communicated using a split TCP connection, or whether the data flow is optimally communicated using an end-to-end TCP connection;
selecting a connection selected from the group consisting of an end-to-end TCP connection and a split TCP connection to support the data flow in accordance with the determined ability for optimal communications of the data flow utilizing either the split TCP connection or the end-to-end TCP connection; and,
routing the data flow using the selected connection.

2. The method of claim 1 , wherein the context is determined using deep packet inspection.

3. The method of claim 2 , further comprising:
using shallow packet inspection to determine the context prior to deep packet inspection; and,
foregoing deep packet inspection if the context is determined using shallow packet inspection, but otherwise using deep packet inspection to determined the context for the packet.

4. The method of claim 1 , wherein the data flow is routed to a split TCP proxy when the split TCP connection is selected to support the data flow, and the data flow is routed to a target content server directly using an end-to-end TCP connection with the end-to-end TCP connection is selected.

5. The method of claim 1 , wherein the data flow is first routed using an end-to-end TCP connection and a hand-off to a TCP split connection is made when a new context is determined.

6. A cellular broadband data processing system configured for split transport control protocol (TCP) flow control management, the system comprising:
a plurality of base stations, each in a correspondingly different cell site of a cellular broadband network;
a plurality of host computing systems each disposed in correspondingly different ones of the base stations, each of the host computing systems comprising at least one computer with at least one processor and memory;
a plurality of edge routing modules each executing in correspondingly different ones of the host computing systems and routing data flows over different TCP connections to different specified content servers; and,
a plurality of split TCP selection modules each coupled to a different one of the edge routing modules, each of the split TCP selection modules comprising program code enabled to determine both a context for a packet received as part of a data flow and also whether or not based upon the context the packet is part of a data flow able to be optimally communicated using a split TCP connection, or whether the data flow is optimally communicated using an end-to-end TCP connection, to select a connection selected from the group consisting of an end-to-end TCP connection and a split TCP connection to support the data flow in accordance with the determined ability for optimal communications of the data flow utilizing either the split TCP connection or the end-to-end TCP connection, and to direct a coupled one of the edge routing modules to route the data flow using the selected connection.

7. The system of claim 6 , wherein the context is determined using deep packet inspection.

8. The system of claim 7 , wherein each of the split TCP selection modules uses shallow packet inspection to determine the context prior to deep packet inspection, and foregoes deep packet inspection if the context is determined using shallow packet inspection, but otherwise uses deep packet inspection to determined the context for the packet.

9. The system of claim 6 , wherein each of the edge routing modules routes the data flow to a split TCP proxy when the split TCP connection is selected to support the data flow, and each of the edge routing modules routes the data flow to a target content server directly using an end-to-end TCP connection with the end-to-end TCP connection is selected.

10. The system of claim 6 , wherein the data flow is first routed using an end-to-end TCP connection and a hand-off to a TCP split connection is made when a new context is determined.

11. A computer program product for split transport control protocol (TCP) flow control management in a cellular broadband network, the computer program product comprising:
a non-transitory computer readable storage medium having computer readable program code embodied therewith, the computer readable program code comprising:
computer readable program code for execution by a processor for determining both a context for a packet received as part of a data flow in a base station of a cellular broadband network and also whether or not based upon the context the packet is part of a data flow able to be optimally communicated using a split TCP connection, or whether the data flow is optimally communicated using an end-to-end TCP connection;
computer readable program code for execution by the processor for selecting a connection selected from the group consisting of an end-to-end TCP connection and a split TCP connection to support the data flow in accordance with the determined ability for optimal communications of the data flow utilizing either the split TCP connection or the end-to-end TCP connection; and,
computer readable program code for execution by the processor for routing the data flow using the selected connection.

12. The computer program product of claim 11 , wherein the context is determined using deep packet inspection.

13. The computer program product of claim 11 , further comprising:
computer readable program code for using shallow packet inspection to determine the context prior to deep packet inspection; and,
computer readable program code for foregoing deep packet inspection if the context is determined using shallow packet inspection, but otherwise using deep packet inspection to determined the context for the packet.

14. The computer program product of claim 11 , wherein the data flow is routed to a split TCP proxy when the split TCP connection is selected to support the data flow, and the data flow is routed to a target content server directly using an end-to-end TCP connection with the end-to-end TCP connection is selected.

15. The computer program product of claim 11 , wherein the data flow is first routed using an end-to-end TCP connection and a hand-off to a TCP split connection is made when a new context is determined.

Assignees

• Agrawal Dakshi
• Anthony Jr Bruce O
• Le Thai V Franck
• Nicholson Robert B
• Pappas Vasileios
• Touma Maroun
• Verma Dinesh
• IBM

Inventors

• Agrawal Dakshi
• Anthony Jr Bruce O
• Le Thai V Franck
• Nicholson Robert B
• Pappas Vasileios
• Touma Maroun
• Verma Dinesh

Classifications

• H04L47/193 Primary

  at the transport layer, e.g. TCP related · CPC title

• H04L69/163

  In-band adaptation of TCP data exchange; In-band control procedures · CPC title

• H04W80/06

  Transport layer protocols, e.g. TCP [Transport Control Protocol] over wireless {(transmission control protocol/Internet protocol [TCP/IP] or user datagram protocol [UDP] H04L69/16)} · CPC title

• H04W28/0273

  adapting protocols for flow control or congestion control to wireless environment, e.g. adapting transmission control protocol [TCP] (wireless network protocols or protocol adaptations to wireless operation, e.g. wireless application protocol H04W80/00) · CPC title