METHOD AND SYSTEM FOR EFFICIENT ENRICHMENT OF UPPER LAYER PROTOCOL CONTENT IN TRANSMISSION CONTROL PROGRAM (TCP) BASED SESSIONS

• US 20160065644A1
• Filed: 08/26/2014
• Published: 03/03/2016
• Est. Priority Date: 08/26/2014
• Status: Active Grant

• Current Assignee: Mavenir Systems Incorporated (Mavenir Group Holdings Ltd.)
• Original Assignee: Connectem, Inc. (Broadcom, Inc.)
• Inventors: Kant, Nishi
• Granted Patent: US 10,171,548 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: H04L 67/02 based on web technology, e.g. hypertext transfer protocol [HTTP]
• CPC Class Codes: H04L 67/142 Managing session states for stateless protocols; Signalling session states; State transitions; Keeping-state mechanisms
• CPC Class Codes: H04L 67/564 Enhancement of application control based on intercepted application data
• CPC Class Codes: H04L 69/163 In-band adaptation of TCP data exchange; In-band control procedures
• CPC Class Codes: H04W 80/06 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 Class Codes: H04W 80/08 Upper layer protocols network arrangements or communication protocols for networked applications H04L67/00

Abstract

A gateway system employing a redirect mechanism at upper layer protocols over Transmission Control Protocol (TCP) in a packet network to circumvent problems related to alteration of TCP sequence number due to header enrichment. The gateway system increases the size of a redirect message by the size of the header enrichment and thereby brings TCP sequence number on both ends in sync despite adding the header enrichment information.

Claims

1. A network element for processing message flow of a network comprising:

an access network interface unit configured to send and receive communications from a mobile device; and

a processor with a memory associated with the network interface unit and adapted to;

receive an HTTP Request from a mobile device and identify if the HTTP Request needs to be enriched;

if so, create a Redirect URL including;

i) an original requested URL; and

ii) a Substitution String; and

send the Redirect URL back to the mobile device.

2. The network element of claim 1, wherein the size of the Substitution String equals a predicted size of an Enriched Header if the network element were to enrich the HTTP Request.

3. The network element of claim 1, wherein the Substitution String includes a Marker.

4. The network element of claim 3, wherein the Substitution String further includes a header enrichment (HE) placeholder.

5. The network element of claim 3, wherein the processor is further adapted to:

identify an HTTP Request having the Substitution String;

replace the Substitution String in the HTTP Request with the Enriched Header; and

transmit the modified HTTP Request to a server.

6. The network element of claim 1, wherein the network element is a GGSN.

7. The network element of claim 1, wherein the network element is a P-GW.

8. A method performed within a network element having an access network interface unit, a processor and memory, said network element configured to process network signaling of a packet core network, the method comprising:

receiving an HTTP Request from a mobile device and identifying if the HTTP Request needs to be enriched;

if so, creating a Redirect URL including;

i) an original requested URL; and

ii) a Substitution String; and

sending the Redirect URL back to the mobile device.

9. The method of claim 8, wherein the size of the Substitution String equals a predicted size of an Enriched Header if the network element were to enrich the HTTP Request.

10. The method of claim 8, wherein the Substitution String includes a Marker.

11. The method of claim 10, wherein the Substitution String further includes a header enrichment (HE) placeholder.

12. The method of claim 10, further comprising:

identifying an HTTP Request having the Substitution String;

replacing the Substitution String in the HTTP Request with the Enriched Header; and

transmitting the modified HTTP Request to a server.

13. The method of claim 8, wherein the network element is a GGSN.

14. The method of claim 8, wherein the network element is a P-GW.

15. A network element for processing message flow of a network comprising:

an access network interface unit configured to send and receive communications from a mobile device; and

a processor with a memory associated with the network interface unit and adapted to;

receive an HTTP Request from a mobile device and identify if the HTTP Request needs to be enriched;

if so, create a Redirect URL including;

i) an original requested URL; and

ii) a Substitution String, wherein the size of the Substitution String equals a predicted size of an Enriched Header if the network element were to enrich the HTTP Request;

send the Redirect URL back to the mobile device;

identify an HTTP Request having the Substitution String;

replace the Substitution String in the HTTP Request with the Enriched Header; and

transmit the modified HTTP Request to a server.

16. The network element of claim 15, wherein the network element is a GGSN.

17. The network element of claim 15, wherein the network element is a P-GW.

18. The network element of claim 15, wherein the Substitution String includes a Marker.

19. The network element of claim 18, wherein the Substitution String further includes a header enrichment (HE) placeholder.