MULTIHOMED COMMUNICATION DEVICE

• US 20140161026A1
• Filed: 12/27/2010
• Published: 06/12/2014
• Est. Priority Date: 01/17/2010
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Stojanovski, Saso, Vedrine, Arnaud
• Granted Patent: US 9,392,522 B2
• Time in Patent Office: Days
• US Class Current: 370/328
• CPC Class Codes: H04L 45/22 Alternate routing
• CPC Class Codes: H04W 36/22 for handling the traffic
• CPC Class Codes: H04W 40/02 Communication route or path selection, e.g. power-based or shortest path routing
• CPC Class Codes: H04W 40/246 Connectivity information discovery
• CPC Class Codes: H04W 48/16 Discovering, processing access restriction or access information
• CPC Class Codes: H04W 48/17 Selecting a data network PoA [Point of Attachment]
• CPC Class Codes: H04W 48/20 Selecting an access point
• CPC Class Codes: H04W 76/15 Setup of multiple wireless link connections
• CPC Class Codes: H04W 84/045 using private Base Stations, e.g. femto Base Stations, home Node B
• CPC Class Codes: H04W 88/06 adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals

Abstract

The invention relates to a method for routing an uplink IP packet of a cellular device. The method comprises obtaining, by a routing client of the cellular device, a routing rule from a routing server, routing the uplink IP packet, according to the routing rule, through a first PDN connection or through a second PDN connection, both PDN connections being established over the same cellular radio interface of the cellular device. The invention also relates to a corresponding cellular device.

Claims

1. A method for routing an uplink IP packet of a cellular device, comprising:

(a) obtaining, by a routing client of the cellular device, a routing rule from a routing server,

(b) according to the routing rule, routing the uplink IP packet through a first PDN connection or through a second PDN connection, both PDN connections being established over the same cellular radio interface of the cellular device.

2. The method according to claim 1, wherein the routing client is an ANDSF client and wherein the routing server is an ANDSF server.

3. The method according to claim 1, wherein both PDN connections are established through a common femto cell.

4. The method according to claim 1, wherein the first PDN connection is established with a gateway providing access to a local IP network, and the second PDN connection is established with a mobile operator'"'"'s packet core network.

5. The method according to claim 1, wherein the routing rule comprises identification information in the form of an IP 5-tuple allowing the cellular device to identify the candidate traffic class of the uplink IP packet.

6. The method according to claim 1, wherein the routing rule comprises a list of APNs sorted by priority order, each APN identifying a PDN connection.

7. The method according to claim 1, wherein the step (a) comprises submitting, by the cellular device, a list of APNs to the routing server, and receiving, from the routing server, a routing rule comprising only a subset of APNs corresponding to the list of APNs submitted.

8. A cellular device set to establish two PDN connections over the same cellular radio interface of the cellular device, the cellular device comprising a routing client set to obtain a routing rule from a routing server, wherein the cellular device is set to route an uplink IP packet through the first or through the second PDN connection depending on the routing rule.

9. The cellular device according to claim 8, wherein the routing client is an ANDSF client and wherein the routing server is an ANDSF server.

10. The cellular device according to claim 8, wherein the cellular device is set to establish the two PDN connections through a common femto cell.

11. The cellular device according to claim 8, wherein the cellular device is set to establish the first PDN connection with a gateway providing access to a local IP network, and to establish the second PDN connection with a mobile operator'"'"'s packet core network.

12. The cellular device according to claim 8, wherein the routing rule comprises identification information in the form of an IP 5-tuple allowing the cellular device to identify the candidate traffic class of the uplink IP packet.

13. The cellular device according to claims 8, wherein the routing rule comprises a list of APNs sorted by priority order, each APN identifying a PDN connection.

14. The cellular device according to claim 13, wherein the cellular device is set to submit a list of APNs to the routing server, and to receive, from the routing server, a routing rule comprising only a subset of APNs corresponding to the list of APNs submitted.