Inter-unit transfer support using mobile internet protocol

• US 8,873,564 B2
• Filed: 04/15/2011
• Issued: 10/28/2014
• Est. Priority Date: 04/16/2010
• Status: Active Grant

• Current Assignee: InterDigital Patent Holdings, Inc. (InterDigital, Inc.)
• Original Assignee: InterDigital Patent Holdings, Inc. (InterDigital, Inc.)
• Inventors: De Foy, Xavier, Shaheen, Kamel M., Perras, Michelle
• Primary Examiner(s): MEW, KEVIN D
• Application Number:
  US13/087,531
• Publication Number:
  US 20120093062A1
• Time in Patent Office: 1,292 Days
• Field of Search: 370/315, 370/326, 370335-336, 370342-343, 370/345, 370/389, 370/392, 370/437, 370/465, 370479-480, 370/498, 370/230, 370/230.1, 370/231, 370/235, 370352-356, 370/397, 370/399, 370/395.2, 370/395.3, 370/395.31
• US Class Current: 370/395.31
• CPC Class Codes: H04L 65/1083 In-session procedures
• CPC Class Codes: H04L 65/1089 by adding media; by removing media
• CPC Class Codes: H04L 65/1094 Inter-user-equipment sessions transfer or sharing
• CPC Class Codes: H04L 65/1096 Supplementary features, e.g. call forwarding or call holding systems providing special services or facilities to telephony subscribers H04M3/42
• CPC Class Codes: H04W 40/30 for proactive routing
• CPC Class Codes: H04W 40/34 Modification of an existing route
• CPC Class Codes: H04W 8/08 Mobility data transfer
• CPC Class Codes: H04W 80/04 Network layer protocols, e.g. mobile IP [Internet Protocol]

Abstract

A WTRU may receive a first data flow from a source device such as a correspondence node and perform a seamless IUT such that the correspondent node is unaware that the flow has been transferred to a different WTRU. The WTRU may register with a first home agent, wherein the first home agent receives a plurality of messages addressed for a home address. The home agent may forward the messages to the WTRU at a first care-of-address. The WTRU may send a binding update to the first home agent. The binding update may comprise a second traffic selector and a second action. The second action may specify that a second message of the plurality of messages is to be forwarded to a different WTRU when the second message matches the second traffic selector.

Claims

1. A method comprising:

registering a first device with a home agent, wherein registering the first device associates a care of address (CoA) for the first device with a home address (HoA), and a first binding identification (BID) in a binding table of the home agent;

the first device sending a first binding update to the home agent to establish a flow, the first binding update comprising a first traffic selector and a first action, wherein the first action indicates that messages matching the first traffic selector is to be forwarded to an address that is identified by the first HoA and the first BID in the binding table of the home agent; and

the first device sending a second binding update to the home agent to transfer the flow to a second device, the second binding update comprising a second traffic selector and a second action, wherein the second action indicates that a second message of a plurality of messages is to be forwarded to an address that is identified by a second HoA and a second BID in the binding table at the home agent.

2. The method of claim 1, wherein the second HoA and the second BID are associated with a care-of-address (CoA) for the second device.

3. The method of claim 1, wherein a source of the flow is unaware that the flow has been transferred to the second device.

4. The method of claim 1, further comprising sending a request for authorization to transfer the flow prior to sending the second binding update, and receiving authorization to transfer the flow.

5. The method of claim 1, further comprising discovering the second device and determining if an application being executed on the second device is capable of supporting data included in the flow.

6. The method of claim 5, further comprising sending application information to the second device, the application information facilitating use of data included in the flow.

7. The method of claim 1, wherein addresses included in the binding table of the home agent are further identified based on a user equipment identification (UEID).

8. The method of claim 7, wherein at least two devices associated with a single subscriber share a common HoA.

9. A method comprising:

a home agent (HA) receiving registration information for a first device from the first device;

associating a first care of address (CoA) for the first device with a first home address, HoA, and a first a binding identification (BID) in a binding table of the HA, wherein the first CoA is uniquely identifiable in the binding table based on the first HoA and the first BID;

the home agent receiving a first binding update from the first device, the first binding establishing a flow, the first binding update comprising a first traffic selector and a first action, wherein the first action indicates that messages matching the first traffic selector to be forwarded to an address that is identified by the first HoA and the first BID in the binding table of the HA;

the home agent routing the messages matching the first traffic selector to the first device at the first CoA;

the home agent receiving a second binding update from the first device to transfer the flow to a second device, the second binding update comprising a second traffic selector and a second action, wherein the second action indicates that messages matching the second traffic selector and a second BID in the binding table at the home agent be forwarded to an address that is identified by a second HoA; and

the home agent routing the messages matching the second traffic selector to the second device at a second CoA.

10. The method of claim 9, wherein the second CoA is identified in the binding table by the second HoA and the second BID.

11. The method of claim 9, further comprising receiving a third binding update, wherein the third binding update indicates transferring a first portion of the flow to a third device and a second portion of the flow to a fourth device.

12. The method of claim 9, further comprising determining whether the second binding update is authorized.

13. The method of claim 11, wherein the third binding update comprises a third traffic selector associated with the first portion of the flow and a fourth traffic selector associated with the second portion of the flow.

14. The method of claim 9, further comprising receiving registration information for the second device from the first device.

15. A Wireless Transmit/Receive Unit (WTRU) comprising:

a processor configured to;

register the WTRU with a home agent (HA), wherein registering the WTRU associates a care of address, CoA, for the WTRU with a first home address, HoA, and a first a binding identification, BID, in a binding table of the HA;

send a first binding update to the home agent to establish a flow, the first binding update comprising a first traffic selector and a first action, wherein the first action indicating that a packet is to be forwarded from the home agent to an address that is identified by the first HoA and the first BID in the binding table of the home agent; and

send a second binding update to the home agent to transfer the flow to a second WTRU, the second binding update comprising a second traffic selector and a second action, wherein the second action indicates that the packet is to be forwarded to an address that is identified by a second HoA and a second BID in the binding table at the home agent.

16. The WTRU of claim 15, wherein addresses included in the binding table of the HA are further identified based on a user equipment identification, UEID.

17. The WTRU of claim 15, wherein the processor is further configured to send a request for authorization to transfer the flow prior to sending the second binding update, and receive authorization to transfer the flow.

18. The WTRU of claim 15, wherein at least two devices associated with a single subscriber share a common HoA.

19. The WTRU of claim 15, wherein the processor is further configured to send a request for authorization to transfer the flow prior to sending the second binding update, and receiving authorization to transfer the flow to the second WTRU.