Method and apparatus for activating transport channels in a packet switched communication system

• US 8,005,076 B2
• Filed: 10/29/2007
• Issued: 08/23/2011
• Est. Priority Date: 07/14/2006
• Status: Active Grant

• Current Assignee: Ribbon Communications Operating Company, Inc. (Ribbon Communications, Inc.)
• Original Assignee: Kineto Wireless Incorporated (Ribbon Communications, Inc.)
• Inventors: Tao, Patrick, Gallagher, Michael D., Markovic, Milan, Khetawat, Amit
• Primary Examiner(s): Kincaid; Lester
• Assistant Examiner(s): Khan; Mehmood B
• Application Number:
  US11/927,665
• Publication Number:
  US 20080181204A1
• Time in Patent Office: 1,394 Days
• Field of Search: 370/328, 370/329, 370/353, 455/445, 455/450
• US Class Current: 370/353
• CPC Class Codes: H04W 12/06 Authentication
• CPC Class Codes: H04W 12/08 Access security
• CPC Class Codes: H04W 8/04 Registration at HLR or HSS [Home Subscriber Server]
• CPC Class Codes: H04W 80/04 Network layer protocols, e.g. mobile IP [Internet Protocol]
• 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

Some embodiments provide a method of registering a user equipment (UE) in a communication system that includes a licensed wireless communication system and a generic access network (GAN) that has a generic access network controller (GANC). The method sends a register request message from the UE to the GANC that indicates a GAN mode capability of A/Gb only for the UE. When the GANC has a GAN mode capability of A/Gb, the GANC registers the UE with the GAN. When the GANC has a GAN mode capability of Iu only, the GANC rejects the register request message. When the GANC has a GAN mode capability of both A/Gb and Iu, the GANC registers the UE based on a set of GANC mode selection rules that the GANC applies for registering UEs with the GAN.

Claims

1. A method of managing a plurality of packet transport channels (PTCs) in a communication system comprising a first communication system and a second wireless generic access communication system, the method comprising:

establishing a secure tunnel between a user equipment (UE) and a network controller of the second wireless generic access communication system to securely exchange a plurality of signaling messages between the UE and the network controller, wherein the first communication system comprises a core network and a licensed radio access network, wherein the network controller communicatively couples the second wireless generic access communication system to the core network;

activating, at the UE, a separate PTC between the UE and the network controller for each of a plurality of active packet data protocol (PDP) contexts, wherein a separate PTC is activated for a particular PDP context when the UE initiates a data transfer to the network controller and no active PTC exists for the particular PDP context, each separate PTC activated through a set of signaling messages exchanged between the UE and the network controller, wherein the UE and the network controller use a generic access packet switched resources protocol for exchanging the set of signaling messages for packet switched services and a generic access circuit switched resources protocol for exchanging the set of signaling messages for circuit switched services; and

starting a PTC timer dedicated to a particular PTC for a particular PDP context whenever a data packet related to the particular PDP context is sent from the UE or received at the UE, expiration of said PTC timer indicating the particular PTC needs to be deactivated.

2. The method of claim 1 further comprising:

using a same UE endpoint identification for each PTC; and

using a same network controller endpoint identification for each PTC.

3. The method of claim 1 further comprising deactivating the particular PTC when the PTC timer dedicated to the particular PTC expires.

4. The method of claim 3 further comprising sending a request to initiate PTC deactivation from the UE to the network controller when the PTC timer dedicated to the particular PTC expires.

5. The method of claim 3 further comprising initiating PTC reactivation of the particular PTC at the UE when the UE has a data packet to send to the first communication system.

6. The method of claim 3 further comprising initiating PTC reactivation of the particular PTC by the network controller when the first communication system has a data packet to send to the UE.

7. The method of claim 1 further comprising receiving a release message at the UE from the network controller requesting the UE to deactivate the particular PTC.

8. The method of claim 1, wherein the separate PTC is activated when the network controller initiates a PTC activation procedure.

9. The method of claim 1, wherein the separate PTC is activated when the UE receives an activate PTC request message from the network controller.

10. The method of claim 1, wherein the generic access packet switched resources protocol is GA-PSR protocol, and the generic access circuit switched resources protocol is GA-CSR protocol.

11. The method of claim 1, wherein the UE and the network controller use a single generic access radio resource control (GA-RRC) protocol for exchanging signaling messages for both packet switched and circuit switched services.

12. The method of claim 1, wherein the set of signaling messages comprises an activate request message received at the UE from the network controller to request activation of a particular PTC.

13. The method of claim 12, wherein the set of signaling messages further comprises an activate acknowledgement message sent from the UE to the network controller to acknowledge the activation of the particular PTC.

14. A non-transitory computer readable medium of a user equipment (UE), the computer readable medium storing a computer program for managing a plurality of packet transport channels (PTCs) in a communication system comprising a first communication system and a second wireless generic access communication system, the computer program comprising sets of instructions for:

establishing a secure tunnel between the UE and a network controller of the second wireless generic access communication system to securely exchange a plurality of signaling messages between the UE and the network controller, wherein the first communication system comprises a core network and a licensed radio access network, wherein the network controller communicatively couples the second wireless generic access communication system to the core network;

activating, at the UE, a separate PTC between the UE and the network controller for each of a plurality of active packet data protocol (PDP) contexts, wherein the set of instructions for activating a separate PTC comprises a set of instructions for activating the PTC for a particular PDP context when the UE initiates a data transfer to the network controller and no active PTC exists for the particular PDP context, each separate PTC activated through a set of signaling messages exchanged between the UE and the network controller,

using a generic access packet switched resources protocol for exchanging the set of signaling messages for packet switched services with the network controller;

using a generic access circuit switched resources protocol for exchanging the set of signaling messages for circuit switched services with the network controller; and

starting a PTC timer dedicated to a particular PTC for a particular PDP context whenever a data packet related to the particular PDP context is sent from the UE or received at the UE, expiration of said PTC timer indicating the particular PTC needs to be deactivated.

15. The non-transitory computer readable medium of claim 14, wherein the computer program further comprises a set of instructions for:

using a same UE endpoint identification for each PTC; and

using a same network controller endpoint identification for each PTC.

16. The non-transitory computer readable medium of claim 14, wherein the computer program further comprises a set of instructions for deactivating the particular PTC when the PTC timer dedicated to the particular PTC expires.

17. The non-transitory computer readable medium of claim 16, wherein the computer program further comprises a set of instructions for sending a request to initiate PTC deactivation from the UE to the network controller when the PTC timer dedicated to the particular PTC expires.

18. The non-transitory computer readable medium of claim 16, wherein the computer program further comprises a set of instructions for initiating PTC reactivation of the particular PTC at the UE when the UE has a data packet to send to the first communication system.

19. The non-transitory computer readable medium of claim 16, wherein the computer program further comprises a set of instructions for initiating PTC reactivation of the particular PTC by the network controller when the first communication system has a data packet to send to the UE.

20. The non-transitory computer readable medium of claim 14, wherein the computer program further comprises a set of instructions for receiving a release message at the UE from the network controller requesting the UE to deactivate the particular PTC.

21. The non-transitory computer readable medium of claim 14, wherein the separate PTC is activated when the network controller initiates a PTC activation procedure.

22. The non-transitory computer readable medium of claim 14, wherein the separate PTC is activated when the UE receives an activate PTC request message from the network controller.

23. The non-transitory computer readable medium of claim 14, wherein the generic access packet switched resources protocol is GA-PSR protocol, and the generic access circuit switched resources protocol is GA-CSR protocol.

24. The non-transitory computer readable medium of claim 14, wherein the UE and the network controller use a single generic access radio resource control (GA-RRC) protocol for exchanging signaling messages for both packet switched and circuit switched services.

25. The non-transitory computer readable medium of claim 14, wherein the set of signaling messages comprises an activate request message received at the UE from the network controller to request activation of a particular PTC.

26. The non-transitory computer readable medium of claim 25, wherein the set of signaling messages further comprises an activate acknowledgement message sent from the UE to the network controller to acknowledge the activation of the particular PTC.