Ciphering configuration procedure in an unlicensed wireless communication system

• US 7,200,399 B2
• Filed: 09/14/2005
• Issued: 04/03/2007
• Est. Priority Date: 10/18/2002
• Status: Expired due to Term

• Current Assignee: Ribbon Communications Operating Company, Inc. (Ribbon Communications, Inc.)
• Original Assignee: Kineto Wireless Incorporated (Ribbon Communications, Inc.)
• Inventors: Baranowski, Joseph G., Mohammed, Jahangir, Shi, Jianxiong, Shekhar, Madhu C., Elam, Thomas G., Powell, Mark, Kolderup, Kenneth M., Gallagher, Michael D., Markovic, Milan
• Primary Examiner(s): Eng; George
• Assistant Examiner(s): Miller; Brandon J.
• Application Number:
  US11/227,840
• Publication Number:
  US 20060025144A1
• Time in Patent Office: 566 Days
• Field of Search: 455/448, 455/446, 455/432.2, 455/422.1, 455/426.1, 455/435.1, 455/552.1, 455/445, 455/421, 455/462, 455/465, 455/432.1, 455/436, 370/331
• US Class Current: 455/436
• CPC Class Codes: H04L 63/0272 Virtual private networks
• CPC Class Codes: H04L 63/0428 wherein the data content is protected, e.g. by encrypting or encapsulating the payload
• CPC Class Codes: H04W 60/04 using triggered events
• CPC Class Codes: H04W 76/30 Connection release
• CPC Class Codes: H04W 84/045 using private Base Stations, e.g. femto Base Stations, home Node B
• CPC Class Codes: H04W 84/12 WLAN [Wireless Local Area Networks]
• CPC Class Codes: H04W 84/16 WPBX [Wireless Private Branch Exchange]
• CPC Class Codes: H04W 88/06 adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals
• CPC Class Codes: H04W 88/12 Access point controller devices
• CPC Class Codes: H04W 88/16 Gateway arrangements
• CPC Class Codes: H04W 92/02 Inter-networking arrangements
• CPC Class Codes: H04W 92/06 between gateways and public network devices

Abstract

An unlicensed wireless service is adapted to generate the interface protocols of a licensed wireless service to provide transparent transition of communication sessions between a licensed wireless service and an unlicensed wireless service. In one embodiment, a mobile station includes level 1, level 2, and level 3 protocols for licensed wireless service and an unlicensed wireless service. An indoor base station and indoor network controller provide protocol conversion for the unlicensed wireless service into a standard base station controller interface of the licensed wireless service.

Claims

1. A method for ciphering configuration in a communication system comprising a licensed wireless communication system and an unlicensed wireless communication system, wherein the unlicensed wireless communication system comprises an unlicensed network controller serving an unlicensed region, the method comprising:

a) at the unlicensed network controller, receiving a base station system management application part (BSSMAP) cipher mode command from the licensed wireless communication system, said BSSMAP cipher mode command indicating that ciphering is required for a mobile station in said unlicensed region; and

b) sending an unlicensed radio resource (RR) cipher mode command message containing cipher mode setting information from the unlicensed network controller to the mobile station, said cipher mode setting information for allowing the mobile station to enable ciphering when a call carried by the mobile station in said unlicensed region is subsequently handed over from the unlicensed wireless communication system to the licensed wireless communication system.

2. The method of claim 1 wherein the BSSMAP cipher mode command includes an encryption information parameter.

3. The method of claim 1 further comprising:

a) storing the cipher mode setting information by the mobile station; and

b) receiving a cipher mode complete message at the unlicensed network controller from the mobile station.

4. The method of claim 1 wherein the BSSMAP cipher mode command sent from the licensed wireless communication system includes an identity request, wherein said identity request for directing the mobile station to identify itself.

5. The method of claim 4 wherein the cipher mode command message sent from the unlicensed network controller to the mobile station includes the identity request.

6. The method of claim 3 wherein the cipher mode complete message includes the mobile station international mobile equpment identity software version (IMEISV) information.

7. The method of claim 4 further comprising:

sending a BSSMAP cipher mode complete message from the unlicensed network controller to the licensed wireless communication system.

8. An unlicensed wireless network controller to operate in an unlicensed wireless communication system comprising a first radio access network, the unlicensed network controller comprising:

a) a first network interface comprising a broadband access network;

b) a second network interface through which messages are sent to and received from a mobile station via an access point communicatively coupled between the mobile station and the unlicensed network controller, the interface including a plurality of layers implemented over the broadband network interface;

c) a third network interface, for connecting the unlicensed network controller to a telecommunications network employed by a licensed wireless communication system; and

d) circuits for handling a set of licensed messages exchanged with the licensed wireless communication network and a set of unlicensed radio resource (RR) messages transmitted over the second interface to support ciphering configuration of the mobile station;

wherein the set of licensed messages exchanged with the licensed wireless communication network includes a base station system management application part (BSSMAP) cipher mode command sent from the licensed wireless communication system to the unlicensed network controller to indicate that ciphering is required;

wherein the set of unlicensed RR messages includes a cipher mode command message containing cipher mode setting information, said cipher mode setting information for allowing the mobile station to enable ciphering when a call carried by the mobile station in said unlicensed wireless communication system is subsequently handed over from the unlicensed wireless communication system to the licensed wireless communication system, said cipher mode command message sent from the unlicensed network controller to the mobile station.

9. The unlicensed network controller of claim 8 wherein the BSSMAP cipher mode command includes an encryption information parameter.

10. The unlicensed network controller of claim 8 wherein the set of unlicensed RR messages includes:

a cipher mode complete message received at the unlicensed network controller from the mobile station.

11. The unlicensed network controller of claim 10 wherein the cipher mode command message includes an identity request and the cipher mode complete message includes the mobile station international mobile equipment identity software version (IMEISV) information, said identity request for directing the mobile station to send the mobile station IMEISV.

12. The unlicensed network controller of claim 10 wherein the set of messages exchanged with the licensed wireless communication network includes a BSSMAP cipher mode complete message sent from the unlicensed network controller to the licensed wireless communication system.

13. In a communication system that includes a licensed wireless communication system for communicatively connecting to a mobile station using a licensed wireless frequency and an unlicensed wireless communication system for communicatively connecting to the mobile station using an unlicensed wireless frequency, a computer readable medium of an unlicensed wireless network controller, said computer readable medium storing a set of instructions, which when executed by the unlicensed network controller, causes the unlicensed network controller to:

a) connect to an unlicensed wireless base station, said base station communicatively coupled to the mobile station using the licensed wireless frequency;

b) exchange a set of licensed messages with a licensed wireless communication system and exchange a set of unlicensed radio resource (RR) messages with the mobile station to support ciphering configuration of the mobile station;

wherein the set of licensed messages exchanged with the licensed wireless communication network includes a base station system management application part (BSSMAP) cipher mode command received from the licensed wireless communication system to the unlicensed network controller to indicate that ciphering is required;

wherein the set of unlicensed RR messages includes a cipher mode command message sent from the unlicensed network controller to the mobile station, said cipher mode command message containing cipher mode setting information, said cipher mode setting information for allowing the mobile station to enable ciphering when a call carried by the mobile station in said unlicensed wireless communication system is subsequently handed over from the unlicensed wireless communication system to the licensed wireless communication system.

14. The computer readable medium of claim 13 wherein the BSSMAP cipher mode command includes an encryption information parameter.

15. The computer readable medium of claim 13 further storing a set of instructions, which when executed by the unlicensed network controller, causes the unlicensed network controller to:

receive a cipher mode complete message sent from the mobile station.

16. The computer readable medium of claim 15 wherein the cipher mode command message includes an identity request and the cipher mode complete message includes the mobile station international mobile equipment identity software version (IMEISV) information, said identity request for directing the mobile station to send the mobile station IMEISV.

17. The computer readable medium of claim 15 further storing a set of instructions, which when executed by the unlicensed network controller, causes the unlicensed network controller to send a BSSMAP cipher mode complete message to the licensed wireless communication system.