Method of Selecting a Private Cell for Providing Communication to a Communication Device and a Communication Device

• US 20100291927A1
• Filed: 05/12/2009
• Published: 11/18/2010
• Est. Priority Date: 05/12/2009
• Status: Active Grant

• Current Assignee: Google Technology Holdings LLC (Alphabet Inc.)
• Original Assignee: Motorola, Inc. (Motorola Solutions, Inc.)
• Inventors: Benn, Howard, Wu, Jian Jun, Bi, Hao, Droste, Scott
• Granted Patent: US 8,082,000 B2
• Time in Patent Office: Days
• US Class Current: 455/435.3
• CPC Class Codes: H04W 48/16 Discovering, processing access restriction or access information
• CPC Class Codes: H04W 48/20 Selecting an access point
• CPC Class Codes: H04W 84/045 using private Base Stations, e.g. femto Base Stations, home Node B

Abstract

A method of selecting a private cell for providing communication to a communication device (222) in a communication system (200) comprising a plurality of private cells (202, 204, 206, 208) comprises identifying (400) private cells available to the communication device for establishing communication, determining (402) a priority value from a plurality of priority values for each of the identified private cells for the communication device, and selecting (404) a private cell for providing communication from the identified private cells according to the determined priority values of the identified private cells. Each private cell may be associated with a predetermined type of private cell for the communication device. The priority values for each of the identified private cells may then be determined according to the predetermined type associated with the identified private cell. A method of synchronising a priority value of a private cell determined by the communication device with a priority value of the private cell determined by a network (218) is also disclosed.

Claims

1. A method of selecting a private cell for providing communication to a communication device in a communication system comprising a plurality of private cells, the method comprising:

identifying private cells available to the communication device for establishing communication;

determining a priority value from a plurality of priority values for each of the identified private cells for the communication device; and

selecting a private cell for providing communication from the identified private cells according to the determined priority values of the identified private cells.

2. The method of claim 1, wherein each private cell of the plurality of private cells is associated with a predetermined type of private cell for the communication device, wherein determining includes determining for each of the identified private cells a priority value from a plurality of priority values according to the predetermined type associated with the identified private cell for the communication device.

3. The method of claim 2, wherein the predetermined type associated with a private cell provides information relating to the private cell for the communication device including information relating to at least one of the following:

billing rate for use of the private cell, capabilities available by the private cell, Quality of Service available by the private cell.

4. The method of claim 2, wherein each private cell of the plurality of private cells is associated with a predetermined type for the communication device of a plurality of different predetermined types, the different predetermined types including a closed private cell, an open private cell, a home private cell, a hybrid private cell, and a visitor private cell.

5. The method of claim 2, further comprising providing a list of allowed private cells with which the communication device may establish communication and wherein determining includes determining for each of the identified private cells a priority value from a plurality of priority values according to the predetermined type associated with the identified private cell for the communication device and according to whether the identified private cell is included in the list of allowed private cells.

6. The method of claim 5, further comprising providing a user defined list of the allowed private cells by selecting by a user of the communication device at least one of the allowed private cells and wherein the priority value of an identified private cell is dependent on whether the identified private cell is included in the user defined list of private cells or the list of allowed private cells or is included in both the user defined list and the list of allowed private cells.

7. The method of claim 5, further comprising storing private cell information in the communication device for the allowed private cells, the private cell information including for each allowed private cell an identity of the allowed private cell and the predetermined type of private cell associated with the allowed private cell for the communication device, and wherein determining includes determining a priority value using the stored private cell information.

8. The method of claim 7, further comprising:

storing network private cell information for the allowed private cells of the communication device in a network element of the communication system, the network private cell information including for each allowed private cell an identity of the allowed private cell and the predetermined type of private cell associated with the allowed private cell for the communication device; and

synchronising the private cell information stored in the communication device with the network private cell information.

9. The method of claim 8, wherein synchronising comprises:

in response to selecting an identified private cell, sending a signalling message by the communication device to the network, the signalling message including the identity of the identified private cell;

receiving at the communication device a response message from the network in response to the signalling message; and

updating the private cell information for the identified private cell stored in the communication device based on response information provided in the response message.

10. The method of claim 9, wherein the signalling message and response message are based on a non-access stratum (NAS) signalling protocol.

11. The method of claim 10, wherein each of the signalling message and the response message includes a priority value information element including a CSG priority information element indicator for identifying the priority value information element from other information elements and a CSG priority field for containing a priority value.

12. The method of claim 9, wherein the signalling message further includes the priority value for the identified private cell determined by the communication device, wherein the response message includes a priority value for the identified private cell for the communication device determined by the network based on the network private cell information for the identified private cell, and wherein updating includes replacing the priority value for the identified private cell determined by the communication device with the priority value in the response message when the priority value sent in the signalling message is different to the priority value determined by the network.

13. The method of claim 9, wherein the signalling message further includes the priority value for the identified private cell determined by the communication device, wherein the response message includes a priority value for the identified private cell for the communication device determined by the network based on the network private cell information for the identified private cell when the priority value sent in the signalling message is different to the priority value determined by the network, and wherein updating includes replacing the priority value for the identified private cell determined by the communication device with the priority value in the response message.

14. The method of claim 9, wherein the response message includes a priority value for the identified private cell for the communication device determined by the network based on the network private cell information for the identified private cell, and wherein updating includes replacing the priority value for the identified private cell determined in the communication device with the priority value in the response message when the priority value sent in the signalling message is different to the priority value in the response message.

15. A communication device for communicating with a private cell in a communication system comprising a plurality of private cells, the communication device comprising:

a communication section for providing wireless communication with at least one private cell;

a processing unit coupled to the communication section, the processing unit being arranged in operation to;

identify private cells available to the communication device for establishing communication;

determine a priority value from a plurality of priority values for each of the identified private cells for the communication device; and

select a private cell for providing communication from the identified private cells according to the determined priority values of the identified private cells.

16. The communication device of claim 15, wherein each private cell of the plurality of private cells is associated with a predetermined type of private cell for the communication device, wherein the processing unit is arranged in operation to determine for each of the identified private cells a priority value from a plurality of priority values according to the predetermined type associated with the identified private cell for the communication device.

17. The communication device of claim 16, wherein the predetermined type associated with a private cell provides information relating to the private cell for the communication device including information relating to at least one of the following:

billing rate for use of the private cell, capabilities available by the private cell, Quality of Service available by the private cell.

18. The communication device of claim 16, being configured to store a list of allowed private cells with which the communication device may establish communication and wherein the processing unit is arranged in operation to determine for each of the identified private cells a priority value from a plurality of priority values according to the predetermined type associated with the identified private cell for the communication device and according to whether the identified private cell is included in the list of allowed private cells.

19. The method of claim 18, being further configured to store a user defined list of the allowed private cells, the user defined list including at least one of the allowed private cells selected by a user of the communication device and wherein the processing unit is arranged in operation to determine for each of the identified private cells a priority value according to the predetermined type associated with the identified private cell for the communication device and according to whether the identified private cell is included in the user defined list of private cells or the list of allowed private cells or is included in both the user defined list and the list of allowed private cells.