METHOD OF CONTROLLING HOME CELL SELECTION FOR A WIRELESS COMMUNICATION SYSTEM AND RELATED DEVICE

• US 20100130197A1
• Filed: 11/27/2008
• Published: 05/27/2010
• Est. Priority Date: 11/27/2008
• Status: Active Grant

• Current Assignee: HTC Corporation
• Original Assignee: HTC Corporation
• Inventors: Wu, Chih-Hsiang
• Granted Patent: US 8,433,317 B2
• Time in Patent Office: Days
• US Class Current: 455/433
• CPC Class Codes: H04W 8/18 Processing of user or subscriber data, e.g. subscribed services, user preferences or user profiles; Transfer of user or subscriber data
• CPC Class Codes: Y02D 30/70 in wireless communication networks

Abstract

A method for saving power of a user equipment corresponding to home cell selection for a wireless communication system is disclosed. The user equipment includes a whitelist capable of providing a list of accessible home cells. The method includes clearing the whitelist of the user equipment when the user equipment roams to a visited network.

Claims

1. A method for saving power corresponding to home cell selection for a user equipment of a wireless communication system, the method comprising:

stopping home cell selection when the user equipment roams to a visited network.

2. The method of claim 1, wherein the user equipment comprises a whitelist comprising a list of accessible home cells.

3. The method of claim 2, wherein stopping home cell selection comprises clearing the whitelist of the user equipment.

4. The method of claim 3, wherein clearing the whitelist comprises, through a whitelist updating procedure, clearing the whitelist when the user equipment roams to the visited network.

5. The method of claim 4, wherein the whitelist updating procedure comprises at least one of an attach procedure, a tracking area updating procedure, a location area updating procedure, and a routing area updating procedure.

6. The method of claim 2, wherein the whitelist further provides at least one corresponding network of the accessible home cells.

7. The method of claim 6, wherein stopping home cell selection comprises:

detecting presence of the visited network; and

stopping searching the home cells when the visited network is presented.

8. The method of claim 6, wherein stopping home cell selection comprises:

detecting presence of the visited network in the whitelist when camping on a macro cell of the visited network; and

stopping searching the home cells in the whitelist when the visited network is not found in the whitelist.

9. A communication device of a wireless communication system for saving power corresponding to home cell selection, the communication device comprising:

a processor for processing storage data;

a communication interfacing unit for exchanging signals with a peer communication device of the wireless communication system; and

a computer readable recording medium coupled to the processor, for storing the storage data;

wherein the storage data comprises;

a whitelist comprising a list of accessible home cells and at least one corresponding network;

program code for detecting presence of a visited network; and

program code for stopping searching the home cells when the visited network is presented.

10. The communication device of claim 9, wherein stopping searching the home cells comprises clearing the whitelist.

11. The communication device of claim 10, wherein clearing the whitelist is performed through a whitelist updating procedure.

12. The communication device of claim 11, wherein the whitelist updating procedure comprises at least one of an attach procedure, a tracking area updating procedure, a location area updating procedure, and a routing area updating procedure.

13. A communication device of a wireless communication system for saving power corresponding to home cell selection, the communication device comprising:

a processor for processing storage data;

a communication interfacing unit for exchanging signals with a peer communication device of the wireless communication system; and

a computer readable recording medium coupled to the processor, for storing the storage data;

wherein the storage data comprises;

a whitelist comprising a list of accessible home cells and at least one corresponding network;

program code for detecting presence of the visited network in the whitelist when camping on a macro cell of the visited network; and

program code for stopping searching the home cells in the whitelist when the visited network is not found in the whitelist.