Method and apparatus for scanning signals of neighboring base station in broadband wireless communication system

• US 20080101294A1
• Filed: 10/31/2007
• Published: 05/01/2008
• Est. Priority Date: 10/31/2006
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Sung, Ki-Won
• Granted Patent: US 8,837,378 B2
• Time in Patent Office: Days
• US Class Current: 370/331
• CPC Class Codes: H04W 36/0083 Determination of parameters used for hand-off, e.g. generation or modification of neighbour cell lists
• CPC Class Codes: H04W 36/00835 Determination of neighbour cell lists
• CPC Class Codes: H04W 48/16 Discovering, processing access restriction or access information

Abstract

An apparatus and method for scanning signals of a neighboring Base Station (BS) in a broadband wireless communication system is provided. In the broadband wireless communication system, a scanning method of a serving base station includes: receiving information on a frequency use status of a neighboring base station from an upper network entity; and after determining a recommended scan frequency by using the received information, transmitting a scanning response message including the recommended scan frequency.

Claims

1. A scanning method of a serving base station in a broadband wireless communication system, the method comprising:

receiving information on a frequency use status of a neighboring base station from an upper network entity; and

after determining a recommended scan frequency by using the received information, transmitting a scanning response message including the recommended scan frequency.

2. The method of claim 1, wherein the scanning response message includes at least one piece of recommended scanning frequency information as long as the neighboring base station does not refuse a scanning request of the mobile station.

3. The method of claim 1, wherein the frequency allocation information indicates a downlink center frequency.

4. The method of claim 1, further comprising inquiring a frequency allocation use status of the neighboring base station to the upper network entity.

5. A scanning method of a mobile station in a broadband wireless communication system, the method comprising:

transmitting a scanning request message to a serving base station;

receiving a scanning response message including a recommended scanning frequency from the serving base station; and

performing scanning by referencing to the recommended scanning frequency included in the scanning response message.

6. The method of claim 5, wherein the scanning response message includes at least one piece of recommended scanning frequency information as long as a neighboring base station does not refuse a scanning request.

7. The method of claim 5, wherein the frequency allocation information indicates a downlink center frequency.

8. A base station apparatus for performing scanning in a broadband wireless communication system, the apparatus comprising:

a message processor for extracting frequency allocation information associated with a neighboring base station received from an upper network entity;

a frequency allocation determining unit in which a mobile station determines scanning frequency allocation information by using the frequency allocation information of the neighboring base station; and

a message generator for generating a scanning response message including the determined frequency allocation information.

9. The apparatus of claim 8, wherein the scanning response message includes at least one piece of recommended scanning frequency information as long as the neighboring base station does not refuse a scanning request of the mobile station.

10. The apparatus of claim 8, wherein the frequency allocation information indicates a downlink center frequency.

11. The apparatus of claim 8, further comprising a controller for transmitting to the upper network entity a message that inquires a frequency allocation use status of the neighboring base station.

12. A broadband wireless network comprising a plurality of base stations, each of the plurality of base stations operable to scan in the broadband wireless network, wherein the each base station comprises:

a message processor for extracting frequency allocation information associated with a neighboring one of the plurality of base stations received from an upper network entity;

a frequency allocation determining unit in which a mobile station determines scanning frequency allocation information by using the frequency allocation information of the neighboring base station; and

a message generator for generating a scanning response message including the determined frequency allocation information.

13. The broadband wireless network of claim 12, wherein the scanning response message includes at least one piece of recommended scanning frequency information as long as the neighboring base station does not refuse a scanning request of the mobile station.

14. The broadband wireless network of claim 12, wherein the frequency allocation information indicates a downlink center frequency.

15. The broadband wireless network of claim 12, further comprising a controller for transmitting to the upper network entity a message that inquires a frequency allocation use status of the neighboring base station.

16. A mobile station apparatus for performing scanning in a broadband wireless communication system, the apparatus comprising:

a transmitter for transmitting a scanning request message to a serving base station;

a receiver for receiving a scanning response message including a recommended scanning frequency from the serving base station; and

a controller for performing scanning by referencing to the recommended scanning frequency included in the scanning response message.

17. The apparatus of claim 16, wherein the scanning response message includes at least one piece of recommended scanning frequency information as long as a neighboring base station does not refuse a scanning request.

18. The apparatus of claim 16, wherein the frequency allocation information indicates a downlink center frequency.