System and method for updating neighbor base station information in a communication system

• US 20090092098A1
• Filed: 10/06/2008
• Published: 04/09/2009
• Est. Priority Date: 10/05/2007
• Status: Abandoned Application

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Kim, Chang-Yeon
• Application Number:
  US12/287,111
• Publication Number:
  US 20090092098A1
• Time in Patent Office: Days
• US Class Current: 370/331
• CPC Class Codes: H04W 24/00 Supervisory, monitoring or testing arrangements
• CPC Class Codes: H04W 48/08 Access restriction or access information delivery, e.g. discovery data delivery signalling during connection H04W76/00
• CPC Class Codes: H04W 48/16 Discovering, processing access restriction or access information
• CPC Class Codes: H04W 88/08 Access point devices
• CPC Class Codes: H04W 88/12 Access point controller devices

Abstract

A method is provided for updating neighbor base station (BS) information by a serving BS in a communication system. The method includes acquiring a neighbor BS list from a base station controller (BSC); sending a request message for requesting an update of information on a neighbor BS to the at least one neighbor BS included in the neighbor BS list; checking if a report message including the neighbor BS'"'"'s information is received from the neighbor BS; when the report message is received, sending to the neighbor BS a confirm message indicating the normal receipt of the report message; and updating the neighbor BS'"'"'s information according to the received neighbor BS'"'"'s information. The neighbor BS list is a list of BSs with which a mobile station (MS) located in a cell of the serving BS can perform a handover.

Claims

1. A method for updating neighbor base station (BS) information by a serving base station in a communication system, the method comprising:

acquiring a neighbor BS list from a base station controller (BSC);

sending a request message to the at least one neighbor base station included in the neighbor BS list;

determining if a report message is received from the neighbor base station corresponding to the request message;

when the report message is received, sending to the neighbor base station a confirm message indicating a normal receipt of the report message; and

updating the at least one neighbor base station included in the neighbor BS list corresponding to a neighbor base station'"'"'s information included in the request message;

wherein the neighbor BS list is a list of base stations with which a mobile station (MS) located in a cell of the serving base station can perform a handover.

2. The method of claim 1, further comprising:

generating a neighbor BS advertisement message before sending the request message;

wherein the neighbor BS advertisement message includes a neighbor BS list obtained by excluding the at least one neighbor base station'"'"'s information from the neighbor BS list.

3. The method of claim 2, further comprising:

sending to the mobile station a neighbor BS advertisement message including the neighbor BS list in which the at least one neighbor base station'"'"'s information is updated.

4. The method of claim 1, further comprising:

when the report message is not received, resending the request message to the at least one neighbor base station a predetermined number of times.

5. The method of claim 4, further comprising:

stopping the resending of the request message when the report message is not received after resending the request message the predetermined number of times; and

deleting the at least one neighbor base station'"'"'s information from the neighbor BS list.

6. The method of claim 1, further comprising:

after sending the request message, starting a timer; and

releasing the timer after the report message is received.

7. A method for updating neighbor base station (BS) information by a neighbor base station in a communication system, the method comprising:

acquiring a neighbor BS list from a base station controller (BSC);

upon perceiving a change in a neighbor BS information of the neighbor base station itself, sending a report message including the changed neighbor BS information to at least one serving base station included in the neighbor BS list; and

determining if a confirm message indicating a normal receipt of the report message is received from the at least one serving base station;

wherein the neighbor BS list is a list of base stations of cells where mobile stations (MSs) are located, which intend to perform a handover to a cell of the neighbor base station.

8. The method of claim 7, further comprising:

upon receiving a request message from an arbitrary serving base station, sending a report message including the neighbor base station'"'"'s information corresponding to the request message to the arbitrary serving base station.

9. The method of claim 7, further comprising:

after sending the report message, starting a timer; and

releasing the timer when the confirm message is received.

10. The method of claim 9, further comprising:

when the confirm message is not received, determining if the timer has expired;

if the timer has expired, resending the report message to the serving base station; and

if the timer has not expired, waiting for a reception of the confirm message.

11. A system for updating neighbor base station (BS) information in a communication system, the system comprising:

a serving base station for;

sending a request message to the at least one neighbor base station included in a neighbor BS list acquired from a base station controller (BSC);

checking if a report message corresponding the request message is received from the at least one neighbor base station;

when the report message is received, sending to the neighbor base station a confirm message indicating the normal receipt of the report message; and

updating the at least one neighbor base station'"'"'s information including in the neighbor list according to the at least one neighbor base station'"'"'s information including in the report message;

wherein the neighbor BS list is a list of base stations with which a mobile station (MS) located in a cell of the serving base station can perform a handover.

12. The system of claim 11, wherein the serving base station generates a neighbor BS advertisement message before sending the request message;

wherein the neighbor BS advertisement message includes a neighbor BS list obtained by excluding the at least one neighbor BS information from the neighbor BS list.

13. The system of claim 12, wherein the serving base station sends to the mobile station a neighbor BS advertisement message including the neighbor BS list in which the at least one neighbor base station'"'"'s information is updated.

14. The system of claim 11, wherein when the report message is not received, the serving base station resends the request message to the at least one neighbor base station a predetermined number of times.

15. The system of claim 14, wherein the serving base station stops the resending of the request message when the report message is not received after resending the request message the predetermined number of times;

and deletes the at least one neighbor base station'"'"'s information from the neighbor BS list.

16. The system of claim 11, wherein after sending the request message, the serving base station starts a timer, and releases the timer after the report message is received.

17. A system for updating neighbor base station (BS) information in a communication system, the system comprising:

a neighbor base station for;

acquiring a neighbor BS list from a base station controller (BSC);

upon perceiving a change in a neighbor BS information of the neighbor base station itself, sending a report message including the changed neighbor BS information to at least one serving base station included in the neighbor BS list; and

determining if a confirm message indicating a normal receipt of the report message is received from the at least serving base station;

wherein the neighbor BS list is a list of base stations of cells where mobile stations (MSs) are located, which intend to perform a handover to a cell of the neighbor base station.

18. The method of claim 17, wherein upon receiving a request message from an arbitrary serving base station, the neighbor base station sends a report message including the neighbor base station'"'"'s information corresponding to the request message to the arbitrary serving base station.

19. The method of claim 17, wherein after sending the report message, the neighbor base station starts a timer;

and releases the timer when the confirm message is received.

20. The method of claim 19, wherein if the neighbor base station determines that the timer has expired before the confirm message is received, the neighbor base station resends the report message to the serving base station when the timer has expired, and if the neighbor base station determines that the timer has not expired, the neighbor base station waits for a reception of the confirm message.