Method of performing actions related to handover by a mobile station that is in power saving mode in a wireless mobile communication system

• US 20060281436A1
• Filed: 03/30/2006
• Published: 12/14/2006
• Est. Priority Date: 06/09/2005
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Ryu, Ki Seon, Kim, Beom Joon
• Granted Patent: US 7,672,660 B2
• Time in Patent Office: Days
• US Class Current: 455/343.200
• CPC Class Codes: H04W 36/24 Reselection being triggered by specific parameters
• CPC Class Codes: Y02D 30/70 in wireless communication networks

Abstract

A method of performing actions related to handover by a mobile station (MS) in a wireless mobile communication system is disclosed. More specifically, the MS receives information from a base station (BS), wherein the information includes at least one action for performing handover and at least one condition corresponding to the at least one action. Furthermore, the MS transmits a request message to perform the at least one action based on the received information from the BS and receives a response message in response to the request message. Lastly, the MS performs the at least one action according to the received response message.

Claims

1. A method of performing an action related to handover by a mobile station (MS) that is in power saving mode in a wireless mobile communication system, the method comprising:

receiving information from a base station (BS), wherein the information includes at least one action for performing handover and at least one condition corresponding to the at least one action;

transmitting a request message to perform the at least one action based on the received information from the BS;

receiving a response message in response to the request message; and

performing the at least one action according to the received response message.

2. The method of claim 1, wherein the information defines a trigger type which includes at least one of Carrier-to-Interference and Noise Ratio (CINR), a Received Signal Strength Indicator (RSSI), and a Round Trip Delay.

3. The method of claim 1, wherein the information defines a trigger function which is a computation method for triggering action.

4. The method of claim 1, wherein the at least one action includes a scanning request, a scanning report, and a handover request.

5. The method of claim 1, wherein the information defines a trigger value which represents a value used for comparing to a measured value of at least one trigger type.

6. The method of claim 1, wherein the information defines a trigger average duration which represents a time duration in which at least one trigger type is measured and averaged for determining a condition for triggering at least one action.

7. The method of claim 6, wherein the trigger type which includes at least one of Carrier-to-Interference and Noise Ratio (CINR), a Received Signal Strength Indicator (RSSI), and a Round Trip Delay.

8. The method of claim 1, wherein the request message is used for entering the power saving mode.

9. The method of claim 8, wherein the request message includes a bitmap for indicating the at least one action to be performed during the power saving mode.

10. The method of claim 9, wherein the bitmap represented by a plurality of bits, the bit having a value of ‘

0’

represents the action that is disabled.

11. The method of claim 10, wherein if each bit of the bitmap has a value of ‘

0,’

which indicates that all the actions are disabled.

12. The method of claim 9, wherein the bitmap represented by a plurality of bits, the bit having a value of ‘

1’

represents the action that is enabled.

13. The method of claim 1, wherein the response message includes a bitmap for indicating the at least one action to be performed during the power saving mode.

14. The method of claim 13, wherein the bitmap represented by a plurality of bits, the bit having a value of ‘

0’

represents the action that is disabled.

15. The method of claim 13, wherein the bitmap represented by a plurality of bits, the bit having a value of ‘

1’

represents the action that is enabled.

16. The method of claim 13, wherein the bitmap included in the response message is same as the bitmap included in the request message.

17. The method of claim 13, wherein the bitmap included in the response message is different from the bitmap included in the request message.

18. The method of claim 1, wherein the information is included in a Downlink Channel Descriptor (DCD) message or a Neighbor Advertisement (MOB_NBR-ADV) message.

19. The method of claim 1, wherein the request message is a sleep request (MOB_SLP-REQ) message or a ranging request (RNG-REQ) message.

20. The method of claim 1, wherein the response message is a sleep response (MOB_SLP-REQ) message or a ranging request (RNG-RSP) message.

21. The method of claim 1, wherein the power saving mode is a sleep mode.

22. A method of providing actions related to handover by a base station (BS) for a mobile station (MS) that is in power saving mode in a wireless mobile communication system, the method comprising:

transmitting information to the MS, wherein the information includes at least one action for performing handover and at least one condition corresponding to the at least one action;

receiving a request message from the MS asking to perform at least one action based on the received information; and

transmitting a response message in response to the request message.