Method for performing location update of mobile station in idle mode

• US 8,335,518 B2
• Filed: 08/10/2009
• Issued: 12/18/2012
• Est. Priority Date: 08/10/2008
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Park, Gi Won, Kim, Yong Ho, Ryu, Ki Seon
• Primary Examiner(s): Ajibade Akonai, Olumide T
• Assistant Examiner(s): Zhang, Edward
• Application Number:
  US12/538,472
• Publication Number:
  US 20100035633A1
• Time in Patent Office: 1,226 Days
• Field of Search: 4554561-457, 455/432.1, 455/435.1, 455/435.2, 455/435.3, 455/440, 455/442
• US Class Current: 455/456.1
• CPC Class Codes: H04W 60/04 using triggered events
• CPC Class Codes: H04W 68/00 User notification, e.g. alerting and paging, for incoming communication, change of service or the like

Abstract

A method for performing location update in various manners when a mobile station (MS) travels between paging groups in a wireless access system. A method for performing location update of an MS includes steps of transmitting a ranging request message (REG-REQ) including mobility information to a base station, wherein the mobility information represent a mobility of the mobile station; and receiving a ranging response message (RNG-RSP) including paging group information related with new paging group from the base station, wherein the new paging group is assigned based on the mobility information.

Claims

1. A method for performing a location update of a mobile station in an idle mode, the method comprising:

transmitting, by the mobile station to a base station, a ranging request (RNG-REQ) message including mobility information to perform the location update wherein the mobility information represent a mobility of the mobile station; and

receiving, by the mobile station, a ranging response (RNG-RSP) message including paging group information related with a new paging group from the base station,

wherein the new paging group is assigned based on the mobility information, and

wherein the mobility indicates a speed of the mobile station as one of slow, medium, or fast.

2. The method according to claim 1, further comprising:

transmitting a deregistration request (DREG-REQ) message to initiate the idle mode, to the base station; and

receiving a deregistration command (DREG-CMD) message allowing the initiation of the idle mode

wherein the DREG-REQ message comprises mobility information representing a mobility of the mobile station, which is in normal mode.

3. The method according to claim 1, wherein the mobile station is assigned to one or more paging groups, and

wherein one of the one or more paging groups is a primary paging group and a remainder of the one or more paging groups are secondary paging groups.

4. The method according to claim 3, wherein the primary paging group is a small paging group and at least one of the secondary paging groups is a large paging group.

5. The method according to claim 3, wherein a size of the primary paging group and a size of at least one of the secondary paging groups are different from each other.

6. The method according to claim 3, wherein the base station belongs to at least one of the one or more paging groups.

7. A method for supporting a location update of a mobile station in an idle mode, the method comprising:

receiving, by a base station from the mobile station, a ranging request (RNG-REQ) message for performing the location update wherein the RNG-REQ message comprises mobility information representing a mobility of the mobile station;

transmitting a ranging response (RNG-RSP) message including paging group information related with a new paging group to the mobile station,

wherein the new paging group is assigned by the base station based on the mobility information, and

wherein the mobility indicates a speed of the mobile station as one of slow, medium, or fast.

8. The method according to claim 7, further comprising:

receiving a deregistration request (DREG-REQ) message to initiate the idle mode, from the mobile station; and

transmitting a deregistration command (DREG-CMD) message allowing an initiation of the idle mode, to the mobile station,

wherein the DREG-REQ message comprises mobility information representing a mobility of the mobile station which is in normal mode.

9. The method according to claim 7, wherein the mobile station is assigned to one or more paging groups, and

wherein one of the one or more paging groups is a primary paging group and a remainder of the one or more paging groups are secondary paging groups.

10. The method according to claim 9, wherein the primary paging group is a small paging group and at least one of the secondary paging groups is a large paging group.

11. The method according to claim 9, wherein a size of the primary paging group and a size of at least one of the secondary paging groups are different from each other.

12. The method according to claim 9, wherein the base station belongs to at least one of the one or more paging groups.

13. A mobile station for performing a location update in an idle mode, the mobile station comprising:

a transmitter configured to transmit a message; and

a receiver configured to receive a message,

wherein the mobile station is configured to;

transmit a ranging request (RNG-REQ) message including mobility information to a base station via the transmitter, wherein the mobility information represent a mobility of the mobile station; and

receive a ranging response (RNG-RSP) message including paging group information related with a new paging group from the base station via the receiver,

wherein the new paging group is assigned based on the mobility information, and

wherein the mobility indicates a speed of the mobile station as one of slow, medium, or fast.

15. The mobile station according to claim 13, which is further configured to:

transmit a deregistration request (DREG-REQ) message to initiate the idle mode to the base station via the transmitter; and

receive a deregistration command (DREG-CMD) message allowing an initiation of the idle mode via the receiver,

wherein the DREG-REQ message comprises mobility information representing a mobility of the mobile station, which is in normal mode.

16. The mobile station according to claim 15, wherein the mobile station is assigned to one or more paging groups, and

wherein one of the one or more paging groups is a primary paging group and a remainder of the one or more paging groups are secondary paging groups.

14. A base station for supporting a location update of a mobile station in an idle mode, the base station comprising:

a transmitter configured to transmit a message; and

a receiver configured to receive a message,

wherein the base station is configured to;

receive a ranging request (RNG-REQ) message including mobility information from the mobile station via the receiver, wherein the mobility information represent a mobility of the mobile station; and

transmit a ranging response (RNG-RSP) message including paging group information related with a new paging group to the mobile station via the transmitter,

wherein the new paging group is assigned based on the mobility information, and

wherein the mobility indicates a speed of the mobile station as one of slow, medium, or fast.

17. The base station according to claim 14, wherein the base station is further configured to:

receive a deregistration request (DREG-REQ) message to initiate the idle mode to the base station via the receiver; and

transmit a deregistration command (DREG-CMD) message allowing an initiation of the idle mode via the transmitter,

wherein the DREG-REQ message comprises mobility information representing a mobility of the mobile station, which is in normal mode.

18. The base station according to claim 17, wherein the mobile station is assigned to one or more paging groups, and

wherein one of the one or more paging groups is a primary paging group and the remainder of the one or more paging groups are secondary paging groups.