SYSTEM AND METHOD FOR HANDLING MOBILE STATION LOCATION UPDATE

• US 20070218926A1
• Filed: 03/12/2007
• Published: 09/20/2007
• Est. Priority Date: 02/16/2006
• Status: Abandoned Application

• Current Assignee: Huawei Technologies Co., Ltd. (Huawei Investment & Holding Co., Ltd.)
• Original Assignee: Huawei Technologies Co., Ltd. (Huawei Investment & Holding Co., Ltd.)
• Inventors: Zhuang, Hongcheng, Song, Yi
• Application Number:
  US11/685,150
• Publication Number:
  US 20070218926A1
• Time in Patent Office: Days
• US Class Current: 455/466
• 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
• CPC Class Codes: H04W 8/04 Registration at HLR or HSS [Home Subscriber Server]
• CPC Class Codes: H04W 8/06 Registration at serving network Location Register, VLR or user mobility server

Abstract

The present invention relates to WiMAX communication technology, and particularly relates to a method and a system for handling Mobile Station location update in a WiMAX system, in order to solve the problems in the existing technology that a Paging Controller cannot perform a corresponding process based on the location update type of the Mobile Station, which results in location update low success rate. In the aforesaid technical proposal of the present invention, when a Paging Agent performs location update in a Mobile Station, it sends a location update request to a Paging Controller, and the location update request carries information indicating the Mobile Station location update type; after the Paging Controller successfully performs location update in the Mobile Station, it performs the corresponding process to the information indicating the location update type. The said location update type information is indicated through a corresponding flag bit set in the relevant message or an optional information unit.

Claims

1. A method for performing location update in a WiMAX system, the method comprising:

sending a first request from a paging agent to a paging controller for a location update for a mobile station, the request including information with a type of the location update;

processing information based on the type by the paging controller if the location update is successfully performed.

2. The method of claim 1 further comprising:

sending a second request from the mobile station to the paging agent, the second request being associated with a range information and the location update, the range information including the type;

wherein;

the sending a first request comprises receiving the second request by the paging agent, the request including information with a type of the location update.

3. The method of claim 2 further comprising:

assigning the mobile station to a paging group by the paging controller upon receiving the first request;

providing a first response for location update to the paging agent through a paging relay, the first response including information associated with the type and an identification of the paging group;

sending a second response from the paging agent to the mobile station, the second response including a range information and the identification of the paging group;

sending a confirmation from the paging agent to the paging controller through the paging relay, the confirmation being associated with the location update and the type;

performing a corresponding process by the paging controller upon receiving the confirmation, the corresponding process being based on the type.

4. The method of claim 2 further comprising:

storing the type information by the paging controller upon receiving the first request;

assign the mobile station to a paging group by the paging controller;

providing a location update response to the paging agent through a paging relay, the response including an identification associated with the paging group;

sending a range response from the paging agent to the mobile station, the range response including the identification associated with the paging group;

sending a confirmation from the paging agent to the paging controller through the paging relay;

performing a corresponding process by the paging controller upon receiving the confirmation, the corresponding process being based on the type.

5. The method of claim 1 wherein the type is indicated by a flag bit in a location update message.

6. The method of claim 1 wherein the type is location update triggered by a paging group, a location trigger by a timer update, a location update trigger by a power down indication, or a location update trigger by a MAC hash skip threshold.

7. The method of anyone of claim 1 wherein the type is indicated by providing an optional field in a message for the location update.

8. The method of claim 7 wherein the optional filed includes a first field associated with a location update triggered by a power down indicator.

9. The method of claim 7 wherein the type includes location update triggered by MAC Hash Skip Threshold, and the optional field includes a second field indicating the location update being triggered by MAC Hash Skip Threshold.

10. The method claim 8 wherein the type includes location update triggered by MAC Hash Skip Threshold, and the optional field includes a second field indicating the location update being triggered by MAC Hash Skip Threshold.

11. The method of claim 8 wherein:

the type includes location update triggered by paging group update date or location update triggered by a timer update;

when the first field and the second filed are null, the paging controller determines whether a based station serving the mobile station currently belongs to a paging group, the paging group being associated with the mobile station;

triggering a location update by the timer update if the base station and the mobile stations are associated with a same paging group;

triggering a location update by the paging controller if the base station and the mobile stations are not associated with a same paging group.

12. The method of claim 9 wherein:

the type includes a location update triggered by a paging group update;

the optional field includes a third information field for the location update triggered by the paging group update;

the type includes location update triggered by timer update;

the optional field includes a fourth field including a location update triggered by the timer update.

13. A system for providing location update for one or more mobile stations in a WiMAX network, the system comprising:

a mobile station;

a paging agent configured to performing location update for a mobile station;

a paging controller configured to performing a process based on information associated with a location update type after a successful location update by the mobile station.

wherein;

the paging agent send s a location update request to the paging controller, the location update request including the location update type.

14. The system of claim 13 further comprising a paging relay, wherein:

the mobile station sends a ranging request for performing a location update to the paging agent for the location update, the ranging request including information indicating the location update type;

the paging agent sends the location update request upon receiving the ranging request through the paging relay, the location update request including information associated with the location update type.

15. The system of claim 14 wherein:

the paging controller includes a first assignment module and a first processing module;

the assignment module is configured to assign a paging group to the mobile station and provide a location update response to the paging agent through the paging relay upon receiving the location update request, the location update response including information associated with the type and an identification of the paging group;

the paging agent is configured to sends a ranging response message to the mobile station, the ranging response including the identification of the paging group;

the paging agent is further configured to send a confirmation to the paging controller through the paging relay, the confirmation including information associated the location update type;

the first processing module, upon receiving the location update confirmation, performs a process based on the location update type.

16. The system of claim 14 wherein:

the paging controller includes a second assignment module, a storage module, and a second processing module;

the second assignment module is configured to record information associated with the location update to the storage module upon receiving the location update request;

the second assignment module is further configured to assign a mobile station to a paging group and to provide a location update response to the paging agent through the paging relay, the location update including an identification for the paging group;

the paging agent is further configured to send a confirmation to the paging controller through the paging relay, the confirmation including information associated the location update type;

the second processing module, upon receiving the location update confirmation, performs a process based on the location update type.