Controlling idle mode of mobile subscriber station in wireless access system

• US 7,894,831 B2
• Filed: 06/06/2005
• Issued: 02/22/2011
• Est. Priority Date: 06/08/2004
• Status: Expired due to Fees

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Kim, Beum Joon, Ryu, Ki Seon
• Primary Examiner(s): Santiago-Cordero; Marivelisse
• Assistant Examiner(s): Lau; Yungsang
• Application Number:
  US11/146,542
• Publication Number:
  US 20060009241A1
• Time in Patent Office: 2,087 Days
• Field of Search: 455/456, 455/458, 455/432.1, 455/435.1, 455436-444, 370/329, 370/331
• US Class Current: 455/458
• CPC Class Codes: H04W 60/00 Affiliation to network, e.g. registration; Terminating affiliation with the network, e.g. de-registration
• 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 of controlling idle mode comprises requesting to enter idle mode by a mobile subscriber station by transmitting an idle mode request to a serving base station having a serving paging group identifier with which the serving base station is associated. The method also comprises entering the idle mode by receiving an idle mode grant command from the serving base station. The method also comprises initiating a ranging request between the mobile subscriber station and the target base station associated with the target paging group, wherein the ranging request comprises the serving base station identifier and the serving paging group identifier. The method also comprises connecting with the target base station, wherein the serving base station is informed, by using the serving base station identifier, that the mobile subscriber station is not in the idle mode with the serving base station.

Claims

1. A method of controlling idle mode between a mobile subscriber station and a network at least comprising a serving base station and a target base station, the method comprising:

requesting to enter an idle mode by the mobile subscriber station by transmitting an idle mode request to the serving base station;

entering the idle mode by receiving an idle mode grant command from the serving base station, the idle mode grant command including an identifier (ID) of a paging controller which is a network entity retaining service and operational information for the mobile subscriber station and/or administering paging activity for the mobile subscriber station while in the idle mode;

transmitting a ranging request message to the target base station, wherein the ranging request message includes the paging controller ID;

receiving a ranging response message in response to the ranging request message from the target base station; and

performing a network re-entry procedure with the target base station based on the ranging response message,

wherein the target base station informs the serving base station via the paging controller using the paging controller ID that the idle mode of the mobile subscriber station is terminated.

2. The method of claim 1, wherein the ranging request message further comprises a location update request.

3. The method of claim 2, wherein the ranging response message includes a location update response.

4. The method of claim 1, wherein the network entity is the serving base station.

5. The method of claim 1, wherein the network entity is an entity other than the serving base station.

6. A method of controlling idle mode between a mobile subscriber station and a network comprising at least a serving base station and a target base station, the method comprising:

receiving an idle mode request from the mobile subscriber station at the serving base station to enter an idle mode by the mobile subscriber station;

transmitting an idle mode grant command to the mobile subscriber station from the serving base station, the idle mode grant command including an identifier (ID) of a paging controller which is a network entity retaining service and operational information for the mobile subscriber station and/or administering paging activity for the mobile subscriber station while in the idle mode;

receiving a ranging request message from the mobile subscriber station at the target base station, wherein the ranging request message includes the paging controller ID;

transmitting a ranging response message from the target base station to the mobile subscriber station in response to the ranging request message; and

performing a network re-entry procedure at the mobile subscriber station with the target base station based on the ranging response message,

wherein the target base station informs the serving base station via the paging controller using the paging controller ID that the idle mode of the mobile subscriber station is terminated.

7. The method of claim 6, wherein the raging request message further comprises a location update request.

8. The method of claim 7, further comprising:

transmitting an idle mode information request message from the target base station to the paging controller; and

receiving an idle mode information response at the target base station from the paging controller.

9. The method of claim 6, wherein the network entity is the serving base station.

10. The method of claim 6, wherein the network entity is an entity other than the serving base station.