METHOD AND SYSTEM FOR SUPPORTING MULTIPLE PAGING AREAS

• US 20100255860A1
• Filed: 02/09/2010
• Published: 10/07/2010
• Est. Priority Date: 04/06/2009
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Ji, Baowei
• Granted Patent: US 8,929,926 B2
• Time in Patent Office: Days
• US Class Current: 455/458
• CPC Class Codes: H04W 68/00 User notification, e.g. alerting and paging, for incoming communication, change of service or the like

Abstract

A wireless communication network comprising a plurality of paging controllers capable of communication with a plurality of base stations within a coverage area of the network is provided. At least one of the plurality of paging controllers is configured to assign one or more paging identifications (PG IDs) to a subscriber station within a paging area when the subscriber station requests to enter idle mode, wherein each of the one or more PG IDs is associated with a paging offset, and transmit the one or more PG IDs to a base station in communication with the subscriber station. The subscriber station only monitors the PG ID having a shortest paging offset among the one or more PG IDs.

Claims

1. A wireless communication network comprising a plurality of paging controllers capable of communication with a plurality of base stations within a coverage area of the network, wherein at least one of the plurality of paging controllers is configured to:

assign one or more paging identifications (PG IDs) to a subscriber station within a paging area when the subscriber station requests to enter idle mode, wherein each of the one or more PG IDs is associated with a paging offset; and

transmit the one or more PG IDs to a base station in communication with the subscriber station,

wherein the subscriber station only monitors the PG ID having a shortest paging offset among the one or more PG IDs.

2. A network in accordance with claim 1 wherein if the subscriber station is assigned only one PG ID, the paging controller is further configured to instruct all of the base stations with the one PG ID in the paging area to page the subscriber station in a paging offset associated with the one PG ID starting from the beginning of a current paging cycle.

3. A network in accordance with claim 1 wherein if the subscriber station is assigned two or more PG IDs, the paging controller is further configured to:

determine a first PG ID having a first shortest paging offset among the two or more PG IDs; and

to instruct all of the base stations with the first PG ID in the paging area to page the subscriber station in the first shortest paging offset starting from the beginning of a current paging cycle.

4. A network in accordance with claim 3 wherein if the network fails to receive a response to the page from the subscriber station, the paging controller is further configured to:

determine a second PG ID having a second shortest paging offset among the two or more PG IDs; and

to instruct all of the base stations with the second PG ID in the paging area to page the subscriber station in the second shortest paging offset starting from the beginning of a current paging cycle.

5. A paging controller configured to:

assign one or more paging identifications (PG IDs) to a subscriber station within a paging area when the subscriber station requests to enter idle mode, wherein each of the one or more PG IDs is associated with a paging offset; and

transmit the one or more PG IDs to a base station in communication with the subscriber station,

wherein the subscriber station only monitors the PG ID having a shortest paging offset among the one or more PG IDs.

6. A subscriber station configured to:

receive one or more paging identifications (PG IDs) when the subscriber station requests to enter idle mode, wherein each of the one or more PG IDs is associated with a paging offset; and

monitor only the PG ID having a shortest paging offset among the one or more PG IDs.

7. A subscriber station in accordance with claim 6 wherein the subscriber station is further configured to perform a location update when a base station in communication with the subscriber station fails to broadcast at least one of the one or more PG IDs.

8. A subscriber station configured to:

start a timer when the subscriber station leaves a first primary paging group assigned to the subscriber station;

perform a location update when the timer expires before the subscriber station enters a second primary paging group assigned to the subscriber station; and

stop the timer when the subscriber station enters the second primary paging group before the timer expires,

wherein the first primary paging group is different from the second primary paging group.

9. A subscriber station in accordance with claim 8 wherein the subscriber station performs a location update upon entering the second primary paging group.

10. A method of paging a subscriber station, the method comprising:

paging the subscriber station only in a particular primary paging group, while refraining from paging the subscriber station in other primary paging groups, when the subscriber station is in a primary paging group; and

paging the subscriber station in a first secondary paging group with a first shortest paging offset, while refraining from paging the subscriber station in primary paging groups, when the subscriber station is in a secondary paging group.

11. A method in accordance with claim 10 further comprising:

paging the subscriber station in the first secondary paging group with the first shortest paging offset when the subscriber station fails to respond to the paging the particular primary paging group.

12. A method in accordance with claim 10 further comprising:

paging the subscriber station in a second secondary paging group with the second shortest paging offset when the subscriber station fails to respond to the paging in the first secondary paging group.

13. A method in accordance with claim 12 further comprising:

paging the subscriber station in a next paging cycle when there are no remaining secondary paging groups.

14. A wireless communication network comprising a plurality of paging controllers capable of communication with a plurality of base stations within a coverage area of the network, wherein at least one of the plurality of paging controllers is configured to:

page a subscriber station only in a particular primary paging group and refrain from paging the subscriber station in other primary paging groups when the subscriber station is in a primary paging group; and

page the subscriber station in a first secondary paging group with a first shortest paging offset and refrain from paging the subscriber station in primary paging groups when the subscriber station is in a secondary paging group.

15. A network in accordance with claim 14 wherein the at least one of the plurality of paging controllers is further configured to:

page the subscriber station in the first secondary paging group with the first shortest paging offset when the subscriber station fail to respond to the paging the particular primary paging group.

16. A network in accordance with claim 14 wherein the at least one of the plurality of paging controllers is further configured to:

page the subscriber station in a second secondary paging group with the second shortest paging offset when the subscriber station fails to respond to the paging in the first secondary paging group.

17. A network in accordance with claim 16 wherein the at least one of the plurality of paging controllers is further configured to:

page the subscriber station in a next paging cycle when there are no remaining secondary paging groups.

18. A paging controller configured to:

page a subscriber station only in a particular primary paging group and refrain from paging the subscriber station in other primary paging groups when the subscriber station is in a primary paging group; and

page the subscriber station in a first secondary paging group with a first shortest paging offset and refrain from paging the subscriber station in primary paging groups when the subscriber station is in a secondary paging group.

19. A paging controller in accordance with claim 18 wherein the paging controller is further configured to:

page the subscriber station in the first secondary paging group with the first shortest paging offset when the subscriber station fail to respond to the paging the particular primary paging group.

20. A paging controller in accordance with claim 18 wherein the paging controller is further configured to:

page the subscriber station in a second secondary paging group with the second shortest paging offset when the subscriber station fails to respond to the paging in the first secondary paging group.