System and method for fast paging in a wireless mobile communication system based on internet protocol

• US 20070055778A1
• Filed: 08/25/2006
• Published: 03/08/2007
• Est. Priority Date: 08/25/2005
• Status: Active Grant

• Current Assignee: Ueran Technology LLC
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Yun, Sang-Boh, Park, Chi-Hyun, Lee, Ok-Seon, Cheon, Jung-Hoon
• Granted Patent: US 7,986,677 B2
• Time in Patent Office: Days
• US Class Current: 709/226
• CPC Class Codes: H04L 61/5084 Providing for device mobility network addressing or numbering for mobility support in wireless networks H04W8/26; mobile IP H04W80/04
• 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 80/04 Network layer protocols, e.g. mobile IP [Internet Protocol]

Abstract

A system is provided for performing location update in a wireless mobile communication system that uses an Internet protocol (IP) address and is classified as at least one paging group. A serving base station (BS) sends a message including an identifier of a paging group where the serving BS is located, determines whether there is a change in IP subnet of a mobile station (MS) upon receipt of a location update request from the MS, and upon recognizing a change in IP subnet of the MS, stores information on a new IP subnet and notifies the change in the IP subnet to the MS. Upon detecting a need for location update, the MS sends a request for location update to a serving BS, and receives a location update success notification and an allocated temporary IP address from the serving BS.

Claims

1. A method for performing location update by a mobile station (MS) in a wireless mobile communication system that uses an Internet protocol (IP) address and is classified as at least one paging group, the method comprising the steps of:

sending, upon detecting a need for the location update, a request for the location update to a serving base station (BS); and

receiving a location update success notification and an allocated temporary IP address from the serving BS.

2. The method of claim 1, further comprising receiving from the serving BS, in response to the location update request, a notification indicating that the MS has succeeded in location update and has moved, changing an IP subnet area.

3. The method of claim 2, further comprising, upon detecting a need for generating an IP address, performing an IP address generation and registration procedure with an upper network entity.

4. The method of claim 1, wherein the step of detecting a need for location update further comprises:

receiving, from the serving BS, a current paging group identifier (PG_ID) included in a paging advertisement (MOB_PAG-ADV) message or a downlink channel descript (DCD) message transmitted in a current frame interval;

comparing the current PG_ID with a previous PG_ID received in a previous frame interval; and

detecting a need for the location update, if the current PG_ID is different from the previous PG_ID.

5. The method of claim 1, wherein the location update request is sent using a ranging request (RNG-REQ) message.

6. The method of claim 1, wherein the step of receiving a location update success notification and an allocated temporary IP address from the serving BS is performed using a location update response field in a Type/Length/Value (TLV) field included in a ranging response (RNG-RSP) message.

7. The method of claim 2, wherein the MS is notified from the serving BS that the MS has succeeded in location update and has moved, changing an IP subnet area, using a location update response field in a TLV field included in an RNG-RSP message.

8. A method for performing location update by a serving base station (BS) including a paging controller in a wireless mobile communication system that uses an Internet protocol (IP) address and is classified as at least one paging group, the method comprising the steps of:

sending a message including an identifier of a paging group where the serving BS is located;

receiving a location update request from a mobile station (MS);

determining whether there is a change in IP subnet of the MS;

upon recognizing the change in the IP subnet of the MS, storing information on a new IP subnet; and

notifying the change in the IP subnet to the MS.

9. The method of claim 8, further comprising:

generating a temporary IP address, upon recognizing the change in the IP subnet of the MS; and

sending the generated temporary IP address to the MS.

10. The method of claim 9, wherein the temporary IP address is sent along with a ranging response (RNG-RSP) message.

11. The method of claim 8, wherein the identifier of the paging group is included in a paging advertisement (MOB_PAG-ADV) message, and the MOB_PAG-ADV message is sent to an MS distinguished by an IP subnet area.

12. A system for performing location update in a wireless mobile communication system that uses an Internet protocol (IP) address and is classified as at least one paging group, the system comprising:

a mobile station (MS); and

a serving base station (BS) including a paging controller;

wherein the serving BS sends a message including an identifier of a paging group where the serving BS is located, determines whether there is a change in IP subnet of the MS upon receipt of a location update request from the MS, and upon recognizing a change in IP subnet of the MS, stores information on a new IP subnet and notifies the change in the IP subnet to the MS;

wherein upon detecting a need for the location update, the MS sends a request for the location update to a serving BS, and receives a location update success notification and an allocated temporary IP address from the serving BS.

13. The system of claim 12, wherein upon receipt of the location update request from the MS, the serving BS sends a notification indicating that the MS has succeeded in the location update and has moved, changing an IP subnet area.

14. The system of claim 12, wherein the MS receives from the serving BS a current paging group identifier (PG_ID) included in a paging advertisement (MOB_PAG-ADV) message or a downlink channel descript (DCD) message transmitted in a current frame interval, compares the current PG_ID with a previous PG_ID received in a previous frame interval, and detects a need for location update, if the current PG_ID is different from the previous PG_ID.

15. The system of claim 12, wherein the MS sends the location update request using a ranging request (RNG-REQ) message.

16. The system of claim 12, wherein the MS receives the location update success notification and the allocated temporary IP address from the serving BS, using a location update response field in a Type/Length/Value (TLV) field included in a ranging response (RNG-RSP) message received from the serving BS.

17. The system of claim 12, wherein the MS is notified from the serving BS that the MS has succeeded in the location update and has moved, changing an IP subnet area, using a location update response field in a Type/Length/Value (TLV) field included in a ranging response (RNG-RSP) message.

18. The system of claim 12, wherein upon recognizing the change in the IP subnet of the MS, the serving BS generates a temporary IP address, and sends the generated temporary IP address to the MS.

19. The system of claim 18, wherein the serving BS sends the temporary IP address along with a ranging response (RNG-RSP) message.

20. The system of claim 12, wherein the serving BS includes the identifier of the paging group in a paging advertisement (MOB_PAG-ADV) message, and sends the MOB_PAG-ADV message to an MS distinguished by an IP subnet area.