Mobile location based service system and method

• US 20040043773A1
• Filed: 06/05/2003
• Published: 03/04/2004
• Est. Priority Date: 07/25/2002
• Status: Active Grant

• Current Assignee: SK Telecom Co., Ltd.
• Original Assignee: SK Telecom Co., Ltd.
• Inventors: Lee, Sang Yun, Ju, Jae Young, Kim, Ki Mun, No, Yeong Tae, Hahm, Hee Hyeok
• Granted Patent: US 7,257,416 B2
• Time in Patent Office: Days
• US Class Current: 455/456.1
• CPC Class Codes: H04W 64/00 Locating users or terminals or network equipment for network management purposes, e.g. mobility management

Abstract

The present invention discloses a mobile location based service system and method. The mobile location based service system includes an application server for receiving a location based service request, and providing a location based service of a mobile station, and a location information providing system for discriminating location of the mobile station according to a kind of a location information service, and transmitting the location of the mobile station to the application server. A cell or GPS based location based service can be selectively provided according to a function of a mobile station of a mobile communication subscriber and a service request type. The GPS based location based service can be provided by an SMS delivery point to point message through an N07 signal network, and thus embodied during a voice call of the mobile station.

Claims

1. In an apparatus for providing a location based service of a mobile station of a mobile communication subscriber by accessing a web server, a mobile location based service system for providing cell based and GPS based location based services, comprising:

an application server for receiving a location information service request, requesting location information of the mobile station, and providing the location based service according to the request result; and

a location information providing system for receiving a location information request from the application server, discriminating location of the mobile station according to a kind of a location information service provided by a mobile switching center which the mobile station belongs to, by referring to the mobile switching center on the basis of an identification number of the mobile station, and transmitting the location to the application server.

2. The system of claim 1, wherein the location information providing system comprises:

a mobile positioning center for receiving a location information service request from the application server, and transmitting a location information result; and

a positioning determination entity for determining location of the mobile station through the mobile switching center under the control of the mobile positioning center, and outputting the location of the mobile station, when the GPS based service is provided by the mobile switching center.

3. The system of claim 1, wherein the location information providing system transmits data by using an SMDPP message between the mobile switching center and the positioning determination entity.

4. The system of claim 1, wherein the location information providing system comprises:

a mobile positioning center for receiving a location information service request from the application server, and transmitting a location information result; and

a positioning determination entity for determining location of the mobile station through the mobile switching center which the mobile station belongs to under the control of the mobile positioning center, and outputting the location of the mobile station, when the mobile switching center which the reception mobile station roams supports a GPS based location service function.

5. The system of claim 1, wherein the location information providing system comprises:

a mobile positioning center for receiving a location information service request from the application server, and transmitting a location information result; and

a home location register for transmitting location information of the mobile switching center including the mobile station to the mobile positioning center, when the mobile station does not support a GPS function.

6. The system of claim 1, wherein the mobile positioning center of the location information providing system refers to the home location register for SMSADDR of the mobile station.

7. In a method for switching a mobile station of a wireless communication network subscriber in a mobile switching center, tracking location of the mobile station by a GPS upon the request of a positioning determination entity, and providing the location of the mobile station to the positioning determination entity, a mobile location based service method, comprising the steps of:

receiving an SMDPP message from the positioning determination entity, and extracting a data message from the SMDPP message;

when the SMDPP message initiates a location based service, confirming whether a traffic channel has been allocated to a corresponding mobile station;

when the traffic channel has been allocated to the mobile station, transmitting the data message to the mobile station by using the traffic channel;

when the traffic channel has not been allocated to the mobile station, newly allocating a traffic channel to the mobile station, and transmitting the data message to the mobile station by using the traffic channel; and

responding to the positioning determination entity on the basis of a response message from the mobile station.

8. The method of claim 7, wherein the step for confirming whether the traffic channel has been allocated to the mobile station comprises the steps of:

when a parameter of the SMDPP message is resource release, confirming whether a call of the mobile station exists;

when the call exists, releasing a location based service session; and

when the call does not exist, releasing the traffic channel.

9. The method of claim 8, wherein the releasing step comprises a step for transmitting a response message from the mobile station to the positioning determination entity.

10. The method of claim 7, wherein the step for transmitting the data message to the mobile station sets a length of an SMS tele-service identification field as ‘

0’

.

11. The method of claim 7, wherein the location based service method in the mobile switching center comprises the steps of:

when receiving a short message during the location based service, holding the short message;

when the location based service has been ended, transmitting a short message service notification message; and

performing short message reception.

12. The method of claim 11, wherein the step for performing the short message reception comprises a step for transmitting a response message notifying that short message transmission is postponed to a short message service center, when a short message is received during the location based service.

13. The method of claim 7, wherein the location based service method in the mobile switching center comprises the steps of:

when hand-off starts, confirming whether a call of the mobile station exists;

when the call exists, ending only the location based service; and

when the call does not exist, ending the location based service.

14. The method of claim 13, wherein the step for ending the location based service comprises a step for releasing the traffic channel.

15. The method of claim 13, wherein the ending step transmits a message notifying that a network interface is not supported to the positioning determination entity.

16. The method of claim 7, wherein the location based service method in the mobile switching center comprises a step for ending the location based service and performing a general call originating procedure, when the location based service is started in the mobile station in an idle state and the mobile station attempts call origination.

17. The method of claim 16, wherein the step for performing the general call originating procedure comprises a step for transmitting a message notifying that the location based service session is not active to the positioning determination entity.

18. The method of claim 7, wherein the location based service method in the mobile switching center comprises a step for ending a location based service session, when the location based service is started in the mobile station in an idle state and the mobile station attempts call reception.

19. The method of claim 18, wherein the step for ending the location based service session comprises a step for transmitting a message notifying that the mobile station is in a busy state to the positioning determination entity.

20. The method of claim 7, wherein the location based service method in the mobile switching center comprises a step for ending a location based service session, when the location based service is started in the mobile station in a busy state and the mobile station ends a call.

21. The method of claim 20, wherein the step for ending the location based service session comprises a step for transmitting a message notifying that the location based service session is not active to the positioning determination entity.

22. The method of claim 7, wherein the location based service method in the mobile switching center comprises a step for ending a location based service session, when the mobile station is disconnected from the traffic channel during the location based service.

23. The method of claim 22, wherein the step for ending the location based service session comprises a step for transmitting a message notifying that the session is not active to the positioning determination entity, when a release message is received from the mobile station.

24. The method of claim 22, wherein the step for ending the location based service session comprises a step for transmitting a message notifying no acknowledgement to the positioning determination entity, when an acknowledge message is not received from the mobile station in a predetermined time.

25. The method of claim 7, wherein the location based service method in the mobile switching center comprises a step for ending a location based service session and performing a wireless data access procedure, when wireless data access is requested by the mobile station during the location based service.

26. The method of claim 25, wherein the step for performing the wireless data access procedure comprises a step for transmitting a message notifying that the session is not active to the positioning determination entity.

27. The method of claim 7, wherein the location based service method in the mobile switching center comprises a step for ending a location based service session, when the mobile station is powered off during the location based service.

28. The method of claim 27, wherein the step for ending the location based service session comprises a step for transmitting a message notifying that the session is not active to the positioning determination entity.

29. The method of claim 7, wherein the location based service method in the mobile switching center comprises a step for ending a location based service session, when a battery of the mobile station is separated during the location based service.

30. The method of claim 29, wherein the step for ending the location based service session comprises a step for transmitting a message notifying that the session is not active to the positioning determination entity, when a release message is received from the mobile station.

31. The method of claim 29, wherein the step for ending the location based service session comprises a step for transmitting a message notifying no acknowledgement to the positioning determination entity, when an acknowledge message is not received from the mobile station in a predetermined time.

32. The method of claim 7, wherein the location based service method in the mobile switching center comprises a step for initiating a timer, whenever an SMDPP request message is received from the positioning determination entity.

33. The method of claim 32, wherein the step for initiating the timer comprises a step for ending the location based service, when the setup timer is ended.

34. The method of claim 33, wherein the step for ending the location based service comprises a step for transmitting a message notifying no page response to the positioning determination entity, when the SMDPP message is resource allocation.

35. The method of claim 33, wherein the step for ending the location based service comprises a step for transmitting a message notifying that an interface has a problem to the positioning determination entity, when allocation of the traffic channel fails.

36. The method of claim 33, wherein the step for ending the location based service comprises a step for transmitting a message notifying no acknowledgement to the positioning determination entity, when an acknowledge message is not received from the mobile station.