Location service providing system and method for providing triggered location request service

摘要

Disclosed are a location service providing system and a method for providing a triggered location request service. An H-SLP sets a priority order of a plurality of positioning methods which a target terminal supports according to a set priority order set condition and transmits priority order information according to respective positioning methods to the target terminal. Further, the target terminal may receive information about the positioning methods including the priority order and select a positioning method having the highest priority order among the positioning methods, which can be used in its current electric wave environment. Moreover, the H-SLP and the target terminal may calculate a location of the target terminal according to a positioning method that the target terminal has selected. Accordingly, although it is difficult to calculate the location of the target terminal according to the positioning method that the target terminal has selected, a location service of the target terminal can be continuously provided.

主权项

1. A location server for providing a location information service to a terminal comprising:
an interface for receiving and transmitting messages from/to a target terminal; a location server memory unit for storing priority order set condition information which is set according to a service provider's policy or a user's selection to calculate a current location of the target terminal; and a location server controller for: transmitting an initial location service request message to the target terminal; receiving a location information providing service start message as response to the initial location service request message from the target terminal, the location information providing service start message including information with respect to positioning methods that the target terminal supports; generating a priority order list including information of the positioning methods received from the target terminal and priority order information corresponding to the received positioning methods, wherein the priority order list is generated by comparing the priority order set condition information with the location information providing service start message received from the target terminal, and setting a priority order with respect to the received positioning methods; transmitting a location information providing service response message including the priority order list to the target terminal by the location server; and receiving information with respect to a specific positioning method from the target terminal, the specific positioning method being selected by the target terminal from the positioning methods in the location information providing service response message based on a condition of the target terminal.