Roaming method and system in location information system
First Claim
1. A method of obtaining position information of a target terminal, the method comprising:
- establishing a transmission control protocol (TCP) connection between the target terminal and a visited network associated with the target terminal, if position information of the target terminal is requested; and
obtaining, by the target terminal or a location server in the visited network, the position information of the target terminal, through the established TCP connection and without a TCP connection between the target terminal and a home network of the target terminal.
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Accused Products
Abstract
A roaming method and system using a SUPL (Secure User Plane Location)-based location information system, are provided. According to an aspect of the present invention, the method can include the steps of establishing a transmission control protocol (TCP) connection between a target terminal and a visited network associated with the target terminal, if position information of the target terminal is requested; and obtaining, by the target terminal or a location server in the visited network, the position information of the target terminal, through the established TCP connection and without a TCP connection between the target terminal and a home network of the target terminal.
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Citations
55 Claims
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1. A method of obtaining position information of a target terminal, the method comprising:
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establishing a transmission control protocol (TCP) connection between the target terminal and a visited network associated with the target terminal, if position information of the target terminal is requested; and
obtaining, by the target terminal or a location server in the visited network, the position information of the target terminal, through the established TCP connection and without a TCP connection between the target terminal and a home network of the target terminal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method for obtaining location information of a SUPL (secure user plane location) enabled terminal, the method comprising:
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receiving, by a target terminal, a SUPL initiate message from a home location server of the target terminal, the SUPL initiate message including address information of a visited location server associated with the target terminal;
establishing a transmission control protocol (TCP) connection with the visited location server based on the received address information; and
conducting a session with the visited location server through the established TCP connection to obtain position information of the target terminal. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20)
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21. A roaming method for a secure user plane location (SUPL) enabled terminal, the method comprising:
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establishing a transmission control protocol (TCP) connection with a home location server of a target terminal, obtaining address information of a visited location server associated with the target terminal through the TCP connection, and then releasing the TCP connection with the home location server; and
establishing a TCP connection with the visited location server based on the obtained address information after the TCP connection with the home location server is released, obtaining position information of the target terminal through the TCP connection with the visited location server, and then releasing the TCP connection with the visited location server. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28)
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29. A system for obtaining position information of a target terminal, the system comprising:
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a target terminal;
a home network associated with the target terminal; and
a visited network to which the target terminal roams and including a location server, wherein a transmission control protocol (TCP) connection is established between the target terminal and the visited network, if position information of the target terminal is requested, and the target terminal or the location server in the visited network obtains the position information of the target terminal, through the established TCP connection and without a TCP connection between the target terminal and the home network. - View Dependent Claims (30, 31, 32, 33, 34, 35, 36, 37, 38)
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39. A secure user plane location (SUPL) enabled terminal comprising:
at least one processor configured to receive a SUPL initiate message from a home location server of the terminal, the SUPL initiate message including address information of a visited location server associated with the terminal, to establish a transmission control protocol (TCP) connection with the visited location server based on the received address information, and to conduct a session with the visited location server through the established TCP connection for obtaining position information of the terminal. - View Dependent Claims (40, 41, 42, 43, 44, 45)
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46. A secure user plane location (SUPL) enabled terminal comprising:
at least one processor configured to establish a transmission control protocol (TCP) connection with a home location server of the terminal, to obtain address information of a visited location server associated with the terminal through the TCP connection, and then to release the TCP connection with the home location server; and
thereafter to establish a TCP connection with the visited location server based on the obtained address information, to obtain position information of the terminal through the TCP connection with the visited location server, and then to release the TCP connection with the visited location server.- View Dependent Claims (47, 48, 49, 50, 51)
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52. A SUPL (secure user plane location) roaming method in a SUPL-based location information system including a target SET (SUPL enabled terminal), a SUPL agent, a R-SLP (requesting SUPL location platform), a H-SLC (home SUPL location center) in a home network of the target SET, a V-SLC (visited SUPL location center) in a visited network of the target SET, and a V-SPC (visited SUPL positioning center) in the visited network of the target SET, the method comprising:
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transmitting a MLP (mobile location protocol) SLIR (standard location immediate request) message from the SUPL agent to the R-SLP to request location information of the target SET;
transmitting a RLP (roaming location protocol) SRLIR (SUPL roaming location immediate request) message from the R-SLP to the H-SLC;
checking, by the H-SLC, whether the target SET supports a SUPL function and whether the target SET is located in a roaming service area;
transmitting a RLP SSRLIR (standard SUPL roaming location immediate request) message from the H-SLC to the V-SLC to request address information of the V-SPC of the roaming service area;
conducting an internal initialization through communication between the V-SLC and the V-SPC to inform the V-SPC that a SUPL POS (positioning) procedure preparation will start, and transmitting address and port number information of the V-SPC from the V-SPC to the V-SLC through internal communication;
transmitting a RLP answer message responding to the RLP SSRLIR message from the V-SLC to the H-SLC, the RLP answer message including the address and port number information of the V-SPC;
transmitting a SUPL INIT (initiate) message from the H-SLC to the target SET, the SUPL INIT message including the address and port number information of the V-SPC, and a session identification;
performing a data connection set up by the target SET;
transmitting a SUPL POS INIT message from the target SET to the V-SPC using the received address and port number information, so as to establish a communication connection between the target SET and the V-SPC;
conducting internal communication between the V-SPC and the V-SLC;
conducting the SUPL POS procedure through the communication connection established between the target SET and the V-SPC and thereby calculating the location information of the target SET; and
transmitting a SUPL END message from the V-SPC to the target SET and thereby releasing the communication connection between the target SET and the V-SPC. - View Dependent Claims (53)
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54. A SUPL (secure user plane location) roaming method in a SUPL-based location information system including a target SET (SUPL enabled terminal), a H-SLC (home SUPL location center) in a home network of the target SET, a V-SLC (visited SUPL location center) in a visited network of the target SET, and a V-SPC (visited SUPL positioning center) in the visited network of the target SET, the method comprising:
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conducting a data setup by the target SET;
transmitting a SUPL START message from the target SET to the H-SLC, the SUPL START message including a session identification;
checking routing information associated with the target SET by the H-SLC;
transmitting a RLP (roaming location protocol) SRLIR (SUPL roaming location immediate request) message from the H-SLC to the V-SLC to request address information of the V-SPC;
conducting an internal initialization through communication between the V-SLC and the V-SPC to inform the V-SPC that a SUPL POS (positioning) procedure preparation will start, and transmitting address and port number information of the V-SPC from the V-SPC to the V-SLC through internal communication;
transmitting a RLP answer message responding to the RLP SSRLIR message from the V-SLC to the H-SLC, the RLP answer message including the address and port number information of the V-SPC;
transmitting a SUPL RESPONSE message from the H-SLC to the target SET, the SUPL INIT message including the address and port number information of the V-SPC, and a session identification;
transmitting a SUPL POS INIT message from the target SET to the V-SPC using the received address and port number information so as to establish a communication connection between the target SET and the V-SPC;
conducting internal communication between the V-SPC and the V-SLC;
conducting the SUPL POS procedure through the communication connection established between the target SET and the V-SPC and thereby calculating location information of the target SET; and
transmitting a SUPL END message from the V-SPC to the target SET and thereby releasing the communication connection between the target SET and the V-SPC. - View Dependent Claims (55)
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Specification