METHOD AND APPARATUS FOR SELECTING A LOCATION PLATFORM FOR A USER EQUIPMENT TO ROAM AND METHOD FOR DETERMINING A LOCATION OF A USER EQUIPMENT USING THE SAME
First Claim
1. A method for calculating a location of a User Equipment (UE) that is roaming, the method comprising:
- receiving, by a Home Location Platform (HLP), a location request message from the UE for starting a positioning session with the UE, wherein the location request message includes specific identifier information of an area in which the UE is located, and positioning capability information including a positioning scheme supported by the UE;
determining that the HLP calculated a position estimate;
transmitting a request for an approximate coordinate information to a Visiting Location Platform (VLP);
receiving the approximate coordinate information from the VLP;
exchanging location information with the UE; and
calculating a position of the UE using the exchanged location information.
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Abstract
A method and apparatus for calculating a location of a User Equipment (UE) that is roaming, the method including receiving, by a Home Location Platform (HLP), a location request message from the UE for starting a positioning session with the UE, wherein the location request message includes specific identifier information of an area in which the UE is located, and positioning capability information including a positioning scheme supported by the UE, determining that the HLP calculated a position estimate, transmitting a request for an approximate coordinate information to a Visiting Location Platform (VLP), receiving the approximate coordinate information from the VLP, exchanging location information with the UE, and calculating a position of the UE using the exchanged location information. According to such a method, it is possible to efficiently perform the positioning of the UE, regardless of the location of the UE, thereby improving the quality of the positioning service.
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Citations
20 Claims
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1. A method for calculating a location of a User Equipment (UE) that is roaming, the method comprising:
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receiving, by a Home Location Platform (HLP), a location request message from the UE for starting a positioning session with the UE, wherein the location request message includes specific identifier information of an area in which the UE is located, and positioning capability information including a positioning scheme supported by the UE; determining that the HLP calculated a position estimate; transmitting a request for an approximate coordinate information to a Visiting Location Platform (VLP); receiving the approximate coordinate information from the VLP; exchanging location information with the UE; and calculating a position of the UE using the exchanged location information. - View Dependent Claims (2, 3, 4, 5)
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6. A method for calculating a location of a User Equipment (UE) that is roaming, the method comprising:
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receiving, by a Home Location Platform (HLP), a location request message from the UE for starting a positioning session with the UE, wherein the location request message includes specific identifier information of an area in which the UE is located, and positioning capability information including a positioning scheme supported by the UE; determining that a Visiting Location Platform (VLP) calculated a position estimate; transmitting a request for an approximate coordinate information to the VLP; receiving the approximate coordinate information from the VLP; and receiving and forwarding location information between the UE and the VLP, wherein a position of the UE is calculated using the forwarded location information. - View Dependent Claims (7, 8, 9, 10)
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11. A Home Location Platform (HLP) server for calculating a location of a User Equipment (UE), the server comprising:
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a receiver for receiving a location request message from the UE for starting a positioning session with the UE, receiving an approximate coordinate information being used to calculate a position of the UE from a Visiting Location Platform (VLP), and receiving location information from the UE to exchange the location information with the UE, wherein the location request message includes specific identifier information of an area in which the UE is located, and positioning capability information including a positioning scheme supported by the UE; a transmitter for transmitting a request for the approximate coordinate information to the VLP after determining that the HLP calculated a position estimate and transmitting the location information to the UE to exchange the location information with the UE; and a controller for determining that the HLP calculated the position estimate after receiving the location request message from the UE, and calculating the position of the UE using the exchanged location information. - View Dependent Claims (12, 13, 14, 15)
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16. A Home Location Platform (HLP) server for calculating a location of a User Equipment (UE), the server comprising:
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a receiver for receiving a location request message from the UE for starting a positioning session with the UE, receiving an approximate coordinate information being used to calculate a position of the UE from a Visiting Location Platform (VLP), and receiving location information from the UE to determine the position of the UE, wherein the location request message includes specific identifier information of an area in which the UE is located, and positioning capability information including a positioning scheme supported by the UE; a transmitter for transmitting a request for the approximate coordinate information to the VLP after determining that the VLP calculated a position estimate and transmitting the location information received from the UE to the VLP to determine the position of the UE; and a controller for determining that the VLP calculated the position estimate after receiving the location request message from the UE, and determining the approximate coordinate information being used to calculate the position of the UE. - View Dependent Claims (17, 18, 19, 20)
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Specification