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 the steps of:
- receiving, by a home location platform (HLP), a location request message from the UE, including specific identifier information of an area in which the UE is located and positioning capability information including positioning schemes which the UE supports;
determining, by the HLP having received the location request message from the UE, a visiting location platform (VLP) where the UE is located, by referring to information included in the location request message, the VLP being a location platform to calculate the location of the UE;
transmitting the specific identifier information and the positioning capability information received from the UE to the VLP; and
receiving the location of the UE calculated from the VLP, the VLP calculating the location of the UE with the positioning scheme corresponding to the positioning capability information received from the UE.
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Abstract
A method and an apparatus for selecting a location platform for a user equipment to roam and a method for determining the location of the user equipment using the same. The method for selecting a location platform includes: checking a visiting network of the UE in response to a location request message transmitted from the UE which is roaming; and selecting a location platform to calculate a location of the UE by comparing positioning capability information of the checked visiting network and positioning capability information of a home network of the UE. 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
22 Claims
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1. A method for calculating a location of a user equipment (UE) that is roaming, the method comprising the steps of:
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receiving, by a home location platform (HLP), a location request message from the UE, including specific identifier information of an area in which the UE is located and positioning capability information including positioning schemes which the UE supports; determining, by the HLP having received the location request message from the UE, a visiting location platform (VLP) where the UE is located, by referring to information included in the location request message, the VLP being a location platform to calculate the location of the UE; transmitting the specific identifier information and the positioning capability information received from the UE to the VLP; and receiving the location of the UE calculated from the VLP, the VLP calculating the location of the UE with the positioning scheme corresponding to the positioning capability information received from the UE. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method for calculating a location of a user equipment (UE), the method comprising the steps of:
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receiving, by a home location platform (HLP), a location request message including specific identifier information of an area in which the UE is located and positioning capability information including positioning schemes which the UE supports, the HLP being a location platform to calculate a location of the UE; transmitting the specific identifier information received from the UE to a visiting location platform (VLP); receiving approximate coordinate information of the specific identifier information calculated from the VLP; and calculating, by the HLP, the location of the UE with the positioning scheme corresponding to the positioning capability information of the UE and the approximate coordinate information received from the VLP. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21)
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22. A 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 including specific identifier information and positioning capability information of the UE from the UE in order to determine the location of the UE, receiving a message including positioning capability information of a visiting location platform (VLP) from the VLP, and receiving auxiliary location information from the UE; a transmitter for transmitting a request message requesting positioning capability information of the VLP to the VLP; and a controller for determining the VLP of an area in which the UE is located based on the location request message, comparing positioning capability information of the server with positioning capability information of the VLP and determining one of the VLP and the server having a better positioning capability than the other as a location platform (LP), when the server is determined as the LP, exchanging auxiliary location information with the UE without additional communication with the VLP, and calculating the location of the UE using the exchanged auxiliary information.
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Specification