Location system
First Claim
1. A location service system for locating a target mobile terminal, comprising:
- a client terminal which transmits a location request of the target mobile terminal, and requested accuracy and requested allowable age;
a positioning system which produces location information of the target mobile terminal; and
a gateway which transmits the location request to said positioning system and stores previously obtained location information of the target mobile terminal and a privacy profile of the target mobile terminal,wherein the gateway performs a first privacy check for verifying the location request by referring to the privacy profile of the target mobile terminal, performs a reusability check to determine if the stored, previously obtained, location information satisfies the requested accuracy and the requested allowable age, and if the reusability check is affirmative, then performs a second privacy check on the stored, previously obtained, location information by referring to information specified in the location request based on the privacy profile of the target mobile terminal, without transmitting the verified location request to the positioning system, in order to decide whether said gateway can transmit the stored, previously obtained, location information to the client terminal.
1 Assignment
0 Petitions
Accused Products
Abstract
A location system comprises a communication terminal for transmitting a location request specifying a target mobile terminal and a type of location information, and a location network. In response to the location request, the location network produces current location information of the target mobile terminal if the type of location information of the received request specifies current location information and transmits the current location information to the communication terminal and stores the last known location information in a memory as last known location information of the target mobile terminal. If the type of location information specifies last known location information, stored last known location information of the target mobile terminal is copied from the memory and transmitted to the communication terminal if the location request is verified by a privacy check and if the stored information is reusable.
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Citations
10 Claims
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1. A location service system for locating a target mobile terminal, comprising:
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a client terminal which transmits a location request of the target mobile terminal, and requested accuracy and requested allowable age; a positioning system which produces location information of the target mobile terminal; and a gateway which transmits the location request to said positioning system and stores previously obtained location information of the target mobile terminal and a privacy profile of the target mobile terminal, wherein the gateway performs a first privacy check for verifying the location request by referring to the privacy profile of the target mobile terminal, performs a reusability check to determine if the stored, previously obtained, location information satisfies the requested accuracy and the requested allowable age, and if the reusability check is affirmative, then performs a second privacy check on the stored, previously obtained, location information by referring to information specified in the location request based on the privacy profile of the target mobile terminal, without transmitting the verified location request to the positioning system, in order to decide whether said gateway can transmit the stored, previously obtained, location information to the client terminal. - View Dependent Claims (2, 3)
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4. A location method of a location service system for locating a target mobile terminal, wherein a positioning system for producing location information of the target mobile terminal in response to a request from a gateway is provided, the method comprising:
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transmitting, at a client terminal, a location request of the target mobile terminal, requested accuracy and requested allowable age; performing, at the gateway which stores previously obtained location information of the target mobile terminal and a privacy profile of the target mobile terminal, a first privacy check for verifying the location request from the client terminal by referring to the privacy profile of the target mobile terminal; performing, at the gateway, a reusability check to determine if the stored, previously obtained, location information satisfies the requested accuracy and the requested allowable age; and performing, at the gateway, a second privacy check on said stored, previously obtained, location information by referring to information specified in the verified location request in order to decide whether the gateway can transmit the stored, previously obtained, location information to the client terminal without transmitting the verified location request to the positioning system if said reusability check is affirmative. - View Dependent Claims (5, 6)
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7. A gateway of a location service system, wherein a positioning system for producing location information of a target mobile terminal is provided for locating the target mobile terminal, the gateway comprising:
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storage means for storing previously obtained location information of the target mobile terminal from the positioning system and a privacy profile of the target mobile terminal; first privacy check means for verifying a location request of the target mobile terminal, requested accuracy, and requested allowable age from a client terminal by referring to the privacy profile of the target mobile terminal stored in the storage means; reusability check means for determining if the stored, previously obtained, location information stored in the storage means satisfies the requested accuracy and the requested allowable age; and second privacy check means for performing a second privacy check, if the reusability check is affirmative, on said stored, previously obtained, location information stored in the storage means, without transmitting the verified location request to the positioning system, in order to decide whether the stored, previously obtained, location information stored in the storage means can be transmitted to the client terminal. - View Dependent Claims (8, 9)
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10. A gateway of a location service system, wherein a positioning system for producing location information of a target mobile terminal is provided for locating the target mobile terminal, the gateway comprising:
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a storage unit that stores previously obtained location information of the target mobile terminal from the positioning system and a privacy profile of the target mobile terminal; a first privacy check unit that verifies a location request of the target mobile terminal, requested accuracy, and requested allowable age from a client terminal by referring to the privacy profile of the target mobile terminal stored in the storage unit; a reusability check unit that determines if the stored, previously obtained, location information stored in the storage means satisfies the requested accuracy and the requested allowable age; and a second privacy check unit that performs a second privacy check, if the reusability check is affirmative, on said stored, previously obtained, location information stored in the storage unit, without transmitting the verified location request to the positioning system, in order to decide whether the stored, previously obtained, location information stored in the storage unit can be transmitted to the client terminal.
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Specification