Positioning system and positioning method in mobile communication network

A positioning system in a mobile communication network that provides position information for a positioning target in response to a positioning request from an external client device, the positioning system in the mobile communication network comprising:

• at least one node device including a positioning response generation function unit which generates a response with the position information to said external client device based on request freshness information that specifies a requested freshness and request freshness request class information that designates a class of treatment when the requested freshness is not available, in which a first class of treatment specifies that an error is to be sent and a second class of treatment specifies that best available position information is to be sent.

A positioning system in a mobile communication network that provides position information for a positioning target in response to a positioning request from an external client device, the positioning system in the mobile communication network comprising:

• at least one node device including a positioning response generation function unit which generates a response with the position information to said external client device based on request accuracy information that specifies a requested accuracy and request accuracy request class information that designates a class of treatment when the requested accuracy is not available, in which a first class of treatment specifies that an error is to be sent and a second class of treatment specifies that best available position information is to be sent, and request freshness information that specifies a requested freshness and request freshness request class information that designates a class of treatment when the requested freshness is not available, in which a third class of treatment specifies that an error is to be sent and a fourth class of treatment specifies that best available position information is to be sent.

A positioning method in a mobile communication network that provides position information for a positioning target in response to a positioning request from an external client device, wherein the response of the position information to said external client device is generated based on request accuracy information that specifies a requested accuracy and request accuracy request class information that designates a class of treatment when the requested accuracy is not available, in which a first class of treatment specifies that an error is to be sent and a second class of treatment specifies that best available position information is to be sent.

A positioning method in a mobile communication network that provides position information for a positioning target in response to a positioning request from an external client device, wherein the response of the position information to said external client device is generated based on request freshness information that specifies a requested freshness and request freshness request class information that designates a class of treatment when the requested freshness is not available, in which a first class of treatment specifies that an error is to be sent and a second class of treatment specifies that best available position information is to be sent.

A positioning method in a mobile communication network that provides position information for a positioning target in response to a positioning request from an external client device, wherein the response of the position information to said external client device is generated based on request accuracy information that specifies a requested accuracy and request accuracy request class information that designates a class of treatment when the requested accuracy is not available, in which a first class of treatment specifies that an error is to be sent and a second class of treatment specifies that best available position information is to be sent, and request freshness information that specifies a requested freshness and request freshness request class information that designates a class of treatment when the requested freshness is not available, in which a third class of treatment specifies that an error is to be sent and a fourth class of treatment specifies that best available position information is to be sent.

A positioning server device in a mobile communication network that provides position information for a positioning target in response to a positioning request from an external client device, the positioning server device in the mobile communication network comprising:

• a positioning response generation function unit which generates a response with the position information to said external client device based on request accuracy information that specifies a requested accuracy and request accuracy request class information that designates a class of treatment when the requested accuracy is not available, in which a first class of treatment specifies that an error is to be sent and a second class of treatment specifies that best available position information is to be sent.

A positioning server device in a mobile communication network that provides position information for a positioning target in response to a positioning request from an external client device, the positioning server device in the mobile communication network comprising:

• a positioning response generation function unit which generates a response with the position information to said external client device based on request freshness information that specifies a requested freshness and request freshness request class information that designates a class of treatment when the requested freshness is not available, in which a first class of treatment specifies that an error is to be sent and a second class of treatment specifies that best available position information is to be sent.

A computer-readable data recording medium storing a program executed by a positioning server device in a mobile communication network that provides position information for a positioning target in response to a positioning request from an external client device, the program comprising:

• a positioning response generation process of generating the response of the position information to said external client device based on request accuracy information that specifies a requested accuracy and request accuracy request class information that designates a class of treatment when the requested accuracy is not available, in which a first class of treatment specifies that an error is to be sent and a second class of treatment specifies that best available position information is to be sent.

A computer-readable data recording medium storing a program executed by a positioning server device in a mobile communication network that provides position information for a positioning target in response to a positioning request from an external client device, the program comprising:

• a positioning response generation process of generating the response of the position information to said external client device based on request freshness information that specifies a requested freshness and request freshness request class information that designates a class of treatment when the requested freshness is not available, in which a first class of treatment specifies that an error is to be sent and a second class of treatment specifies that best available position information is to be sent.

A client device of a mobile communication system comprised of a mobile station and a server, the client device comprising:

• a transmission means which transmits a positioning request which requests position information of said mobile station;
• and
• a receiving means which receives one of the position information of said mobile station and error notification from said server in accordance with request positioning accuracy that specifies a requested accuracy and a positioning accuracy request level as a response to said positioning request, the positioning accuracy request level designating a level of treatment when the requested accuracy is not available, in which a first level of treatment specifies that an error is to be sent and a second level of treatment specifies that best available position information is to be sent.

A mobile communication system comprised of a server, a mobile station, a regional area network, and a management device which communicates with said regional area network,

• wherein said server receives a positioning request which requests position information of said mobile station, holds request positioning accuracy that specifies a requested accuracy and a positioning accuracy request level that designates a level of treatment when the requested accuracy is not available, in which a first level of treatment specifies that an error is to be sent and a second level of treatment specifies that best available position information is to be sent, and transmits one of said position information and error notification in accordance with said request positioning accuracy and said request level as a response to said positioning request, and
• wherein said server, said mobile station, said regional area network, and said management device cooperate to carry out positioning processing for obtaining said position information.