Positioning support device and positioning support method
First Claim
1. A positioning support system comprising:
- a processor includingan approximate positional information storage unit that stores approximate positional information is used to calculate a position of a communication terminal, the approximate positional information indicating a position of a cell where the communication terminal is located and including information identifying the cell associated with, the approximate positional information;
an approximate positional information transmitting unit to acquire, based on a positioning information transmission request including the information identifying the cell and which is transmitted from the communication terminal, the approximate positional information associated with the information identifying the cell from the approximate positional information storage unit, the approximate positional information transmitting unit transmitting the approximate positional information to the communication terminal;
a positioning result receiving unit to receive positioning result information transmitted from the communication terminal indicating a result of the positioning calculation; and
an approximate positional information updating unit to update the approximate positional information stored in the approximate positional information storage unit based on the positioning result informationwherein the cell corresponds to a network different from a network that includes the positioning support system, and the approximate positional information stored in the approximate positional information storage unit was previously determined in a previous positioning determination of the cell.
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Accused Products
Abstract
Highly-accurate approximate positional information is transmitted to a communication terminal. An approximate positional information database of a server included in a positioning support system includes approximate positional information used for positioning calculation at the communication terminal and which indicates a position of a cell in which the communication terminal is located and a cell identifier identifying the cell, with approximate positional information and the cell being associated with each other. Based on a positioning information transmission request which includes a cell and which is transmitted from the communication terminal, approximate positional information stored in the approximate positional information database is acquired and transmitted from a communication unit to the communication terminal. Positioning result information indicating a result of the positioning calculation transmitted from the communication terminal is received and, based on this information, approximate positional information stored in the approximate positional information database is updated by a control unit. The accuracy of approximate positional information is enhanced due to the approximate positional information stored in the approximate positional information database being updated based on positioning result information.
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Citations
8 Claims
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1. A positioning support system comprising:
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a processor including an approximate positional information storage unit that stores approximate positional information is used to calculate a position of a communication terminal, the approximate positional information indicating a position of a cell where the communication terminal is located and including information identifying the cell associated with, the approximate positional information; an approximate positional information transmitting unit to acquire, based on a positioning information transmission request including the information identifying the cell and which is transmitted from the communication terminal, the approximate positional information associated with the information identifying the cell from the approximate positional information storage unit, the approximate positional information transmitting unit transmitting the approximate positional information to the communication terminal; a positioning result receiving unit to receive positioning result information transmitted from the communication terminal indicating a result of the positioning calculation; and an approximate positional information updating unit to update the approximate positional information stored in the approximate positional information storage unit based on the positioning result information wherein the cell corresponds to a network different from a network that includes the positioning support system, and the approximate positional information stored in the approximate positional information storage unit was previously determined in a previous positioning determination of the cell. - View Dependent Claims (2, 3, 4, 5, 6, 8)
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7. A positioning support method employed by a positioning support device including approximate positional information storage unit to store approximate positional information used for positioning calculation of a communication terminal and which indicates a position of a cell where the communication terminal is located and information identifying the cell associated with the approximate positional information, the positioning support method comprising:
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acquiring, in a processor, the approximate positional information stored in the approximate positional information storage unit in association with information identifying the cell where the communication terminal is located; transmitting, under control of the processor, the approximate positional information via an approximate positional information transmitting unit to the communication terminal based on a positioning information transmission request from the communication terminal which includes information identifying the cell; receiving, at the processor, positioning result information transmitted from the communication terminal and which indicates a result of the positioning calculation; and updating, under control of the processor, the approximate positional information stored in the approximate positional information storage unit by approximate positional information updating unit based on the positioning result information.
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Specification