Cell phone position measurement system, position measurement method, and cell phone terminal

1. A cell phone position measurement system characterized by comprising:

position measurement means for performing position measurement using a satellite; and

a cell phone terminal which notifies said position measurement means of a signal received from the satellite and receives a position information service,

wherein said cell phone terminal comprises

a receiving unit which receives the signal from the satellite,

a radio phone unit which notifies said position measurement means via a radio channel and a cell phone network of position measurement data obtained from the signal received by said receiving unit, and

a controller which controls said radio phone unit and temporarily interrupts communication via the radio channel in position measurement through said receiving unit, wherein said position measurement system further comprises an analyzer which performs lower layer data transmission between a plurality of base stations constituting the cell phone network, and analyzes radio signal arrival time, and

said controller notifies said position measurement system by channel disconnection message communication of position measurement data obtained by said receiving unit when a radio channel communication state at the start of position measurement is a channel-disconnected state, and notifies said position measurement system by channel connection data communication of position measurement data obtained from an analysis result of said analyzer when the radio channel communication state is a voice/data communication state.

2. A cell phone terminal characterized by comprising:

a receiving unit which receives a signal for position measurement from a satellite;

a radio phone unit which notifies a position measurement system via a radio channel and a cell phone network of position measurement data obtained from the signal received by said receiving unit; and

a controller which controls said radio phone unit and temporarily interrupts communication in position measurement through said receiving unit, wherein said cell phone terminal further comprises an analyzer which performs lower layer data transmission between a plurality of base stations constituting the cell phone network, and analyzes radio signal arrival time, and

said controller notifies the position measurement system by channel disconnection message communication of position measurement data obtained by said receiving unit when a radio channel communication state at the start of position measurement is a channel-disconnected state, and notifies the position measurement system by channel connection data communication of position measurement data obtained from an analysis result of said analyzer when the radio channel communication state is a voice/data communication state.

3. A position measurement method characterized by comprising the steps of:

receiving a signal from a satellite by a cell phone terminal;

notifying a position measurement system via a radio channel and a cell phone network of position measurement data obtained from the received signal; and

temporarily interrupting communication via the radio channel from the cell phone terminal upon reception of the receiving signal, wherein the position measurement method further comprises the step of performing lower layer data transmission between a plurality of base stations constituting the cell phone network, and analyzing radio signal arrival time, and

the interruption step comprises the step of notifying the position measurement system by channel disconnection message communication of position measurement data when a radio channel communication state at the start of position measurement is a channel-disconnected state, and notifying the position measurement system by channel connection data communication of position measurement data obtained from an analysis result of the radio signal arrival time when the radio channel communication state is a voice/data communication state.