Method and arrangement for locating a mobile station in a packet-switched network and a mobile station utilizing said method
First Claim
1. A locating method of a mobile station of a packet-switched cellular network, where first the geographical location of the mobile station is defined by location measurements performed at the mobile station, during which measurements the mobile station that is operated in a packet-switched connection is made to operate in a circuit-switched connection, whereafter the map data related to the defined location is transmitted from a map server that is in connection with the cellular network to the mobile station.
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Abstract
The invention relates to a method and arrangement whereby the location of a mobile station (MS, 101) operated in a packet-switched (GPRS) connection can be defined. For the duration of the location measurements, the GPRS mobile station is switched to a circuit-switched connection in the cellular network (11). The invention also comprises the transmission of the accurate map data related to the mobile station as WAP pages to the mobile station for display.
69 Citations
22 Claims
- 1. A locating method of a mobile station of a packet-switched cellular network, where first the geographical location of the mobile station is defined by location measurements performed at the mobile station, during which measurements the mobile station that is operated in a packet-switched connection is made to operate in a circuit-switched connection, whereafter the map data related to the defined location is transmitted from a map server that is in connection with the cellular network to the mobile station.
- 12. A cellular radio system comprising a cellular network together with its parts, as well as wireless mobile stations, in which cellular radio system the mobile stations are arranged to operate either in packet-switched data transmission or in circuit-switched data transmission, and which mobile stations are also provided with a device for performing at the mobile station location measurements of the mobile station, which location measurements are arranged to be carried out in a circuit-switched data transmission connection, and a device for displaying the map related to the coordinates calculated in the location measurements.
- 17. A cellular radio system mobile station that is provided a device for switching to both a packet-switched data transmission network and to a circuit-switched data transmission network, and with a device for performing at the mobile station location measurements in order to define the geographical location of the mobile station, and a device for changing the data transmission connection from a packet-switched connection to a circuit-switched connection for the duration of the location measurements forming part of the location definition.
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22. A cellular radio system mobile station that is provided with a device for switching to both a packet-switched data transmission network and to a circuit-switched data transmission network, and with a device for performing at the mobile station location measurements in order to define the geographical location of the mobile station, and it is also provided with a device for changing the data transmission connection from a packet-switched connection to a circuit-switched connection for the duration of the location measurements forming part of the location definition, wherein the device for defining the geographical location of the mobile station comprises:
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a device for sending the location request in WAP form to a map server, a device for receiving the locating command from a GMLC server, a device for performing the location measurements, and a device for sending the results of the location measurements to the GMLC sever.
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Specification