Method and arrangement for locating a mobile station
First Claim
1. A method for locating a mobile station by means of radio signals between the mobile station and a mobile station network, characterized in that two separate location channels are formed between the mobile station and the mobile station network in addition to other channels, to which location channel radio communications only related to location determination of the mobile station is concentrated;
- and wherein the method for locating the mobile station comprises using less than three base stations within the mobile station network.
6 Assignments
0 Petitions
Accused Products
Abstract
The invention relates to a method for locating a mobile station (5) my means of radio signals between the mobile station (5) and the mobile station network (1a, 2a, 3a, 4a) by forming separate location channels in addition to the communication channels. The location channels are, among others, the location access channel and the location receipt channel. The access channel is used to send a burst, which includes the identification of the mobile station (5), such as the International Mobile Subscriber Identification (IMSI). The location channels can be used in the locating methods based on the angle of arrival, time difference and transition time of the radio transmission, for example.
90 Citations
21 Claims
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1. A method for locating a mobile station by means of radio signals between the mobile station and a mobile station network, characterized in that two separate location channels are formed between the mobile station and the mobile station network in addition to other channels, to which location channel radio communications only related to location determination of the mobile station is concentrated;
- and wherein the method for locating the mobile station comprises using less than three base stations within the mobile station network.
- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A mobile station, which comprises:
- a locating device for locating the mobile station by means of radio signals between the mobile station (5) and a mobile station network, characterized in that the locating device comprises;
a processor (21) for performing locating routines, a memory (22) for saving the locating routines and measurement results, and a transmitter (25) for transmitting a first burst; and
that said mobile station is arranged to use a first localization channel for requesting location, and a second localization channel for acknowledging location, said first and second localization channels being arranged between the mobile station and mobile station network in addition to other channels, to which location channel radio communications only related to location determination of the mobile station is concentrated. - View Dependent Claims (11, 12)
- a locating device for locating the mobile station by means of radio signals between the mobile station (5) and a mobile station network, characterized in that the locating device comprises;
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13. A base station for locating a mobile station (5) by means of radio signals between the mobile station (5) and a mobile station network, characterized in that it comprises
a processor (27) for performing locating routines, a memory (28) for saving the locating routines and measurement results, a clock (29) for determining time of arrival of a first burst, an antenna (30) for transforming the first burst into an electric signal, and a receiver (31) for receiving the first burst from the antenna, and that said mobile station is arranged to use a first localization channel for requesting location, and a second localization channel for acknowledging location, said first and second localization channels being arranged between the mobile station and mobile station network in addition to other channels, to which location channel radio communications only related to location determination of the mobile station is concentrated.
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16. An arrangement for locating a mobile station (5) by means of radio signals between a mobile station (5) and the mobile station network, characterized in that it consists of the mobile station (5), which comprises
a processor (21) for performing locating routines, a memory (22) for saving the locating routines and measurement results, a transmitter (25) for transmitting a first burst; -
and of at least two or three base stations depending on the locating method, which comprise a processor (27) for performing locating routines, a memory (28) for saving the locating routines and measurement results, a clock (29) for determining time of arrival of the first burst, an antenna (30) for transforming the first burst into an electric signal, and a receiver (31) for receiving the first burst from the antenna; and
that said mobile station is arranged to use a first localization channel for requesting location, and a second localization channel for acknowledging location, said first and second localization channels being arranged between the mobile station and mobile station network in addition to other channels, to which location channel radio communications only related to location determination of the mobile station is concentrated. - View Dependent Claims (17, 18)
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19. A location service centre for locating a mobile station (5) by means of radio signals between the mobile station (5) and a mobile station network, characterized in that it comprises
a processor, a memory, a receiver, and a transmitter, wherein the processor is arranged for performing locating routines, which include at least determining location of the mobile station by means of burst measurement results received from base stations, the memory is arranged for saving the locating routines and measurement results, the receiver is arranged for receiving the measurement results from the base stations in a signalling channel, and the transmitter is arranged for sending commands to the base stations in the signaling channel, and locating functions are performed in a way that at least one additional channel only for location information is formed, in addition to radio channels used in ordinary communication.
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20. A method for locating a mobile station by means of radio signals between the mobile station and a mobile station network, the method comprising the steps of:
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forming at least one additional channel between the mobile station and the mobile station network in addition to radio channels used in ordinary communications between the mobile station land the mobile station network;
concentrating only location information into the at least one additional channel; and
transferring the concentrated location information between the mobile station and the mobile station network.
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21. A method for locating a mobile station by means of radio signals between a mobile station and a mobile station network, the method comprising the steps of:
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forming two additional channels between the mobile station and the mobile station network, in addition to radio channels used in ordinary communications between the mobile station and the mobile station network, wherein the two additional channels comprise;
a first channel; and
a second channel;
transferring only location information concentrated in the first channel from the mobile station to the mobile station network; and
transferring only location information concentrated in the second channel from the mobile station network to the mobile station, wherein the second channel further comprise a location receipt channel.
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Specification