Mobile station location determination using radio signal timing values
AssigneeEricsson Inc.
InventorBagher Rouhollah Zadeh
Life of this patent
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Abstract
A method for collecting radio signal timing values for use in determining the location of a mobile station in a wireless network. The method includes acquiring a radio signal timing value from the mobile station's serving base transceiver station. A first handover of the mobile station is initiated from the serving base transceiver station to a second base transceiver station. A radio signal timing value is determined as part of the handover procedure. After the first handover is completed, a second handover of the mobile station is initiated from the second base transceiver station to a third base transceiver station, wherein a third timing value is determined as part of the handover procedure. The second handover is also completed.
Claims12
In a wireless network having a plurality of base transceiver stations for transmitting and receiving radio signals to and from a mobile station which is communicating with a serving base station and may be handed over to another base station, a method of deriving time values for the mobile station with respect to a plurality of base stations, which comprises the sequential steps of:
- acquiring a timing value from said serving base transceiver station;
- initiating a first handover of said mobile station from said serving base transceiver station to a first of said plurality of base transceiver stations;
- acquiring a second timing value from said first of said plurality of base transceiver stations;
- completing said first handover;
- initiating a second handover of said mobile station from said first of said plurality of base transceiver stations to said serving base transceiver station;
- completing said second handover;
- initiating a third handover of said mobile station from said serving base transceiver station to a second of said plurality of base transceiver stations;
- acquiring a third timing value from said second of said plurality of base transceiver stations;
- and
- completing said third handover.
Dependencies are inferred from the claim text.