SYSTEMS AND METHODS FOR LOCATION DETERMINATION
First Claim
1. A system for determining the location of a mobile device, the system comprising:
- a distributed antenna system configured to relay signals to and from the mobile device, the distributed antenna system comprising;
a hub unit; and
a plurality of remote antenna units coupled to the hub unit, wherein signals relayed between the plurality of remote antenna units and the hub unit are delayed such that at least two signal paths between the plurality of remote antenna units and the hub unit have different delay times;
a base station coupled to the hub unit, wherein the base station receives the signals from the hub unit and determines the delay of signals transmitted between the mobile device and the base station; and
wherein the system is configured to determine the location of the mobile device by using the delay determined by the base station.
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Accused Products
Abstract
Embodiments described by the present disclosure provide improved systems and methods for determining the location of a mobile device. In one embodiment, a system comprises a distributed antenna system (DAS) configured to relay signals to and from the mobile device. Further, the DAS comprises a hub unit; and multiple remote antenna units coupled to the hub unit, wherein signals relayed between the remote antenna units and the hub unit are delayed such that different signal paths between the remote antenna units and the hub unit have different delay times. The system also comprises a base station coupled to the hub unit, wherein the base station receives the signals from the hub unit and determines the delay of signals transmitted between the mobile device and the base station, wherein the system determines the location of the mobile device by using the delay for RF pattern matching.
39 Citations
24 Claims
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1. A system for determining the location of a mobile device, the system comprising:
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a distributed antenna system configured to relay signals to and from the mobile device, the distributed antenna system comprising; a hub unit; and a plurality of remote antenna units coupled to the hub unit, wherein signals relayed between the plurality of remote antenna units and the hub unit are delayed such that at least two signal paths between the plurality of remote antenna units and the hub unit have different delay times; a base station coupled to the hub unit, wherein the base station receives the signals from the hub unit and determines the delay of signals transmitted between the mobile device and the base station; and wherein the system is configured to determine the location of the mobile device by using the delay determined by the base station. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A method for determining a location of a mobile device, the method comprising:
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relaying signals between a mobile device and a base station through a plurality of remote antenna units; delaying the signals relayed between the base station and different remote antenna units in the plurality of remote antenna units by different delay times; determining a delay of the signals relayed between the base station and the mobile device, wherein the signal is relayed through the plurality of remote antenna units; and determining the location of the mobile device based on the delay. - View Dependent Claims (18, 19)
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20. A distributed antenna system comprising:
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a hub unit; and a plurality of remote antenna units configured to communicate with at least one mobile device, wherein signals relayed between the plurality of remote antenna units and the hub unit along different transmission paths are delayed by different delay times, wherein the hub unit combines received signals from the plurality of remote antenna units, and transmits the combined signal to a base station system, wherein the base station system determines a delay time for the signals in the combined signal and a location unit determines the location of the at least one mobile device. - View Dependent Claims (21, 22, 23, 24)
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Specification