Wireless device location services
First Claim
1. A wireless communication system comprising:
- a location determining node comprising;
a network interface configured to transmit a request, to an evolved Node B (eNB), to order a user equipment (UE) to transmit sounding reference signals (SRS);
the eNB comprising;
a network interface configured to receive the request from the location determining node;
a processor configured to generate an up link (UL) SRS resource allocation for the UE; and
a transmitter configured to transmit an indication of the UL SRS resource allocation to the UE;
at least three location measurement units (LMUs), each LMU comprising;
a receiver configured to receive, from the UE, an UL SRS;
a processor configured to generate locating information based on the received UL SRS; and
a network interface configured to transmit the locating information to the location determining node,wherein the location determining node further comprises a processor configured to determine a position of the UE based at least on the locating information generated by each of the at least three LMUs.
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Accused Products
Abstract
A system for determining location information for a wireless device is described. The system includes a UE, a LE and multiple LMUs. The LE sends, to the LMUs, reception instructions with characteristics of the signal transmission from the UE and each LMU receives, from the LE, the reception instructions. The UE sends a signal transmission. Each LMU receives the transmitted signal from the UE, determines locating information based at least in part of the received signal and sends the locating information to the LE. The LE receives the locating information regarding the transmitted signal and determines a location of the UE based at least in part on the received locating information. Methods, apparatus and computer readable media are also described.
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Citations
18 Claims
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1. A wireless communication system comprising:
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a location determining node comprising; a network interface configured to transmit a request, to an evolved Node B (eNB), to order a user equipment (UE) to transmit sounding reference signals (SRS); the eNB comprising; a network interface configured to receive the request from the location determining node; a processor configured to generate an up link (UL) SRS resource allocation for the UE; and a transmitter configured to transmit an indication of the UL SRS resource allocation to the UE; at least three location measurement units (LMUs), each LMU comprising; a receiver configured to receive, from the UE, an UL SRS; a processor configured to generate locating information based on the received UL SRS; and a network interface configured to transmit the locating information to the location determining node, wherein the location determining node further comprises a processor configured to determine a position of the UE based at least on the locating information generated by each of the at least three LMUs. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method for use in a wireless communication system, the method comprising:
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a location determining node transmitting a request, to an evolved Node B (eNB), to order a user equipment (UE) to transmit sounding reference signals (SRS); the eNB receiving the request from the location determining node; the eNB generating an up link (UL) SRS resource allocation for the UE; and the eNB transmitting an indication of the UL SRS resource allocation to the UE; each of at least three location measurement units (LMUs) receiving, from the UE, an UL SRS; each of the at least three LMUs generating locating information based on the received UL SRS; each of the at least three LMUs transmitting the locating information to the location determining node; and the location determining node determining a position of the UE based at least on the locating information generated by each of the at least three LMUs. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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Specification