Wideband ranging in cellular using unlicensed radio frequency spectrum band
First Claim
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1. A method for wireless communications, comprising:
- transmitting a signal over a licensed radio frequency spectrum band having a first bandwidth, the signal triggering performance of a ranging procedure over an unlicensed radio frequency spectrum band having a second bandwidth that is greater than the first bandwidth, wherein the signal includes information for performing the ranging procedure, the information including an indication that a transmitting device is capable of performing the ranging procedure over the unlicensed radio frequency spectrum band, a schedule for the ranging procedure over the unlicensed radio frequency spectrum band, an indication of a time to begin ranging measurements after the transmitted signal is received by a receiving device, and bandwidth, center frequency, and a pre-set time slot for performing the ranging procedure.
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Abstract
Methods, systems, and devices are described for utilization of an unlicensed radio frequency spectrum band for performing a ranging procedure. Performance of the ranging procedure may be triggered by a signal transmitted in a licensed radio frequency spectrum band. While conventional ranging in Long Term Evolution (LTE) communications, for example, using the licensed radio frequency spectrum band may be limited to a 10 MHz bandwidth, using the unlicensed radio frequency spectrum band for ranging may allow use of a wider bandwidth, such as 100 MHz or greater. Use of the wider bandwidth may result in more accurate ranging measurements (e.g., time-of-arrival estimation).
13 Citations
27 Claims
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1. A method for wireless communications, comprising:
transmitting a signal over a licensed radio frequency spectrum band having a first bandwidth, the signal triggering performance of a ranging procedure over an unlicensed radio frequency spectrum band having a second bandwidth that is greater than the first bandwidth, wherein the signal includes information for performing the ranging procedure, the information including an indication that a transmitting device is capable of performing the ranging procedure over the unlicensed radio frequency spectrum band, a schedule for the ranging procedure over the unlicensed radio frequency spectrum band, an indication of a time to begin ranging measurements after the transmitted signal is received by a receiving device, and bandwidth, center frequency, and a pre-set time slot for performing the ranging procedure. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. An apparatus for wireless communication, comprising:
a transmitter to transmit a signal over a licensed radio frequency spectrum band having a first bandwidth, the signal being configured to trigger performance of a ranging procedure over an unlicensed radio frequency spectrum band having a second bandwidth that is greater than the first bandwidth, wherein the signal includes information for performing the ranging procedure, the information including an indication that a transmitting device is capable of performing the ranging procedure over the unlicensed radio frequency spectrum band, a schedule for the ranging procedure over the unlicensed radio frequency spectrum band, an indication of a time to begin ranging measurements after the transmitted signal is received by a receiving device, and bandwidth, center frequency, and a pre-set time slot for performing the ranging procedure. - View Dependent Claims (19, 20, 21)
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22. A method for wireless communications, comprising:
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receiving a signal over a licensed radio frequency spectrum band having a first bandwidth; and performing a ranging procedure over an unlicensed radio frequency spectrum band having a second bandwidth based at least in part on the received signal, wherein the second bandwidth is greater than the first bandwidth, and wherein the received signal includes information for performing the ranging procedure, the information including an indication that a transmitting device is capable of performing the ranging procedure over the unlicensed radio frequency spectrum band, a schedule for the ranging procedure over the unlicensed radio frequency spectrum band, an indication of a time to begin ranging measurements after the transmitted signal is received by a receiving device, and bandwidth, center frequency, and a pre-set time slot for performing the ranging procedure. - View Dependent Claims (23, 24, 25, 26, 27)
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Specification