CPC H04B 7/2634 (2013.01) [H04B 7/2637 (2013.01); H04W 16/16 (2013.01); H04W 64/003 (2013.01)] | 30 Claims |
1. A method at a user equipment (UE) for determining a distance from the UE to a base station, comprising:
transmitting a first positioning reference signaling (PRS) signal to the base station at a first time, wherein the first PRS signal is received by the base station at a second time, and wherein the first time corresponds to the start of a first subframe of a cellular radio access technology (RAT) utilizing unlicensed radio frequency spectrum;
receiving a second PRS signal from the base station at a third time, wherein the second PRS signal is transmitted by the base station at a fourth time, and wherein the fourth time corresponds to the start of a second subframe of the cellular RAT; and
enabling the distance to be determined based on the first time, the second time, the third time, and the fourth time.
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