CPC G01S 11/08 (2013.01) [G01S 5/0036 (2013.01); G01S 5/0284 (2013.01); G01S 5/0289 (2013.01); H04B 7/18506 (2013.01); H04L 5/143 (2013.01)] | 26 Claims |
1. A method for estimating position information in a distributed radio frequency (RF) communications system, the method comprising:
receiving a first RF receive signal comprising a data payload having at least one frame, wherein the data payload indicates a transmit time stamp of the first RF receive signal and a frame length of the at least one frame and a first positioning sequence from a first network node at a second network node;
estimating a first time of arrival (ToA) of the first positioning sequence at the second network node;
estimating relative positional information of the second network node from the first network node based on the first ToA, the frame length of the at least one frame, a perceived frame length of the at least one frame, the transmit time stamp of the RF receive signal, and a perceived time stamp of the RF receive signal; and
transmitting a first RF transmit signal comprising the estimated first ToA.
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