CPC H04L 63/0428 (2013.01) [G01S 13/762 (2013.01); G01S 13/765 (2013.01); G01S 13/825 (2013.01); H04L 9/3226 (2013.01); H04W 12/02 (2013.01); H04W 12/06 (2013.01); H04W 12/10 (2013.01); H04L 9/50 (2022.05); H04L 2209/80 (2013.01)] | 20 Claims |
1. A device for a responding STA (RSTA), the device comprising processing circuitry coupled to storage, the processing circuitry configured to:
select a first long training field (LTF) key during a current measurement of a ranging measurement exchange, wherein the first LTF key is based on a last transmitted location measurement report (LMR) frame;
identify an uplink (UL) null data packet (NDP) frame received from an initiating STA (ISTA), wherein the UL NDP comprises a first LTF sequence derived from the first LTF key;
generate a downlink (DL) NDP frame comprising a second LTF sequence, wherein the second LTF sequence is derived from the first LTF key;
generate a current LMR frame comprising a secure LTF indication, wherein the secure LTF indication is used for LTF sequence generation;
encode the current LMR frame using a protected frame format; and
cause to send the encrypted current LMR frame to the ISTA.
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