US 11,792,170 B2
Encryption of management frames for securing long training field sequence generation and scheme for transmitting sounding signal indications
Qinghua Li, San Ramon, CA (US); Jonathan Segev, Tel Mond (IL); Benny Abramovsky, Petah Tikva (IL); Danny Alexander, Neve Efraim Monoson (IL); Xiaogang Chen, Portland, OR (US); Chittabrata Ghosh, Fremont, CA (US); Feng Jiang, Santa Clara, CA (US); Ido Ouzieli, Tel Aviv (IL); and Robert Stacey, Portland, OR (US)
Assigned to Intel Corporation, Santa Clara, CA (US)
Filed by INTEL CORPORATION, Santa Clara, CA (US)
Filed on May 16, 2022, as Appl. No. 17/745,790.
Application 17/745,790 is a continuation of application No. 16/177,703, filed on Nov. 1, 2018, granted, now 11,336,626.
Claims priority of provisional application 62/592,273, filed on Nov. 29, 2017.
Claims priority of provisional application 62/580,307, filed on Nov. 1, 2017.
Prior Publication US 2022/0407844 A1, Dec. 22, 2022
Int. Cl. H04L 9/40 (2022.01); H04L 9/32 (2006.01); H04W 12/06 (2021.01); G01S 13/76 (2006.01); H04W 12/10 (2021.01); G01S 13/82 (2006.01); H04W 12/02 (2009.01); H04L 9/00 (2022.01)
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
OG exemplary drawing
 
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.