US Patent No. 10,651,992

WIRELESS COMMUNICATION METHOD AND WIRELESS COMMUNICATION TERMINAL FOR COEXISTENCE WITH LEGACY WIRELESS COMMUNICATION TERMINAL


Patent No. 10,651,992
Issue Date May 12, 2020
Title Wireless Communication Method And Wireless Communication Terminal For Coexistence With Legacy Wireless Communication Terminal
Inventorship Geonjung Ko, Gyeonggi-do (KR)
Jinsam Kwak, Gyeonggi-do (KR)
Juhyung Son, Gyeonggi-do (KR)
Assignee WILUS INSTITUTE OF STANDARDS AND TECHNOLOGY INC., Gyeonggi-Do (KR) SK TELE...

Claim of US Patent No. 10,651,992

1. A wireless communication terminal that communicates wirelessly, the terminal comprising:a transceiver; and
a processor,
wherein the processor is configured to receive a non-legacy physical layer frame by using the transceiver,
obtain a legacy signaling field including information decodable by a legacy wireless communication terminal from the non-legacy physical layer frame,
obtain length information indicating information on a duration of the non-legacy physical layer frame, from the legacy signaling field,
obtain information other than information on the duration of the non-legacy physical layer frame based on a modulation method of a third symbol after the legacy signaling field and a remaining value obtained by dividing the length information by a data size transmittable by a symbol of a legacy physical layer frame, wherein the information other than information on the duration of the non-legacy physical layer frame indicates a format of a non-legacy signaling field included in the non-legacy physical layer frame, and
determine the number of symbols of data of the non-legacy physical layer frame according to a following equation,

where ?x? denotes a largest integer less than or equal to x,
L_LENGTH denotes the length information,
m denotes a value obtained by subtracting the remaining value from the data size transmittable by a symbol of the legacy physical layer frame,
Dsize denotes the data size transmittable by a symbol of the legacy physical layer frame,
bPE_Disambiguity denotes a value of PE Disambiguity field,
THE_PREAMBLE denotes a duration of non-legacy preamble of the non-legacy physical layer frame,
TSYM denotes a duration of a symbol of the data of the non-legacy physical layer frame,
wherein the PE Disambiguity field is set based on the duration of a symbol of the data of the non-legacy physical layer frame and an increment of duration to set a value of the length information based on a duration of a symbol of the legacy physical layer frame.