METHOD AND DEVICE FOR APPLYING OPTIMIZED PHASE ROTATION IN WLAN ENVIRONMENT INCLUDING WIRELESS DEVICES HAVING MUTUALLY DIFFERENT MAXIMUM TRANSMITTABLE RF BANDWIDTHS

• Main Authors: CHOI JIN-SOO, PARK EUN-SUNG, LIM DONG-GUK
• Format: Patent
• Language: Chinese; English
• Published: 13.04.2021
• Subjects: ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION

Proposed are a method and device for transmitting an EHT PPDU in a wireless LAN system. Specifically, a transmission device generates an EHT PPDU and transmits the EHT PPDU to a receiving device through a 320 MHz RF band. A legacy preamble includes an L-STF and an L-LTF. The legacy preamble is generated by applying a first phase rotation value. The first phase rotation value is determined on the basis of a first technique and a second technique. The first technique acquires an optimal PAPR in the L-STF and the L-LTF. The second technique acquires an optimal PAPR on the basis of the maximum transmission bandwidth supported by the RF. The first phase rotation value is acquired on the basis of a second phase rotation value and a third phase rotation value. The second phase rotation value is obtained by repeating a phase rotation value defined for an 80 MHz band in an 802.11ax system. The third phase rotation value is defined in 80 MHz band units in a 320 MHz band. 提出了一种在无线LAN系统中发送EHT PPDU的方法和装置。具体地，发送装置生成EHT PPD