Method and apparatus for applying phase rotation in units of 10 mhz bands in wireless lan system
AssigneeLG Electronics Inc.
InventorsEunsung PARK, Jinyoung CHUN, Jinsoo CHOI, Dongguk LIM
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Abstract
Proposed are a method and an apparatus for receiving a PPDU in a wireless LAN system. Specifically, a reception STA receives a PPDU from a transmission STA through a broadband and decodes the PPDU. The PPDU includes a legacy preamble, and a first and a second signal field. The legacy preamble and the first and the second signal field are generated on the basis of a first phase rotation value. When a first band is a 40 MHz band, the first phase rotation value is [1, −1, −1, −1]. Each element of the first phase rotation value is applied for each 10 MHz band in the first band.
Claims18
A method in a wireless local area network (WLAN) system, the method comprising:
- receiving, by a receiving station (STA), a Physical Protocol Data Unit (PPDU) from a transmitting STA through a first band;
- and
- decoding, by the receiving STA, the PPDU,
- wherein the PPDU includes a legacy preamble, first and second signal fields,
- wherein the legacy preamble and the first and second signal fields are generated based on a first phase rotation value,
- wherein when the first band is a 40 MHz band, the first phase rotation value is [1 −1 −1 −1], and
- wherein each element of the first phase rotation value is applied to each 10 MHz band in the first band.
A receiving station (STA) in a wireless local area network (WLAN) system, the receiving STA comprising:
- a memory;
- a transceiver;
- and
- a processor being operatively connected to the memory and the transceiver,
- wherein the processor is configured to:
- receive a Physical Protocol Data Unit (PPDU) from a transmitting station (STA) through a first band, and
- decode the PPDU,
- wherein the PPDU includes a legacy preamble, first and second signal fields,
- wherein the legacy preamble and the first and second signal fields are generated based on a first phase rotation value,
- wherein when the first band is a 40 MHz band, the first phase rotation value is [1 −1 −1 −1], and
- wherein each element of the first phase rotation value is applied to each 10 MHz band in the first band.
A method in a wireless local area network (WLAN) system, the method comprising:
- generating, by a transmitting station (STA), a Physical Protocol Data Unit (PPDU);
- and
- transmitting, by the transmitting STA, the PPDU to a receiving STA through a first band,
- wherein the PPDU includes a legacy preamble, first and second signal fields,
- wherein the legacy preamble and the first and second signal fields are generated based on a first phase rotation value,
- wherein when the first band is a 40 MHz band, the first phase rotation value is [1 −1 −1 −1], and
- wherein each element of the first phase rotation value is applied to each 10 MHz band in the first band.
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Dependencies are inferred from the claim text.