Patent ID: 11870623
Assignee: HUAWEI TECHNOLOGIES CO., LTD.
Field: Digital communication (Electrical engineering)
Classification: CPC H  Y | IPC H

Claim 5:
6. A wireless local area network data transmission method, comprising:
receiving, by a station, a physical layer protocol data unit (PPDU) of a wireless local area network from an access point, wherein the received PPDU comprises a Physical Layer Convergence Protocol (PLCP) header domain and a data domain, wherein the PLCP header domain comprises a preamble and a control domain, wherein the control domain carries identifier information of the access point, an identifier of at least one station and duration information, and wherein a duration indicated by the duration information in the PLCP header domain includes a transmission duration of one or more PPDUs subsequent to the received PPDU in an orthogonal frequency division multiple access (OFDMA) transmission opportunity (TXOP);
obtaining, by the station, the identifier information of the access point, the identifier of at least one station, and the duration information in the control domain of the received PPDU; and
setting, by the station, a network allocation vector (NAV) according to the duration information in the control domain of the PLCP header domain of the received PPDU, wherein the NAV is for protecting transmission of the one or more PPDUs subsequent to the received PPDU in the OFDMA TXOP;
wherein the data domain of the received PPDU is received via OFDMA technology, and wherein the data domain of the received PPDU carries a downlink medium access control protocol data unit (MPDU), and the MPDU comprises a medium access control (MAC) header domain, wherein the MAC header domain of the downlink MPDU carried in the data domain further comprises an OFDMA control field and a frame control field.