A wireless local area network communication method, comprising: receiving by a station a message frame sent by an access point wherein the station supports a UL OFDMA mechanism, wherein OFDMA is an orthogonal frequency division multiple access, wherein UL OFDMA is an uplink orthogonal frequency division multiple access, wherein the message frame contains an OFDMA random access contention period field, and the OFDMA random access contention period field indicates that the station can contend for an access channel within a contention period indicated by the OFDMA random access contention period field; and setting by the station a network allocation vector to be idle within the contention period indicated by the OFDMA random access contention period field, wherein the station has been allocated with a bandwidth resource, wherein the method further comprises: receiving by the station a resource message allocation frame sent by the access point, wherein the resource message allocation frame contains information of the bandwidth resource allocated by the access point to the station, wherein the message frame is a beacon frame, wherein the access point sends the resource allocation message frame to the station before the message frame is sent, and wherein a field is set in the beacon frame to indicate that Intended stations contend for accessing the channel within an OFDMA Back-Off, OBO, period specified within a contention-free period. receiving by a station a message frame sent by an access point wherein the station supports a UL OFDMA mechanism, wherein OFDMA is an orthogonal frequency division multiple access, wherein UL OFDMA is an uplink orthogonal frequency division multiple access, wherein the message frame contains an OFDMA random access contention period field, and the OFDMA random access contention period field indicates that the station can contend for an access channel within a contention period indicated by the OFDMA random access contention period field; and setting by the station a network allocation vector to be idle within the contention period indicated by the OFDMA random access contention period field, wherein the station has been allocated with a bandwidth resource, wherein the method further comprises: receiving by the station a resource message allocation frame sent by the access point, wherein the resource message allocation frame contains information of the bandwidth resource allocated by the access point to the station, wherein the message frame is a beacon frame, wherein the access point sends the resource allocation message frame to the station before the message frame is sent, and wherein a field is set in the beacon frame to indicate that Intended stations contend for accessing the channel within an OFDMA Back-Off, OBO, period specified within a contention-free period. receiving by the station a resource message allocation frame sent by the access point, wherein the resource message allocation frame contains information of the bandwidth resource allocated by the access point to the station, wherein the message frame is a beacon frame, wherein the access point sends the resource allocation message frame to the station before the message frame is sent, and wherein a field is set in the beacon frame to indicate that Intended stations contend for accessing the channel within an OFDMA Back-Off, OBO, period specified within a contention-free period.