A method for transmitting a High-Efficiency Signal Field B, HE-SIGB, in a wireless local area network, the method comprising: transmitting the HE-SIGB in a transmission bandwidth of multiple 20MHz, wherein the HE-SIGB comprises two HE-SIGB contents, including a first HE-SIGB content carried at each odd-numbered 20MHz sub-channel and a second HE-SIGB content carried at each even-numbered 20MHz sub-channel, wherein the first HE-SIGB content comprises a first common field and a first user-specific field, wherein the first common field comprises one or more first resource allocations, RA, wherein the second HE-SIGB content comprises a second common field and a second user-specific field, wherein the second common field comprises one or more second resource allocations, RA, wherein each of the one or more first RA corresponds to one odd-numbered 20MHz sub-channel, and each of the one or more second RA corresponds to one even-numbered 20MHz sub-channel, wherein the first user-specific field comprises one or more first user scheduling information subfields, each of the one or more first user scheduling information subfields comprising information of one station, STA, the STA being scheduled on one of the one or more resource units indicated by the one or more first RA, and wherein the second user-specific field comprises one or more second user scheduling information subfields, each of the one or more second user scheduling information subfields comprising information of one STA, the STA being scheduled on one of the one or more resource units indicated by the one or more second RA, characterized in that one first RA of the one or more first RA indicates a first allocated resource unit, RU, which is in or overlaps the corresponding one odd-numbered 20MHz sub-channel, wherein the one first RA further indicates that, in the first HE-SIGB content, a number of a user scheduling information subfield corresponding to the first allocated RU is 0; or one second RA of the one or more second RA indicates a second allocated RU, which is in or overlaps the corresponding one even-numbered 20MHz sub-channel, wherein the one second RA further indicates that, in the second HE-SIGB content, a number of a user scheduling information subfield corresponding to the second allocated RU is 0. transmitting the HE-SIGB in a transmission bandwidth of multiple 20MHz, wherein the HE-SIGB comprises two HE-SIGB contents, including a first HE-SIGB content carried at each odd-numbered 20MHz sub-channel and a second HE-SIGB content carried at each even-numbered 20MHz sub-channel, wherein the first HE-SIGB content comprises a first common field and a first user-specific field, wherein the first common field comprises one or more first resource allocations, RA, wherein the second HE-SIGB content comprises a second common field and a second user-specific field, wherein the second common field comprises one or more second resource allocations, RA, wherein each of the one or more first RA corresponds to one odd-numbered 20MHz sub-channel, and each of the one or more second RA corresponds to one even-numbered 20MHz sub-channel, wherein the first user-specific field comprises one or more first user scheduling information subfields, each of the one or more first user scheduling information subfields comprising information of one station, STA, the STA being scheduled on one of the one or more resource units indicated by the one or more first RA, and wherein the second user-specific field comprises one or more second user scheduling information subfields, each of the one or more second user scheduling information subfields comprising information of one STA, the STA being scheduled on one of the one or more resource units indicated by the one or more second RA, characterized in that one first RA of the one or more first RA indicates a first allocated resource unit, RU, which is in or overlaps the corresponding one odd-numbered 20MHz sub-channel, wherein the one first RA further indicates that, in the first HE-SIGB content, a number of a user scheduling information subfield corresponding to the first allocated RU is 0; or one second RA of the one or more second RA indicates a second allocated RU, which is in or overlaps the corresponding one even-numbered 20MHz sub-channel, wherein the one second RA further indicates that, in the second HE-SIGB content, a number of a user scheduling information subfield corresponding to the second allocated RU is 0.