A method to be performed by a first wireless communication station, STA, the method comprising: transmitting a Request to Send, RTS, frame (310, 320) to a second STA to establish a Transmission Opportunity, TxOP, during which a data frame may be transmitted, the RTS frame duplicated over a plurality of channels in a millimeter frequency band above 45 Gigahertz, GHz, a header field of the RTS frame comprising a bandwidth indication of a channel bandwidth comprising the plurality of channels; receiving a Clear to Send, CTS, frame (317, 319) from the second STA over at least first and second channels of the plurality of channels; and transmitting a data frame to the second STA during the Transmission Opportunity, TxOP, wherein transmitting the data frame (311, 521) comprises: (i) transmitting a first portion of a frame transmission duplicated over the at least first and second channels, the first portion comprising a Short Training Field, STF, a Channel Estimation, CE, field, a first header, and a second header, wherein the first header is a legacy header, to be decoded by legacy devices, which do not support reading the second header, and the second header is a new header, to be decoded by next generation devices; and (ii) transmitting a second portion of the frame transmission extending over a frequency band that comprises the at least first and second channels, the second portion comprising at least a data field. transmitting a Request to Send, RTS, frame (310, 320) to a second STA to establish a Transmission Opportunity, TxOP, during which a data frame may be transmitted, the RTS frame duplicated over a plurality of channels in a millimeter frequency band above 45 Gigahertz, GHz, a header field of the RTS frame comprising a bandwidth indication of a channel bandwidth comprising the plurality of channels; receiving a Clear to Send, CTS, frame (317, 319) from the second STA over at least first and second channels of the plurality of channels; and transmitting a data frame to the second STA during the Transmission Opportunity, TxOP, wherein transmitting the data frame (311, 521) comprises: (i) transmitting a first portion of a frame transmission duplicated over the at least first and second channels, the first portion comprising a Short Training Field, STF, a Channel Estimation, CE, field, a first header, and a second header, wherein the first header is a legacy header, to be decoded by legacy devices, which do not support reading the second header, and the second header is a new header, to be decoded by next generation devices; and (ii) transmitting a second portion of the frame transmission extending over a frequency band that comprises the at least first and second channels, the second portion comprising at least a data field. (i) transmitting a first portion of a frame transmission duplicated over the at least first and second channels, the first portion comprising a Short Training Field, STF, a Channel Estimation, CE, field, a first header, and a second header, wherein the first header is a legacy header, to be decoded by legacy devices, which do not support reading the second header, and the second header is a new header, to be decoded by next generation devices; and (ii) transmitting a second portion of the frame transmission extending over a frequency band that comprises the at least first and second channels, the second portion comprising at least a data field.