A transmitter network, comprising: at least two transmitters (AP1, AP2,...) which transmit in a same frequency range; wherein in a unicast transmission mode of the transmitters (AP1, AP2,...), the transmitters (AP1, AP2,...) are adapted to transmit unicast information packets in subsequent first time intervals (o-t3; t4-t8; t9-t12; t13-t17;...); wherein the transmitters (AP1, AP2,...) are further adapted to simultaneously transmit in a broadcast mode or multicast mode, respectively, broadcast or multicast information (BC/MC) in second time intervals (t3-t4; t8-t9; t12-t13; t17-t18) that lie in between first time intervals, the broadcast information or multicast information, respectively, transmitted by the transmitters (AP1, AP2,...) in a second time interval being equal and being transmitted by the transmitters (AP1, AP2,...) time synchronous; wherein the transmitters (AP1, AP2,...) are synchronized in time with each other, so as to form a Single Frequency Network within the second time intervals; wherein a first transmitter (AP1, AP2,...) of the transmitters (AP1, AP2,...) is adapted to transmit a WLAN transmission signal, a serial data stream of the WLAN transmission signal comprising repeatedly occurring beacon frames, wherein some of the beacon frames comprise at least one of a first and a second codeword, the first codeword having a first value indicating the unicast transmission mode of the first transmitter, or a second value indicating the broadcast or the multicast transmission mode of the first transmitter, the second codeword being a measure of the length of the second time interval and the first and/or the second codeword being included in an Enhanced Distributed Channel Access, EDCA, parameter element in a beacon frame; wherein the first and/or the second codeword are stored in a bit combination in the EDCA parameter element; wherein the EDCA parameter element comprises a partial parameter element or an additional parameter element (AC_BC Parameter Record, 602), the partial parameter element or the additional parameter element (AC_BC Parameter Record, 602) comprising the first codeword and/or the second codeword, the partial parameter element being one of the EDCA partial parameter elements standardized in the WLAN standard specification IEEE802.11. at least two transmitters (AP1, AP2,...) which transmit in a same frequency range; wherein in a unicast transmission mode of the transmitters (AP1, AP2,...), the transmitters (AP1, AP2,...) are adapted to transmit unicast information packets in subsequent first time intervals (o-t3; t4-t8; t9-t12; t13-t17;...); wherein the transmitters (AP1, AP2,...) are further adapted to simultaneously transmit in a broadcast mode or multicast mode, respectively, broadcast or multicast information (BC/MC) in second time intervals (t3-t4; t8-t9; t12-t13; t17-t18) that lie in between first time intervals, the broadcast information or multicast information, respectively, transmitted by the transmitters (AP1, AP2,...) in a second time interval being equal and being transmitted by the transmitters (AP1, AP2,...) time synchronous; wherein the transmitters (AP1, AP2,...) are synchronized in time with each other, so as to form a Single Frequency Network within the second time intervals; wherein a first transmitter (AP1, AP2,...) of the transmitters (AP1, AP2,...) is adapted to transmit a WLAN transmission signal, a serial data stream of the WLAN transmission signal comprising repeatedly occurring beacon frames, wherein some of the beacon frames comprise at least one of a first and a second codeword, the first codeword having a first value indicating the unicast transmission mode of the first transmitter, or a second value indicating the broadcast or the multicast transmission mode of the first transmitter, the second codeword being a measure of the length of the second time interval and the first and/or the second codeword being included in an Enhanced Distributed Channel Access, EDCA, parameter element in a beacon frame; wherein the first and/or the second codeword are stored in a bit combination in the EDCA parameter element; wherein the EDCA parameter element comprises a partial parameter element or an additional parameter element (AC_BC Parameter Record, 602), the partial parameter element or the additional parameter element (AC_BC Parameter Record, 602) comprising the first codeword and/or the second codeword, the partial parameter element being one of the EDCA partial parameter elements standardized in the WLAN standard specification IEEE802.11.