A method of communicating over a wireless communication network, the method characterized by : determining a total bandwidth for a transmission of a message according to a first specification, the total bandwidth comprising a plurality of tones, wherein a portion of the total bandwidth is occupied by a transmission according to a second specification different from the first specification; logically dividing the plurality of tones into a plurality of useable tones and into a plurality of guard tones and a plurality of direct current tones, to form a tone plan that preserves at least one physical boundary according to the second specification; logically dividing the plurality of useable tones into a plurality of resource units; wherein logically dividing the plurality of useable tones into the plurality of resource units comprises allocating a number of tones in the plurality of tones that are not in any resource unit into one or more of a center block, a left center block, and a right center block; determining an indication, the indication assigning and channel bonding at least two of the plurality of resource units to a wireless communication device of a plurality of wireless communication devices, wherein the indication does not assign the portion of the total bandwidth that is occupied by the transmission according to the second specification; wherein the indication further assigns at least a portion of one of the center block, the left center block, and the right center block to the wireless communication device of the plurality of wireless communication devices; and transmitting the indication to the plurality of wireless communication devices. determining a total bandwidth for a transmission of a message according to a first specification, the total bandwidth comprising a plurality of tones, wherein a portion of the total bandwidth is occupied by a transmission according to a second specification different from the first specification; logically dividing the plurality of tones into a plurality of useable tones and into a plurality of guard tones and a plurality of direct current tones, to form a tone plan that preserves at least one physical boundary according to the second specification; logically dividing the plurality of useable tones into a plurality of resource units; wherein logically dividing the plurality of useable tones into the plurality of resource units comprises allocating a number of tones in the plurality of tones that are not in any resource unit into one or more of a center block, a left center block, and a right center block; determining an indication, the indication assigning and channel bonding at least two of the plurality of resource units to a wireless communication device of a plurality of wireless communication devices, wherein the indication does not assign the portion of the total bandwidth that is occupied by the transmission according to the second specification; wherein the indication further assigns at least a portion of one of the center block, the left center block, and the right center block to the wireless communication device of the plurality of wireless communication devices; and transmitting the indication to the plurality of wireless communication devices. <EOS>