A method for scheduling self coexistence windows (SCWs), wherein SCWs are part of frames transmitted in wireless regional area networks sharing a common channel, comprises monitoring the common channel for a duration of at least a maximum SCW cycle length; checking if at least one coexistence beacon protocol packet including at least one of SCWs and quiet periods scheduled by neighbor WRANs is detected on the common channel; and establishing a SCW schedule by setting SCW schedule fields in a modified superframe control header, wherein the newly established SCW schedule does not conflict with any already scheduled SCWs and quiet periods.