A method for quiet period management in secondary networks comprising a coexistence manager and a plurality of access points, APs (331, 333, 577, 583), of coexisting emergency ad hoc networks (578, 580), the method comprising: in the coexistence manager, detecting intraframe sensing, IRFS, and interframe sensing, IFS, information from broadcasts by one or more cognitive base stations (341, 342, 343, 344, 572) of at least one Wireless Regional Area Network, WRAN, using TV White Spaces as secondary users; in the coexistence manager, transmitting the IRFS and IFS information to the plurality of access points, APs (331, 333, 577, 583), of coexisting emergency ad hoc networks (578, 580). in the APs (331, 333, 577, 583), receiving intraframe sensing, IRFS, and interframe sensing, IFS, information from the co-existence manager, and broadcasting an intention of data transmission during an IRFS interval (592, 594) employing a unique access request packet, ARP; in the coexistence manager, allocating the IRFS interval (592, 594) for dedicated access over an active channel between an access point, AP (331, 333, 577, 583), and a component based on the detected IFRS and IFS information and the ARP of one of the APs; in the coexistence manager, scheduling an IFS interval (463, 465, 467, 469) spanning multiple consecutive frames based on a cumulative report from the IRFS on a status of the active channel; and in the coexistence manager, allocating the IFS interval (463, 465, 467, 469) for contentious access over a plurality of channels between a plurality of APs (331, 333, 577, 583) and corresponding components based on the detected IFRS and IFS information, wherein the AP (331, 333, 577, 583) transmitting the smallest among broadcasted timestamps included in the ARPs receives dedicated access over an active channel to communicate with a component based on the received IFRS and IFS information. in the coexistence manager, detecting intraframe sensing, IRFS, and interframe sensing, IFS, information from broadcasts by one or more cognitive base stations (341, 342, 343, 344, 572) of at least one Wireless Regional Area Network, WRAN, using TV White Spaces as secondary users; in the coexistence manager, transmitting the IRFS and IFS information to the plurality of access points, APs (331, 333, 577, 583), of coexisting emergency ad hoc networks (578, 580). in the APs (331, 333, 577, 583), receiving intraframe sensing, IRFS, and interframe sensing, IFS, information from the co-existence manager, and broadcasting an intention of data transmission during an IRFS interval (592, 594) employing a unique access request packet, ARP; in the coexistence manager, allocating the IRFS interval (592, 594) for dedicated access over an active channel between an access point, AP (331, 333, 577, 583), and a component based on the detected IFRS and IFS information and the ARP of one of the APs; in the coexistence manager, scheduling an IFS interval (463, 465, 467, 469) spanning multiple consecutive frames based on a cumulative report from the IRFS on a status of the active channel; and in the coexistence manager, allocating the IFS interval (463, 465, 467, 469) for contentious access over a plurality of channels between a plurality of APs (331, 333, 577, 583) and corresponding components based on the detected IFRS and IFS information, wherein the AP (331, 333, 577, 583) transmitting the smallest among broadcasted timestamps included in the ARPs receives dedicated access over an active channel to communicate with a component based on the received IFRS and IFS information.