1. A wireless station, comprising:at least one antenna;
at least one radio in communication with the at least one antenna and configured to perform communications via a Wi-Fi interface; and
at least one processor in communication with to the at least one radio;
wherein the at least one processor is configured to cause the wireless station to:
transmit, to a first peer wireless station of a plurality of peer wireless stations within transmission range of the wireless station, a first availability schedule via a scheduling negotiation message, wherein the first availability schedule comprises one or more types of committed availability, wherein a first type of committed availability is non-cancelable and a second type of committed availability is cancelable, wherein the scheduling negotiation message includes an attribute indicating a change to the one or more types of committed availability, and wherein the change is one of a plurality of types of changes comprising a first type of change indicating that the change conflicts with an existing committed availability schedule and a second type of change indicating that the change adds additional conditional availability, additional committed availability, or additional conditional availability and additional committed availability;
receive, from the first peer wireless station, a second availability schedule applicable to the wireless station but not applicable to other peer wireless stations, wherein the second availability schedule comprises the second type of committed availability; and
transmit, to a second peer wireless station of the plurality of peer wireless stations, a third availability schedule comprising the first type of committed availability.