A method of wireless medium access for establishing a decentralized wireless network, the method comprising broadcasting of beacon frames by each of a plurality of devices; listening, at each device, for beacon frames of other devices; identifying, at each device, other devices who's beacon frames have been heard; and forming the decentralised wireless network as at least two dynamic networks, each dynamic network being centered around one of the devices and having said other devices who's beacon frames have been heard by said one device as network members.