Patent ID: 8625567

Claim:
A method for channel vacation used in radio communication devices, the method comprising: receiving, by a first radio communication device serving as a non-control device in a first network, timing synchronization information of the first network transmitted by a second radio communication device serving as a control device in the first network; embedding, by said first radio communication device, said timing synchronization information of the first network into non-management frames; identifying, by a third radio communication device serving as either non-control device or control device in a second network, through receiving said first network's time synchronization information embedded into non-management frames transmitted by said first radio communication device, period (Command Exchange Period) of time within the said first network in which a command frame is allowed to be transmitted; giving notice, from said third radio communication device to said first radio communication device, second radio communication device and all other devices in said first network, through transmitting a broadcast channel vacation request frame in said Command Exchange Period, to vacate a current radio channel; and stopping, by said first radio communication device, said second radio communication device or any communication device in said first network, all transmissions in said current radio channel, upon receiving said channel vacation request frame transmitted by said third radio communication device.