Method and system for supporting incompatible channelization of a wireless communications system

A coordinating device, comprising:

• a processor that determines a first set of physical parameters of a first channel and a second set of physical parameters of a second channel, and determines durations of protection period for the first channel and the second channel in accordance with a pre-determined rule, and adjusts between the first set of physical parameters and the second set of physical parameters;
• and
• a transceiver that broadcasts a channel-adjustment message, and communicates with a plurality of devices over the first and the second channels, wherein the channel-adjustment message comprises a set of instructions on how to adjust from the first channel to the second channel, and the set of instructions comprise channel bandwidth information for indicating how to adjust to a bandwidth of the second channel and central frequency information for indicating how to adjust to a central frequency of the second channel;
• wherein the communication over the first channel and the communication over the second channel during the protection period are performed within a same wireless communication system.

A communication method, comprising:

• communicating with a coordinating device over a first channel in a wireless communication system, wherein the first channel is associated with a first set of physical parameters;
• receiving a channel-adjustment message and information about a protection period broadcasted from the coordinating device, wherein the channel-adjustment message comprises a set of instructions on how to adjust from the first channel to a second channel, and the set of instructions comprise channel bandwidth information for indicating how to adjust to a bandwidth of the second channel and central frequency information for indicating how to adjust to a central frequency of the second channel;
• adjusting to the second channel based on the channel-adjustment message before the start of the protection period;
• and
• communicating with the coordinating device over the second channel during the protection period;
• wherein the communication over the first channel and the communication over the second channel during the protection period are performed within the same wireless communication system.

A device, comprising:

• a processor that adjusts physical parameters based on a channel-adjustment message, wherein the channel-adjustment message comprises a set of instructions on how to adjust from a first channel to a second channel, and the set of instructions comprise channel bandwidth information for indicating how to adjust to a bandwidth of the second channel and central frequency information for indicating how to adjust to a central frequency of the second channel;
• and
• a transceiver that receives the channel-adjustment message and information about a protection period transmitted from a coordinating device in a wireless system, and communicates with the coordinating device over the first channel before receiving the channel-adjustment message, and communicates with the coordinating device over the second channel during the protection period after receiving the channel-adjustment message if the device supports the second channel;
• wherein the communication over the first channel and the communication over the second channel during the protection period are performed within a same wireless communication system.