Apparatus and method for dynamic resource exchange in cognitive radio (CR) based communication system

A channel exchange method of a channel exchange accepting Base Station (BS) that receives a channel exchange request from a neighboring BS in a Cognitive Radio (CR) based communication system, the method comprising:

• sending a channel advertisement message to a neighboring BS;
• receiving a channel exchange request message from the neighboring BS;
• sending a channel exchange response message to the neighboring BS in response to the channel exchange request message, the channel exchange response message comprising at least one of the neighboring BS Identifier (ID), an ID of the channel exchange accepting BS, channel information for the channel exchange, and exchange target channel information of the neighboring BS;
• and
• receiving a channel exchange reply message indicative of whether the neighboring BS executes a channel exchange process according to the channel exchange response message, from the neighboring BS.

A requesting Base Station (BS) that requests a neighboring BS to exchange a channel in a Cognitive Radio (CR) based communication system, the requesting BS comprising:

• a receiver configured to receive a channel advertisement message from a neighboring BS and receive a channel exchange response message from the neighboring BS in response to a channel exchange request message sent to the neighboring BS;
• and
• a transmitter configured to send the channel exchange request message to the neighboring BS, determine whether to execute a channel exchange process to the neighboring BS based on information in the channel exchange response message received from the neighboring BS, and send a channel exchange reply message indicative of the determination result,
• wherein the channel exchange request message comprises at least one of:
• a neighbor BS Identifier (ID);
• an ID of the requesting BS;
• channel information for the channel exchange at the requesting BS;
• and channel information exchangeable at the neighboring BS.

A channel exchange accepting Base Station (BS) that receives a channel exchange request from a neighboring BS in a Cognitive Radio (CR) based communication system, the channel exchange accepting BS comprising:

• a transmitter configured to send a channel advertisement message to a neighboring BS and send a channel exchange response message to the neighboring BS in response to a channel exchange request message received from the neighboring BS;
• and
• a receiver configured to receive the channel exchange request message from the neighboring BS and receive a channel exchange reply message indicative of whether the neighboring BS receive the channel exchange response message executes a channel exchange process, from the neighboring BS,
• wherein the channel exchange response message comprises at least one of:
• a neighboring BS Identifier (ID);
• an ID of the channel exchange accepting BS;
• channel information for the channel exchange;
• and exchange target channel information of the neighboring BS.