Wireless communication system, and transmitting power and bandwidth allocation method thereof

The present invention discloses a wireless communication system, and their bandwidth and transmission power allocation method. Center to the invention is used that is not a have a licensed bandwidth permit the primary user device for transmitting and receiving data and the bandwidth and allowed bandwidth, jeonghamyeo the state that does not interfere with the communications of the user equipment interference temperature limit (s) to use calculating the interference temperature going by increasing the bandwidth from a frequency, and calculates the communication capacity using the assigned temperature obtained by subtracting the interference temperature at the interference temperature limit (s) satisfies the communication capacity of the calculated communication capacity is set, the assigned temperature and obtain the CR power using the bandwidth, within the range not exceeding the interference limit temperature characterized in that it comprises a CR user device for transmitting and receiving data using the bandwidth and the power CR. Therefore, the radio communication system and their bandwidth and transmission power allocation method of the present invention sets the interference temperature limit value, and only in a range that does not interfere with the primary user using the interference temperature, state not use the user, including the bandwidth used that is without having a radio interference that the user is required to recognize the user and the wireless bandwidth and by allocating the transmission power state to satisfy the communication capacity and performance to the user with each other coexist in the bandwidth and utilizes the limited frequency resources more effectively to communication.