Patent ID: 7650126

Claim:
A method for efficiently utilizing spectrum resources, comprising: determining multiple spectrum opportunities, wherein each opportunity is identified by a frequency range and a time duration; determining whether signals are present in said identified frequency range, wherein if the signals are present, then analyzing said signals and determining the characteristics of said signals; if the signals are not present in said identified frequency range, then transmitting desired signals using fixed operating conditions; wherein if the signals are present in said identified frequency range, then determining a set of altered transmission characteristics based on the determined signal characteristics to allow for transmission of a desired signal in said identified frequency range, wherein said altered transmission characteristics avoid interference with signals expected in said frequency range; and transmitting said desired signal over the multiple spectrum opportunities simultaneously using said altered transmission characteristics when said transmission occurs during said time duration; wherein said determining multiple spectrum opportunities comprises: determining a location of a receiving device; obtaining location and transmission characteristics for known transmitters from at least one database; and determining an estimated received signal characteristics based on the location and transmission characteristics of said transmitters and a location of said receiving device.