A method and system: back-tracking forward-looking (BTFL) dynamic channel allocation mechanism for white space radio

摘要

Spectrum is allocated to enquiring white space devices to ensure that no harmful interference occurs with other devices within a white space radio network. An enquiring white space device requests at least one channel or spectrum range from an allocation server. The allocation server determines whether the white space device is operating on a local or national instance. The allocation server communicates with a pre-populated white space database which indicates available unused white space channels, calculated from primary transmitter parameters and having at least local and national instances. The allocation server determines which available channels are applicable to the enquiring white space device based on the pre-defined location and time period. The available channels are classified and ranked into a first list of channels with best single channel characteristics and a second list with best contiguous channel characteristics. The channels are allocated to the enquiring white space devices on a first-come first-served basis.