Quasi-dynamic spectrum access for internet of things (iot) applications

A device comprising a processor configured to perform a method comprising:

• receiving information about an expected use of a spectrum band in a radio frequency spectrum, the expected use by a primary user;
• classifying the expected use of the spectrum band into at least two working modes, the classifying responsive to the information about the expected use;
• sensing the spectrum band to determine a current access pattern of the primary user;
• selecting one of the working modes as a current working mode of the primary user, the selecting responsive to the classifying and to the current access pattern of the primary user;
• scheduling transmissions on the spectrum band using a current schedule that is responsive to the current working mode of the primary user, the scheduling as a secondary user of the spectrum band;
• determining whether the current working mode of the primary user has changed;
• if the current working mode of the primary user has changed, re-performing the sensing, selecting, scheduling, and determining;
• and
• if the current working mode of the primary user has not changed, re-performing the scheduling and determining.

A computer program product comprising:

• a tangible storage medium readable by a processing circuit and storing instructions for execution by the processing circuit for performing a method comprising:
• receiving information about an expected use of a spectrum band in a radio frequency spectrum, the expected use by a primary user;
• classifying the expected use of the spectrum band into at least two working modes, the classifying responsive to the information about the expected use;
• sensing the spectrum band to determine a current access pattern of the primary user;
• selecting one of the working modes as a current working mode of the primary user, the selecting responsive to the classifying and to the current access pattern of the primary user;
• scheduling transmissions on the spectrum band using a current schedule that is responsive to the current working mode of the primary user, the scheduling as a secondary user of the spectrum band;
• determining whether the current working mode of the primary user has changed;
• if the current working mode of the primary user has changed, re-performing the sensing, selecting, scheduling, and determining;
• and
• if the current working mode of the primary user has not changed, re-performing the scheduling and determining.

A system comprising:

• a media access control (MAC) layer module configured for:
• receiving information about an expected use by a primary user of the spectrum band;
• classifying the expected use by the primary user into at least two working modes, the classifying responsive to the information about the expected use;
• and
• selecting one of the working modes as a current working mode of the primary user, the selecting responsive to the classifying and to a current access pattern of the primary user on the spectrum band;
• and
• a physical (PHY) layer module in communication with the MAC layer module, the PHY layer module configured for:
• sensing the spectrum band to determine the current access pattern of the primary user;
• scheduling transmissions on the spectrum band using a current schedule that is responsive to the current working mode of the primary user;
• determining whether the current working mode of the primary user has changed;
• if the current working mode of the primary user has changed, communicating the change to the MAC layer module, wherein the MAC layer module re-performs the selecting responsive to the communicating;
• and
• if the current working mode of the primary user has not changed, re-performing the scheduling and determining.