Evolved node-b, spectrum access system (sas) controller and method for communication in shared spectrum

An apparatus of an Evolved Node-B (eNB) configured for operating in accordance with a Licensed Shared Access (LSA) arrangement, the apparatus comprising:

• processing circuitry;
• and memory,
• wherein for accessing a carrier within shared spectrum on which secondary cell (Scell) transmissions are to be performed, the processing circuitry is to:
• decode from an LSA controller (LC), LSA Spectrum Resource Availability Information message that indicates that the carrier is available for secondary usage, the Spectrum Resource Availability Information message including a validity time for availability of the carrier and geographic zone restriction for the carrier, wherein primary usage of the carrier is prioritized for incumbent devices over secondary usage for Scell operation;
• configure the eNB to perform an energy detection threshold adaptation procedure to set an energy detection threshold for the carrier to be less than or equal to a maximum energy detection threshold, the maximum energy detection threshold received in a configuration message from the LC;
• encode a message for transmission to the LC, the message including an interference measurement for the carrier;
• and
• receive either an authorization from the LC to access the carrier for Scell transmissions, or a second LSA Spectrum Resource Availability Information message that indicates that a second carrier is available for secondary usage.

A non-transitory computer-readable storage medium that stores instructions for execution by processing circuitry of an Evolved Node-B (eNB) configured for operating in accordance with a Licensed Shared Access (LSA) arrangement, the instructions to configure the processing circuitry,

• wherein for accessing a carrier within shared spectrum on which secondary cell (Scell) transmissions are to be performed, the processing circuitry is to:
• decode from an LSA controller (LC), LSA Spectrum Resource Availability Information message that indicates that the carrier is available for secondary usage, the Spectrum Resource Availability Information message including a validity time for availability of the carrier and geographic zone restriction for the carrier, wherein primary usage of the carrier is prioritized for incumbent devices over secondary usage for Scell operation;
• configure the eNB to perform an energy detection threshold adaptation procedure to set an energy detection threshold for the carrier to be less than or equal to a maximum energy detection threshold, the maximum energy detection threshold received in a configuration message from the LC;
• encode a message for transmission to the LC, the message including an interference measurement for the carrier;
• and
• receive either an authorization from the LC to access the carrier for Scell transmissions, or a second LSA Spectrum Resource Availability Information message that indicates that a second carrier is available for secondary usage.