Sas pal gaa co-channel interference mitigation

A shared spectrum network device in a higher-tier network, the shared spectrum network device comprising one or more processors configured to:

• receive information provided from a lower-tier network;
• estimate, based on the information, interference to the higher-tier network from one or more transmitters of the lower-tier network;
• compare the estimated interference to a threshold value;
• and
• identify a geographic zone in which transmission by one or more transmitters of the lower-tier network is limited based on the comparison.

A shared spectrum network device in a lower-tier network comprising one or more processors configured to:

• generate and transmit, to the higher-tier network via an interface, information related to one or more transmitters of the lower-tier network;
• receive, from the higher-tier network via the interface, a geographic zone of limited transmission by one or more transmitters of the lower-tier network based on the information;
• and
• transmit or withhold transmission of signals by one or more transmitters of the lower-tier network based on the geographic zone.

A method of operating a shared spectrum network device in a higher-tier network, the method comprising:

• receiving information that indicates a statistical distribution of transmitters of a lower-tier network and a number of transmitters of the lower-tier network;
• estimating an aggregate interference to the higher-tier network from the lower-tier network based on the information;
• determining a geographic zone for limited transmission by one or more transmitters of the lower-tier network based on the aggregate interference;
• and
• indicating the geographic zone to the lower-tier network.