Efficient co-existence method for dynamic spectrum sharing

Apparatus, comprising

• a memory comprising software code portions;
• and
• a processor,
• wherein the processor, in response to executing the software code portions, causes the apparatus to perform operations comprising:
• defining a set of resources out of a first plurality of resources, wherein the resources are orthogonal radio resources;
• controlling a transmitter to simultaneously transmit a respective first radio signal for each resource on all resources of the set;
• estimating a respective estimated interference on each of the resources of the set when the respective first radio signals are transmitted simultaneously on all resources of the set;
• selecting a first resource of the set if the estimated interference on the first resource exceeds a first predefined level;
• replacing, in the set, the first resource by a second resource of the first plurality of resources not having been part of the set;
• controlling, upon a trigger, the operations of the controlling and the estimating, the selecting, and the replacing, respectively, for a predefined time
• controlling the transmitter to simultaneously transmit a respective second radio signal for each resource on all resources of the first plurality of resources;
• measuring a respective capacity of each of the plurality of resources;
• determining a full use capacity, wherein the full use capacity is a sum of the measured capacities of all the resources when the respective second radio signals are simultaneously transmitted on all the resources;
• calculating a packed number based on a ratio of the full use capacity and a maximum capacity of each resource, wherein a number of the resources in the set is the packed number.