Method and system for DSS between LTE cell and NR cell in wireless network

A network entity in a wireless network, the network entity comprising:

• a communicator;
• and
• at least one processor coupled to the communicator, and configured to:
• determine a plurality of dynamic spectrum sharing (DSS) parameters for sharing of resources of a same carrier between a long-term evolution (LTE) cell and a new radio (NR) cell, wherein the plurality of DSS parameters includes information on a buffer occupancy (BO), a modulation and coding scheme (MCS), and a packet delay budget (PDB),
• determine an allocation of physical layer resources between the LTE cell and the NR cell based on the plurality of DSS parameters,
• determine a fairness index for maintaining fairness among a plurality of bearers of the LTE cell and a plurality of bearers of the NR cell based on the determined allocation of physical layer resources, accumulated transport block sizes for the LTE cell and the NR cell, and guaranteed bit rates (GBR) for the LTE cell and the NR cell,
• determine key performance indicator (KPI) parameters based on the fairness index, throughput associated with the LTE cell and the NR cell, and interference associated with the LTE cell and the NR cell, and
• allocate physical layer resources between the LTE cell and the NR cell based on the KPI parameters.