Fig. 4

An example of a state transition. The change of radio resource status from time step t to t + 1. Each small square represents an RB. The two-dimensional coordinates on the left side of figure represent the state of the resource pool at time step t. The two-dimensional coordinates on the right side of figure represent the state of the resource pool at time step t + 1. Some RBs have already been occupied by different data (the colored squares). For example, the blue squares indicate that a URLLC data communication still occupies 3 pRBs and 6 unlicensed sRBs. There are 4 URLLC data resource profiles recorded in queue Q. For example, the first data (yellow) in queue Q require 4 sRBs and 2 pRBs. At time step t + 1, one or more data in queue Q will be allocated radio resources and sent to the mobile user. Since RBs before each time step have been used for data communication and released, the lowermost RBs (dotted squares) of the resource pool are released at time step t + 1 and added to the top