A Practical Tessellation-Based Approach for Optimizing Cell-Specific Bias Values in LTE-A Heterogeneous Cellular Networks

Algorithm 2

Proposed algorithm for determining cell-specific bias values.

(1) Step  0: Initialize for , , , , .

(2) Step  1: Set and .

(3) Step  2: Increase by 1 and select the sBS with the minimum value by calculating the degree

   of consistency for each , , as

.

(4) Step  3: For , repeat the following process until cannot be further maximized.

   If an increase in results in a better consistency value such that , set .

   Otherwise, if a decrease in results in a better consistency value such that , set

   . Here and .

(5) Step  4: If , set and and go back to Step  2.

(6) Step  5: If , set and .

(7) Step  6: If , go back to Step  1 by setting and increasing by 1. Otherwise, terminate

   the algorithm. Here, generates a random neighbor around .