Coordinated carrier aggregation for campus of home base stations

This paper present resource optimization for improving the performance of coordinated multi- point transmission (CoMP) with carrier aggregation. The resulting coordinated carrier aggregation system CCA can improve the throughput performance of the CoMP systems by using different carriers for the multi- point transmission and so reducing the overall interference. However, this performance improvement comes at the expense of using more spectrum, especially for uncoordinated deployment of clusters of HeNBs. The paper propose to use graph coloring technique for optimizing the component carriers usage in the campus and evaluate the performance for a test scenario of 25 open HeNBs deployed outdoor in a square coverage region of 800m long. It is shown that performance improvement of 8 % is possible for such deployment with an average of 2 component carriers over CoMP without carrier aggregation.