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| Ultra dense network technology will become an important research direction for the development of the fifth generation (5G) mobile communication in the future. In order to improve the spectrum efficiency of ultra dense networks and coordinate downlink interference, this paper considers an ultra-dense network that separates the control plane from the user plane. Based on this, a coloring-based dynamic channel allocation (CDCA) scheme is proposed. Firstly, this scheme built a network interference topology. Secondly, a new coloring algorithm is proposed according to the state of the base station. Finally, the channel is dynamically allocated according to the channel state of the user equipment. Through the simulation results, we prove that the proposed scheme improves the average user capacity and mitigates the co-tier interference. |
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| Keywords:ultra-dense network; coloring-base theory; dynamic channel allocation |
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