Interference-suppression and energy-saving cellular network relay station deployment method

Abstract

The invention discloses an interference-suppression and energy-saving cellular network relay station deployment method, which aims at problems that the traditional cellular network has high energy loss, high base station apparatus costs and low energy efficiency. The interference-suppression and energy-saving cellular network relay station deployment method comprises the steps: firstly, according to position distribution of users, determining position coordinates and quantity of candidate relay stations by utilizing a K-means algorithm; drawing an interference figure of the candidate relay stations; constructing a basic model which can maximize energy efficiency under limitation conditions of deployment budget, spectrum efficiency and interference threshold distance; performing relay station optimal deployment selection by utilizing a greedy selection way; finally determining the positions and quantity of the relay stations. The interference-suppression and energy-saving cellular network relay station deployment method can be applied to cellular relay network, and can directly deploy a new relay station on a desired place, thereby reducing the total energy loss of the communication system, and meanwhile, ensuring the system capacity and the user service quality; the interference-suppression and energy-saving cellular network relay station deployment method can be further applied to deploying other sites of the cellular network, such as micro NodeBs and femtocells.

Description

technical field [0001] The present invention relates to the technical field of wireless communication, and in particular, to a method for deploying a cellular network relay station for interference suppression and energy saving. Background technique [0002] The rapid development of wireless networks has provided convenience for people's lives, but the huge energy consumption generated by the communication industry cannot be ignored. The energy consumption of information and communication technology has become a focus. According to relevant studies, the energy consumption of ICT accounts for about 2% of the global carbon dioxide emissions. In particular, the energy consumption of the base station accounts for 60% to 80% of the total energy consumption of the cellular network. Traditional cellular networks can no longer meet the current demand for the number of users and service traffic. Therefore, in order to reduce the energy consumption of the cellular network, and comb...

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Problems solved by technology

[0004] However, most of the previous studies on relay station deployment focused on the improvement of throughput and coverage, while ignoring the problem of the decline in energy efficiency caused by the increase in energy consumption. For the deployment of cellular network relay stations, spectrum efficiency and deployment costs are rarely considered jointly. Effect of budget, interference between base station and relay station or interference between relay stations on energy efficiency

[0005] In view of the problems of high energy consumption, high cost of base station equipment and low energy efficiency of traditional cellular networks, the deployment of relay stations mostly considers uniform and symmetrical deployment. However, it is difficult to achieve uniform and symmetrical deployment in actual application scenarios. Due to the scarcity of spectrum, in order to improve the system Spectrum efficiency, the relay station and the base station or between the relay station and the relay station in the same cell often use the same frequency band, which will cause interference in the cell. It is difficult to improve the spectrum efficiency and effectively suppress the interference between the relay stations by means of conventional power control and other methods. More importantly, under the conditions of interference and deployment costs, the dynamic balance between spectrum efficiency and energy efficiency cannot be achieved

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