Interference Management Method And Its Application In 5G Ultra-dense Network

Industrial Internet,mobile Internet,Internet of things and the popularization of the emerging words such as in the network and the popularity they represent the masses of users to the fifth generation mobile communication(5G)large bandwidth,high reliability,low latency,strong coverage,high quality experience demand urgent and yearning,the demand for endless business challenges and promote the communication system of 5G of iterative optimization,Keep improving.In order to meet the broad and beautiful needs,one of the key technologies of 5G,the Ultra Ddense Network(UDN),improves the spectrum efficiency and Network capacity of the cell by densely deploying base stations in space.This by reducing the neighborhood radius,and increase the quantity of low power site,ensure the 5G communication system supports 1000 times traffic growth way will face a base station random deployment,the problem such as incompatible with heterogeneous network communication system,this will make 5G interference is more serious and diversification of communication system,wireless interference management ushered in the new challenges.Interference has always been one of the main factors affecting the performance of wireless communication.Due to the different access mechanism of each generation of communication technology,the source of interference is different,so the interference suppression measures are different.The Orthogonal Frequency Division Multiplexing Access(OFDMA)technology based on the new design and Non Othogonal Multiple Access technology(Non Othogonal Multiple Access)(Noma)as the access technology of the NR system,the main source of interference still comes from the intercell interference.The increase of adjacent sites in the ultra-dense network will lead to the generation of multiple interference sources with similar intensity,which intensifies the interference of the same frequency between the same layer or different layers.Therefore,in order to make the5 G communication system reach its performance indicators and enable users to obtain good usage perception,it is urgent to explore and adopt effective interference management technology to reduce inter-cell interference.Based on the research and analysis of the characteristics of ultra-dense network,this paper explains and introduces in detail the necessary significance of ultra-dense networking technology and the many challenges that 5G communication system will face under ultra-dense networking from the requirements of various scenarios,and focuses on the analysis of the challenges in interference management.To combine 5G network deployment trend and characteristics,to achieve better interference management technology research,this paper carried out the following three aspects: paper around existing between neighborhood interference suppression techniques,this paper studies the space interference coordination technology,the original little distinction between cluster join ideological load sensing algorithm is put forward a new help system throughput interference coordination scheme of ascension.In addition,this paper also proposes to combine Noma with the interference as noise in information theory to improve and optimize the scheduling scheme.This scheme can effectively improve the throughput of the cell system and ensure the fairness of users.In order to verify the correctness and feasibility of the proposed scheme,a simulation platform based on Matlab was used to simulate the improved scheme.The simulation results show that the two schemes can effectively reduce the interference in the ultra-dense network,and achieve a good balance between system throughput and user fairness,effectively improve the throughput and spectrum utilization of the cell system,and achieve the desired effect.