Research On Micro Base Station Interference Management Technology In LTE-Advanced Heterogeneous Networks

With the rapid development of data communication services of mobile communication technology, how to ensure network performance and provide high-quality service has become a hot research. According to the 3GPP, the technology of LTE-A system heterogeneous network was proposed. It is Interference Management Technology of micro base station frequency interference scenarios in LTE-A systems heterogeneous networks that was completed in this paper. Based on the experimental simulation of two kinds of interference coordination schemes for frequency reuse and centralized power control of micro base station, the influence of the same frequency interference on the system performance is studied.Firstly, the solutions of frequency reuse interference system, due to the interference of the family micro base station, was induction. Through the simulation of the effect of frequency reuse scheme family micro base station interference management, can to some extent reduce the same frequency interference between family micro base station. Adaptive soft frequency reuse scheme is introduced in order to realize the dynamic frequency reuse factor of micro base station. According to simulation results, the adaptive soft frequency reuse can not only achieve a dynamic adjustment of the frequency reuse factor with family micro base station under the premise of home micro base station transmit power, but also ensure the communication quality of the user living on the edge and the throughput of resident living edge. By means of the experimental simulation of frequency reuse and centralized power control in the same communication environment, it is concluded that the performance of power control technology is better in the interference management of micro base station.Secondly, according to the diversity of family micro base station deployment randomness and user needs, based on the family micro base station power control interference coordination technology introduced in the heterogeneous network family micro base station power control scheme. According to the hierarchical family micro base station power control technology, the power control scheme based on game algorithm studied in this paper. Family micro base station gateway using, tank Burg algorithm based on game theory, through the power pricing and iterative scheme, to find the family micro base station optimal transmit power, so as to reduce the interference on Acer station of the user.Finally, Distributed community game algorithm of dry power control scheme based on Simulation completed in this paper. According to the experimental results, in order to ensure the family micro user base and macro base station the user’s communication quality and at a minimum of interference to macro base station user, the optimal transmit power of micro base station is found in the power control scheme. Also shows that this scheme can adapt to the family micro interference management.