Method for improving performance of cell edge users by using multi-objective genetic algorithm

Abstract

The invention discloses a method for improving the performance of cell edge users by using a multi-objective genetic algorithm, and relates to the field of communication. The method for improving the performance of the cell edge users by using the multi-objective genetic algorithm can reduce the number of edge users to the greatest extent and greatly improve the service quality and the satisfaction degree of the users. The method comprises the following steps: enabling a base station to judge whether a user is a cell edge user or not according to measurement reports of the user; enabling the base station to determine the geographical positions of the edge users in coverage; enabling the base station to determine the base station which is in the vicinity of a cell edge user set according to the geographical positions of the edge users and the geographical position of the base station; enabling the base station to exchange information with the neighboring base station through X2; and enabling the base station to generate a coverage adjusting strategy through the multi-objective genetic algorithm according to the obtained information, and adjusting the activation and the closing of an RRU (radio remote unit), the transmission power and the declination angle and the azimuth angle of an antenna to change the coverage, thereby ensuring that users in the inter-cell overlapping region are as few as possible.

Description

technical field [0001] The invention relates to the communication field, in particular to a method for improving user performance at the edge of a cell by using a multi-objective genetic algorithm. Background technique [0002] In the Long Term Evolution (Long Term Evolution, abbreviated as LTE) system, the system performance at the cell edge is especially emphasized, because the system performance at the cell edge determines whether it can bring stable and reliable service experience to users. Since the uplink of the LTE system adopts single carrier frequency division multiple access (Single carrier frequency division multiple access in English is called Single Carrier-Frequency Division Multiple Access, abbreviated as SC-FDMA), the downlink adopts orthogonal frequency division multiple access ( Orthogonal Frequency Division Multiple Access (Orthogonal Frequency Division Multiple Access, abbreviated as OFDMA) multiple access method, its spectrum utilization rate is close to...

AI Technical Summary

Problems solved by technology

However, Chinese patent CN101420760 discloses a method and device for edge user scheduling, pointing out that cell interference randomization and interference cancellation technology are highly complex, and the interference suppression effect is poor.

Chinese patent CN 102036397A discloses a resource scheduling method and device for a TD-LTE system, but it is difficult for the resource scheduling algorithm to simultaneously consider the frequency domain, time domain, air domain and power and take into account the fairness of users

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