| The wireless network coverage and its capacity are facing higher requirements,because of the explosive growth of data communication business and wireless communication services.Although,the operators have deployed a variety of wireless networks,the coverage of the district is also decreasing,but the interference problems are still becoming increasingly prominent,which gives the network users poor experiences,so the requirements of the operators to build and optimize the network are still very high.Therefore,it is a research hotspot for researchers to improve the quality of LTE networks and provide users with a pure mobile network.Interference investigation and avoidance is extremely complex,how to solve the interference has been plagued by the major operators.Based on the research results in recent years,this paper makes a study on the interference investigation and the mitigation measures based on the experience gained from the current investigation.For the intra-system interference,combined with the work factors,looking for interference sources,checking the base station one by one,alignment clock,so that the system return normal.For the inter-system interference,with the spectrum analyzer investigation,interference positioning,classify the interference,suppress the interference separately.By replacing the antenna or jumper,removing the high frequency and other measurements,making the number of heavily disturbed cells from the total 8.9% to be effectively reduced.For the interference within the band,upgrading the TDD-LTE software,installing anti-filter and other measures should be done to reduce interference.It's believed that the contents of this paper will provide a good reference for the front-line staff to to grasp the method of interference detection and avoidance more accurately and more conveniently.The conclusions in this paper will also be of great significance to the further research and development of the suppression of the LTE network interference. |
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