The Research Of Short Sea Lanes Mobile Communications Based On FDD-LTE

In recent years,along with the rapid development of China’s economy,the development of maritime tourism is booming.More and more tourists travel by sea and traditional fisheries are booming.The fishermen also need to upload and download a large amount of data during the operation.Therefore,The coverage and optimization of wireless communication networks for short-haul sea lanes is important.However,it is clear that the wireless environment on the sea is very complicated.The propagation path is mostly composed of two parts,namely the direct wave of air propagation and the reflected wave of sea surface reflection.This propagation environment is close to the propagation environment of free space.Affected by the sea and the wind and waves,the actual height of the receiving end of the ship on the sea surface also fluctuates greatly with the wind and waves.Because the special scene of the sea area is sparsely populated and the business needs are scattered,the coverage problem has become a top priority.The effect of the TD-LTE(Time Division Long Term Evolution)network construction in the past years has not reached the expected level,and it is difficult to achieve wide-area coverage,so whether it is from Network coverage is also a network quality perspective,and it is urgent to solve the problem of wide coverage of sea areas through the networking mode of FDD-LTE(Frequency Division Duplexing Long Term Evolution).In this paper,based on the FDD-LTE network system covering sea lanes to improve network performance,the characteristics of sea area scenarios are wide and sparse,and business needs are dispersed.Through the combination of foreground testing and background analysis,the coverage of sea area LTE networks using FDD standard coverage is summarized.The advantages of TDD,including FDD-LTE coverage,anti-jamming performance,and rate are very high compared to pure TD-LTE network coverage:(1)The background and significance of this paper are studied.The domestic and international research trends and progress of wireless network coverage in sea scenes are analyzed,and the practical problems to be solved in this paper are introduced.(2)Studying the network characteristics of FDD-LTE,the frame structure of FDD-LTE,the technical principle of uplink and downlink physical channels,and the unique environmental propagation model for sea area coverage,comparing the advantages of TD-LTE sea area scenarios to network sea area scenarios.Particularity With comprehensive and in-depth research,as well as the problems faced by the sea scene,the FDD-LTE network is used to form a sea area scene coverage solution to improve network quality.(3)Introduce the design and implementation of the FDD-LTE network networking solution,select the frequency planning and networking mode according to the actual situation,and formulate the re-election strategy and interoperate with the TD-LTE network,and briefly study the days.The solution to the problem of feeding.(4)After the opening of the network,the single-station index analysis was carried out for the base station in FDD sea area,and then the coverage test and analysis were carried out for the airline network performance.The performance of TD-LTE network on coverage,RSRP,SINR and other important indicators was compared to verify the impact of FDD-LTE network on the whole network opening,and then the flow absorption capacity of FDD base station was analyzed.