Research On China Unicom's LTE Carrier Aggregation Technology And Deployment Plan

With the popularity of mobile Internet and smart phones,the development of data services has entered the post-Moore era,and traffic has exploded,doubling every year.The carrier network is under tremendous pressure from the traffic,and the speed of network expansion is accelerating.LTE networks will soon be difficult to meet the rapidly growing demand for user data,and operators need to find effective ways to increase network throughput.LTE carrier aggregation technology can integrate and decentralize frequency bands to form larger bandwidth for user data service transmission,directly and effectively increase user data rate and expand network capacity.It is regarded as the most important key technologies for LTE network evolution to LTE-A.Different from the multi-carrier in the 3G era,LTE's carrier aggregation band and bandwidth are more flexible,can be combined across the frequency band to the maximum 100 MHz bandwidth,and combined with other related technologies to provide peak rates above 1 Gbit/s,providing flexibility for network deployment.However,it also brings great differences between different operators.The number of frequency bands is very large,and it is difficult to form a unified industrial chain.Operators need to promote the development of the industry chain according to their own needs.This paper starts with the current situation of China Unicom's network,and explores and analyzes the LTE-Advanced Carrier Aggregation(CA)technology,carrier aggregation evolution path and deployment plan.And it discusses the frequency band combination scheme of carrier aggregation based on the development trend of network technology and the existing spectrum resources of China Unicom.The main work of this paper includes:Based on the above situation,this paper explores and analyzes China Unicom's existing frequency band combination in several parts,and analyzes the current situation of the network for Changchun Unicom.The scene is optimized according to the scene,which effectively improves the network performance and improves the user.Perception.First,the background of the research topic,the meaning of the research topic,the structure of the paper,etc.are outlined.Secondly,it summarizes the keytechnologies of carrier aggregation,the characteristics of the application scenarios,analyzes the spectrum resources,and analyzes the performance of multiple carrier aggregation configurations through the existing network conditions,and proposes an optimization evaluation method in actual work.Focus on the implementation of China Unicom's network upgrade construction and optimization plan,and propose specific expansion criteria and deployment strategies for Changchun Unicom.Through the background,capacity and perceived evaluation of the sub-scenarios,the on-site optimization analysis proves the performance improvement effect of carrier aggregation.Through parameter verification,rate analysis,PRB utilization analysis,and MR data analysis,the CA's optimization evaluation method is proposed,and the network performance is improved through actual work optimization.The research results of this paper have been used in practical work and played a good guiding role in CA engineering.