Load Estimation & Optimization Of TD-LTE Network Based On Capacity Awareness

TD-LTE network planning and construction continue to deepen and drive the rapid development of new users and mobile Internet services,followed by the increasements of network carried capacity,the burdens of network loads become more normal in the long period.With the explosive growth of users and services,the capacity of base stations in hot spots will inevitably be overloaded.The wireless coverage of TD-LTE base stations and the allocation of single carrier resources will obviously not support the demand of high-frequency services.Therefore,when the capacity exceeds the maximum load,what measures should be taken to meet the needs of users and how to maximize the use of network resources become the focus of the telecom enterprise network department One of the most important subjects of the door.Aiming at the problem of large capacity of TD-LTE network,this thesis analyzes various factors that affect the capacity of TD-LTE network,draws up relevant solutions and puts them into practice,main parts are as follows:(1)This thesis briefly introduced the principles of TD-LTE network and the key technologies concerned,including OFDM,smart antenna,MIMO,etc.,then analyzed the structure and capacity calculation of TD-LTE network,and evaluated the indexes of capacity performance of TD-LTE.(2)Based on user capacity awareness,this thesis induced several TD-LTE network capacity indicators,then defined LTE large capacity scenarios,analyzed the hot spots where LTE large capacity occurs,and proposed optimization ideas that are identification,perception,early warning,prediction,identification,supportments and other high load optimization.(3)Large capacity cell seriously affects the use perception of network users.To ensure good user perception,an effective overload network optimization scheme based on capacity perception is provided.Large capacity cell is monitored based on TD-LTE large capacity positioning and identification,and then the capacity overload cell is solved by means of capacity expansion optimization.The coverage structure is optimized by RF parameter optimization adjustment To construct and distribute users;to improve the throughput of the cells with capacity overload,the method of cell division is adopted;for the cells with capacity overload of single layer network structure,the multi frequency network structure is adopted to share the load;for the cells with high CPU load of the base station,the single board CPU can be used to expand the capacity to avoid congestion.Novel functions such as carrier aggregation and 3D-MIMO are applied to realize load balancing.Finally,according to the proposed scheme applied to the Optimization Practice of largecapacity cell,and collect and compare the effect of both before and after the implementated scheme,so the obvious improvments of the network capacity and quality are proved by several typical mobile communicaton projects.