Research On Path Loss Based On Certain Network Loads At Different Cell Edge Rates

With the development of wireless network communication technologies,the traditional network planning model can no longer meet the actual needs in the current stage of network.Along with the increasing demand of people for network communications,Network communications are being developed by simple communication methods which used to through the telephone and messages tend into the direction of intelligent communication such as web-browsing and video calls.There was a system called LTE(Long Term Evolution)has solved this problem in some ways.As an integral part of the LTE system,the cell edge rate and the maximum path loss have certain reference value for how to achieve optimal network planning.Therefore,it has great practical significance to research the relationship between these two for the actual network planning.The main content of this topic is to research the relationship between cell edge rate and path loss which based on a certain network load.By analyzing the cell network communication characteristics under a certain network load,the relationship model between cell edge rate and path loss is obtained to determine the actual network plan.For this topic,the article mainly did the following works:(1)This article comprehensively compares and analyzes multiple path loss models,determines the path loss model required for the subject called Hata and improves it to complete the path loss model design.(2)There was a large number of data tested on the path loss model in this article and collected information to obtain a semi-empirical parameter list(3)There introduces the detail information about the link budget process under the Hata model in this article,including the uplink budget,downlink budget and control channel coverage,also gives the values of different conditions in the Hata model link budget.(4)This article combines the link budget process with the actual engineering application under the Hata model to derive the relationship between the cell edge rate and the maximum path loss,which obtains the maximum path loss value corresponding to the cell edge rate under this model.Then the value of the maximum path loss is determined by analyzing the value of the correction factor under different circumstances.(5)This article combines the actual base station coverage planning project,using the improved Hata model to scheduling,detecting the performance of each project,verifying the feasibility of the project through the test results.The research of the relationship between cell edge rate and path loss based on certain network load designed in this paper will applied in the subsequent actual network planning process to reduce the complexity in the actual coverage plan.