Simulation drive test method for TD-LTE system

A drive test and simulator technology, applied in electrical components, wireless communication, etc., can solve problems such as difficult problems and complex communication environments, and achieve the effect of improving performance and saving manpower

Active Publication Date: 2014-04-30
CHINA ACADEMY OF INFORMATION & COMM +1
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Problems solved by technology

However, because the outdoor propagation environment is very complex and is affected by different conditions such as

Method used

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  • Simulation drive test method for TD-LTE system
  • Simulation drive test method for TD-LTE system
  • Simulation drive test method for TD-LTE system

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[0019] In order to make the purpose, technical solution and advantages of the present invention clearer, the implementation process and performance analysis of the present invention will be further described in detail below in conjunction with the accompanying drawings and simulation examples.

[0020] The simulation drive test method used in the TD-LTE system of the present invention is: first in the actual TD-LTE network environment, use the drive test terminal to test and count the key parameters on the drive test transmission line: the signal-to-dry ratio SINR and the received power of the reference signal RSRP, and sample and store sampled values ​​at a set cycle. Due to the limitation of the interface rate, the drive test terminal transmits the stored sampling values ​​to the computer, and the computer processes the data to fill the RSRP and SINR between two sampling points with the minimum cycle that the channel simulator can recognize. The computer processes the receiv...

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Abstract

Provided is a simulation drive test method for a TD-LTE system. First, SINR and RSRP of a drive test terminal test and statistics drive test transmission line are used in a practical TD-LTE network environment, sampling is carried out at a set cycle, sampling values are stored, and then the sampling values are transmitted to a computer; the computer processes the sampling values, wherein RSRP and SINR between the two sampling values are filled up at the minimum cycle which can be identified by a channel simulator, and then the channel simulator connected between an indoor base station and a terminal is introduced; an outer field practical transmission line simulation environment is achieved indoors, wherein noise is added into the channel simulator, so that SINR which passes through the channel simulator and SINR which is recorded practically in an outer field are identical or similar in numerical value and changing trend; and then according to reference signal receiving power, output signal power of the channel simulator is controlled, so that indoor testing of the terminal can have the same or similar performance as outer field testing. According to the method, manpower, material resources, financial resources and time cost of outdoor scenario test are greatly saved, problem reappearing is convenient, and a test process is simplified.

Description

technical field [0001] The invention relates to a simulated drive test method for a Time Division Duplex-Long Term Evolution TD-LTE (Time Division-Long Term Evolution) system for drive test data, and belongs to the technical field of wireless communication. Background technique [0002] With the rapid development of the mobile Internet, the focus of the network has gradually shifted from traditional voice services to data services. The capacity of commercial 2G (second generation) and 3G (third generation) wireless communication systems in China has become increasingly saturated, and new technologies are urgently needed to further improve spectrum efficiency and network coverage. At present, many countries in the world have successively launched 4G (fourth generation) commercial services, and my country's communication operators also have deep accumulation in 4G technology. China Mobile has been deeply involved in the solicitation process of 4G technical drafts as early as ...

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Application Information

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IPC IPC(8): H04W24/00H04W24/06
Inventor 张翔李文宇徐菲李星胡泊魏贵明
Owner CHINA ACADEMY OF INFORMATION & COMM
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