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Cell evaluation method and device

A technology in a cell and area, applied in the field of communication, can solve problems such as inconsistent simulation results

Active Publication Date: 2015-03-18
CHINA MOBILE GROUP DESIGN INST
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Problems solved by technology

In this case, it will cause serious discrepancies between the simulation results and the actual situation.

Method used

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  • Cell evaluation method and device
  • Cell evaluation method and device

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Embodiment Construction

[0048] In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, a detailed description will be given below in conjunction with the accompanying drawings and specific embodiments.

[0049] Such as figure 1 As shown, a cell evaluation method applied to a network simulation model includes:

[0050] Step 1. Construct a channel matrix for the area to be tested in the simulation model; wherein, the channel matrix is ​​composed of a sub-matrix corresponding to each transmit antenna in a downlink cell, the downlink cell covers the area to be tested, and each sub-matrix includes The signal impulse response of the corresponding transmitting antenna to each grid in the area to be measured;

[0051] Step 2: Determine the characteristic solution of the channel matrix, and obtain a non-zero ratio of the characteristic solution;

[0052] Step 3: Obtain the signal-to-noise ratio of the area to be tested;

[0053] Step 4: Determine the ...

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Abstract

The invention discloses a cell evaluation method and device. The cell evaluation method and device are applied to a network simulation model. The method comprises the steps of constructing a channel matrix for a region to be tested in the simulation model, wherein the channel matrix consists of submatrices corresponding to each transmitting antenna in a downlink cell, the downlink cell covers the region to be tested and each submatrix comprises signal impact responses caused by the corresponding transmitting antennas to each grid in the region to be tested; determining characteristic solutions of the channel matrix and obtaining the non-zero proportion of the characteristic solutions; acquiring signal-to-noise ratio of the region to be tested; determining the transmission mode of the region to be tested according to the non-zero proportion of the characteristic solutions and the signal-to-noise ratio. Compared with the prior art, the scheme provided by the invention further considers the signal impact response caused by each grid to each transmitting antenna; since the accuracy is extremely high, the fading phenomenon of channels in a small range can be reflected, thus the transmission mode of the cell to be tested can be more accurately determined and the simulation model can simulate the self-adaption of the transmission mode of systems such as LTE (Long Term Evolution) systems.

Description

Technical field [0001] The invention relates to the field of communications, and provides a cell evaluation method and device. Background technique [0002] At present, the most effective way to plan a communication network is to establish a network simulation model, find out the problems in network construction through the network simulation model, and solve them in practice. The 3GPP protocol defines a total of 9 transmission modes in the LTE system, among which TM3 (transmission mode 3) and TM8 (transmission mode 8) are dual-stream transmission modes. Dual-stream transmission (multiplexing) can greatly improve the transmission efficiency of the LTE system, but dual-stream transmission can only be practical when the wireless environment is good enough and the channel correlation is low, otherwise it will cause the system block error rate (BLER) Increase, but reduce the transmission efficiency of the system. Based on the above reasons, the transmission mode adaptive technology...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W16/28H04L25/02
CPCH04W24/06
Inventor 孙浩董江波陈燕雷刘娜方媛韩云波刘玮李楠高鹏
Owner CHINA MOBILE GROUP DESIGN INST
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