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LTE system downlink channel quality monitoring method and device

A downlink and channel quality technology, applied in the field of communication, can solve the problems of complex calculation method and large amount of calculation, and achieve the effect of simple calculation method, low complexity and high throughput requirements

Active Publication Date: 2014-06-18
SPREADTRUM COMM (SHANGHAI) CO LTD
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Problems solved by technology

[0011] The technical problem to be solved by the present invention is to provide a method and device for monitoring the downlink channel quality of the LTE system, so as to overcome the defects of the prior art that the calculation amount is large and the calculation method is complex, which brings higher requirements to the terminal processing

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  • LTE system downlink channel quality monitoring method and device
  • LTE system downlink channel quality monitoring method and device
  • LTE system downlink channel quality monitoring method and device

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Embodiment Construction

[0032] In order to make the above objects, features and advantages of the present invention more comprehensible, specific implementations of the present invention will be described in detail below in conjunction with the accompanying drawings. In the following description, specific details are set forth in order to provide a thorough understanding of the present invention. However, the present invention can be implemented in many other ways than those described here, and those skilled in the art can make similar extensions without departing from the connotation of the present invention. Accordingly, the present invention is not limited to the specific embodiments disclosed below.

[0033] figure 1 It is a schematic flowchart of the method for monitoring the downlink channel quality of the LTE system provided by the embodiment of the present invention. Such as figure 1 shown, including the following steps:

[0034] Step S101 , counting the power of the data-free subcarriers...

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Abstract

The invention relates to an LTE system downlink channel quality monitoring method and device. The method includes the following steps that: the power of data-free sub carriers of primary synchronous signals and auxiliary synchronous signals of an LTE system downlink channel is put into statistics, such that the power of interference noises can be obtained; the power of reference signals of the LTE downlink channel is calculated; the ratio of the power of the reference signals to the power of the interference noises is obtained; and the ratio is compared with a predetermined quality index, such that the quality of the downlink channel can be determined. The LTE system downlink channel quality monitoring method and device provided by the technical scheme of the invention have the advantages of simple calculation and low complexity, and can effectively and timely detect the change of the interference noises of the system downlink channel and can timely monitor the quality of the LTE system downlink channel.

Description

technical field [0001] The present invention relates to the technical field of communications, in particular to a method and device for monitoring the quality of downlink channels of an LTE system. Background technique [0002] The LTE (Long Term Evolution, long-term evolution) project is the evolution of 3G. The LTE system defines FDD (Frequency Division Duplex, frequency division duplex) and TDD (Time Division Duplex, time division duplex). It improves and enhances 3G Air access technology, using OFDM (Orthogonal Frequency Division Multiplexing, Orthogonal Frequency Division Multiplexing) and MIMO (Multiple-Input Multiple-Output, Multiple-Input Multiple-Output) technology as the only standard for its wireless network evolution. The LTE system can increase the coverage and system capacity while increasing the data transmission rate and reducing the system delay, so as to achieve the goals of reducing user fees, operator costs and improving service quality. However, the hig...

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Application Information

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IPC IPC(8): H04W24/08H04B17/00H04B17/309
Inventor 薛丰廷沈旭强
Owner SPREADTRUM COMM (SHANGHAI) CO LTD
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