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Method and device for cell measurement in communication terminal and long term evolution system

A long-term evolution system and cell measurement technology, which is applied in the communication field, can solve problems affecting the accuracy of measurement, and achieve the effect of reducing the impact and improving the accuracy of cell measurement

Active Publication Date: 2017-08-08
SPREADTRUM COMM (TIANJIN) INC
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  • Description
  • Claims
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Problems solved by technology

[0006] The problem to be solved by the present invention is that the cell measurement in the existing long-term evolution system may affect the measurement accuracy due to noise interference

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  • Method and device for cell measurement in communication terminal and long term evolution system
  • Method and device for cell measurement in communication terminal and long term evolution system
  • Method and device for cell measurement in communication terminal and long term evolution system

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Embodiment Construction

[0040] 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.

[0041] According to the 3rd Generation Partnership Project (3GPP, 3rd Generation Partnership Project) TS36.214 specification description, in the LTE system, there are three measurement contents: 1) Reference Signal Received Power (RSRP, Reference Signal Receiving Power), which is defined as Linear ...

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Abstract

A method and device for cell measurement in a communication terminal and a long-term evolution system, the method comprising: performing first time-frequency transformation on symbols with a cell-specific reference signal (CRS) to obtain first frequency domain data, and selecting a cell to be measured from the first time-frequency transform. The third frequency domain data at the CRS position and descramble the CRS in it to obtain the channel estimation result; put the channel estimation result back to the corresponding position in the first frequency domain data, and set the frequency domain data at other positions to zero to generate the third frequency domain data. Four-frequency domain data and frequency-time transform to obtain the channel impulse response; compare the time domain data in the channel impulse response with the preset threshold value, clear the time domain data less than the preset threshold value; The second time-frequency transform is performed on the channel impulse response of the channel impulse response to obtain the second frequency domain data, and the fifth frequency domain data of the cell to be measured at the CRS position is selected from the data, and the received power of the reference signal is obtained by calculating the CRS therein. The technical solution can effectively reduce the influence of noise interference on cell measurement accuracy.

Description

technical field [0001] The present invention relates to the field of communication technologies, in particular to a communication terminal and a method and device for cell measurement in a long-term evolution system. Background technique [0002] The development of mobile communication has transitioned from the initial voice service to voice service plus data service, and the data service has shown an obvious acceleration state. Now more and more users join the third generation mobile communication (3G) system network. For a better mobile data experience, the transmission capability of the 3G system has gradually become insufficient, so the Long Term Evolution system (LTE, Long Term Evolution) of the 3G system came into being. LTE improves and enhances 3G air access technology, adopts Orthogonal Frequency Division Multiplexing (OFDM, Orthogonal Frequency Division Multiplexing) technology and Multiple-Input Multiple-Output (MIMO, Multiple-Input Multiple-Output) technology as ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W24/08
Inventor 李涵闫发军董霄剑
Owner SPREADTRUM COMM (TIANJIN) INC