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A method for measuring received signal power in a cell

A technology for receiving signal power and measurement methods, applied in wireless communication, transmission monitoring, advanced technology, etc., can solve problems such as timing deviation, frequency deviation, and difficulty in obtaining measurement results, and achieve the effect of reducing implementation costs and improving measurement accuracy

Active Publication Date: 2019-11-19
CHONGQING UNIV OF POSTS & TELECOMM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The problem with existing cell received signal power measurement solutions is that it is difficult to obtain accurate measurement results due to the influence of timing deviation and frequency deviation in the scenario of synchronization deviation

Method used

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  • A method for measuring received signal power in a cell
  • A method for measuring received signal power in a cell
  • A method for measuring received signal power in a cell

Examples

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specific Embodiment 1

[0054] This embodiment is a preferred implementation manner of the method for measuring the received signal power of a cell according to the present invention.

[0055] see figure 1 ,like figure 1 As shown, the cell received signal power measurement method in this embodiment includes:

[0056] S101. The terminal receives sample-level synchronized data at the frequency point of the cell to be tested;

[0057] Determine the frequency point of the cell to be measured according to the measurement task, and after completing the sample-level synchronization, obtain the starting point of the OFDM symbol containing the Cell RS, receive a total of 2048 samples, and obtain the received data;

[0058] Wherein, the sample-level synchronization can be implemented by using various sample-level synchronization methods in the prior art, which is not specifically limited in the present invention;

[0059] Perform Fourier transform on the received data to obtain frequency domain received data;...

specific Embodiment 2

[0097] This embodiment is another preferred implementation manner of the method for measuring the received signal power of a cell according to the present invention.

[0098] see figure 2 ,like figure 2 Shown, the measuring method of the present embodiment comprises:

[0099] S201. The terminal receives sample-level synchronized data at the frequency point of the cell to be tested;

[0100] Determine the frequency point of the cell to be measured according to the measurement task, and after completing the sample-level synchronization, obtain the starting point of the OFDM symbol containing the Cell RS, receive a total of 2048 samples, and obtain the received data;

[0101] Wherein, the sample-level synchronization can be implemented by using various sample-level synchronization methods in the prior art, which is not specifically limited in the present invention;

[0102] Perform Fourier transform on the received data to obtain frequency domain received data;

[0103] S20...

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Abstract

The invention discloses a cell received signal power measurement method, comprising the steps that a terminal receives data after sample point level synchronization is carried out, at a frequency point of a to-be-tested cell; received training sequence frequency domain data and received training sequence time domain data are acquired from the received data; local training sequence frequency domaindata is divided by the received training sequence frequency domain data, thereby obtaining a frequency domain specific value sequence; the local training sequence time domain data is divided by the received training sequence time domain data, thereby obtaining a time domain specific value sequence; sliding autocorrelation is carried out on the frequency domain specific value sequence to acquire afrequency domain measurement power; the sliding autocorrelation is carried out on the time domain specific value sequence to acquire a time domain measurement power; and the relatively great value inthe frequency domain measurement power and the time domain measurement power is taken as a cell received signal power. According to the technical scheme provided by the invention, influences of timing offset and frequency offset on cell received signal power measurement can be effectively reduced, and the measurement precision is improved.

Description

technical field [0001] The invention relates to the technical field of communication, in particular to a method for measuring the received signal power of a cell in a cellular wireless communication system. Background technique [0002] In the mobile communication system, the measurement of the received signal power of the cell is a crucial technology, especially in the cellular communication system, in order to perform radio resource management actions such as cell selection, cell reselection, and cell handover, it is necessary to monitor the cell The received signal strength is measured. [0003] In different communication systems, measurement objects and names are different, but there are a large number of measurement objects that essentially only measure the received signal power of the cell to be measured and do not include noise and interference. For example, received signal code power (RSCP for short) in Time Division Synchronous Code Division Multiple Access (abbrev...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W24/02H04W24/08H04B17/327
CPCH04B17/327H04W24/02H04W24/08Y02D30/70
Inventor 李铮欧阳卫华蒋文豪
Owner CHONGQING UNIV OF POSTS & TELECOMM
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