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A kind of LTE system intra-frequency cell detection method and device

A technology of co-frequency cells and cells, applied in the field of communication, can solve the problems of low detection accuracy and large amount of calculation.

Active Publication Date: 2018-04-27
DATANG LINKTESTER TECH
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  • Claims
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Problems solved by technology

However, this detection method usually directly detects the primary synchronization signal PSS in the time domain, which requires a large amount of calculation and low detection accuracy.

Method used

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  • A kind of LTE system intra-frequency cell detection method and device
  • A kind of LTE system intra-frequency cell detection method and device
  • A kind of LTE system intra-frequency cell detection method and device

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Embodiment Construction

[0074] In order to make those skilled in the art better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described The embodiments are only a part of the embodiments of the present application, but not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the scope of protection of the present application.

[0075] Before describing the embodiments of the present application in detail, reference is made to figure 1 , figure 2 The time-domain frame structure and the mapping position of the cell reference pilot CRS signal on the PRB are respectively shown, and several basic and important concepts that may be involv...

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Abstract

The embodiment of the present application discloses a method for detecting an intra-frequency cell in an LTE system. The method includes: transforming the received first time domain data into frequency domain in sections, performing a first correlation operation on each section of data transformed into the frequency domain with a local reference primary synchronization signal PSS respectively, and transforming the result of the first correlation operation Return to the time domain to obtain the second time domain data; calculate the power of each sample point in the second time domain data to obtain the power delay spectrum PDP of each sample point, and calculate the peak-to-average ratio PMR of each sample point according to the power delay spectrum PDP Determine the primary synchronization signal PSS and its synchronization position in the field according to the point with the largest peak-to-average ratio PMR value; determine the secondary synchronization signal SSS according to the primary synchronization signal PSS and its synchronization position in the field, thereby determining the same frequency community. The embodiment of the present application also discloses an apparatus for detecting an intra-frequency cell in an LTE system. The embodiments of the present application can effectively detect multiple LTE co-frequency cells, and solve the measurement requirements of co-frequency cells covered by the current LTE system wireless network.

Description

technical field [0001] The present application relates to the field of communication technologies, and in particular, to a method and apparatus for detecting intra-frequency cells in an LTE system. Background technique [0002] With the formulation and continuous improvement of the 3GPP LTE standard, the LTE (Long Term Evolution, Long Term Evolution) system has been supported by more and more operators and manufacturers, and has now become the mainstream standard of 4G wireless communication technology, with more than 200 established worldwide. LTE commercial network. Under the active promotion of domestic operators, TD-LTE and FDD LTE commercial networks have been partially opened. In order to make full use of the precious bandwidth resources of LTE, the co-frequency technology has become the most commonly used LTE networking solution. In the initial stage of actual network construction and maintenance, it is usually necessary to measure LTE co-frequency cells, including ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W16/14H04W24/02H04W36/00
Inventor 陈惠锋杜襄南姜韬
Owner DATANG LINKTESTER TECH
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