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Method for LTE (long term evolution) cell verification

A cell verification and cell technology, applied in the field of LTE cell verification, can solve the problem that the measurement cannot be unified with the signal-to-noise ratio channel fading, and achieve the effect of reducing the probability of false alarms and improving the probability of missed detection.

Inactive Publication Date: 2014-11-12
MEDIATEK INC
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  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a method for verifying an LTE cell to solve the problem that the measurement of the algorithm selection in the prior art cannot be unified with the change of the signal-to-noise ratio and the channel fading

Method used

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  • Method for LTE (long term evolution) cell verification
  • Method for LTE (long term evolution) cell verification
  • Method for LTE (long term evolution) cell verification

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Embodiment Construction

[0024] Such as figure 2 As shown, first divide the SSS into two parts, odd and even, according to the sequence numbers of the subcarriers, and perform channel estimation on the odd and even sequences respectively. The method of channel estimation is as follows:

[0025] h ( 2 k ) = r SSS ( 2 k ) S SSS ( 2 k ) h ( 2 ...

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Abstract

The invention discloses a method for LTE (long term evolution) cell verification. The method is characterized by including the steps of performing CHE (channel estimation) by odd subcarrier or even subcarrier of an SSS (secondary synchronization signal) according to result of SSS detection, smoothing, interpolating and extrapolating the channel estimation to acquire a CheSSS; performing CHE of frequency domain by a former RS (received signal) and a latter RS of the SSS, smoothing and interpolating the CHE, and averaging the CHE of the SSS and the CHE of the frequency domain to acquire CheRS; balancing a PSS (primary synchronization signal) by the CheSSS and performing normalization and multi-antenna superposition by corresponding RSSI (received signal strength indication). Measurement of a wrong cell and measurement of a correct cell are separated, and probability of leak detection is not increased as far as possible while probability of false alarm is reduced.

Description

technical field [0001] The invention belongs to the technical field of mobile communication, in particular to an LTE cell verification method. Background technique [0002] LTE (LTE: Long Term Evolution, Long Term Evolution), as the next-generation mainstream communication technology, has the characteristics of high transmission rate, high spectrum utilization rate, and simple receiver. When the UE just accesses a cell or needs to perform a handover, the UE needs to perform a cell search to determine the cell where it is camped or handed over. During the cell search, the UE needs to verify the searched cells to determine which ones are valid. Cells, which are invalid cells. The original verification method generally uses the correlation value of PSS (PSS: Primary Synchronization Signal, primary synchronization signal) or the correlation value of SSS (SSS: Secondary Synchronization Signal, secondary synchronization signal) for verification. The size of the metrics used is d...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W48/16H04L25/02
Inventor 诸烜程单鸣
Owner MEDIATEK INC