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Method and device for measuring LTE uplink signal field strength based on synchronization processing

A technology of synchronization processing and measurement method, applied in synchronization devices, wireless communication, digital transmission systems, etc., can solve the problems of inaccurate baseband synchronization, weak downlink signal, inability to accurately complete uplink synchronization and field strength measurement, etc., to improve accuracy improve performance, solve the effect of changing uplink synchronization position

Active Publication Date: 2018-10-09
WUHAN HONGXIN TECH DEV CO LTD
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Problems solved by technology

[0005] The problem to be solved by the present invention is to provide a technical solution for measuring the field strength of LTE uplink signals based on synchronous processing. Problems with Uplink Synchronization and Field Strength Measurement

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  • Method and device for measuring LTE uplink signal field strength based on synchronization processing
  • Method and device for measuring LTE uplink signal field strength based on synchronization processing
  • Method and device for measuring LTE uplink signal field strength based on synchronization processing

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Embodiment Construction

[0029] The present invention will be described in further detail below through the embodiments in conjunction with the accompanying drawings.

[0030] The present invention provides a method for measuring the field strength of an uplink signal applied to an LTE mobile phone terminal in an LTE system. The main idea is to add an uplink precise synchronization process on the basis of a traditional field strength meter. By performing sliding window decoding on the received data, Correct the starting position of the uplink fixed subframe according to the CRC decoding result and the estimated time offset value to obtain accurate uplink synchronization, enter the uplink RSRP measurement process, obtain the field strength measurement result, and according to the time offset measured on the fixed subframe The value adjusts the starting position of the fixed subframe in real time to maintain uplink synchronization at any time.

[0031] In the present invention, the energy or field stren...

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Abstract

The invention provides a method for measuring LTE uplink signal field strength based on synchronization processing, comprising the steps: a step of baseband synchronization processing, comprising receiving and demodulating downlink signals of an LTE base station, obtaining uplink resource allocation information, cell ID numbers and downlink synchronization initial position by analyzing the downlink signals, and obtaining the coarse synchronization position of the uplink sub-frame according to the uplink and downlink timing relationship; a step of uplink fine synchronization, comprising obtaining the uplink fine synchronization position by adjusting and correcting according to the position of the uplink coarse synchronization, wherein the implementation mode of the adjustment and correctioncomprises performing sliding-window decoding on the received data, correcting the initial position of the uplink fixed sub-frame according to the CRC decoding result and the time offset estimation value to obtain accurate uplink synchronization; a step of uplink field strength measurement, comprising completing calculation and reporting of the reference signal receiving power RSRP at the LTE mobile terminal according to the uplink fine synchronization position; and a step of uplink synchronization maintaining, comprising adjusting the uplink synchronization position in real time to achieve maintaining of the uplink synchronization.

Description

technical field [0001] The invention relates to an uplink synchronization technology in the field of mobile communication, in particular to a technical solution for measuring the field strength of an LTE uplink signal based on synchronization processing. Background technique [0002] The uplink signal field strength measuring instrument is used to measure the uplink signal strength emitted by LTE mobile phones. For the TDD standard, since TD-LTE uses time slot division to distinguish the transmission time of uplink signals and downlink signals, the existing TD-LTE uplink signal field strength meter must detect the downlink signal of the base station and obtain the time of uplink transmission of the mobile phone. slot synchronization to realize the field strength measurement of the uplink signal of TD-LTE mobile phones; for the FDD standard, FDD-LTE transmits and receives on two symmetrical frequency channels separated (uplink and downlink frequency interval 190MHz), the exis...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W24/08H04W56/00H04L1/00
CPCH04L1/0061H04W24/08H04W56/0005
Inventor 倪霞邓风李辉
Owner WUHAN HONGXIN TECH DEV CO LTD
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