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A cell detection method in LTE system

A cell detection and cell technology, applied in electrical components, wireless communication, etc., can solve the problems of high power consumption and long processing time for cell ID detection, and achieve the goal of reducing computational complexity, reducing ID detection probability, and improving detection success rate. Effect

Active Publication Date: 2017-09-08
RDA CHONGQING MICROELECTRONICS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0010] In order to solve the above problems, the purpose of the present invention is to provide a low-cost LTE cell detection method and device to overcome the problems of long processing time and high power consumption in detecting cell IDs in the prior art

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  • A cell detection method in LTE system
  • A cell detection method in LTE system
  • A cell detection method in LTE system

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Embodiment Construction

[0025] In order to make the purpose, features and advantages of the present invention more comprehensible, the specific implementation manners of the present invention will be described in detail below in conjunction with the accompanying drawings. Apparently, the described embodiments are only some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative efforts belong to the protection scope of the present invention.

[0026] The relevant symbols in the present invention are described, × means multiplying two parameters, * means point multiplying two sequences, and [P:Q] means taking values ​​from P to Q.

[0027] Embodiments of the present invention provide a low-cost LTE cell detection method, such as figure 1 shown, including:

[0028] 301. The received time-domain data RecData is respectively correlated with the local primary sy...

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Abstract

The embodiment of the present invention provides an LTE cell detection method, which uses power sorting to ensure that the cell detected each time is the strongest cell, avoids traversal detection of M suspected synchronous positions, reduces computational complexity, and shortens the processing time of cell detection At the same time, the effectiveness of the detected cell ID is judged, the multipath position of the cell ID is calculated, and the validity of the suspected main synchronization signal position is judged by using the multipath position, so as to reduce the ID detection probability of the false synchronization position, and at the same time, the power value of the detected synchronization position It is updated, and the same-frequency interference elimination is further used to improve the detection success rate of weak cells.

Description

technical field [0001] The present invention relates to a long term evolution system (Long Term Evolution, LTE), in particular to a cell detection method of the LTE system. Background technique [0002] In the LTE system, when the signal quality of a neighboring cell meets the reselection or handover conditions, the user equipment (UserEquipment, UE) needs to search and measure the surrounding neighboring cells, and accurate and fast detection of the neighboring cells is required to complete the reselection or handover prerequisites. [0003] In the LTE system, the cell ID is uniquely determined by the cell group identifier NID1 and the cell group identifier NID2 (cell ID=3×NID1+NID2). The cell group identifier NID2 (NID2=0,1,2) is obtained from the primary synchronization signal (Primary Synchronization Signal, PSS), and the cell group identifier NID1 is obtained from the secondary synchronization signal (Secondary Synchronization Signal, SSS). Each NID2 corresponds to 336...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W24/00
Inventor 胡磊桂竟晶陈恒毅杨恩浩
Owner RDA CHONGQING MICROELECTRONICS TECH CO LTD