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LTE system cell detection method

A cell detection and cell technology, applied in electrical components, wireless communication, etc., can solve the problems of long processing time and high power consumption of cell ID detection, and achieve the effect of reducing ID detection probability, reducing computational complexity, and shortening processing time

Active Publication Date: 2014-06-11
RDA CHONGQING MICROELECTRONICS TECH CO LTD
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  • Abstract
  • Description
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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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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 invention provides an LTE system cell detection method. Power sorting is adopted to ensure that the cell detected each time is the strongest cell, traverse detection on M suspected synchronization positions is avoided, the operation complexity is reduced, and the processing time for cell detection is shortened. Meanwhile, the validity of the ID of a detected cell is judged, the multipath position of the cell ID is calculated, the validity of a suspected primary synchronization signal position is judged according to the multipath position, and the ID detection probability of a false synchronization position is reduced. Moreover, the power value of a detected synchronization position is updated, and same-frequency interference elimination is adopted so as to improve the success rate of weak cell detection.

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 conditions for reselection or handover, the user equipment (User Equipment, UE) needs to search and measure the surrounding neighboring cells, and accurately and quickly detect the neighboring cells 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 by the primary synchronization signal (Primary Synchronization Signal, PSS), and the cell group identifier NID1 is obtained by the secondary synchronization signal (Secondary Synchronization Signal, SSS). Each NID2 corresponds to 336 types Seco...

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Application Information

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Patent Type & Authority Applications(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
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