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A method to quickly determine whether a cell supports emtc

Active Publication Date: 2021-11-16
CHONGQING UNIV OF POSTS & TELECOMM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method of operation is time-consuming and increases the power consumption of eMTC

Method used

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  • A method to quickly determine whether a cell supports emtc
  • A method to quickly determine whether a cell supports emtc
  • A method to quickly determine whether a cell supports emtc

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Experimental program
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Embodiment Construction

[0034] The technical solutions in the embodiments of the present invention will be described in detail below with reference to the drawings in the embodiments of the present invention. The described embodiments are merely a part of the embodiments of the invention.

[0035] The technical solution to solve the above technical problem is:

[0036] According to the repetitive transmission characteristics in the physical broadcast channel (PBCH) in the EMTC system, the present invention proposes a method of rapid determining whether the cell supports the EMTC function. The process is after the EMTC terminal is turned on, first perform frequency blind sweep, search for a list of signals, and then operate a secondary synchronous search (referred to as: PSS / SSS) one by one on the frequency list with signals, if effective The PSS / SSS synchronization signal, then two PBCH repetitive signals are extracted in the corresponding location, and the correlation calculation is performed. If th...

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Abstract

The present invention requests protection of a method for quickly judging whether the cell supports the eMTC function. The process is that after the eMTC terminal is turned on, it first performs a frequency blind scan to search for a frequency point list with signals, and then performs a primary and secondary synchronization search (PSS / SSS for short) one by one on the frequency list with signals. PSS / SSS synchronization signal, then extract two PBCH repeated signals in the corresponding position, and perform correlation calculation, if there is an obvious correlation peak, it indicates that the cell corresponding to the frequency point supports eMTC service, and finally perform normal operation on the cell The PBCH interpretation process. The present invention accelerates the cell search speed of the eMTC terminal and saves power consumption of the terminal.

Description

Technical field [0001] The present invention belongs to the field of communications systems IOT, given the rapid method of things terminal determines whether the cell supports eMTC. Background technique [0002] With the development of mobile communication technology, people and objects made thereof connected to the actual needs of specific, mainly based on actual application scenarios have different requirements three dimensions, i.e., low cost, low power consumption and wide coverage. In the Third Generation Partnership Project (referred to as: 3GPP) organization is also for the Internet of Things has been systematically studied and provides a complete standards, in order to promote the development of the Internet of Things industry. [0003] In the 3GPP standard, the R8 version, using a transmission rank 1 (abbreviation: CAT1) although it is fully compatible terminal CAT1 long term evolution (abbreviation: 4G LTE) supports networking, version, but the power consumption and the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W24/08H04W48/10H04W52/02
CPCY02D30/70
Inventor 段红光郑建宏罗一静肖子荐
Owner CHONGQING UNIV OF POSTS & TELECOMM