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Preamble detection method and device

A detection method and technology of preamble, applied in the field of communication, can solve the problems of low success rate of preamble detection, affecting the random access performance of the system, etc., so as to improve the random access performance, reduce the calculation overhead, and reduce the amount of data. Effect

Active Publication Date: 2022-04-29
NEW H3C TECH CO LTD
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Problems solved by technology

However, in practical applications, it is found that the detection success rate of the preamble is still not high, which directly affects the random access performance of the system.

Method used

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  • Preamble detection method and device
  • Preamble detection method and device
  • Preamble detection method and device

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[0041] Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated. The implementations described in the following exemplary embodiments do not represent all implementations consistent with this application.

[0042] The terms used in the embodiments of the present application are only for the purpose of describing specific embodiments, and are not intended to limit the embodiments of the present application. The singular forms of "a", "said" and "the" used in the embodiments of the present application are also intended to include plural forms, unless the context clearly indicates otherwise. It should also be understood that the term "and / or" as used herein refers to and includes any and all possible combinations of one or more of the a...

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Abstract

The invention provides a lead code detection method and device. In the method, a base station determines to-be-merged frequency domain data of each first symbol from a user terminal, each first symbol being used for transmitting the same lead code; for each preset number of first symbols, performing coherent combination on the to-be-combined frequency domain data of the preset number of first symbols to obtain combined frequency domain data of second symbols; and processing based on the frequency domain data of all the second symbols obtained after combination to detect the lead code. According to the invention, the random access performance of the system can be effectively improved.

Description

technical field [0001] The present application relates to the field of communication technologies, and in particular to a preamble detection method and device. Background technique [0002] In the Third Generation Partnership Project (English: 3 rd In the new air interface (English: New Radio, abbreviation: NR) system stipulated by the Generation Partnership Project (abbreviation: 3GPP), the physical random access channel (English: Physical Random-Access Channel, abbreviation: PRACH) is used to carry the preamble sent by the user terminal (English: Preamble ID), the base station processes the received PRACH signal and demodulates (detects) the Preamble ID carried in the signal to realize user terminal access. [0003] 3GPP defines 14 PRACH formats to support system requirements in different scenarios. These formats can be divided into long format and short format according to the length of a single symbol. Among them, the long format (0 / 1 / 2 / 3) mainly supports far coverage...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W74/00H04W74/08
CPCH04W74/004H04W74/0833H04W74/0866H04W74/002
Inventor 石宇
Owner NEW H3C TECH CO LTD
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