Preamble detection method and device

A detection method and preamble technology, applied in the field of communication, can solve problems such as low success rate of preamble detection and affect random access performance of the system, and achieve the effects of improving random access performance, reducing computing overhead, and compressing noise

Active Publication Date: 2022-07-29
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

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Embodiment Construction

[0041] Exemplary embodiments will be described in detail herein, examples of which are illustrated in the accompanying drawings. Where the following description refers to the drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated. The implementations described in the illustrative examples below are not intended to represent all implementations consistent with this application.

[0042] 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. As used in the embodiments of this application, the singular forms "a," "the," and "the" are intended to include the plural forms as well, unless the context clearly dictates otherwise. It will 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 associated listed i...

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Abstract

The present application provides a method and device for detecting a preamble. In this method, the base station determines the frequency domain data to be combined for each first symbol from the user terminal, wherein each first symbol is used to transmit the same preamble; for every preset number of first symbols, the preamble Suppose that the frequency domain data of a number of first symbols to be combined are coherently combined to obtain the frequency domain data of the combined second symbol; and perform processing based on the frequency domain data of all the second symbols obtained after the combination to detect the preamble code. The present application can effectively improve the random access performance of the system.

Description

technical field [0001] The present application relates to the field of communication technologies, and in particular, to a method and device for detecting a preamble. Background technique [0002] in the Third Generation Partnership Program (English: 3 rd In the New Radio (English: New Radio, abbreviation: NR) system specified by the Generation Partnership Project, abbreviation: 3GPP), a 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, long format (0 / 1 / 2 / 3) mainly supports far coverage scena...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W74/00H04W74/08
CPCH04W74/004H04W74/008H04W74/0833H04W74/0866
Inventor 石宇
Owner NEW H3C TECH CO LTD
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