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Random access method and device

A random access, random access signal technology, applied in the direction of synchronization device, multiplex communication, wireless communication, etc.

Active Publication Date: 2022-05-10
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the random access preamble in the existing communication protocol is mainly designed for the terrestrial cell, the design of the current random access preamble will hardly meet the communication requirements of the future communication network

Method used

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Embodiment Construction

[0059] The technical solution in this application will be described below with reference to the accompanying drawings.

[0060] The technical solutions of the embodiments of the present application can be applied to various communication systems, for example: global system for mobile communications (GSM) system, code division multiple access (code division multiple access, CDMA) system, wideband code division multiple access (wideband code division multiple access (WCDMA) system, general packet radio service (general packet radio service, GPRS), long term evolution (long termevolution, LTE) system, LTE frequency division duplex (FDD) system, LTE time division duplex (time division duplex, TDD), universal mobile telecommunication system (universal mobile telecommunication system, UMTS), global interconnection microwave access (worldwide interoperability for microwave access, WiMAX) communication system, future fifth generation (5th generation, 5G) system or new Wireless (new ra...

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Abstract

The present application provides a random access method and device, which can improve the detection efficiency of random access signals. The method includes: a terminal device receives a broadcast signal; the terminal device sends a random access signal, and a preamble sequence in the random access signal includes K first symbols and Q second symbols, wherein the first symbol and the second symbol are mutually Different symbols, K and Q are integers greater than or equal to 1, K+Q=N SEQ ,N SEQ The number of symbols included in the preamble.

Description

technical field [0001] The present application relates to a random access method, in particular to a random access method and device. Background technique [0002] In the random access process, the terminal device sends the preamble to the access network device, and the access network device can obtain the uplink timing by detecting the position of the preamble, and send the uplink timing to the terminal device through the timing information. Subsequent communication processes can be performed between the terminal device and the access network device according to the timing information. [0003] Future communication networks, such as the 5th generation mobile communication network (5G), not only need to meet the business needs of various industries, but also need to provide wider business coverage. Satellite communication has the advantages of long communication distance, large coverage area, wide communication frequency and so on. Therefore, the industry is considering in...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W74/00H04W74/08
CPCH04W74/0833H04W74/002H04L27/2613H04L27/2605H04L27/2607H04J13/102H04L27/26132H04L27/2663H04L27/2665H04L27/2675H04L27/2686H04J13/0062H04W56/0015H04B7/1853H04B7/1851H04W74/0841
Inventor 徐晨蕾周建伟罗禾佳王俊
Owner HUAWEI TECH CO LTD
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