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Method and device for generating sequences

A sequence and communication device technology, applied in the field of communication, can solve problems such as uncontrolled DMRS sequence correlation and increased communication interference

Active Publication Date: 2022-02-25
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The correlation of DMRS sequences generated by different pseudo-random sequences will not be controlled, making non-orthogonal DMRS sequences increase communication interference

Method used

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  • Method and device for generating sequences
  • Method and device for generating sequences
  • Method and device for generating sequences

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Embodiment Construction

[0060] The embodiment of the present application may be applied to a scenario of time division duplexing (time division duplexing, TDD), and may also be applicable to a scenario of frequency division duplexing (frequency division duplexing, FDD).

[0061] Embodiments of the present application are described based on a scenario of a fifth generation (5th generation, 5G) NR communication network in a wireless communication network. It is suitable for grant-free large-scale connection scenarios in the connected state. It needs to support massive data access and a certain set of reference signal sequences. It can also be applied to the idle state or inactive state random access process. For example, if the leading resource only establishes a mapping relationship with one or less data resources and needs to support more terminal devices, determine group of leading sequences. When the grant-free transmission is applied to the idle state or the inactive state, that is, when the rand...

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Abstract

The application discloses a method and device for generating a sequence, which relate to the communication field. The method for generating the sequence includes: determining the first initialization value of the target pseudo-random sequence from the first set, wherein the length of the binary sequence of the first initialization value is N, and the first set includes initialization values ​​of M pseudo-random sequences, each The initialization value of a pseudo-random sequence is greater than or equal to 0 and less than or equal to 2 N Integer of ‑1, M<2 N , M and N are positive integers; a target pseudo-random sequence is generated according to the first initialization value.

Description

technical field [0001] The present application relates to the communication field, and in particular to a method and device for generating a sequence. Background technique [0002] The fifth generation (5th generation, 5G) communication is a popular standard for the next generation of cellular communication networks, including enhanced mobile broadband (eMBB), ultra reliable and low latency communication (uRLLC) and massive machine Three major scenarios of massive machine typecommunication (mMTC). The eMBB scenario emphasizes high throughput, the uRLLC scenario emphasizes high reliability and low latency, and the mMTC scenario emphasizes massive connections. [0003] In the mMTC scenario, there will be a large number of terminal devices that need to perform uplink communication with network devices. For uplink communication, the network device needs to configure different demodulation reference signals (demodulation reference signal, DMRS) for different terminal devices, a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L27/26H04L5/00
CPCH04L27/2613H04L5/0048
Inventor 张蕾王磊陈雁
Owner HUAWEI TECH CO LTD