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New User Differential Selection Access Method Applicable to Non-orthogonal Multiple Access System

A technology of non-orthogonal multiple access and access method, applied in the field of new user differential selection access

Inactive Publication Date: 2019-03-08
HARBIN INST OF TECH
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  • Claims
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Problems solved by technology

The new user access scheme under the non-orthogonal system cannot directly transplant the scheme under the orthogonal system. It is necessary to propose a new user differential selective access scheme suitable for the non-orthogonal multiple access system to meet the requirements of the future 5G new user access scheme. need

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specific Embodiment approach 1

[0040] Specific implementation mode 1. Combination Figure 1 to Figure 4 To illustrate the specific implementation mode, the new user access method under the non-orthogonal multiple access system proposed by this patent is mainly divided into the following steps:

[0041] Step 1: Establish an information resource pool for full-band candidate user sets

[0042] The entire frequency band B is divided into S sub-bands, and each sub-band multiplexes N users. In order for new access users to conveniently access the sub-bands that meet the application criteria, it is necessary to first establish the candidate user set information for each sub-band on the entire frequency band resource pool.

[0043] The information resource pool of the candidate user set is that the candidate users in each sub-band put their own channel conditions and the number of the sub-band they belong to in a memory, and sort by the size of the sub-bands. The establishment of the resource pool saves access ti...

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Abstract

The invention provides a differential new user selection access method applicable to a non-orthogonal multi-access system, and relates to differential new user selection access technology applicable to non-orthogonal multi-access systems. The differential new user selection access method is used for enabling new users in the non-orthogonal multi-access system to better access the network. The method comprises the following steps: a first step, establishing an information resource pool of a full-band candidate user set; a second step, selecting sub-bands which satisfy bandwidth requirements; a third step, sequentially calculating differences of signal to interference plus noise power ratios; a fourth step, calculating a ratio A<l> of the number of users, satisfying preset standards, of each sub-band to the total number of candidate users of the sub-band, and sorting the ratios A<l> from small to large; a fifth step, carrying out selection according to the expression described in the specification; and a sixth step, carrying out non-orthogonal coding on the new access user information and other candidate user information through superposition coding, and conducting signal transmission. The differential new user selection access method provided by the invention is applicable to the differential new user selection access of the non-orthogonal multi-access system, and can satisfy the demand of a 5G new user access solution in the future.

Description

technical field [0001] The invention relates to a new user differential selection access technology applicable to a non-orthogonal multiple access system (NOMA, Non-Orthogonal Multiple Access). Background technique [0002] With the development of mobile communication technology today, spectrum resources are becoming increasingly tight. At the same time, in order to meet the rapid growth of mobile service requirements, people have begun to look for new mobile communication technologies that can not only meet user experience requirements but also improve spectrum efficiency. In this background, non-orthogonal multiple access technology (NOMA, Non-Orthogonal Multiple Access) has been proposed. [0003] The basic idea of ​​non-orthogonal multiple access technology (NOMA, Non-Orthogonal Multiple Access) is to send user information in a non-orthogonal manner at the transmitter, and actively introduce interference information, which is mainly implemented by superposition coding (...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L27/26
CPCH04L27/2601
Inventor 孟维晓张德坤于启月
Owner HARBIN INST OF TECH
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