Differential new user selection access method applicable to non-orthogonal multi-access system

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, a 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...

AI Technical Summary

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

Images