Non-orthogonal access downloading-duration transmission time optimization method based on linear search

Abstract

The invention discloses a non-orthogonal access downloading-duration transmission time optimization method based on linear search. The method comprises the following steps that (1), totally I mobile users exist in a coverage range of a base station, an optimization problem of minimizing the downloading-duration transmission time of the base station and the total energy consumption of the base station is provided under the condition that the service of quality of the mobile users is satisfied and the downloading quantity {S <req> } of the mobile users is preset, wherein the I is an elementof a set J, and the optimization problem is described as a non-convex optimization problem; (2), a DDRCM (Downloading-Duration Resource Consumption Minimization) problem is equivalently converted intoa DDRCM-E problem, and the DDRCM-E problem is equivalently converted into a P1 problem; and (3), in order to judge whether the P1 problem is feasible or not under the condition that a theta value ispreset, a P2 problem is provided, and on the basis of the linear search method, and under the condition that the downloading quantity {S <req> } of the mobile users is preset, the downloading-duration resource consumption is optimized, wherein the I is the element of the set J. According to the method, the downloading-duration transmission time and the total energy consumption of the base station are minimized.

Description

technical field [0001] The invention belongs to the communication field, and relates to a non-orthogonal access downlink transmission time optimization method based on a linear search type. Background technique [0002] The rapid development of mobile Internet services has caused enormous traffic pressure on the cellular wireless access network. Due to limited wireless resources, using non-orthogonal multiple access technology to enable mobile users to share the same channel at the same time provides an effective method for wireless access to achieve ultra-high throughput and large-scale connections in the future 5G network. We aim at the transmission process of the data corresponding to the mobile user sent by the base station. We propose a non-orthogonal access downlink transmission time optimization method based on linear search. Contents of the invention [0003] In order to overcome the shortcomings of the prior art that the downlink transmission time is long and th...

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Problems solved by technology

[0003] In order to overcome the shortcomings of the prior art that the downlink transmission time is long and the total energy consumption of the base station is large, the present invention provides a non-orthogonal access downlink transmission time based on linear search that minimizes the downlink transmission time and the total energy consumption of the base station Optimization method, the present invention aims at the difficulty of excessive downlink transmission time, mainly considers the use of non-orthogonal access technology to transmit data, and studies a non-orthogonal access downlink transmission time optimization method based on linear search

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