Non-orthogonal access downlink transmission time optimization method based on binary search mode

Abstract

The invention provides a non-orthogonal access downlink transmission time optimization method based on a binary search mode. The method comprises the following steps: (1) there are I mobile users within the coverage of a base station in total, while the quality of service of the mobile users is met, a downlink transmission time of the base station and the total energy consumption of the base station are minimized in the case that the downloading amounts (the formula is described in the specification) of the mobile users are given, wherein the optimization problem is described as a non-convex optimization problem; (2) a DDRCM problem is equivalently converted into a DDRCM-E problem, and the DDRCM-E problem is equivalently converted into a P1 problem; and (3) in order to judge whether the P1problem is feasible under given theta value, a P2 problem is proposed; based on the binary search method, the downlink resource consumption (the downlink transmission time and the total energy consumption of the base station) is optimized in the case that the downloading amounts (the formula is described in the specification) of the mobile users are given. By adoption of the non-orthogonal accessdownlink transmission time optimization method provided by the invention, the downlink 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 binary search formula. 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 access technology to allow 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. Contents of the invention [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 based on a binary search method that minimizes the downlink transmission time and the t...

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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 based on a binary search method that minimizes the downlink transmission time and the total energy consumption of the base station Time 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 binary search

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