Non-orthogonal access uplink transmission time optimization method based on particle swarm optimization

Abstract

A non-orthogonal access uplink transmission time optimization method based on a particle swarm optimization comprises the following steps: (1) on the basis of a total of I mobile users under the coverage of the base station, providing a problem that minimizes the uplink transmission time of the mobile users and the total energy consumption of all the mobile users while satisfying the service quality of the mobile users, wherein the optimization problem is described as a non-convex optimization problem; (2) equivalently converting the ORRCM problem to the ORRCM-E problem; and (3) based on the particle swarm optimization, optimizing the overall wireless resource consumption (uplink transmission time and total energy consumption of all mobile users) in the case that the upload volume (FORMULAreferred) of the mobile users is given. The invention provides a non-orthogonal access uplink transmission time optimization method based on a particle swarm optimization that minimizes the uplink transmission time and the total energy consumption of all the mobile users. The technical effects of the invention are mainly as follows: 1, for the uplink as a whole, the non-orthogonal access technology is used to greatly improve the system transmission efficiency; 2, for the uplink as a whole, the non-orthogonal access technology is used to greatly save bandwidth resources; and 3, for mobile users, the non-orthogonal access technology is used to obtain a better experience quality of the wireless network.

Description

technical field [0001] The invention belongs to the communication field, and relates to a non-orthogonal access uplink transmission time optimization method based on a particle swarm algorithm. 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 disadvantages of long uplink transmission time and high total energy consumption of all users in the prior art, the present invention provides a non-orthogonal access uplink transmission based on particle swarm optimization algorithm that minimizes uplink transmission time and total energy consumpti...

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Problems solved by technology

[0003] In order to overcome the disadvantages of long uplink transmission time and high total energy consumption of all users in the prior art, the present invention provides a non-orthogonal access uplink transmission based on particle swarm optimization algorithm that minimizes uplink transmission time and total energy consumption of all users Time optimization method, the present invention aims at the difficulty of too long uplink transmission time, mainly considers the use of non-orthogonal access technology to transmit data, and studies a non-orthogonal access uplink transmission time optimization method based on particle swarm optimization

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