A non-orthogonal access optimal decoding sorting uplink transmission time optimization method

Abstract

A non-orthogonal access optimal decoding sorting uplink transmission time optimization method based on linear search, comprising the following steps: (1) given a decoding sorting π m Under the condition of , the optimization problem is described as a non-convex optimization problem; (2) convert the (P1‑m) problem into a (P1‑m‑E) problem equivalently; It is a (P2) problem; a (P2‑Sub) problem is proposed; (3) an algorithm P2‑Algorithm based on linear search is proposed to optimize the overall wireless resource consumption when the upload volume of the smart terminal is given; (4) the algorithm OptOrder is proposed ‑Algorithm finds the optimal decoding order, and the output results are the global minimum overall wireless resource consumption and the global optimal uplink transmission time. The present invention improves system transmission efficiency, saves bandwidth resources, and obtains better wireless network experience quality.

Description

technical field [0001] The invention belongs to the communication field, and relates to a non-orthogonal access optimal decoding sorting uplink transmission time optimization method based on a linear search type. Background technique [0002] Large-scale connectivity adapted to Internet of Things (IoT) applications has been regarded as an important goal of future 5G cellular systems. Non-orthogonal Multiple Access (NOMA) enables a group of smart terminals (Smart Terminal, ST) to simultaneously share the same spectrum channel for transmission, providing an effective way to achieve the goal of spectrum-efficient data transmission. Methods. We consider uplink transmission in a wireless network, where a smart terminal (e.g. a smart watch) sends its data to an access hotspot using NOMA technology. We aim to minimize the overall radio resource consumption, including uplink transmission time and total uplink transmission energy. Contents of the invention [0003] In order to o...

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Problems solved by technology

[0003] In order to overcome the disadvantages of long uplink transmission time and high energy consumption of smart terminals in the prior art, the present invention provides a non-orthogonal access optimal solution based on bisection search that minimizes uplink transmission time and total energy consumption of smart terminals. Optimized decoding and sorting uplink transmission time optimization method, the present invention aims at the difficulty of excessive uplink transmission time, mainly considers the use of non-orthogonal access technology to transmit data, and studies a non-orthogonal access based on linear search Uplink Transmission Time Optimization Method for Optimal Decoding Sorting

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