A Load Offloading Method Under Non-Orthogonal Multiple Access Mechanism

Abstract

The invention discloses a load unloading method under a non-orthogonal multiple access mechanism. Based on the scenario under the NOMA mechanism, the user set that can be unloaded is judged according to network parameters such as the total downlink power and the minimum data transmission rate of the user, and in On the basis of ensuring the minimum data transmission rate of active users and maximizing the number of active users in the network, the judgment of offloading users is made from the set of offloadable users with the goal of maximizing the throughput of the NOMA system. The load unloading method of the present invention effectively guarantees the minimum data transmission rate requirement of active users under the NOMA mechanism; the load unloading method can obtain a relatively large throughput under the premise of ensuring the maximum number of active users, and realizes a dynamic and flexible load unloading scheme .

Description

Technical field [0001] The present invention relates to wireless communication technologies, and in particular to a load shedding method in a non-orthogonal multiple access scheme. Background technique [0002] In the key technology of next generation mobile communications research, how to improve the spectrum utilization of the network is one of the key elements of wireless communications research. Face orthogonal multiple access (OMA, Orthogonal Multiple Access) technology spectrum utilization is limited, non-orthogonal multiple access techniques have been proposed to deal with the number of next generation wireless communication terminal exponentially, to meet the greatly increasing the number of total available network terminating device and improve the throughput of the network without changing the spectral width. However, in non-orthogonal multiple access technology application scenario, when the total active power reduction or may cause network overload occurs overload phe...

AI Technical Summary

Problems solved by technology

[0003] The existing non-orthogonal multiple access technology-based load offloading method mainly aims at maximizing network throughput for user scheduling, resulting in a significant reduction in the number of active users in the network, which is not suitable for next-generation mobile communication networks Features of coexistence of ultra-large-scale end users, such as the Internet of Things (IoT, Internet of Things), etc.

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