Load unloading method under non-orthogonal multiple access mechanism

Abstract

The invention discloses a load unloading method under a non-orthogonal multiple access mechanism. The method comprises the steps: judging an unloadable user set according to network parameters such asthe downlink total power and the user minimum data transmission rate based in a scene based on a NOMA mechanism; and on the basis of ensuring the minimum data transmission rate of the active users and the maximum number of the network active users, taking the maximum throughput of the NOMA system as a target to carry out judgment of unloading the users from the unloadable user set. According to the invention, the load unloading method disclosed by the invention effectively guarantees the minimum data transmission rate requirement of the active users under the NOMA mechanism, can obtain the large throughput on the premise that the maximum number of active users is guaranteed, and achieves a dynamic and flexible load unloading scheme.

Description

technical field [0001] The invention relates to the technical field of wireless communication, in particular to a load unloading method under a non-orthogonal multiple access mechanism. Background technique [0002] In the key technology research of the next generation mobile communication, how to improve the spectrum utilization rate of the network is one of the key contents of the wireless communication research. Faced with the limited spectrum utilization of Orthogonal Multiple Access (OMA, Orthogonal Multiple Access) technology, non-orthogonal multiple access technology was proposed to cope with the exponential growth of the number of terminals in the next generation of wireless communication, so as to meet the requirements of Under the premise that the total available spectrum width remains unchanged, the number of network terminal devices is greatly increased and the throughput of the network is improved. However, in the application scenario of non-orthogonal multiple...

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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