Non-Orthogonal Multiple Access Layer Selection for Base Station Scheduling
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Solution Overview
Problem
In non-orthogonal multiple access systems, the process of determining the layer on which a signal is transmitted to a terminal device increases the burden on both the base station and radio resources, leading to inefficiencies in scheduling.
Innovation Solution
An apparatus and method that select a frequency band and layer for non-orthogonal multiple access transmission to a terminal device, with a notification unit informing the terminal device of the selected band and layer, thereby reducing scheduling burdens.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the layer is decided each time a signal is transmitted, then the terminal device can correctly receive the signal, but the processing burden of the base station increases
Solution Approach 1:
The base station determines the layer assignment in advance and notifies the terminal device before signal transmission. This preliminary action eliminates the need for real-time layer decision-making during each transmission, reducing the base station's processing burden while ensuring the terminal device can correctly receive and decode signals on the predetermined layer
2Reliability
If the terminal device is notified of the layer information, then the terminal device can correctly decode the signal, but radio resources are wasted
Solution Approach 1:
The layer information is extracted and notified only to the specific terminal device that requires it, rather than being broadcast to all terminal devices. This selective notification approach ensures that the terminal device can correctly decode the signal while minimizing the consumption of radio resources by avoiding unnecessary notifications to other devices
Data Source
AI summary
[Object] To further reduce a burden of scheduling in non-orthogonal multiple access.[Solution] Provided is an apparatus including: a selection unit configured to select a frequency band to which non-orthogonal multiple access is applied and at least one layer among a plurality of layers that are to be multiplexed in the frequency band for the non-orthogonal multiple access, as a band and a layer to be used for transmission to a terminal device; and a notification unit configured to notify the terminal device of the frequency band and the at least one layer.