MUST Power Ratio Allocation for Base Station Throughput
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Solution Overview
Problem
In LTE or LTE-A communications systems, the utilization of time-frequency resources is low due to the orthogonal frequency division multiple access (OFDMA) method, limiting overall transmission rates, and existing power ratio settings for multi-user equipment superposition transmission (MUST) are inflexible, restricting performance gains.
Innovation Solution
A method is introduced to determine and utilize multiple power ratio values for near and far user equipment in MUST systems, allowing for flexible power allocation based on composite constellation points in a constellation diagram with 1024 grid points at intervals of 1, rather than the traditional 256 grid points at intervals of 2, enabling more precise power ratio settings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If orthogonal frequency division multiple access (OFDMA) manner is used, then simple reception on user equipment side is achieved, but utilization of time-frequency resources is low
Solution Approach 1:
The patent applies dynamic power allocation in MUST transmission by adjusting power ratios between near and far user equipments based on channel conditions and traffic requirements. This dynamic adjustment enables the system to adaptively optimize resource utilization while maintaining reception simplicity through coordinated multi-point transmission.
Solution Approach 2:
The patent changes the power ratio parameter between near and far user equipments in MUST transmission to optimize system performance. By adjusting this parameter, the system can improve time-frequency resource utilization while maintaining the simplicity of reception through coordinated multi-point transmission mechanisms.
2Device complexity
If single power ratio is used in MUST transmission, then device complexity is reduced, but performance gain is limited
Solution Approach 1:
The patent introduces dynamic power ratio adjustment mechanisms that allow the base station to adaptively select from multiple power ratio configurations based on real-time channel conditions and user equipment requirements. This dynamic approach increases system throughput while managing complexity through standardized selection criteria and pre-defined power ratio sets.
Solution Approach 2:
The patent changes the power ratio parameter between near and far user equipments to optimize system performance. By adjusting this parameter based on channel conditions and traffic requirements, the system can achieve higher throughput while managing complexity through standardized selection mechanisms.
3Productivity
If multiple power ratios are supported in MUST, then performance gain is significantly improved, but device complexity increases
Solution Approach 1:
The patent segments the power ratio selection into discrete levels or sets, where the base station can choose from predefined power ratio configurations (e.g., first power ratio for certain conditions, second power ratio for other conditions). This segmentation manages complexity by providing structured options while maintaining the ability to achieve significant performance gains through adaptive selection.
Solution Approach 2:
The patent manages the complexity of multiple power ratios by implementing structured parameter changes based on channel conditions and user equipment requirements. The system transitions between different power ratio configurations in a controlled manner, achieving performance improvement while managing complexity through standardized selection criteria.
Data Source
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AI summary
Embodiments of the present invention provide a data transmission method, including: allocating, based on a power ratio value of near user equipment to far user equipment in two paired user equipments, a transmit power to each of the near user equipment and the far user equipment, where the power ratio value is a ratio in a first ratio set, at least one ratio in the first ratio set can be selected from a second ratio set, and the second ratio set is a set including power ratio values represented by selectable composite constellation points at intervals of 1 in a constellation diagram; and performing data transmission based on the transmit power of the near user equipment and the transmit power of the far user equipment. Therefore, according to the embodiments of the present invention, a plurality of power ratio values of near user equipment to far user equipment in two paired user equipments can be provided, thereby increasing flexibility of a base station for the near user equipment and the far user equipment, and helping increase a performance gain that can be obtained by MUST transmission.