Base Station Downlink Transmission Power Configuration
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current base station configurations are inflexible and fail to effectively reduce interference between base stations during downlink transmission in 5G NR networks, particularly due to the use of self-contained subframes that can cause interference between neighboring cells.
Innovation Solution
Implementing a downlink transmission method where data and reference signals are sent in a spatial multiplexing manner on time-frequency resources, allowing for flexible power configuration and reduced interference by dividing data into sets with individual transmit powers, and using self-contained subframes to adjust transmit powers based on the transmission mode in neighboring cells.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If self-contained subframes are used for downlink transmission, then data transmission efficiency is improved, but interference between neighboring base stations increases
Solution Approach 1:
The patent applies local quality by configuring different transmit powers for different data sets transmitted on the same time-frequency resource. Specifically, when a first data set and a second data set are transmitted simultaneously, the first data set uses first transmit power while the second data set uses second transmit power. This localized power differentiation allows the system to maintain high data transmission efficiency through spatial multiplexing while reducing interference to neighboring base stations by adjusting power levels for specific data streams.
Solution Approach 2:
The patent implements parameter changes by dynamically adjusting transmit power levels for different data sets based on interference conditions. The network device configures different transmit powers (first transmit power and second transmit power) for different data sets transmitted on overlapping time-frequency resources. This parameter variation enables the system to optimize data transmission efficiency while managing interference with neighboring cells through flexible power control.
2Adaptability or versatility
If base station configuration is made flexible to support different transmission modes, then interference reduction capability is improved, but system complexity increases
Solution Approach 1:
The patent applies segmentation by dividing data into multiple data sets (first data set, second data set, etc.) that can be transmitted simultaneously on the same time-frequency resource using spatial multiplexing. Each data set can be configured with different transmit powers and transmission parameters. This segmentation approach enables flexible base station configuration for interference management while maintaining manageable system complexity through structured data division and independent parameter configuration for each segment.
Data Source
Figure 1~2
Figure 3~4
Figure 5
AI summary
Embodiments of this application provide a downlink transmission method, a base station, and a terminal device. The method includes: dividing, by a base station, to-be-transmitted data into at least two sets, and configuring a transmit power for each of the at least two sets; and sending, by the base station, data in each set to the terminal device at the transmit power configured for each set. In the embodiments of this application, the to-be-transmitted data is divided into the at least two sets, a transmit power is configured individually for each set, and the data in each set is sent to the terminal device at the transmit power configured for each set. In this way, flexibility of base station configuration can be improved.