Uplink Power Control via Frequency Partition Segmentation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current methods for controlling uplink transmitting power in wireless communication systems lack flexibility, which restricts the ability to effectively improve uplink performance and manage interference between cells.
Innovation Solution
A method that divides the uplink frequency band into multiple frequency partitions, with each partition having specific power control parameters, including a compensation factor determined by the expected Interference over Thermal Noise Ratio (IoT) of adjacent cells, allowing terminals to adjust their transmitting power on sub-carriers to optimize interference control and performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the uplink frequency band is divided into multiple frequency partitions with different power control parameters, then the flexibility of controlling uplink interference between cells is improved, but the device complexity and control overhead increase
Solution Approach 1:
The uplink frequency band is divided into multiple frequency partitions (first frequency partition and second frequency partition), each with independent power control parameters. This segmentation allows different compensation factors to be applied to different frequency resources, enabling flexible interference control while maintaining manageable complexity through structured division.
Solution Approach 2:
Different compensation factors are assigned to different frequency partitions based on local interference conditions. The first compensation factor is determined based on expected IoT of adjacent cells in the first frequency partition, while the second compensation factor is determined based on expected IoT in the second frequency partition, allowing localized optimization of power control.
2Device complexity
If a single compensation factor is used for the entire uplink frequency band, then the device complexity is reduced, but the ability to effectively control uplink interference between cells deteriorates
Solution Approach 1:
The system segments the uplink frequency band into multiple partitions and applies different compensation factors to each partition. This resolves the contradiction by maintaining relatively simple control mechanisms within each partition while achieving sophisticated overall interference control through the segmented structure.
Solution Approach 2:
The compensation factors are dynamically determined based on expected IoT conditions in each frequency partition. The base station adjusts the first and second compensation factors according to real-time interference conditions, enabling adaptive interference control without requiring overly complex static configurations.
3Reliability
If the compensation factor is determined based on expected IoT of adjacent cells in each frequency partition, then the uplink performance is improved, but the measurement precision requirements and control difficulty increase
Solution Approach 1:
The base station determines compensation factors based on expected IoT of adjacent cells before actual uplink transmission occurs. This preliminary determination allows the system to proactively adjust power control parameters according to predicted interference conditions, improving uplink performance while avoiding the need for highly precise real-time IoT measurements during transmission.
Solution Approach 2:
The system uses feedback information about expected IoT conditions from adjacent cells to determine appropriate compensation factors. The base station receives and processes IoT-related information, then adjusts the first and second compensation factors accordingly, creating a feedback-driven power control mechanism that balances performance improvement with measurement feasibility.
Data Source
Figure 1~2
Figure 3~4
Figure 5~6
AI summary
The present invention discloses a method and a system for controlling an uplink transmitting power, and a base station, wherein the method comprises: determining respective power control parameters of each frequency partition in a system whose uplink frequency band is divided into a plurality of frequency partitions, wherein each frequency partition comprises a plurality of physical sub-carriers; and a base station transmitting the power control parameters of all or part of the frequency partitions to a terminal, so that the terminal determines a transmitting power on a sub-carrier included in a corresponding frequency partition according to the power control parameters. By using the present invention, the power control parameters of a plurality of frequency partitions of an uplink frequency band are transmitted to the terminal, so that the terminal determines the transmitting power on the sub-carrier included in the corresponding frequency partition according to the power control parameters, which can solve the problems that the methods for controlling the uplink transmitting power in related technology is not flexible and can not effectively improve the uplink performance of the system, and can achieve the aims of controlling the uplink interference between the cells effectively and improving the uplink performance of the system,