Network Device Gain-Based Power Control for Interference Reduction
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Solution Overview
Problem
Conventional wireless communication systems face challenges in efficiently controlling transmit power of terminal devices to minimize intra-cell and inter-cell interference while adhering to established standards, often leading to unnecessary power emission and interference.
Innovation Solution
A network device determines a gain associated with a received signal using interference rejection combining techniques, selecting a power control strategy based on this gain to optimize power emission and reduce interference, incorporating techniques like minimum mean square error equalization and maximum ratio combining to balance signal and noise ratios.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-generated harmful factors
If conventional power control strategies are used, then power emission is controlled, but intra-cell and inter-cell interference cannot be sufficiently reduced
Solution Approach 1:
The network device calculates a first gain based on comparing signal-to-noise ratios from different processing techniques (interference rejection combining vs. other techniques) and uses this gain as feedback to select appropriate power control strategies. This feedback mechanism enables dynamic adjustment of terminal device transmit power to reduce interference while avoiding unnecessary power emission.
Solution Approach 2:
The system changes the parameter of power control strategy selection based on the calculated first gain. By thresholding the gain value and selecting from multiple power control strategies accordingly, the system optimizes the balance between power emission and interference reduction in different channel conditions.
2Reliability
If power control strategies are optimized to reduce interference, then network performance improves, but complexity in determining and implementing control strategies increases
Solution Approach 1:
The network device autonomously calculates the first gain by processing received signals through multiple techniques and automatically selects power control strategies without requiring complex external control mechanisms. The system serves itself by using the received signal characteristics to drive the power control decisions.
Solution Approach 2:
The power control process is segmented into distinct steps: calculating the first gain by comparing signal-to-noise ratios, determining whether the gain exceeds a threshold, and selecting from multiple power control strategies based on the gain value. This segmentation simplifies the overall complexity by breaking down the decision-making process into manageable stages.
Data Source
AI summary
An apparatus for a network device, the apparatus comprising at least one processor, and at least one memory storing instructions that, when executed by the at least one processor, cause the network device to: determine a first gain associated with a received signal, wherein the first gain characterizes a difference between a first signal to noise ratio obtainable by processing the received signal using a first technique based on interference rejection combining and a second signal to noise ratio obtainable by processing the received signal using a second technique different from the first technique, select, based on the first gain, a power control strategy out of a plurality of power control strategies for a terminal device associated with the received signal, at least temporarily apply the selected power control strategy for the terminal device.