Sensing Channel Transmit Power Control via Path Loss
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Solution Overview
Problem
Existing communication systems face challenges in controlling the transmit power of channels/signals used for sensing, particularly due to the near-far effect and interference between intra-frequency cells.
Innovation Solution
A power control method that determines the transmit power of a channel/signal used for sensing based on the path loss of related links, using either a path loss model or power control parameters, to ensure effective sensing performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If transmit power of sensing channel/signal is increased to overcome near-far effect, then signal strength at receiving end is improved, but interference between intra-frequency cells increases
Solution Approach 1:
The patent applies parameter changes by dynamically adjusting transmit power based on path loss calculations. The transmitting device determines path loss of the sensing link and uses this parameter to compute appropriate transmit power levels, thereby adapting the signal strength to overcome near-far effect while controlling interference through precise parameter control.
2Object-generated harmful factors
If transmit power is controlled to suppress interference, then interference between intra-frequency cells is reduced, but signal strength may become insufficient to overcome near-far effect
Solution Approach 1:
The patent implements feedback mechanisms where the transmitting device continuously monitors path loss conditions and adjusts transmit power accordingly. The receiving device may provide feedback about received signal quality, and the transmitting device uses this feedback along with path loss measurements to optimize transmit power, ensuring both sufficient signal strength and controlled interference.
3Measurement precision
If path loss based power control is implemented for sensing channels, then transmit power control accuracy is improved, but system complexity increases
Solution Approach 1:
The patent applies segmentation by separating the power control process into distinct modules: path loss measurement module, power calculation module, and power adjustment module. This segmentation allows for precise power control through systematic path loss measurement and calculation while managing system complexity through modular design, where each module performs a specific function independently.
Data Source
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AI summary
The present application relates to a power control method and a device. The method comprises: according to a path loss of at least one first link, a first device determines a transmission power of a channel/signal used for sensing, the first link being a link related to a transmission link for the channel/signal used for sensing. The present application allows for control of transmission powers of channels/signals used for sensing.