Wireless Power Control via Resource Pair Link Segmentation
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Solution Overview
Problem
In wireless communications, determining appropriate transmit power for narrow beams is challenging, especially when using beamforming technology, as excessive power can cause interference, while insufficient power may result in signal reception failure, and existing power control methods are not effectively tailored to different channel features.
Innovation Solution
Establishing an association between power control and resource pair links allows for granular power control based on channel features, enabling more accurate transmit power settings for different signals, thereby reducing interference and improving network communication quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If high transmit power is used for narrow beam communication, then signal coverage and reception reliability are improved, but interference to other channels and signals increases
Solution Approach 1:
The patent segments the power control mechanism by introducing resource pair link-specific power control parameters. Each resource pair link (combining specific transmit beam, receive beam, and time-frequency resource) is assigned dedicated power control parameters, allowing transmit power to be segmented and optimized for each specific communication path rather than using a single unified power level for all narrow beams.
Solution Approach 2:
The patent applies local quality by enabling different power control parameters for different resource pair links. Each resource pair link can have its own path loss compensation factor and power adjustment values, allowing the power control to be locally optimized according to the specific channel characteristics of each beam pair link, thereby achieving high reliability for each link while minimizing interference to other links.
2Object-generated harmful factors
If low transmit power is used to reduce interference, then interference to other signals is reduced, but signal reception failure occurs
Solution Approach 1:
The patent implements dynamic power control by introducing adjustable power control parameters for each resource pair link. The base station can dynamically adjust the path loss compensation factor and power adjustment values based on channel conditions, signal quality measurements, and interference levels, allowing the system to adaptively find the optimal power level that prevents reception failure while minimizing interference.
Solution Approach 2:
The patent changes power control parameters specifically for different resource pair links. By modifying the power control parameters (such as path loss compensation factors and power adjustment values) on a per-resource-pair-link basis, the system can precisely control transmit power to achieve sufficient signal strength for reliable reception while keeping interference to other signals at acceptable levels.
3Device complexity
If unified power control is used for all beams, then system complexity is reduced, but accurate power control for different channel features cannot be achieved
Solution Approach 1:
The patent segments the power control system into resource pair link-specific control units. Each resource pair link is assigned dedicated power control parameters, creating a segmented control structure that enables precise power control for each channel while maintaining manageable system complexity through modular parameter management.
Solution Approach 2:
The patent uses a universal power control framework that can handle multiple types of signals (data, control, reference signals) and multiple beam configurations through a unified set of resource pair link-specific parameters. This multi-functional approach allows the same power control mechanism to serve various communication scenarios without requiring separate complex control systems for each case.
Data Source
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AI summary
An embodiment of this application provides a power control method. The method includes: receiving, by a first node from a second node, first power control information associated with a first resource pair link; and sending, by the first node, a first signal to the second node by using a first transmission resource corresponding to the first resource pair link, where transmit power of the first signal is obtained based on the first power control information. An association relationship is established between power control and a resource pair link, so that power control on a resource pair link granularity can be implemented, different power control can be performed based on different channel features, and more accurate transmit power is obtained. In addition, various signals are transmitted on resources corresponding to different resource pair links, so that different power control values can be set for the various signals. In this way, interference can be reduced while correct reception is performed, and a significant gain may be made on network communication quality.