Uplink Power Control via Edge-Dependent Reduction in Wireless Networks
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Solution Overview
Problem
Current power control mechanisms in wireless communication systems, such as LTE and 5G, face challenges in optimizing uplink transmission power to minimize interference and power consumption, especially when user devices are near the edge of the base station channel bandwidth, where out-of-band emission requirements are stringent.
Innovation Solution
A power control scheme that adjusts the maximum transmission power of user devices based on the distance of their resource block allocation from the edge of the base station channel bandwidth, using different maximum power reduction values for allocations within and near the edge, allowing for greater transmission power when in-band emissions are less restrictive.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If the maximum transmission power is increased to improve signal quality and network efficiency, then the transmission power for resource blocks further from the edge can be enhanced, but the out-of-band emission requirements near the edge of the base station channel bandwidth become more stringent and must be strictly adhered to
Solution Approach 1:
The patent applies local quality by implementing different maximum power reduction values for different regions of the resource block allocation. Specifically, resource blocks near the edge of the base station channel bandwidth apply a first maximum power reduction value to satisfy stringent out-of-band emission requirements, while resource blocks further from the edge apply a second maximum power reduction value that allows higher transmission power. This spatial differentiation of power control parameters resolves the contradiction between improving signal quality and reducing harmful emissions.
Solution Approach 2:
The patent changes the power control parameter (maximum power reduction value) based on the position of resource blocks within the channel bandwidth. By dynamically adjusting the power reduction parameter according to the distance from the channel edge, the system optimizes transmission power where permissible while maintaining emission compliance where required, thus resolving the contradiction between power enhancement and emission control.
2Object-generated harmful factors
If the transmission power is reduced near the edge of the base station channel bandwidth to satisfy out-of-band emission requirements, then radio interference is minimized, but the signal quality and network efficiency for those resource blocks deteriorate
Solution Approach 1:
The patent applies local quality by implementing different maximum power reduction values for different regions of the resource block allocation. Specifically, resource blocks near the edge of the base station channel bandwidth apply a first maximum power reduction value to satisfy stringent out-of-band emission requirements, while resource blocks further from the edge apply a second maximum power reduction value that allows higher transmission power. This spatial differentiation of power control parameters resolves the contradiction between improving signal quality and reducing harmful emissions.
Solution Approach 2:
The patent segments the resource block allocation into different zones based on their distance from the channel edge. By dividing the bandwidth into regions with different power control characteristics, the system can optimize signal quality in safe zones while controlling interference in edge zones, thus resolving the contradiction between these two objectives.
3Device complexity
If a uniform maximum power reduction value is applied to all resource blocks, then the power control mechanism is simple to implement, but the network efficiency and signal quality cannot be optimized for different positions within the channel bandwidth
Solution Approach 1:
The patent applies local quality by implementing different maximum power reduction values for different regions of the resource block allocation. Specifically, resource blocks near the edge of the base station channel bandwidth apply a first maximum power reduction value to satisfy stringent out-of-band emission requirements, while resource blocks further from the edge apply a second maximum power reduction value that allows higher transmission power. This spatial differentiation of power control parameters resolves the contradiction between improving signal quality and reducing harmful emissions.
Solution Approach 2:
The patent introduces dynamic power control by adjusting the maximum power reduction value based on the position of resource blocks within the channel bandwidth. This dynamic adaptation allows the system to optimize network efficiency and signal quality for different positions, resolving the contradiction between simplicity and performance optimization.
Data Source
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AI summary
A technique includes controlling uplink transmission power of auser device, wherein a resource block allocation for the user device includes resource blocks in a user device channel bandwidth that is a part of a base station channel bandwidth and the user device channel bandwidth is less than the base station channel bandwidth, wherein the controlling uplink transmission power of the user device comprises reducing a maximum transmission power of the user device for an uplink transmission via the resource block allocation by a maximum power reduction value that is determined based on a distance of the resource block allocation from at least one edge of the base station channel bandwidth.