Multicarrier Uplink Power Allocation for Out-of-Band Emission Control
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Solution Overview
Problem
Existing wireless communication systems face challenges in managing power allocation for uplink channels to meet stringent out-of-band emission requirements in multicarrier and multi-cell operations, leading to suboptimal system performance.
Innovation Solution
Wireless terminals employ processor circuitry to select between different formulae for determining allocation types based on resource block locations relative to channel bandwidth, using appropriate maximum power reduction values to optimize transmission power and meet emission requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If maximum transmission power is increased to improve system performance, then communication quality improves, but out-of-band emission requirements are violated
Solution Approach 1:
The patent applies local quality by differentiating power allocation based on resource block location. Different maximum power reduction values are applied to different allocation types (edge RB allocation vs. inner RB allocation), allowing localized power optimization that meets out-of-band emission requirements while maintaining system performance.
Solution Approach 2:
The patent changes the power parameter dynamically based on allocation type. The configured maximum transmission power is adjusted using different formulae depending on whether edge RB or inner RB allocation is detected, enabling adaptive power control that balances performance and emission requirements.
2Object-affected harmful factors
If power reduction is increased to meet emission requirements, then out-of-band emission is controlled, but transmission power becomes suboptimal
Solution Approach 1:
The patent introduces dynamic power control by selecting between different power reduction formulae based on real-time allocation type detection. The system dynamically adjusts maximum power reduction values according to whether edge RB or inner RB allocation is identified, optimizing transmission power for each scenario rather than applying a fixed reduction.
Solution Approach 2:
The patent changes power parameters adaptively by using different formulae for configured maximum transmission power calculation. The parameter ΔTIB,c is adjusted based on allocation type, enabling the system to maintain optimal transmission power while meeting emission requirements through parameter optimization rather than uniform power reduction.
3Ease of manufacture
If uniform power allocation is used across all resource blocks, then implementation is simple, but system performance is suboptimal in multicarrier operation
Solution Approach 1:
The patent implements local quality by detecting allocation type (edge RB vs. inner RB) and applying different power allocation strategies accordingly. This differentiated approach optimizes system performance for multicarrier operation by recognizing that different resource block locations have different power requirements, rather than using uniform allocation.
Solution Approach 2:
The patent segments the resource allocation into different types (edge RB allocation and inner RB allocation) with distinct power control formulae. This segmentation allows the system to handle different scenarios optimally, improving overall system performance in multicarrier and multi-cell operations while maintaining manageable complexity through clear classification.
Data Source
AI summary
A wireless terminal which communicates with a radio access network comprises processor circuitry configured to make a selection between different formulae for determining an allocation type for an uplink transmission on an uplink channel. The allocation type is a parameter utilized by the processor to determine a parameter for a configured maximum transmission power for a carrier for the uplink channel upon which the uplink transmission is transmitted. A type of the allocation type is determined depending on location of an allocated resource block for the uplink channel relative to channel bandwidth. The wireless terminal may also comprise transmitter circuitry configured to transmit the uplink transmission over the radio interface using transmission power determined by the configured maximum transmission power parameter.