Uplink Carrier Aggregation with Contiguous PRBs for Lower MPR
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current wireless communication technologies face challenges in achieving high uplink bandwidth and peak data rates due to the high peak-to-average power ratio (PAPR) and maximum power reduction (MPR) requirements in carrier aggregation, which limit coverage and range in uplink transmissions.
Innovation Solution
Implementing a modified radio frequency requirement that ensures contiguous physical resource blocks and same power spectral density across multiple uplink component carriers, along with a single Discrete Fourier Transform (DFT) process, to reduce MPR and increase transmission power.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If carrier aggregation is used to increase uplink bandwidth and peak data rates, then data transmission capacity is improved, but maximum power reduction requirements increase leading to reduced transmission power and coverage
Solution Approach 1:
The patent changes the parameter of physical resource block allocation from non-contiguous to contiguous across component carriers. This parameter change in resource allocation enables the system to achieve higher uplink bandwidth and peak data rates through carrier aggregation while simultaneously reducing maximum power reduction requirements, thereby maintaining higher transmission power and extended coverage.
2Adaptability or versatility
If carrier aggregation with non-contiguous resource blocks is used, then frequency diversity is improved, but signal quality and transmission reliability deteriorate due to high PAPR
Solution Approach 1:
The patent inverts the conventional approach by allocating contiguous physical resource blocks instead of non-contiguous blocks. This inversion maintains frequency diversity benefits while significantly reducing peak-to-average power ratio, thereby improving signal quality and transmission reliability in carrier aggregation scenarios.
3Reliability
If maximum power reduction is applied to meet RF requirements in carrier aggregation, then radio frequency compliance is improved, but transmission power and signal range deteriorate
Solution Approach 1:
The patent changes the resource block allocation parameter to be contiguous across component carriers, which modifies the RF characteristics of the transmitted signal. This parameter change enables the system to meet radio frequency compliance requirements with reduced maximum power reduction, thereby maintaining higher transmission power and extending signal range.
Data Source
AI summary
According to example embodiments, a method may include transmitting, by a user device to a wireless network node, data via a plurality of uplink component carriers including at least a first uplink component carrier and a second uplink component carrier; wherein a first subset of physical resource blocks for the first component carrier is contiguous with a second subset of physical resource blocks for the second component carrier; wherein the first component carrier and the second component carrier have a same power spectral density; and applying a modified radio frequency requirement by the user device wherein the modified radio frequency requirement impacts a transmission power of the first uplink component carrier and of the second uplink component carrier.