Uplink Power Control via Error Rate Feedback
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Solution Overview
Problem
Current wireless access nodes do not optimize transmit power for wireless User Equipment (UEs) based on uplink error rates, leading to suboptimal performance in maintaining signal strength and throughput.
Innovation Solution
Implementing a method where wireless access nodes, equipped with a Baseband Unit (BBU) and radio, determine individual uplink signal strengths and error rates for UEs, and adjust transmit power instructions accordingly to optimize uplink power allocation, taking into account both error rates and backhaul throughput.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If transmit power is increased to maintain signal strength, then signal quality improves, but energy consumption increases
Solution Approach 1:
The patent implements a feedback mechanism where the access node monitors uplink error rates and signal strengths from UEs, then adjusts transmit power instructions accordingly. The UE reports uplink quality metrics (error rates, signal strengths) back to the access node, which uses this feedback to dynamically adjust power control instructions, optimizing the balance between signal quality and energy consumption.
Solution Approach 2:
The system dynamically adjusts transmit power based on real-time uplink error rates and signal conditions rather than using fixed power levels. The access node continuously updates power control instructions to UEs based on changing channel conditions, making the power control adaptive and responsive to actual link quality.
2Productivity
If transmit power is increased to reduce retransmissions, then throughput improves, but energy consumption increases
Solution Approach 1:
The access node uses feedback on uplink error rates to determine appropriate power adjustments. By monitoring the ratio of retransmitted data to total transferred data, the system can identify when error rates are causing throughput degradation and adjust power accordingly, optimizing the trade-off between energy consumption and effective throughput.
Solution Approach 2:
The system changes the transmit power parameter dynamically based on measured uplink error rates and signal strengths. By adjusting this key parameter in response to actual link conditions, the system optimizes throughput while avoiding unnecessary energy consumption when channel conditions are good.
3Productivity
If individual power control is implemented for each UE, then network performance improves, but device complexity increases
Solution Approach 1:
The patent applies segmentation by implementing individual power control for each UE rather than uniform power control for all UEs. The access node processes each UE's uplink signals separately, determining individual error rates and signal strengths, and generates UE-specific power control instructions, enabling optimized performance for each user.
Solution Approach 2:
Each UE autonomously adjusts its transmit power based on received power control instructions from the access node. The UE independently monitors its own uplink signal strength and error rate, and self-adjusts power levels without requiring manual configuration or complex centralized control for each device.
Data Source
AI summary
A wireless access node controls the transmit power of wireless User Equipment (UEs). The wireless access node determines individual uplink signal strengths for the individual wireless UEs. The wireless access node determines individual uplink error rates for the individual wireless UEs. The wireless access node determines individual power instructions for the individual wireless UEs based on their individual uplink signal strengths and their individual uplink error rates. The wireless access node transfers the individual power instructions to the individual wireless UEs. The individual wireless UEs control their transmit power responsive to the individual power instructions.