Individualized MTPL Allocation for Parallel Uplink Radio Links
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Solution Overview
Problem
Existing wireless communication systems face challenges in dynamically allocating uplink transmit power across multiple parallel radio links, leading to premature exhaustion of the power budget and impacting data throughput and connectivity stability due to inconsistent power usage among different radio links.
Innovation Solution
A wireless device sets an initial maximum transmit power level (MTPL) for each radio link based on duty cycle prediction and adjusts it according to predicted data throughput, ensuring fair allocation and compliance with regulatory power limits by reducing MTPL for high-duty-cycle links and apportioning power among multiple antenna ports.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If transmit power is increased to maximize data throughput, then data throughput is improved, but power budget is exhausted prematurely requiring reduction to fallback level
Solution Approach 1:
The patent implements dynamic power budget allocation by continuously monitoring power consumption across multiple radio links and adjusting the maximum transmit power level (MTPL) for each link in real-time. This dynamic adjustment allows the system to optimize data throughput while preventing premature exhaustion of the power budget, resolving the contradiction between maximizing productivity and extending duration of action.
Solution Approach 2:
The system changes the power allocation parameters by setting individual MTPL values for each radio link based on predicted duty cycles and actual power consumption patterns. By modifying these power parameters dynamically rather than using fixed allocation, the system achieves both high data throughput and sustained power budget duration throughout the averaging time period.
2Productivity
If power is allocated to some radio links, then those links achieve higher throughput, but other radio links sharing the same budget experience reduced power availability
Solution Approach 1:
The patent applies local quality by allocating power differently to each radio link based on its specific characteristics, predicted duty cycle, and current consumption patterns. Each link receives a customized MTPL value rather than uniform allocation, allowing high-throughput links to consume more power while ensuring minimum power availability for other links, thus maintaining overall connectivity stability.
Solution Approach 2:
The system implements feedback mechanisms by continuously monitoring actual power consumption against predicted consumption for each radio link. This feedback loop allows the system to adjust MTPL allocations dynamically, ensuring that no single link monopolizes the power budget and that all links maintain stable connectivity while achieving optimal overall throughput.
3Productivity
If maximum power level is transmitted continuously, then instantaneous throughput is maximized, but average power limit is exceeded violating regulatory requirements
Solution Approach 1:
The patent implements periodic action by structuring power transmission in cycles aligned with the regulatory averaging time period. The system allows instantaneous power to reach maximum levels during specific intervals within the averaging period, then reduces power consumption in subsequent intervals, ensuring that the average power across the complete period complies with regulatory limits while achieving high instantaneous throughput when needed.
Solution Approach 2:
The system dynamically adjusts transmit power levels throughout the averaging time period based on real-time monitoring of power budget consumption and predicted duty cycles. This dynamic control enables the system to transmit at maximum power when conditions permit while automatically reducing power to maintain compliance with average power limits, resolving the contradiction between instantaneous productivity and regulatory compliance.
Data Source
AI summary
This application describes methods and apparatus to allocate uplink (UL) power dynamically across multiple parallel radio frequency links for wireless devices. The wireless device sets an initial maximum transmit power level (MTPL) for each UL radio link of multiple radio links used for UL traffic based on a duty cycle prediction for the respective UL radio link. The wireless device adjusts the initial MTPL for each UL radio link based on a predicted data throughput for the UL radio link relative to a total predicted data throughput for all UL radio links. The adjusted MTPL for each UL radio link can be also reduced when the UL radio link uses UL multiple input multiple output (MIMO) transmission via multiple antenna ports, e.g., by apportioning the adjusted MTPL among the multiple antenna ports of the UL radio link equally.