Dynamic RF Circuitry Tuning for Carrier Aggregation

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Solution Overview

Problem

Current wireless communication devices using LTE-A networks with fixed RF settings for carrier aggregation do not optimize performance for both downlink and uplink communications, leading to suboptimal results due to static tuning of radio frequency circuitry.

Innovation Solution

The wireless communication device dynamically adjusts its RF circuitry based on real-time monitoring of radio frequency conditions, matching RF component blocks to antennas to maximize power transfer and data rates through primary and secondary component carriers, optimizing performance in both downlink and uplink directions.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If fixed settings for RF circuitry are used to maximize communication on a primary component carrier, then downlink communication performance is improved, but overall communication performance deteriorates when carrier aggregation via multiple component carriers is used

Engineering Contradiction:

Improvedownlink communication performanceVSAvoidperformance with multiple component carriers

Core Design Contradiction:

ReliabilityVSAdaptability or versatility

Solution Approach 1:

The patent implements dynamic adjustment of RF circuitry settings based on real-time monitoring of RF conditions and performance metrics. The system transitions from fixed static settings to dynamic adaptive settings that can change based on whether uplink or downlink communication is power constrained, thereby optimizing performance for carrier aggregation scenarios while maintaining good downlink performance.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The system changes physical parameters of the RF circuitry (such as impedance matching, filter settings, and amplifier gains) based on monitored performance metrics. By adjusting these parameters dynamically according to power constraint conditions on uplink and downlink, the system achieves optimal performance across multiple component carriers while preserving downlink communication quality.

Inventive Principle:

Principle #35Parameter changes

2Power

If RF circuitry is tuned to maximize power transfer via primary component carrier, then uplink power transfer is improved, but downlink communication performance deteriorates when using multiple component carriers

Engineering Contradiction:

Improveuplink power transferVSAvoiddownlink communication performance

Core Design Contradiction:

PowerVSReliability

Solution Approach 1:

The system dynamically changes RF circuitry parameters based on real-time monitoring of power constraint conditions. When uplink is power constrained, parameters are adjusted to maximize uplink power transfer; when downlink is power constrained, parameters are adjusted to maximize downlink performance. This conditional parameter adjustment resolves the contradiction between uplink and downlink optimization.

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The system implements feedback mechanisms by monitoring RF conditions and performance metrics continuously. Based on this feedback, the system determines whether uplink or downlink is power constrained and adjusts RF settings accordingly, creating a closed-loop control system that balances uplink and downlink performance in carrier aggregation scenarios.

Inventive Principle:

Principle #23Feedback

3Device complexity

If static tuning of RF circuitry is used, then device complexity is reduced, but communication performance deteriorates in carrier aggregation scenarios

Engineering Contradiction:

ImproveRF circuitry configurationVSAvoidcommunication performance

Core Design Contradiction:

Device complexityVSReliability

Solution Approach 1:

The patent introduces dynamic adaptation mechanisms that automatically adjust RF circuitry settings based on monitored conditions. While this increases device complexity compared to static tuning, the dynamic nature allows the system to optimize performance for carrier aggregation scenarios, achieving better communication reliability that justifies the added complexity.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The system implements self-service by autonomously monitoring RF conditions and adjusting its own settings without external intervention. The device automatically determines power constraint conditions and reconfigures RF circuitry accordingly, reducing the need for manual configuration while maintaining high performance in carrier aggregation environments.

Inventive Principle:

Principle #25Self-service

Data Source

PatentUS9554359B2Dynamic antenna tuner setting for carrier aggregation scenarios

Publication Date: 2017.01.24 APPLE INC

AI summary

Apparatus and methods for dynamically adjusting radio frequency circuitry in a wireless communication device are disclosed. The wireless communication device can receive downlink communication using carrier aggregation through a primary component carrier and a secondary component carrier. When carrier aggregation is not enabled, the wireless communication device adjusts the radio frequency circuitry based on default values. When carrier aggregation is enabled, the wireless communication device evaluates radio frequency conditions for the primary and secondary component carriers and adjusts the radio frequency circuitry based on whether uplink and/or downlink communication is power constrained. When uplink communication is power constrained, the wireless communication device adjusts the radio frequency circuitry for optimal performance via the primary component carrier, and when uplink communication is not power constrained, the wireless communication device adjusts the radio frequency circuitry for optimal performance via the combination of the primary and secondary component carriers used for carrier aggregation.