Coordinated Access and Backhaul Networks for Microwave Link Adaptation

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Solution Overview

Problem

Conventional microwave backhaul links are costly, power-intensive, and performance is heavily dependent on environmental conditions, failing to efficiently manage link margin and optimize performance across varying conditions.

Innovation Solution

The system coordinates signaling parameters between access and backhaul networks to dynamically adjust for environmental conditions, such as atmospheric attenuation, by adjusting parameters like sampling rate, FEC code rate, and modulation type, ensuring optimal link margin, power consumption, and performance across different conditions.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If conventional microwave backhaul links are used, then reliable communication is achieved, but power consumption is high and cost is high

Engineering Contradiction:

Improvecommunication reliabilityVSAvoidpower consumption

Core Design Contradiction:

ReliabilityVSUse of energy by moving object

Solution Approach 1:

The patent implements dynamic adjustment of signaling parameters (sampling rate, FEC code rate, modulation type) based on real-time environmental conditions. The system transitions from static conventional configurations to dynamic adaptive configurations, allowing the backhaul link to optimize power consumption while maintaining reliability by adjusting parameters according to atmospheric attenuation and other environmental factors.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The patent changes physical parameters of the communication system including sampling rate, FEC code rate, and modulation type based on environmental conditions. By varying these parameters dynamically, the system achieves lower power consumption in favorable conditions while maintaining reliability in adverse conditions, directly resolving the contradiction between power consumption and communication reliability.

Inventive Principle:

Principle #35Parameter changes

2Reliability

If conventional microwave backhaul links are used, then communication is maintained, but performance is highly dependent on environmental conditions

Engineering Contradiction:

Improvecommunication continuityVSAvoidenvironmental adaptability

Core Design Contradiction:

ReliabilityVSAdaptability or versatility

Solution Approach 1:

The patent implements a feedback mechanism that continuously monitors environmental conditions (atmospheric attenuation, temperature, humidity) and adjusts signaling parameters accordingly. This closed-loop control system enables the backhaul link to adapt to environmental changes, maintaining communication continuity while improving environmental adaptability through real-time parameter optimization.

Inventive Principle:

Principle #23Feedback

Solution Approach 2:

The system transitions from static conventional configurations to dynamic adaptive configurations that respond to environmental conditions. By continuously adjusting sampling rate, FEC code rate, and modulation type based on real-time environmental feedback, the system achieves both communication continuity and environmental adaptability.

Inventive Principle:

Principle #15Dynamics

3Use of energy by moving object

If signaling parameters are adjusted dynamically, then power consumption is reduced and performance is optimized, but system complexity increases

Engineering Contradiction:

Improvepower consumptionVSAvoidsystem complexity

Core Design Contradiction:

Use of energy by moving objectVSDevice complexity

Solution Approach 1:

The patent implements dynamic adjustment mechanisms for signaling parameters that respond to environmental conditions. While this increases system complexity compared to conventional static configurations, the complexity is justified by the significant reductions in power consumption and optimization of performance. The system manages this complexity through coordinated adjustment of multiple parameters (sampling rate, FEC code rate, modulation type) based on environmental feedback.

Inventive Principle:

Principle #15Dynamics

4Reliability

If sampling rate and FEC code rate are adjusted, then link margin is optimized, but device complexity increases

Engineering Contradiction:

Improvelink marginVSAvoidcontrol complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent adjusts sampling rate and FEC code rate as key parameters to optimize link margin under varying environmental conditions. By coordinating changes in these parameters with modulation type adjustments, the system optimizes link margin while managing control complexity through a systematic approach to parameter adjustment based on environmental conditions.

Inventive Principle:

Principle #35Parameter changes

Data Source

PatentUS10098131B2Coordinated access and backhaul networks

Publication Date: 2018.10.09 MAXLINEAR INC

AI summary

A communications network comprises performance determination circuitry and link control circuitry. The performance determination circuitry is operable to determine performance of a microwave backhaul link between a first microwave backhaul transceiver and a second microwave backhaul transceiver. The microwave backhaul link backhauls traffic of a mobile access link. The link control circuitry is operable to, in response to an indication from the performance determination circuitry that the performance of the microwave backhaul link has degraded, adjust one or more signaling parameters used for the mobile access link. The link control circuitry is operable to, in response to the indication that the performance of the microwave backhaul link has degraded, adjust one or more signaling parameters used for the backhaul link in combination with the adjustment of the parameter(s) of the access link.