Radio Network Latency Reduction and Range Extension

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Solution Overview

Problem

Wireless communication networks face challenges in reducing latency and extending coverage range, particularly due to issues like dropped calls, poor signal quality, and increased demand for data transmission, which affect user satisfaction and network efficiency.

Innovation Solution

A latency reduction and range extension system that alters transmission policies based on signal metric measurements, utilizing geographic location and error correction policies to optimize power usage, data rate, and error correction frequency, thereby improving signal quality and reducing packet loss.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Area of stationary object

If transmission power is increased to extend coverage range, then coverage range is improved, but energy consumption increases

Engineering Contradiction:

Improvecoverage rangeVSAvoidenergy consumption

Core Design Contradiction:

Area of stationary objectVSUse of energy by stationary object

Solution Approach 1:

The system dynamically adjusts transmission parameters including power levels based on real-time signal metric measurements. The base station monitors signal quality and automatically modifies transmission power and other parameters to maintain coverage while optimizing energy consumption, rather than using fixed high power settings.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The patent changes multiple transmission parameters simultaneously including power, data rate, and error correction frequency based on measured signal metrics. This allows the system to extend coverage by adjusting the combination of parameters rather than simply increasing power, thereby reducing energy consumption while maintaining coverage range.

Inventive Principle:

Principle #35Parameter changes

2Reliability

If error correction frequency is increased to reduce packet loss, then reliability is improved, but data transmission rate decreases

Engineering Contradiction:

Improvepacket loss rateVSAvoiddata transmission rate

Core Design Contradiction:

ReliabilityVSProductivity

Solution Approach 1:

The system dynamically adjusts error correction frequency based on real-time signal metric measurements. When signal quality deteriorates, error correction frequency is automatically increased to reduce packet loss. When signal quality improves, error correction frequency is reduced to maximize data transmission rate, allowing the system to optimize both reliability and productivity based on current conditions.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The patent coordinates changes in multiple parameters including error correction frequency, data rate, and transmission power based on signal metrics. This allows the system to maintain reliability by adjusting error correction in conjunction with other parameters, thereby minimizing the impact on data transmission rate while still achieving the goal of reducing packet loss.

Inventive Principle:

Principle #35Parameter changes

3Loss of time

If transmission parameters are dynamically adjusted to reduce latency, then response time is improved, but system complexity increases

Engineering Contradiction:

ImprovelatencyVSAvoidsystem complexity

Core Design Contradiction:

Loss of timeVSDevice complexity

Solution Approach 1:

The base station continuously monitors signal metrics in advance and proactively adjusts transmission parameters before signal quality deteriorates significantly. This preliminary action allows the system to reduce latency by preparing optimal transmission parameters ahead of time, rather than reacting to poor signal conditions after they occur, while maintaining manageable system complexity through automated monitoring and adjustment.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The system implements a feedback mechanism where signal metric measurements are continuously taken and used to automatically adjust transmission parameters. This closed-loop feedback control reduces latency by ensuring parameters are optimized based on current signal conditions, while the automated nature of the feedback process prevents excessive complexity in manual intervention requirements.

Inventive Principle:

Principle #23Feedback

Data Source

PatentUS11363406B2Latency reduction and range extension system for radio networks

Publication Date: 2022.06.14 AT&T INTELLECTUAL PROPERTY I L P

AI summary

A radio access network system is described that determines a signal metric associated with a user equipment or device. The user equipment device can implement an altered transmission policy. The altered transmission policy can alter a strength of transmissions by increasing power consumption per transmission, increasing a length of timer per transmission, and altering other parameters of transmissions. The altered transmission policy can also alter an error correction policy. The error correction policy can indicate that error correction transmissions are to be decreased. The altered transmission policy can be implemented until the signal metric changes to a more desirable level.