Distributed Unit Scheduling of Custom Traffic via Unscheduled PRBs

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Solution Overview

Problem

Modern wireless communications face challenges in optimizing radio size, weight, thermal dissipation, reliability, complexity, and cost due to engineering and system design tradeoffs, which impact customer capital expenditures and operating expenditures.

Innovation Solution

A distributed unit schedules the injection of custom traffic by a radio unit into the communications path, allowing for real-time performance measurement, troubleshooting, and optimization of radio unit operations through custom signal data injection using unscheduled physical resource blocks, leveraging timing and synchronization data.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Device complexity

If radio unit size and complexity are reduced to lower capital expenditures, then deployment cost decreases, but performance measurement and troubleshooting capabilities are limited

Engineering Contradiction:

Improveradio unit complexityVSAvoidperformance measurement capability

Core Design Contradiction:

Device complexityVSMeasurement precision

Solution Approach 1:

A distributed unit acts as an intermediary between the radio unit and the network core, enabling advanced performance measurement and troubleshooting capabilities while keeping the radio unit itself simple. The distributed unit injects custom traffic and collects detailed measurements without requiring complex functionality within the radio unit hardware.

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The system enables self-service performance optimization by automatically collecting detailed measurement data from the radio unit and using machine learning models to generate optimization recommendations, reducing the need for manual intervention while maintaining measurement precision.

Inventive Principle:

Principle #25Self-service

2Reliability

If more resources are allocated for performance monitoring and optimization, then system reliability improves, but operating expenditures increase

Engineering Contradiction:

Improvesystem reliabilityVSAvoidoperating expenditure

Core Design Contradiction:

ReliabilityVSUse of energy by stationary object

Solution Approach 1:

The system applies partial monitoring by focusing measurements on critical performance parameters and time periods when optimization is most beneficial, rather than continuous full-system monitoring. This reduces operating expenditures while maintaining adequate reliability through targeted measurement and optimization actions.

Inventive Principle:

Principle #16Partial or excessive action

Data Source

PatentUS12418934B2Distributed unit scheduling for radio unit-based custom traffic insertion

Publication Date: 2025.09.16 DELL PROD LP

AI summary

The described technology is generally directed towards scheduling, by a distributed unit, the injection of custom traffic (signals/data) by a radio unit into a radio unit communications path. The scheduling can be such that the custom traffic can be interleaved with to live-air and/or non-live-air traffic, for example. The radio unit can request unscheduled physical resource blocks for custom traffic to be inserted by the radio unit, and the distributed unit can communicate the timing and scheduling (identify the unscheduled physical resource blocks) to the radio unit in response to the request. The custom traffic is configured to perform some action by the radio unit, such as to perform antenna calibration, to perform test and measurement operations to obtain performance data, and the like. Performance data can be used, for example, to modify operating parameters of the radio unit to improve performance of the radio unit.