Network Slice Isolation for Mixed QoS Data Transmission

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Solution Overview

Problem

Existing communication networks struggle to effectively manage and prioritize data flows with different quality of service (QoS) requirements, leading to performance degradation of latency-sensitive protocols due to interference from capacity-oriented flows, which is not adequately addressed by current network slicing frameworks.

Innovation Solution

A network slicing framework that defines and isolates data flows with specific QoS constraints, using orthogonalized network slices to ensure protected delivery and prevent interference, employing multi-connectivity services and protocol stacks to manage resources dynamically.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If network slicing framework is implemented to manage QoS requirements, then latency-sensitive data flow delivery is improved, but device complexity increases

Engineering Contradiction:

Improvelatency-sensitive data flow deliveryVSAvoidnetwork slicing framework complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent segments the communication network into multiple orthogonal network slices, each dedicated to specific QoS requirements. Capacity-oriented flows and latency-sensitive flows are separated into different slices, preventing interference while maintaining manageable complexity through structured division of network resources.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent introduces an intermediary mechanism (orthogonal network slice) that mediates between capacity-oriented and latency-sensitive data flows. This intermediary structure enables QoS management without requiring complex direct control between conflicting flow types, simplifying the overall system architecture.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Productivity

If multiple data flows with different QoS requirements are transmitted using shared network resources, then network resource utilization efficiency is improved, but latency-sensitive protocol performance deteriorates

Engineering Contradiction:

Improvenetwork resource utilization efficiencyVSAvoidlatency-sensitive protocol performance

Core Design Contradiction:

ProductivityVSReliability

Solution Approach 1:

The patent divides shared network resources into orthogonal segments (network slices) where capacity-oriented flows and latency-sensitive flows are separated. This segmentation maintains high resource utilization by keeping slices active while preventing performance degradation through isolation of latency-sensitive traffic from capacity-oriented traffic.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent applies local quality by providing different service characteristics to different network slices. Capacity-oriented slices offer high throughput while latency-sensitive slices guarantee low latency, allowing each slice to be optimized for its specific QoS requirements without affecting other slices.

Inventive Principle:

Principle #3Local quality

Data Source

PatentUS12568033B2Method for controlling data transmission by using network slices

Publication Date: 2026.03.03 NOKIA TECHNOLOGIES OY

AI summary

Method of controlling transmission of a data flow in a communication network, comprising defining a quality of service setting for at least one data flow to be transmitted in the communication network, associating at least one network slice to the at least one data flow to be transmitted, wherein the at least one network slice consists of at least one data transport service using communication resources of the communication network, and causing a protected delivery of the at least one data flow by using the associated network slice.