Hybrid QoS Flow Mapping for L2 and L3 Wireless Relaying

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Solution Overview

Problem

Existing wireless communication systems face increased complexity due to the need to handle diverse traffic requirements using both Layer 2 and Layer 3 relaying schemes, necessitating multiple SDAP entities and separate QoS flows, which complicates the relaying process.

Innovation Solution

Implementing a hybrid QoS flow that combines QoS parameters for both Layer 2 and Layer 3 relaying schemes, allowing a single SDAP entity to handle both sidelink and Uu protocol stacks, thereby reducing complexity and enabling seamless communication.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If separate QoS flows are used for Layer 2 and Layer 3 relaying schemes, then QoS requirements for different relaying schemes can be handled independently, but device complexity increases due to multiple SDAP entities

Engineering Contradiction:

ImproveQoS handling capabilityVSAvoidSDAP entity quantity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent combines separate QoS flows for L2 and L3 relaying into a single hybrid QoS flow. The SDAP entity maps data packets to this hybrid flow using a hybrid QoS flow identifier that encapsulates both L2 and L3 QoS parameters, eliminating the need for separate SDAP entities for each relaying scheme while maintaining independent QoS handling capability

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The hybrid QoS flow design enables a single SDAP entity to perform multiple functions by handling both L2 and L3 relaying QoS requirements through one unified flow. The hybrid QoS flow identifier serves as a universal key that routes packets appropriately based on the relaying scheme without requiring separate specialized entities

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Reliability

If multiple separate QoS flows are implemented for different relaying schemes, then traffic requirements can be precisely controlled, but the relaying process becomes more complex

Engineering Contradiction:

ImproveQoS parameter controlVSAvoidRelaying process complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent merges multiple separate QoS flows into a single hybrid QoS flow that carries both L2 and L3 QoS parameters. This consolidation maintains precise QoS control through the hybrid identifier while simplifying the relaying process by reducing the number of separate flow management operations required

Inventive Principle:

Principle #5Merging (Combining)

3Adaptability or versatility

If separate SDAP entities are used for sidelink and Uu protocol stacks, then protocol-specific QoS requirements are met, but system complexity increases

Engineering Contradiction:

ImproveProtocol stack compatibilityVSAvoidSDAP entity configuration

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent creates a universal hybrid QoS flow that works across both sidelink and Uu protocol stacks. A single SDAP entity configured with hybrid QoS parameters can handle traffic for both protocol stacks, eliminating the need for separate SDAP entities while maintaining protocol-specific QoS requirements through the hybrid identifier mapping

Inventive Principle:

Principle #6Universality (Multi-functionality)

Data Source

PatentEP4349042B1Hybrid quality of service flow

Publication Date: 2026.04.01 KONINKLIJKE PHILIPS NV

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AI summary

An apparatus for a wireless communication network is described. The apparatus is to transmit a data packet to a destination in the wireless communication network via one or more relay devices using a first relaying scheme, like layer 2, L2, relaying, or using a second relaying scheme, like layer 3, L3, relaying. The apparatus is to map the data packet to a hybrid Quality of Service, QoS, flow between the apparatus and the destination, the hybrid 1 QoS flow including QoS parameters for the first relaying scheme and for the second relaying scheme.