Ad-hoc Radio Bearer Inline Signaling via SDAP Layer

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Solution Overview

Problem

Legacy 3GPP networks face challenges in reconfiguring radio bearers during operation due to high latency and power consumption, as existing signaling methods require extensive communication and large message exchanges, impacting efficiency and user equipment performance.

Innovation Solution

The introduction of an ad-hoc radio bearer system with inline signaling via the Service Data Adaptation Protocol (SDAP) layer, where SDAP labels and headers are used for ad-hoc setup, reconfiguration, and release of radio bearers, allowing for more efficient QoS mapping and reduced signaling overhead by moving the SDAP layer below the Radio Link Control (RLC) layer.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Loss of time

If legacy signaling methods are used for radio bearer reconfiguration, then communication reliability is maintained, but latency increases and power consumption rises

Engineering Contradiction:

ImprovelatencyVSAvoidcommunication reliability

Core Design Contradiction:

Loss of timeVSReliability

Solution Approach 1:

The patent extracts the radio bearer reconfiguration signaling from the legacy RRC layer and relocates it to the SDAP layer. This allows the reconfiguration signaling to be embedded within existing data packets rather than requiring separate signaling messages, thereby reducing latency while maintaining reliability through the proven SDAP protocol infrastructure.

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The patent merges the radio bearer reconfiguration signaling with regular data transmission by embedding SDAP headers and labels within data packets. This consolidation eliminates the need for separate signaling exchanges, reducing both latency and power consumption while maintaining communication reliability through the integrated approach.

Inventive Principle:

Principle #5Merging (Combining)

2Use of energy by moving object

If extensive signaling communication is used for radio bearer setup and reconfiguration, then configuration accuracy is ensured, but power consumption increases

Engineering Contradiction:

Improvepower consumptionVSAvoidconfiguration accuracy

Core Design Contradiction:

Use of energy by moving objectVSManufacturing precision

Solution Approach 1:

The patent implements preliminary action by pre-defining radio bearer configurations at the SDAP layer before actual data transmission begins. The SDAP headers and labels are prepared in advance with all necessary configuration information, allowing the radio bearer to be quickly activated without extensive runtime signaling, thereby reducing power consumption while ensuring configuration accuracy.

Inventive Principle:

Principle #10Preliminary action

3Productivity

If traditional radio bearer reconfiguration methods are used, then system stability is maintained, but communication efficiency decreases

Engineering Contradiction:

Improvecommunication efficiencyVSAvoidsystem stability

Core Design Contradiction:

ProductivityVSStability of the object's composition

Solution Approach 1:

The patent introduces dynamics by enabling flexible and adaptive radio bearer reconfiguration through SDAP layer signaling. The system can dynamically adjust radio bearer parameters based on real-time QoS requirements embedded in the SDAP headers, improving communication efficiency while maintaining system stability through controlled and standardized reconfiguration procedures.

Inventive Principle:

Principle #15Dynamics

Data Source

PatentUS20230379753A1Ad-hoc radio bearer and inline signalling with layer arrangment

Publication Date: 2023.11.23 APPLE INC

AI summary

The present application relates to devices and components including apparatus, systems, and methods to provide ad-hoc radio bearers with different layer arrangements and headers for the layers.