Terminal Measurement Configuration Release in MR-DC

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Solution Overview

Problem

The complexity of protocol processing in Multi-RAT Dual Connectivity (MR-DC) systems, particularly due to differences in communication protocols and core networks between E-UTRA and NR, hinders efficient communication between terminal apparatuses and base station apparatuses.

Innovation Solution

A terminal apparatus and base station apparatus implementation that includes a receiver and controller for receiving and processing measurement configuration messages, allowing for the efficient release of measurement configurations associated with MR-DC, thereby simplifying protocol processing and communication.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If MR-DC is implemented to enable communication with multiple RATs (E-UTRA and NR), then the adaptability and versatility of the terminal apparatus is improved, but the device complexity and protocol processing complexity increase

Engineering Contradiction:

ImproveMulti-RAT communication capabilityVSAvoidProtocol processing complexity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent extracts and separates the measurement configuration management for secondary cell groups from the overall MR-DC protocol processing. By independently managing measurement configurations associated with secondary cell groups and allowing their separate release when MR-DC is released, the complex protocol processing is decomposed into manageable parts, reducing the overall processing complexity while maintaining multi-RAT capabilities

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The patent segments the measurement configuration into different parts: measurement configurations for primary cell groups and measurement configurations for secondary cell groups. This segmentation allows selective release of secondary cell group measurement configurations when MR-DC is released, while preserving primary cell group configurations, thereby simplifying protocol processing without compromising adaptability

Inventive Principle:

Principle #1Segmentation

2Measurement precision

If measurement configuration is maintained for secondary cell groups in MR-DC, then the measurement precision and communication reliability is improved, but the loss of time and processing overhead increases

Engineering Contradiction:

ImproveMeasurement accuracy for secondary cell groupsVSAvoidProtocol processing time

Core Design Contradiction:

Measurement precisionVSLoss of time

Solution Approach 1:

The patent implements dynamic management of measurement configurations by conditionally maintaining them based on MR-DC status. When MR-DC is active, measurement configurations for secondary cell groups are maintained for accurate measurements. When MR-DC is released, these configurations are automatically released, optimizing processing time. This dynamic approach ensures measurement precision is maintained only when necessary, reducing unnecessary processing overhead

Inventive Principle:

Principle #15Dynamics

Data Source

PatentUS20220038929A1Terminal device, base station device, method, and integrated circuit

Publication Date: 2022.02.03 SHARP KK

AI summary

A terminal apparatus includes a receiver configured to receive a first message and a controller configured to perform a measurement based on a measurement configuration included in the first message. The measurement configuration is associated with a secondary cell group. The controller releases the measurement configuration based on a release of Multi Radio access technology (RAT)-Dual Connectivity (MR-DC).