Terminal Device Type0-PDCCH CSS Configuration for Flexible Scheduling

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Solution Overview

Problem

The existing wireless communication systems face limitations in flexibility and efficiency due to invalid or less flexible scheduling configurations for Type0-PDCCH CSS sets when adopting higher subcarrier spacing, which affects communication efficiency.

Innovation Solution

The implementation of OFDM (Orthogonal Frequency Division Multiplexing) with specific configurations, including CP-OFDM and DFT-s-OFDM, in both downlink and uplink, along with optimized resource grid configurations and subcarrier-spacing settings, to enhance communication flexibility and efficiency.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If higher subcarrier spacing is adopted, then communication efficiency is improved, but scheduling flexibility deteriorates due to invalid configurations for Type0-PDCCH CSS sets

Engineering Contradiction:

Improvecommunication efficiencyVSAvoidscheduling flexibility

Core Design Contradiction:

ProductivityVSAdaptability or versatility

Solution Approach 1:

The patent applies dynamics by making the scheduling configuration adaptive rather than static. The Type0-PDCCH CSS set configuration is made dynamic by allowing the monitoring occasion to be flexibly determined based on the association between SS/PBCH block indexes and PRACH occasions, enabling the system to adapt to different subcarrier spacing configurations while maintaining scheduling flexibility.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The patent utilizes parameter changes by modifying the scheduling configuration parameters based on subcarrier spacing. By changing the association parameters between SS/PBCH blocks and PRACH occasions, the system can optimize communication efficiency for higher subcarrier spacing while preserving scheduling flexibility through configurable monitoring occasions.

Inventive Principle:

Principle #35Parameter changes

2Adaptability or versatility

If OFDM with optimized configurations is implemented, then resource allocation flexibility is improved, but system complexity increases

Engineering Contradiction:

Improveresource allocation flexibilityVSAvoidsystem complexity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent applies universality by designing a multi-functional OFDM framework that supports both CP-OFDM and DFT-s-OFDM waveforms, as well as multiple subcarrier spacing configurations. This universal approach allows the same base configuration to serve multiple purposes across different communication scenarios, improving resource allocation flexibility while managing system complexity through standardized procedures.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The patent utilizes segmentation by dividing the resource allocation into configurable components: separate configuration for SS/PBCH blocks, separate PRACH occasions, and separate monitoring occasions for Type0-PDCCH CSS sets. This segmented approach allows independent optimization of each component, providing resource allocation flexibility without overwhelming system complexity.

Inventive Principle:

Principle #1Segmentation

Data Source

PatentUS12199914B2Terminal devices and base station devices

Publication Date: 2025.01.14 SHARP KK

AI summary

Terminal device receives a SS/PBCH block with an odd index and a PDCCH in a Type0-PDCCH CSS set. A predefined table provides configurations for the Type0-PDCCH CSS set. The first symbol index is NCORESETsymb in a first row, and the first symbol index is NCORESETsymb+Ngapsymb in a second row. The first row and the second row are different rows in the predefined table.