PDCCH Search Space Configuration for Flexible Control Signaling

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Solution Overview

Problem

Existing wireless communication systems face inefficiencies in resource utilization, particularly in the control signaling design for 5G/NR mobile communications, which affect the capacity and performance of base stations and user equipment.

Innovation Solution

Implementing a control signaling design that allows for flexible PDCCH reception and transmission configurations based on specific symbol pairs (X1, Y1) and (X2, Y2), where Y1 < X1 < X2, with adjusted maximum numbers of PDCCHs within Y1 and Y2 symbols, and utilizing search space sets for optimized resource allocation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If the maximum number of PDCCH receptions is increased to improve resource utilization, then the capacity and performance of wireless networks improve, but the complexity of control signaling design increases

Engineering Contradiction:

Improveresource utilizationVSAvoidcontrol signaling design

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

The patent segments the control signaling design by introducing multiple parameter pairs (X1, Y1) and (X2, Y2) that divide the time-frequency resource space into different monitoring patterns. This allows the system to handle increased PDCCH receptions through structured segmentation rather than monolithic design, resolving the contradiction between resource utilization and signaling complexity.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent implements dynamic adaptability by allowing the UE to support multiple (X, Y) parameter pairs and enabling the network to dynamically select and configure appropriate pairs based on current resource utilization needs. This dynamic approach allows the system to scale PDCCH reception capacity while maintaining manageable control signaling complexity through on-demand configuration.

Inventive Principle:

Principle #15Dynamics

2Adaptability or versatility

If multiple PDCCH reception patterns are supported to improve flexibility, then the adaptability to different service requirements improves, but the device complexity increases

Engineering Contradiction:

ImproveflexibilityVSAvoidUE capability

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent applies universality by designing a multi-functional UE capability that can handle multiple (X, Y) parameter pairs and different PDCCH monitoring patterns through a unified framework. The UE is designed to universally support various service requirements by interpreting and adapting to different configured patterns, thereby achieving high flexibility without proportionally increasing complexity through standardized multi-functional design.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Data Source

PatentUS20250365750A1Control signaling design for improved resource utilization

Publication Date: 2025.11.27 SAMSUNG ELECTRONICS CO LTD

AI summary

Methods and apparatuses for PDCCH reception and transmission. A method for PDCCH reception includes transmitting a capability for receptions of PDCCHs on a downlink (DL) cell. PDCCH receptions on the DL cell are according to (X1, Y1) or (X2, Y2) when any two PDCCH receptions are within Y1 or Y2 symbols or have first symbols separated by at least X1 or X2 symbols, respectively. The method further includes receiving a configuration of search space sets for PDCCH receptions on the DL cell; determining, based on the configuration of the search space sets, whether PDCCH receptions are according to (X2, Y2); and receiving on the DL cell: a maximum number ofMPDCCHma⁢x, X1, μPDCCHs within Y1 symbols when PDCCH receptions are not according to (X2, Y2), and a maximum number ofMPDCCHma⁢x, X2, μPDCCHs within Y2 symbols when PDCCH receptions are according to (X2, Y2).