Group Scheduling DCI for Radio Resource Control Overhead

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Solution Overview

Problem

Current communication systems face challenges in efficiently managing radio resources and scheduling in environments with high concentrations of user equipment (UEs), particularly in adapting to changing wireless channel states and data transmission requirements.

Innovation Solution

The implementation of a group scheduling method and device that allows for the creation of radio resource groups for multiple UEs, enabling dynamic activation or deactivation of resources based on UE channel states and movement, and providing group scheduling information using a single Downlink Control Indicator (DCI) to optimize resource allocation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If individual scheduling is used for each UE, then scheduling precision is improved, but control information overhead increases significantly

Engineering Contradiction:

Improvescheduling precisionVSAvoidcontrol information overhead

Core Design Contradiction:

Measurement precisionVSQuantity of substance

Solution Approach 1:

The patent combines multiple UEs into a UE group and uses a single group scheduling DCI to schedule resources for multiple UEs simultaneously. This merging approach reduces control information overhead by transmitting one scheduling message instead of multiple individual scheduling messages, while still providing precise resource allocation through group-specific resource indication fields.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The patent segments the control information structure into group-level scheduling fields and UE-specific fields. The group scheduling DCI contains common resource allocation information for the group, while individual UEs use their specific RNTI values and configured parameters to determine their exact resource assignments, achieving both reduced overhead and precise scheduling.

Inventive Principle:

Principle #1Segmentation

2Quantity of substance

If group scheduling is implemented, then control information overhead is reduced, but adaptability to individual UE channel states decreases

Engineering Contradiction:

Improvecontrol information overheadVSAvoidadaptability to UE channel states

Core Design Contradiction:

Quantity of substanceVSAdaptability or versatility

Solution Approach 1:

The patent implements dynamic adaptability within group scheduling by allowing the base station to form different UE groups based on current channel conditions, traffic patterns, and UE locations. Groups can be dynamically created, modified, or dissolved, and scheduling parameters can be adjusted per group to match prevailing channel states, maintaining adaptability while reducing overhead.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The patent applies local quality by configuring different scheduling parameters, resource allocation patterns, and modulation schemes for different UE groups based on their specific channel characteristics. Each group receives customized scheduling treatment appropriate to its local radio conditions, while still benefiting from the overhead reduction of group-based scheduling.

Inventive Principle:

Principle #3Local quality

3Productivity

If radio resources are allocated dynamically, then system performance is improved, but complexity of resource management increases

Engineering Contradiction:

Improvesystem performanceVSAvoidcomplexity of resource management

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

The patent creates a universal group scheduling framework that handles multiple functions through a single DCI structure. The group scheduling mechanism can simultaneously manage resource allocation, modulation and coding scheme selection, and resource indication for multiple UEs, reducing the complexity of managing these functions separately while maintaining high system performance through dynamic adaptation.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Data Source

PatentUS20230164767A1Operating methods of base station and user equipment in communication system and user equipment

Publication Date: 2023.05.25 ELECTRONICS & TELECOMM RES INST

AI summary

An operating method of a base station in a communication system may comprise: providing group resource control (GRC) configuration information including at least one piece of group resource control assignment (GRCA) set information including at least one piece of GRCA information to at least one piece of user equipment (UE) belonging to a UE group; providing GRCA activation control information including one or more pieces of activated GRCA information selected from a GRCA set and one or more pieces of group scheduling indicator (GSI) information indicating the selected one or more pieces of activated GRCA information to the at least one UE; and providing group scheduling information including at least one piece of GSI information selected from the one or more pieces of GSI information to the at least one UE.