Multi-Transport Block Scheduling via Unified DCI Structure

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Solution Overview

Problem

Current communication systems face inefficiencies in multi-transport block scheduling, leading to increased network overhead and power consumption due to repeated control channel transmissions, particularly in low-complexity and wide-coverage applications like MTC and NB-IoT, where decoding reliability is crucial.

Innovation Solution

A method for reducing the number of required DCI bits by correlating scheduling parameters and optimizing the interpretation of specific DCI fields, allowing for efficient multi-TB scheduling with reduced network overhead and power consumption, while maintaining decoding reliability.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If separate DCI transmissions are used for each transport block, then scheduling flexibility is improved, but network overhead and power consumption increase

Engineering Contradiction:

Improvescheduling flexibilityVSAvoidpower consumption

Core Design Contradiction:

Adaptability or versatilityVSLoss of energy

Solution Approach 1:

The patent combines multiple DCI transmissions into a single DCI message that schedules multiple transport blocks simultaneously. This merging approach reduces the total number of DCI transmissions, thereby reducing network overhead and power consumption while maintaining the ability to schedule multiple TBs with different parameters through unified resource allocation fields in the combined DCI.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The patent designs a universal DCI structure that can schedule multiple transport blocks with different configurations (different RB allocations, MCS, redundancy versions) using a single DCI message. This multi-functional DCI design allows the system to maintain scheduling flexibility for multiple TBs without requiring separate specialized DCI transmissions for each TB.

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Adaptability or versatility

If separate DCI transmissions are used for each transport block, then scheduling flexibility is improved, but network overhead increases

Engineering Contradiction:

Improvescheduling flexibilityVSAvoidnetwork overhead

Core Design Contradiction:

Adaptability or versatilityVSQuantity of substance

Solution Approach 1:

The patent merges multiple DCI transmissions into a single DCI message that schedules multiple transport blocks simultaneously. This merging approach reduces the total number of DCI transmissions, thereby reducing network overhead while maintaining the ability to schedule multiple TBs with different parameters through unified resource allocation fields in the combined DCI.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

Inventive Principle:

Principle #6Universality (Multi-functionality)

3Reliability

If redundant DCI transmissions are used, then decoding reliability is improved, but power consumption increases

Engineering Contradiction:

Improvedecoding reliabilityVSAvoidpower consumption

Core Design Contradiction:

ReliabilityVSLoss of energy

Solution Approach 1:

The patent combines multiple DCI transmissions into a single DCI message that schedules multiple transport blocks simultaneously. This merging approach reduces the total number of DCI transmissions, thereby reducing power consumption while maintaining decoding reliability through the unified structure that provides consistent scheduling information for all scheduled TBs.

Inventive Principle:

Principle #5Merging (Combining)

4Reliability

If redundant DCI transmissions are used, then decoding reliability is improved, but network overhead increases

Engineering Contradiction:

Improvedecoding reliabilityVSAvoidnetwork overhead

Core Design Contradiction:

ReliabilityVSQuantity of substance

Solution Approach 1:

The patent merges multiple DCI transmissions into a single DCI message that schedules multiple transport blocks simultaneously. This merging approach reduces the total number of DCI transmissions, thereby reducing network overhead while maintaining decoding reliability through the unified structure that provides consistent scheduling information for all scheduled TBs.

Inventive Principle:

Principle #5Merging (Combining)

Data Source

PatentUS12069642B2Method and device for transmission or reception of signal for multiple transport block scheduling

Publication Date: 2024.08.20 LG ELECTRONICS INC

AI summary

The present invention relates to a method performed in a wireless communication system supporting multiple transport block scheduling, and a device therefor, the method comprising: receiving downlink control information (DCI) for scheduling of one or more transport blocks; on the basis of the number of the transport blocks to be scheduled, which is one, acquiring 2-bit information for a redundancy version of one transport block and 1-bit information for frequency hopping indication of the one transport block, from the DCI; and on the basis of the number of the transport blocks to be scheduled, which is two, acquiring 2-bit information for frequency hopping indication and a redundancy version of two transport blocks, from the DCI.