Single DCI Scheduling Multiple UL-SCH Across Time and Frequency

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Solution Overview

Problem

Current wireless communication systems face inefficiencies in scheduling multiple uplink shared channels across time and frequency due to increased power expenditures, system latency, and signaling overhead when using multiple DCIs for full-duplex operations.

Innovation Solution

Implementing a single downlink control information (DCI) that schedules multiple transmissions across time and frequency, using both time domain resource allocation (TDRA) and frequency domain resource allocation (FDRA) tables, allowing the user equipment (UE) to interpret and adjust transmissions based on thresholds and prioritization.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If multiple DCIs are used to schedule multiple uplink shared channels, then scheduling flexibility is improved, but power expenditure and system latency increase

Engineering Contradiction:

Improvescheduling flexibilityVSAvoidpower expenditure

Core Design Contradiction:

Adaptability or versatilityVSUse of energy by moving object

Solution Approach 1:

The patent combines multiple separate DCIs into a single DCI that schedules multiple uplink shared channels. This merging approach maintains scheduling flexibility while reducing the number of control information messages transmitted, thereby decreasing power expenditure and system latency associated with processing and transmitting multiple separate DCIs.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The single DCI is designed with multi-functional capabilities to schedule multiple uplink shared channels across different time slots and frequency resources. This universal DCI structure performs the functions previously requiring multiple specialized DCIs, maintaining adaptability while reducing overall system overhead and power consumption.

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Adaptability or versatility

If multiple DCIs are used to schedule multiple uplink shared channels, then scheduling flexibility is improved, but signaling overhead increases

Engineering Contradiction:

Improvescheduling flexibilityVSAvoidsignaling overhead

Core Design Contradiction:

Adaptability or versatilityVSQuantity of substance

Solution Approach 1:

The patent merges multiple DCI structures into a single integrated DCI that contains scheduling information for multiple uplink shared channels. This consolidation reduces the total amount of signaling overhead by eliminating redundant control information while preserving the scheduling flexibility needed for flexible resource allocation.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The single DCI uses extended fields and structured formatting to encode scheduling information for multiple channels in a compact manner. By efficiently organizing the scheduling data in a multi-dimensional format within a single message, the patent reduces signaling overhead while maintaining comprehensive scheduling capabilities.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

3Use of energy by moving object

If a single DCI schedules multiple transmissions, then power consumption decreases, but scheduling complexity increases

Engineering Contradiction:

Improvepower consumptionVSAvoidscheduling complexity

Core Design Contradiction:

Use of energy by moving objectVSDevice complexity

Solution Approach 1:

The single DCI is segmented into structured fields that organize scheduling information for multiple uplink shared channels in a systematic manner. This segmentation approach reduces scheduling complexity by breaking down the complex scheduling task into manageable components, making it easier for the UE to process and execute the scheduling instructions while maintaining low power consumption.

Inventive Principle:

Principle #1Segmentation

4Productivity

If multiple transmissions are scheduled across time and frequency, then communication efficiency is improved, but system latency increases

Engineering Contradiction:

Improvecommunication efficiencyVSAvoidsystem latency

Core Design Contradiction:

ProductivityVSLoss of time

Solution Approach 1:

The single DCI performs preliminary scheduling of multiple uplink shared channels across different time slots and frequency resources in advance. By pre-allocating and signaling all scheduling details in a single control message, the system eliminates the latency associated with sequential scheduling decisions and reduces the time required for resource allocation while maintaining high communication efficiency.

Inventive Principle:

Principle #10Preliminary action

Data Source

PatentUS20240129925A1Single downlink control information scheduling multiple uplink shared channels across time and frequency

Publication Date: 2024.04.18 QUALCOMM INC

AI summary

A user equipment (UE) may receive, from a network entity, control signaling and a control message. The control signaling may indicate resource allocation tables, including a frequency resource allocation table supporting multiple transmissions across multiple frequency bands corresponding to a single control message and a time resource allocation table supporting multiple transmissions across multiple time intervals corresponding to the single control message. The control message may schedule multiple messages, including a frequency domain resource allocation (FDRA) field and a time domain resource allocation (TDRA) field indicating multiple frequency bands and one or more time intervals according to the time resource allocation table and the frequency resource allocation table. The UE and the network entity may communicate, via the frequency bands and one or more time intervals, multiple wireless messages according to the FDRA and the TDRA.