Downlink Control Information Transmission Configuration Indicator Bitmap

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Current wireless communication systems face challenges in efficiently transmitting downlink control information with transmission configuration indicators and spatial information, as existing methods lack a clear and efficient way to indicate which configuration applies to specific channels or resource groups.

Innovation Solution

Incorporating a transmission configuration indicator bitmap field that uses bits to indicate whether the transmission configuration indicator, spatial information, or their combination applies to a channel or resource group, allowing for precise and flexible configuration updates across multiple carriers and resource groups.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If a transmission configuration indicator bitmap field is added to downlink control information, then the precision of indicating configuration applicability to channels and resource groups is improved, but the complexity of the control information structure increases

Engineering Contradiction:

Improveprecision of configuration indicationVSAvoidcontrol information structure complexity

Core Design Contradiction:

Measurement precisionVSDevice complexity

Solution Approach 1:

The configuration indication is segmented into a bitmap format where each bit represents a specific channel or resource group. This allows precise indication of which configurations apply to which resources without creating a complex nested structure, resolving the contradiction by making the indication precision high while keeping the structure simple and scalable.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent changes the parameter representation from traditional explicit listing to a compact bitmap parameter. This parameter transformation enables the system to indicate configuration applicability to multiple channels and resource groups efficiently, achieving high precision with minimal overhead and without increasing structural complexity.

Inventive Principle:

Principle #35Parameter changes

2Adaptability or versatility

If multiple transmission configuration indicators are supported for different carriers and resource groups, then the adaptability of the system is improved, but the difficulty of managing and tracking configurations increases

Engineering Contradiction:

Improvesystem adaptabilityVSAvoidconfiguration management difficulty

Core Design Contradiction:

Adaptability or versatilityVSDifficulty of detecting and measuring

Solution Approach 1:

The bitmap field serves multiple functions simultaneously: it indicates configuration applicability across different carriers, resource groups, and channel types. This universal mechanism allows the system to adapt to various scenarios without requiring separate management procedures for each case, thereby improving adaptability while keeping management complexity low.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The transmission configuration indicator bitmap acts as an intermediary between the downlink control information and the multiple carriers/resource groups. It mediates the configuration application process by providing a clear, bit-level mapping that simplifies tracking and management, reducing the difficulty of managing multiple configurations while maintaining high system adaptability.

Inventive Principle:

Principle #24Intermediary (Mediator)

3Reliability

If downlink control information includes detailed transmission configuration indicators and bitmap fields, then the reliability of configuration application is improved, but the amount of control signaling overhead increases

Engineering Contradiction:

Improveconfiguration application reliabilityVSAvoidcontrol signaling overhead

Core Design Contradiction:

ReliabilityVSQuantity of substance

Solution Approach 1:

Instead of transmitting detailed configuration information for each channel and resource group, the patent uses a compact bitmap that copies the essential indication information in a compressed form. Each bit in the bitmap represents a specific configuration applicability status, providing reliable indication with minimal overhead, thus resolving the contradiction between reliability and signaling quantity.

Inventive Principle:

Principle #26Copying

Data Source

PatentUS20240072981A1Downlink control information having a transmission configuration indicator bitmap

Publication Date: 2024.02.29 LENOVO (BEIJING) LTD

AI summary

Apparatuses, methods, and systems are disclosed for downlink control information having a transmission configuration indicator bitmap. One method (400) includes transmitting (402) downlink control information with a transmission configuration indicator, spatial information, or a combination thereof and a transmission configuration indicator bitmap field. Each bit in the transmission configuration indicator bitmap field indicates whether the transmission configuration indicator, the spatial information, or the combination thereof applies to a channel or resource group.