Dynamic DCI Configuration for Multi-Bandwidth Part 5G Systems
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Solution Overview
Problem
Current communication systems lack a configuration solution for Downlink Control Information (DCI) that supports multiple bandwidth parts and dynamic slot formats, particularly in new-generation communication systems.
Innovation Solution
A method and device for configuring DCI that includes sending Physical Downlink Control Channel (PDCCH) bearing target DCI from a base station to a terminal, which includes control information for target time-domain transmission units on specified bandwidth parts, allowing the terminal to execute corresponding control operations on indicated bandwidth parts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If DCI uses fixed length value determined by carrier bandwidth, then the structure is simple and easy to implement, but it cannot support multiple bandwidth parts and dynamic slot formats
Solution Approach 1:
The patent applies dynamics by making the DCI format adaptable and configurable rather than fixed. The base station can dynamically configure DCI parameters including bandwidth part indicators and slot format information according to different transmission scenarios, enabling the system to support multiple bandwidth parts and dynamic slot formats while maintaining implementation feasibility through standardized configuration procedures
Solution Approach 2:
The patent changes key DCI parameters to enable multi-bandwidth part support. Specifically, it introduces configurable bandwidth part indicators, flexible slot format information fields, and adjustable DCI length values that can be adapted to different carrier bandwidths and bandwidth part configurations, transforming the fixed DCI structure into a flexible one that supports diverse transmission requirements
2Adaptability or versatility
If GC-PDCCH is used to indicate slot formats on multiple bandwidth parts, then slot format indication capability is improved, but there is no existing DCI configuration solution
Solution Approach 1:
The patent applies universality by designing a DCI configuration framework that serves multiple functions: it can indicate slot formats, support multiple bandwidth parts, and provide resource allocation information all within a unified DCI structure. The base station configures DCI to include bandwidth part indicators and slot format information fields that can be universally applied across different transmission scenarios and bandwidth configurations
Solution Approach 2:
The patent segments the DCI structure into functional fields including bandwidth part indicators, slot format information, and resource allocation fields. This segmentation allows each field to be independently configured and interpreted, enabling the DCI to simultaneously support multiple bandwidth parts and dynamic slot formats while maintaining clear structure and ease of processing
Data Source
AI summary
A method for configuring downlink control information includes: configuring target downlink control information (DCI) for a terminal, the target DCI including control information required by at least one target time-domain transmission unit on at least one target bandwidth portion; and transmitting to the terminal a physical downlink control channel (PDCCH) carrying the target DCI, the target DCI being used by the terminal to perform a corresponding control operation on the target time-domain transmission unit of the indicated target bandwidth portion. As such, a base station can configure for the terminal the control information required by the at least one target time-domain transmission unit on the at least one target bandwidth part, thereby improving the performance of a 5G system.