Wireless Control Information Transmission Using Interruption Indicators
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Solution Overview
Problem
In wireless communication systems, particularly in 5G networks, there is a challenge in smoothly providing multiple services such as eMBB, mMTC, and URLLC simultaneously, as existing technologies face difficulties in managing resource allocation and interference, leading to potential data loss and reduced transmission performance when different services share the same frequency bands.
Innovation Solution
A method and apparatus that allow for effective transmission and reception of control information by using interruption indicators to manage resource allocation dynamically, enabling the terminal to adjust HARQ ACK/NACK transmission resources based on reception times and interruption indicators, thereby minimizing interference and ensuring reliable data transmission for coexisting services.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple services (eMBB, mMTC, URLLC) share the same frequency bands, then resource utilization efficiency is improved, but interference between services increases and transmission reliability deteriorates
Solution Approach 1:
The patent segments the frequency spectrum into different bandwidth parts (BWPs), where each BWP is dedicated to specific services or service types. This segmentation allows different services to operate in isolated frequency regions, reducing inter-service interference while maintaining high resource utilization. Each BWP can be independently configured and managed, enabling reliable transmission for critical services like URLLC while efficiently utilizing resources for data-intensive services like eMBB.
2Adaptability or versatility
If dynamic resource allocation is implemented for multiple services, then service adaptability is improved, but system complexity increases
Solution Approach 1:
The patent implements dynamic resource allocation through configurable bandwidth parts (BWPs) that can be adaptively adjusted based on service requirements. Each service can be assigned specific BWPs with appropriate bandwidth, subcarrier spacing, and cyclic prefix configurations. The system dynamically selects and switches between different BWP configurations to match varying service demands, providing high adaptability while maintaining manageable complexity through standardized configuration frameworks.
3Reliability
If interruption indicators are used to manage resource allocation, then transmission performance is improved, but control overhead increases
Solution Approach 1:
The patent merges the interruption indicator function with existing downlink control information (DCI) structures. The interruption indicator is integrated into the DCI format used for scheduling assignments, allowing the system to convey both scheduling information and interruption indicators together. This merging approach reduces control overhead by utilizing existing control channel resources rather than introducing separate dedicated signaling mechanisms, thereby improving transmission performance while minimizing additional control information burden.
Data Source
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AI summary
Provided are a method and apparatus for transmitting and receiving control information in a wireless communication system, wherein the method, performed by a terminal, of transmitting and receiving control information according to an embodiment includes: receiving first type data; receiving second type data assigned to at least a part of a resource region assigned to the first type data; receiving an interruption indicator; and performing a hybrid automatic repeat request (HARQ) acknowledgement (ACK)/negative ACK (NACK) transmission regarding the first type data based on the interruption indicator.