Uplink Control Channel Resource Configuration in 5G Wireless Systems
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Solution Overview
Problem
Next-generation mobile communication systems, such as 5G, require flexibility in time and frequency resource utilization, particularly in control channel design to support diverse services like enhanced mobile broadband, massive machine-type communications, and ultra-reliable and low-latency communications, which existing systems struggle to achieve effectively.
Innovation Solution
A method and apparatus for configuring uplink control channel transmission resources in a wireless communication system, involving the reception and transmission of configuration information on bandwidth parts (BWPs), adaptation of active BWP, and identification of uplink control channel resources for acknowledgement information, enabling flexible resource allocation and efficient communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If flexible bandwidth parts (BWPs) are introduced to support diverse services, then adaptability to different service requirements is improved, but device complexity increases due to multiple configuration parameters and dynamic switching mechanisms
Solution Approach 1:
The patent divides the total bandwidth into multiple smaller bandwidth parts (BWPs), each optimized for specific services. This segmentation allows the system to allocate different bandwidth portions to different services (e.g., narrow BWP for mMTC, wide BWP for eMBB), thereby improving adaptability while managing complexity through structured organization of resources
Solution Approach 2:
The patent implements dynamic BWP switching mechanisms that allow the terminal to transition between different bandwidth parts based on service requirements. The base station can dynamically indicate active BWP changes, enabling flexible adaptation to varying service demands while maintaining a manageable complexity level through standardized switching procedures
2Productivity
If dynamic BWP adaptation is implemented to optimize resource utilization, then productivity is improved through efficient bandwidth management, but loss of time occurs during BWP switching transitions
Solution Approach 1:
The patent configures multiple BWPs in advance with predetermined parameters (subcarrier spacing, cyclic prefix, bandwidth) before actual switching is needed. This preliminary configuration allows the terminal to quickly transition between BWPs without performing complex reconfiguration during switching, thereby reducing transition time while maintaining high resource utilization efficiency
Solution Approach 2:
The base station provides feedback information (via Downlink Control Information) to indicate the active BWP to the terminal. This feedback mechanism enables efficient BWP adaptation by ensuring the terminal knows exactly which BWP to activate, minimizing uncertainty and transition time while optimizing resource allocation based on real-time service demands
3Adaptability or versatility
If multiple BWPs are configured to support various services, then adaptability is improved, but use of energy increases due to additional configuration processing and monitoring requirements
Solution Approach 1:
The patent extracts and configures BWP-specific parameters (subcarrier spacing, cyclic prefix type, bandwidth) as separate, manageable elements. By taking out these configuration details into distinct BWP definitions, the system can efficiently manage multiple service types without requiring excessive processing energy, as each BWP is a self-contained configuration unit that can be independently managed
Data Source
AI summary
The present disclosure relates to a communication method and system for converging a 5th-Generation (5G) communication system for supporting higher data rates beyond a 4th-Generation (4G) system with a technology for Internet of Things (IoT). The present disclosure may be applied to intelligent services based on the 5G communication technology and the IoT-related technology, such as smart home, smart building, smart city, smart car, connected car, health care, digital education, smart retail, security and safety services. A method for transmitting uplink control information in a wireless communication system is provided. The method includes receiving configuration information on a plurality of bandwidth parts (BWPs) from a base station; receiving downlink control information and downlink data from the base station; receiving BWP adaptation information which indicates a change of an active BWP from the base station; identifying an uplink control channel resource for transmitting acknowledgement information in response to the downlink data; and transmitting the acknowledgement information on the identified uplink control channel resource to the base station.