Bandwidth Part Indicator for Downlink Control Information
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Solution Overview
Problem
The 5G wireless communication system faces challenges in efficiently transmitting downlink control information across various signal transmission and reception operations due to the need for flexible management of bandwidth parts, which is not adequately supported by existing systems, leading to increased power consumption and complexity in managing different transmission and reception bandwidths.
Innovation Solution
The system introduces a method and apparatus for transmitting downlink control information by configuring multiple bandwidth parts with different system parameters, such as subcarrier spacing, bandwidth size, and slot duration, allowing for efficient power management and flexible resource allocation through the use of a bandwidth part indicator, frequency domain resource assignment, and time domain resource assignment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple bandwidth parts with different system parameters are configured for flexible resource allocation, then adaptability and resource allocation flexibility are improved, but device complexity and power consumption increase
Solution Approach 1:
The patent divides the overall bandwidth into multiple bandwidth parts (BWP), each with independent system parameters such as subcarrier spacing, cyclic prefix length, and bandwidth size. This segmentation allows different BWPs to be optimized for different service types (e.g., eMBB, URLLC, mMTC) while reducing the complexity of managing all parameters globally, as each BWP can be independently configured and activated.
Solution Approach 2:
The patent introduces dynamic BWP switching capability, where the network can activate or deactivate specific BWPs based on service requirements. The terminal device can dynamically switch between different BWPs without reconfiguration, allowing flexible adaptation to varying traffic demands while maintaining manageable complexity through standardized switching procedures.
2Adaptability or versatility
If multiple bandwidth parts with different system parameters are configured for flexible resource allocation, then adaptability and resource allocation flexibility are improved, but power consumption increases
Solution Approach 1:
Instead of requiring the terminal to continuously monitor and process all configured bandwidth parts, the patent allows the terminal to focus processing resources only on the currently activated BWP. The terminal can partially monitor other BWPs based on scheduling indications, reducing overall processing load and power consumption while maintaining the ability to quickly switch when needed.
Solution Approach 2:
The patent implements BWP deactivation functionality where inactive BWPs are effectively discarded from active monitoring and processing. When a BWP is deactivated, the terminal stops monitoring control channels and processing data in that BWP, significantly reducing power consumption. The BWP configuration is retained but not actively processed, allowing rapid recovery and reactivation when needed without full reconfiguration overhead.
Data Source
AI summary
The 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). A method of a user equipment is provided. The method includes identifying a first bandwidth part for a cell and a second bandwidth part for the cell through radio resource control signaling; identifying a first control resource set on the first bandwidth part and a second control resource set on the second bandwidth part through the radio resource control signaling; and acquiring downlink control information for the second bandwidth part based on the first control resource set on the first bandwidth part being activated. A bandwidth part indicator, a frequency domain resource assignment, and a time domain resource assignment are included in the downlink control information.