BWP Configuration for Common Downlink Communication
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Solution Overview
Problem
Current communication systems face challenges in configuring efficient transmission resources for common downlink communication in new radio (NR) systems, particularly in supporting high-frequency bands and various communication scenarios like eMBB, URLLC, and mMTC, where existing methods lack effective methods for configuring common transmission resources for multiple terminals.
Innovation Solution
The proposed solution involves configuring a common frequency region based on bandwidth part (BWP) configuration information received from the base station, using downlink control information (DCI) with scheduling information scrambled by a common radio network temporary identifier (RNTI), and performing rate-matching for downlink data transmission, with fallback options to CORESET0 or initial BWP when necessary.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If common transmission resources are configured for multiple terminals in NR systems, then communication efficiency for broadcast scenarios is improved, but resource configuration complexity increases
Solution Approach 1:
The patent segments the downlink bandwidth into multiple bandwidth parts (BWPs), where each BWP can be independently configured for common transmission. This allows the system to divide the overall resource configuration task into smaller, manageable BWP-level configurations, reducing the complexity of managing common resources across the entire bandwidth while maintaining communication efficiency.
Solution Approach 2:
The patent enables dynamic switching between different BWPs for common transmission based on traffic requirements and channel conditions. The base station can activate or deactivate specific BWPs for common communication, allowing the system to adapt resource allocation dynamically without reconfiguring the entire downlink bandwidth, thus improving communication efficiency while controlling configuration complexity.
2Adaptability or versatility
If bandwidth part configuration is used for common downlink communication, then frequency resource allocation flexibility is improved, but control signaling overhead increases
Solution Approach 1:
The patent makes BWPs multi-functional by enabling them to serve both individual terminal communication and common broadcast communication. The same BWP configuration can be reused for different purposes (unicast and multicast/broadcast), reducing the need for separate dedicated common transmission resources and thereby lowering control signaling overhead while maintaining frequency resource allocation flexibility.
Solution Approach 2:
The patent allows unused or deactivated BWPs to be discarded for individual communication and recovered/reallocated for common transmission when needed. This dynamic allocation enables the system to flexibly reuse BWP configurations for common downlink communication without permanently dedicating specific resources, reducing overall signaling overhead while preserving allocation flexibility.
Data Source
AI summary
An operation method of a terminal in a communication system may comprise: performing a monitoring operation to receive BWP configuration information for common downlink communication; in response to receiving the BWP configuration information from the base station, configuring a common frequency region for the common downlink communication based on the BWP configuration information; receiving DCI including scheduling information of the common downlink communication from the base station; and performing the common downlink communication with the base station in the common frequency region by using a frequency resource indicated by the scheduling information, wherein the common downlink communication is communication between the base station and a plurality of terminals including the terminal.