URLLC Control Information Detection in 5G Time-Frequency Resources
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Solution Overview
Problem
In 5G mobile communications, existing methods for receiving URLLC data face challenges in detecting control information efficiently, leading to high latency due to the integration of URLLC data and control information within the data region of time-frequency resources allocated to eMBB data, which hinders fast and accurate data reception.
Innovation Solution
A method that uses a single Resource Element (RE) in each symbol to indicate the presence of URLLC control information, reducing resource overhead and enabling fast detection by defining a specific search space for URLLC control information within the data region, allowing for efficient URLLC data reception.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If URLLC data and control information are mapped to the data region using pre-emption technology, then time-frequency resource utilization is improved, but downlink data receiving latency increases due to the need for blind detection in the control region
Solution Approach 1:
The patent extracts URLLC control information from the traditional control region and places it directly in the data region alongside URLLC data. This is achieved by allocating specific resource elements within the data region to carry URLLC control information, allowing the receiving device to obtain control information without performing blind detection in the control region, thereby reducing receiving latency while maintaining efficient resource utilization
Solution Approach 2:
The patent introduces a mapping relationship between URLLC control information and data region resource elements as an intermediary mechanism. The base station uses this mapping to directly place control information in the data region, and the receiving device uses the mapping to locate and extract control information efficiently, eliminating the need for blind detection and reducing latency
2Loss of substance
If URLLC control information is placed in the data region, then resource overhead is reduced, but detection accuracy decreases due to the lack of dedicated control region structure
Solution Approach 1:
The patent applies local quality by designating specific resource elements within the data region to have the special function of carrying URLLC control information. These specific resource elements are differentiated from other data region resource elements through predefined mapping relationships, allowing the receiving device to identify and detect control information with high accuracy in specific locations while maintaining overall data region efficiency
Solution Approach 2:
The patent uses preliminary action by pre-configuring and signaling the mapping relationship between URLLC control information and data region resource elements before actual data transmission. This allows the receiving device to prepare detection parameters and algorithms in advance based on the known mapping, ensuring accurate detection without requiring complex blind search procedures
Data Source
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AI summary
Embodiments of the present invention provide a method for receiving URLLC data from time-frequency resources. The method is applied to a receiving device, the time-frequency resources include eMBB data and the URLLC data, the time-frequency resources further include an OFDM symbol, the OFDM symbol includes an indication resource element RE, the indication RE indicates whether URLLC control information exists in the OFDM symbol, and the method includes: when the indication RE indicates that the URLLC control information exists in the OFDM symbol, detecting the URLLC control information in the OFDM symbol; and receiving the URLLC data based on the detected URLLC control information.