5G Downlink Control Information Segmentation for URLLC Reliability
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
5G communications systems face challenges in improving the reliability of downlink control information transmission, particularly for ultra-reliable and low latency communications (URLLC) services, which require higher reliability than existing LTE systems.
Innovation Solution
The method involves dividing downlink control information into two parts, with the first part transmitted in the downlink control region and the second part in the downlink data region, reducing the number of bits transmitted in the control region and enhancing reliability by independent or joint channel coding and shared demodulation reference signals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If all downlink control information is transmitted in the downlink control region, then the control information can be received in one location, but the quantity of bits in the control region increases and reliability decreases
Solution Approach 1:
The downlink control information is divided into two parts: first downlink control information transmitted in the downlink control region, and second downlink control information transmitted in the downlink data region. This segmentation reduces the bit quantity in the control region while maintaining complete control information delivery, thereby improving transmission reliability for URLLC services.
2Reliability
If more resources are allocated to downlink control information, then reliability improves, but system resource efficiency decreases
Solution Approach 1:
Instead of allocating more resources solely in the control region (one dimension), the patent utilizes both the control region and the data region (adding another dimension). The second downlink control information is embedded in the downlink data region, effectively distributing control information across multiple dimensions of resource allocation. This approach improves reliability without sacrificing system resource efficiency.
Data Source
AI summary
A method for transmitting control information, a user equipment and a network device are disclosed. In an embodiment a method for transmitting control information include receiving, by a user equipment, a first part of downlink control information in a downlink control region sent by a network device and receiving, by the user equipment, downlink data and a second part of the downlink control information in a downlink data region based on the first part of the downlink control information, wherein the downlink data and the second part of the downlink control information is sent by the network device.