Wireless Terminal Control Information Detection Adaptation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In wireless communication systems, particularly in 5G networks, there is a challenge in efficiently providing control information to ensure smooth service delivery, especially when multiple service types like eMBB, mMTC, and URLLC need to be supported simultaneously, which can lead to inefficiencies in resource allocation and power consumption due to the need for adaptive detection of scheduling control information.
Innovation Solution
The method involves adaptively detecting and receiving control information based on slot format indicators and Hybrid Automatic Repeat Request (HARQ) processes, allowing terminals to optimize power consumption and resource allocation by determining the necessity of detecting control information for uplink or downlink data scheduling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If terminals continuously detect control information for all service types, then service coverage is improved, but power consumption increases
Solution Approach 1:
The terminal dynamically adjusts its control information detection behavior based on the detected slot format. When the slot format indicates no uplink data scheduling, the terminal skips control information detection, thereby reducing power consumption while maintaining service coverage when needed
Solution Approach 2:
The system changes the detection parameter (control information detection) based on the slot format indicator parameter. When the slot format indicates downlink-only or mixed mode without uplink scheduling, the detection parameter is changed to skip mode, optimizing power consumption
2Use of energy by moving object
If terminals detect control information adaptively based on slot format, then power consumption is reduced, but service responsiveness may deteriorate
Solution Approach 1:
The terminal uses feedback from the slot format indicator to make intelligent decisions about control information detection. The slot format provides feedback about the transmission direction, enabling the terminal to respond appropriately - detecting control information when uplink scheduling is possible and skipping when it is not
Solution Approach 2:
The slot format indicator provides preliminary information about the transmission direction before control information is transmitted. The terminal uses this preliminary action to pre-determine whether to detect control information, avoiding unnecessary detection and maintaining responsiveness when needed
3Adaptability or versatility
If control information is transmitted for all slot formats, then scheduling flexibility is improved, but system overhead increases
Solution Approach 1:
The system extracts and transmits control information only when necessary - specifically when the slot format indicates uplink data scheduling is possible. Control information transmission is taken out for slot formats that indicate downlink-only or mixed mode without uplink scheduling, reducing overhead while maintaining scheduling flexibility
Solution Approach 2:
Instead of transmitting control information for all slot formats (excessive action), the system transmits control information only for the necessary subset of slot formats that require uplink scheduling (partial action), thereby reducing system overhead while maintaining adequate scheduling flexibility
Data Source
Figure 1
Figure 2
Figure 3
AI summary
The present disclosure relates to a method and apparatus for receiving control information in a wireless communication system, and the method of receiving control information may include: receiving scheduling configuration information; receiving slot format information; determining formats of at least one slot based on scheduling configuration information and the slot format information; and receiving, based on a result of the determining, at least one of first type control information and second type control information.