UE Capability Reporting for Dual Connectivity Scheduling
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Solution Overview
Problem
In next-generation communication systems, efficiently reporting UE capability for dual connection is challenging, particularly in scenarios involving both LTE and NR, where dynamic power sharing and scheduling are complex due to differences in access technologies and the need for simultaneous communication.
Innovation Solution
A method for reporting UE capability that involves the UE notifying the network of specific timing and power information for both LTE and NR uplink signals, allowing for dynamic or semi-static power sharing, enabling efficient scheduling and simultaneous transmission of signals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the UE reports detailed capability information for dual connection including timing and power information, then the network scheduling efficiency is improved, but the signaling overhead and complexity of capability reporting increases
Solution Approach 1:
The UE capability reporting is segmented into multiple parts: basic dual connection capability, timing relationship information, and power sharing information. This segmentation allows the network to receive comprehensive capability data while organizing it in a structured manner that reduces processing complexity.
Solution Approach 2:
The UE performs preliminary capability reporting by notifying the network of its dual connection capabilities, timing relationships, and power sharing abilities before actual dual connection operations begin. This preliminary action enables the network to pre-configure optimal scheduling parameters and power allocation strategies.
2Productivity
If the UE performs simultaneous transmission of LTE and NR uplink signals, then the data rate and communication reliability are improved, but the power consumption and difficulty of power management increase
Solution Approach 1:
The power sharing between LTE and NR uplink signals is made dynamic rather than static. The UE continuously monitors and reports power usage and transmission conditions, allowing the network to dynamically adjust power allocation ratios based on current channel conditions, traffic requirements, and battery status, thereby optimizing the balance between data rate and power consumption.
Solution Approach 2:
The system changes power allocation parameters dynamically based on reported UE capability information. The network adjusts power sharing ratios, transmission timing, and signal priorities by modifying these parameters in response to UE feedback, enabling efficient power management while maintaining high data rates during simultaneous LTE and NR transmissions.
3Productivity
If the network performs complex scheduling for dual connection, then the resource utilization and spectral efficiency are improved, but the scheduling complexity and processing time increase
Solution Approach 1:
The network performs preliminary scheduling based on UE-reported capability information before actual data transmission begins. By knowing the UE's timing relationships and power sharing capabilities in advance, the network can pre-configure resource allocations, avoid complex real-time calculations, and reduce scheduling processing time while maintaining high resource utilization.
Solution Approach 2:
The system implements a feedback mechanism where the UE reports its capability information, timing relationships, and power usage to the network. This feedback enables the network to optimize scheduling decisions based on actual UE conditions, improving resource utilization while avoiding unnecessary complexity through data-driven scheduling adjustments.
Data Source
Figure 1(A)~1(B)
Figure 2
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AI summary
Disclosed in the present application is a method for transmitting a signal from a network by a terminal supporting dual connectivity between a first radio access technology (RAT) and a second RAT in a wireless communication system. Specifically, the method comprises the steps of: reporting, to the network, capability information including information about an information transmission time from a processor for the first RAT included in the terminal to a processor for the second RAT included in the terminal; receiving a first uplink grant for transmitting a first RAT uplink signal, and transmitting the first RAT uplink signal on the basis of the first uplink grant; and receiving a second uplink grant for transmitting a second RAT uplink signal, and transmitting the second RAT uplink signal on the basis of the second uplink grant, wherein when the first RAT uplink signal and the second RAT uplink signal are transmitted at the same time, the first uplink grant and the second uplink grant are scheduled to transmit, at the same time, the first RAT uplink signal and the second RAT uplink signal at a delay transmission time determined on the basis of the information about the information transmission time.