UE Assistance Information Transmission in Secondary Cell Groups
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Solution Overview
Problem
The introduction of the SCG activation/deactivation mechanism in NR systems poses challenges for reporting UE assistance information, particularly in determining whether and how to report this information when the SCG is in a deactivated state, which can lead to inaccurate or lost UE information.
Innovation Solution
The proposed solution involves a method for user equipment (UE) to determine whether to trigger a UE assistance information transmission procedure based on the SCG's activation state. When the SCG is deactivated, the UE does not initiate the transmission procedure. If the SCG is activated, the UE can transmit the assistance information via specific paths, ensuring accurate and timely reporting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If the SCG activation/deactivation mechanism is implemented to save power, then power consumption is reduced, but UE assistance information may be lost or become inaccurate
Solution Approach 1:
The patent applies preliminary action by having the UE trigger the assistance information transmission procedure in advance before the SCG is deactivated. The UE determines whether to trigger the procedure based on the deactivation timing, ensuring that assistance information is transmitted and stored before the SCG enters the deactivated state, thus preventing information loss while maintaining power savings.
2Reliability
If the UE continuously monitors and reports assistance information regardless of SCG state, then information accuracy is maintained, but power consumption increases
Solution Approach 1:
The patent applies dynamics by making the assistance information transmission procedure conditional on the SCG activation state. The UE dynamically determines whether to trigger the procedure based on real-time assessment of the SCG state and deactivation timing. This dynamic approach ensures information accuracy when needed while avoiding unnecessary transmissions that would consume power during deactivated states.
3Loss of time
If the UE triggers assistance information transmission before SCG activation, then information is reported timely, but the transmission may be redundant or cause delays
Solution Approach 1:
The patent applies feedback by implementing a conditional trigger mechanism where the UE assesses the current SCG state and deactivation timing before initiating the transmission procedure. The UE receives feedback about the SCG activation status and adjusts its behavior accordingly, triggering the procedure only when necessary to avoid redundancy and optimize timing efficiency.
Data Source
AI summary
Provided in the present disclosure are a method performed by user equipment and for performing a user equipment assistance information transmission procedure, and user equipment. In an aspect of the present invention, the method includes: when user equipment determines to activate a corresponding secondary cell group due to reception of a secondary cell group activation command related to a secondary cell group or an autonomous determination that the secondary cell group needs to be activated, activating the secondary cell group; and triggering a user equipment assistance information transmission procedure related to the secondary cell group, and transmitting user equipment assistance information to the secondary cell group.