Network-Controlled Repeater Secondary-Cell Timing for Continuous Forwarding
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Solution Overview
Problem
In wireless communication systems, network-controlled repeaters (NCR) face issues with maintaining reception of side control information and timing when a secondary cell is not actively receiving data, leading to potential deactivation, which disrupts continuous forwarding operations.
Innovation Solution
The method involves setting a timer value for secondary cell deactivation to infinity in the NCR-MT, ensuring continuous reception of side control information and maintaining transmission/reception timing for the NCR-Fwd.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If the secondary cell is deactivated when data transmission is not active, then power consumption is reduced, but the reception of side control information and timing maintenance are disrupted
Solution Approach 1:
The patent segments the cell functionality by introducing a dormant state that separates data transmission activities from control information reception. The secondary cell is divided into active data transmission mode and dormant control reception mode, allowing independent management of these functions to resolve the contradiction between power saving and control information reception.
Solution Approach 2:
The patent implements dynamic state transitions for the secondary cell between active and dormant states. The cell can dynamically switch between full operation (data + control) and dormant operation (control only), adapting its functionality based on current needs while maintaining the ability to receive control information in both states.
2Productivity
If the secondary cell is deactivated to save resources, then system resources are optimized, but continuous forwarding operation cannot be guaranteed
Solution Approach 1:
The patent applies preliminary action by maintaining the secondary cell in a dormant state with control information reception capability before actual data transmission is needed. This allows the cell to be quickly reactivated without full setup time, ensuring continuous forwarding operation while optimizing resources during idle periods.
3Reliability
If the timer value is set to infinity to prevent deactivation, then side control information reception is continuous, but power consumption increases
Solution Approach 1:
The patent applies local quality by creating different operational qualities within the same secondary cell - a dormant quality for control information reception that consumes minimal power, and an active quality for data transmission that consumes more power. The cell can locally switch between these qualities based on current requirements.
Data Source
AI summary
Provided are a NCR operation method and a device in a wireless communication system. A NCR comprises NCR-MT and NCR-Fwd and may operate in a multi-carrier (cell) environment. The NCR receives side control information from a base station through NCR-MT, and carries out a forwarding operation through NCR-Fwd on the basis of the side control information. If NCRMT receives the side control information through a secondary cell among a plurality of cells configured to the NCR, NCR-MT operates by determining that the value of a timer associated with the deactivation of the secondary cell is equal to infinity.