Fast Serving Cell Activation Using Dormant-State Measurement Configs
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Solution Overview
Problem
There is a need to reduce the delay in activating a serving cell in wireless communication systems, particularly when carrier aggregation or dual connectivity is configured, which can lead to increased battery consumption or data transmission/reception delays due to PDCCH monitoring and inactive cell states.
Innovation Solution
A method for cell activation in wireless communication systems involving the reception of channel measurement configuration information and MAC control information to quickly activate or deactivate cells, utilizing a new hibernation mode or dormancy mode to manage cell states efficiently, reducing activation delays and battery consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the terminal maintains a plurality of cells in an active state to use carrier aggregation or dual connectivity, then data transmission rate is improved, but battery consumption increases
Solution Approach 1:
The patent introduces a dormant state for cells that is dynamically switchable between active and inactive states. The terminal can quickly transition cells from dormant to active state when needed for data transmission, and back to dormant state when not needed, optimizing the balance between data rate and battery consumption based on real-time requirements
Solution Approach 2:
The patent performs preliminary configuration of cells in a dormant state with pre-configured parameters before they are needed for active data transmission. This preliminary setup allows for rapid activation without full initialization delays, enabling quick switching between states while maintaining performance requirements
2Use of energy by moving object
If the terminal maintains a plurality of cells in an inactive state to reduce battery consumption, then battery life is extended, but data transmission delay increases
Solution Approach 1:
The patent implements a dormant state that is dynamically adjustable, allowing the terminal to quickly activate cells when data transmission is required. The dormant state maintains essential cell configurations and parameters in a ready state, enabling rapid transition to active state without full re-initialization, thus reducing activation delay while saving battery when inactive
Solution Approach 2:
The patent performs preliminary configuration of cells in a dormant state with pre-configured parameters, measurement configurations, and activation conditions before they are needed. This preliminary setup ensures that when activation is triggered, the cell can become active immediately without waiting for full configuration, reducing transmission delay
3Use of energy by moving object
If the terminal deactivates and reactivates cells frequently to optimize battery usage, then battery consumption is reduced, but processing delay increases
Solution Approach 1:
The patent introduces a dormant state that provides dynamic flexibility in cell management. Instead of full active-inactive transitions, the terminal can switch between dormant and active states more efficiently. The dormant state maintains essential configurations and measurement parameters, allowing for faster re-activation and reducing the processing delay associated with frequent cell state changes
Solution Approach 2:
The patent performs preliminary configuration of cells in a dormant state with pre-configured parameters, measurement configurations, and activation conditions. This preliminary setup ensures that when activation is triggered, the cell can become active immediately without waiting for full configuration, reducing the processing delay of frequent activations
Data Source
AI summary
The disclosure relates to a 5G or 6G communication system for supporting a higher data transmission rate. The disclosure provides a method and apparatus for quickly performing cell activation in a wireless communication system. The method of UE comprises receiving, from a base station, first channel measurement configuration information and second channel measurement configuration information that include channel measurement signal information; receiving, from the base station, MAC CE for a cell activation or a cell deactivation; identifying, based on the MAC CE, at least one cell in which the cell activation is indicated for the terminal; determining, based on the first channel measurement configuration information and the second channel measurement configuration information, channel measurement configuration information for the at least one cell in which the cell activation is indicated; and performing the cell activation based on the second channel measurement configuration information and the MAC CE.