Component Carrier Activation Pattern Management
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Solution Overview
Problem
In wireless communication systems, especially in LTE-A, the need to dynamically activate or inactivate component carriers to reduce battery consumption and signaling overhead is not effectively addressed, as existing methods do not efficiently manage the activation and inactivation of serving cells, leading to increased power usage and data loss.
Innovation Solution
A method for user equipment to manage component carriers by receiving activation pattern information from a base station, activating or inactivating component carriers on a subframe basis, and autonomously determining inactivation based on conditions such as channel quality, buffer status, and power headroom, thereby reducing signaling overhead and battery consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the UE maintains connection with multiple serving cells to receive services from multiple cells, then the service coverage and capacity are improved, but the battery consumption increases
Solution Approach 1:
The patent implements dynamic activation and inactivation of serving cells based on service requirements. The network can dynamically activate or deactivate secondary serving cells through MAC control elements, allowing the system to adapt between maintaining multiple cell connections for service coverage and reducing connections to save battery power, thus resolving the contradiction between service adaptability and energy consumption
2Measurement precision
If the network activates or deactivates multiple serving cells through individual signaling to precisely control cell status, then the cell management precision is improved, but the signaling overhead increases
Solution Approach 1:
The patent combines the activation and deactivation control of multiple serving cells into a unified MAC control element mechanism. Instead of using separate signaling for each cell, the network uses a single MAC CE to control multiple secondary serving cells simultaneously, reducing signaling overhead while maintaining precise control capability through the unified signaling structure
Data Source
AI summary
Provided are a method and device in which a terminal manages component carriers in a wireless communication system. The terminal receives activation pattern data indicating activation or inactivation of at least one serving cell from a base station, and activates or inactivates the at least one component carrier in accordance with the activation pattern data.