Inter-eNB Carrier Aggregation DRX Configuration
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Solution Overview
Problem
The existing LTE-A system faces challenges in inter-eNB carrier aggregation, particularly in scenarios where multiple pico cells and a macro cell operate in an overlapped manner, limiting the applicability of carrier aggregation functions.
Innovation Solution
A method and apparatus for inter-eNB carrier aggregation that involves receiving and transmitting control messages containing SCell configuration information and DRX configuration, allowing for the application of Discontinuous Reception (DRX) across different base stations, thereby optimizing battery consumption and network performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If inter-eNB carrier aggregation is implemented to enable multiple pico cells and macro cell to operate in overlapped manner, then network capacity and data rate are improved, but system complexity and coordination difficulty increase
Solution Approach 1:
The patent segments the carrier aggregation system into intra-eNB and inter-eNB components, allowing independent management and coordination strategies for each type. This segmentation enables the system to handle multiple pico cells and macro cells by dividing them into different eNB groups, reducing overall coordination complexity while maintaining high network capacity
Solution Approach 2:
The patent introduces an intermediary coordination mechanism between eNBs that manages the interactions in inter-eNB carrier aggregation. This intermediary layer handles the complex coordination tasks separately from the core carrier aggregation functionality, enabling multiple cells to operate in overlapped manner while keeping system management tractable
2Use of energy by moving object
If DRX configuration is applied across different base stations in inter-eNB carrier aggregation, then battery consumption is reduced, but coordination overhead and signaling complexity increase
Solution Approach 1:
The patent merges the DRX configuration management across multiple eNBs by establishing coordinated DRX patterns that are synchronized between base stations. This merging approach allows the terminal to apply unified DRX settings across inter-eNB carriers, reducing battery consumption while minimizing redundant signaling through consolidated DRX configuration messages
3Productivity
If SCell configuration information is transmitted from primary serving cell to enable secondary cell addition, then data communication capability is improved, but control signaling overhead increases
Solution Approach 1:
The patent employs preliminary action by pre-configuring SCell parameters and DRX settings in the control message before the actual SCell activation. This allows the terminal to rapidly activate secondary cells without requiring multiple subsequent configuration exchanges, improving data communication capability while reducing cumulative signaling overhead through consolidated preliminary configuration
Data Source
AI summary
The present invention relates to a method and apparatus for performing a discontinuous reception (DRX) operation while transceiving data using a plurality of carriers in a mobile communication system. The communication method for a terminal according to one embodiment of the present invention comprises the steps of: receiving a control message, including setting information of a secondary serving cell (SCell) to be added and discontinuous reception setting information, from a primary serving cell (PCell); and applying, if the control message includes an indicator indicating that the first base station to which the SCell to be added belongs and the second base station to which the PCell belongs are different from each other, the DRX setting information to the serving cell of a first base station. According to one embodiment of the present invention, a discontinuous reception (DRX) operation is applied upon the occurrence of inter-base-station carrier aggregation, thus reducing the consumption of a battery.