Multi-Carrier Terminal DRX Control for Lower Power Consumption
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Solution Overview
Problem
The increased power consumption of terminals in LTE and LTE-advanced systems due to the use of multiple carriers in carrier aggregation is a challenge that existing technologies have not effectively addressed.
Innovation Solution
Implementing a method that involves receiving a unified DRX parameter group for multiple carriers, controlling the DRX cycle uniformly across all carriers, and using carrier activation/deactivation messages to manage power consumption efficiently.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If carrier aggregation technology is used to support maximum bandwidth of 100 MHz, then the data transmission capacity is improved, but the power consumption of the terminal increases
Solution Approach 1:
The patent applies dynamics by making the DRX cycle configurable and switchable between different values (first DRX cycle and second DRX cycle) based on traffic conditions. The network device can dynamically adjust the DRX cycle parameter to match current data transmission needs, allowing the terminal to adapt its reception behavior accordingly.
Solution Approach 2:
The patent changes the DRX cycle parameter from a fixed value to a configurable parameter that can take different values. By introducing a first DRX cycle for normal traffic and a second DRX cycle for specific traffic types, the system optimizes the timing parameter to reduce terminal power consumption while maintaining data transmission capacity.
2Area of stationary object
If a terminal receives a plurality of wireless channels in a wideband, then the communication bandwidth is improved, but the power consumption increases
Solution Approach 1:
The patent implements periodic action through the DRX (Discontinuous Reception) mechanism, where the terminal periodically wakes up to receive control channels according to the configured DRX cycle and then enters sleep mode. This periodic reception pattern allows the terminal to monitor multiple carriers for maintaining communication capability while significantly reducing power consumption compared to continuous reception.
Solution Approach 2:
The system dynamically adjusts the DRX cycle based on traffic conditions and carrier states. When secondary carriers are activated or deactivated, the DRX cycle is reconfigured to match the current operational state, allowing the terminal to optimize its power consumption while maintaining the ability to receive across the aggregated bandwidth.
3Productivity
If multiple carriers are configured for communication, then the data rate is improved, but the complexity of control procedures increases
Solution Approach 1:
The patent applies universality by using a single configurable DRX cycle parameter that controls the reception behavior across all configured carriers. Instead of implementing separate DRX mechanisms for each carrier, the system uses one unified DRX configuration that applies universally to all carriers, simplifying the control procedure while maintaining support for multiple carriers and high data rates.
Data Source
AI summary
A method for reducing power consumption of a terminal that communicates with a base station in a mobile communication system using a multi-carrier structure composed of a primary component carrier and at least one secondary component carrier comprises: receiving a discontinuous reception (DRX) parameter group for multi carriers from the base station; and setting the multi carriers to the same parameter value, by using the received parameter group. The method for reducing power consumption of the terminal further comprises: performing a downlink control channel receive operation on each carrier according to a DRX cycle. As the base station in the mobile communication system using the multi-carrier structure simplifies the DRX process for reducing power consumption of a terminal by reducing signaling load for the multi-carrier control of the terminal, it becomes possible to reduce power consumption of the terminal.