UE Power Control for LTE Carrier Aggregation
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Solution Overview
Problem
LTE CA UEs consume electricity even when there is no traffic flow due to the continuous operation of RF and modem modules across multiple frequencies, leading to inefficient power usage.
Innovation Solution
A power control method and apparatus that allow a UE to dynamically manage power modes by receiving a secondary cell adding message from a base station, checking data-related information, and determining the power mode of the secondary module based on this information, enabling power saving by suspending or supplying power only when necessary.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If carrier aggregation is implemented to enable multi-frequency communication, then data rate is improved, but power consumption increases
Solution Approach 1:
The patent implements dynamic power mode switching for secondary modules based on real-time data flow conditions. The system transitions between active and sleep modes dynamically, adjusting power consumption according to actual communication needs rather than maintaining fixed power levels, thereby resolving the contradiction between maintaining high data rate capability and reducing power consumption.
Solution Approach 2:
The system employs periodic monitoring of data flow conditions and periodic switching between power modes. By checking data flow status at regular intervals and transitioning power modes accordingly, the system ensures that secondary modules consume power only during active data transmission periods while entering low-power states during idle periods, thus balancing data rate requirements with power consumption reduction.
2Adaptability or versatility
If secondary modules are activated for multi-frequency operation, then communication capability is improved, but unnecessary power consumption occurs when there is no traffic flow
Solution Approach 1:
The system implements self-service power management where secondary modules automatically monitor their own data flow conditions and autonomously switch between active and sleep modes without requiring continuous external control. This self-service mechanism ensures that modules maintain communication capability when needed while automatically entering low-power states when no traffic is present, eliminating unnecessary power consumption while preserving adaptability.
Solution Approach 2:
The patent changes the operational parameter of secondary modules from a fixed active state to a variable state that adapts based on data flow conditions. By modifying the power mode parameter dynamically - switching between active mode during data transmission and sleep mode during idle periods - the system maintains communication capability adaptability while preventing energy loss during periods of no traffic flow.
3Adaptability or versatility
If RF modules operate continuously across multiple frequencies, then multi-frequency communication is enabled, but power efficiency deteriorates
Solution Approach 1:
The patent segments the power management control for each secondary module independently, allowing individual power mode decisions for each frequency module based on its specific data flow conditions. This segmentation enables the system to maintain multi-frequency communication capability by keeping only the necessary modules active while putting others in sleep mode, thereby improving power efficiency without sacrificing overall communication adaptability.
Solution Approach 2:
The system implements dynamic power efficiency optimization by continuously monitoring data flow conditions and adjusting the operational state of RF modules accordingly. Rather than operating continuously at fixed power levels, the RF modules dynamically transition between active and sleep states based on real-time traffic requirements, maintaining multi-frequency communication capability while significantly improving overall power efficiency.
Data Source
AI summary
A power control method and an apparatus for controlling power mode of a User Equipment (UE) operating on multiple frequencies are provided. The terminal includes a primary module for primary cell communication and a secondary module for secondary cell communication. The method includes receiving a secondary cell adding message for adding a secondary cell from a base station, checking data-related information on data communicated through at least one of the primary module and a secondary module, and determining a power mode of the secondary module based on the checking.