Carrier Aggregation Power Management via Component Carrier Pausing
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Wireless communication systems face challenges in efficiently implementing carrier aggregation and managing power in user equipment, particularly in Coordinated Multi-Point (CoMP) systems, where existing technologies struggle to optimize component carrier states and power usage effectively.
Innovation Solution
A method and apparatus for user equipment in a wireless communication system that sets a first component carrier to an idle state, receives state change information through a second component carrier, and monitors a control channel if the state change information indicates a predetermined value, utilizing Discontinuous Reception (DRX) mode and Physical Downlink Control Channel (PDCCH) for efficient power management and carrier aggregation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If user equipment continuously monitors all component carriers for control channels, then communication reliability is improved, but power consumption increases
Solution Approach 1:
The patent segments the monitoring task by dividing component carriers into different groups based on their operational states. The user equipment monitors control channels of active component carriers while setting inactive ones to idle state, thereby segmenting the monitoring burden and reducing power consumption while maintaining reliable communication on active carriers.
Solution Approach 2:
The patent implements dynamic state management of component carriers, transitioning between active and idle states based on communication needs. The user equipment dynamically adjusts which component carriers are monitored, allowing flexible adaptation to varying communication requirements and optimizing the balance between reliability and power consumption.
2Use of energy by moving object
If user equipment sets all component carriers to idle state to save power, then power consumption is reduced, but communication responsiveness deteriorates
Solution Approach 1:
The patent applies preliminary action by receiving state change information about component carriers before actually transitioning to idle state. This allows the user equipment to prepare for potential future communication needs by having advance knowledge of carrier state changes, thus maintaining responsiveness while saving power during idle periods.
Solution Approach 2:
The patent implements feedback mechanisms where the user equipment receives state change information about component carriers and uses this feedback to make informed decisions about when to transition between active and idle states. This feedback loop ensures that power saving actions do not compromise communication responsiveness by allowing timely adaptation to changing network conditions.
3Productivity
If user equipment monitors control channels on all component carriers, then carrier aggregation efficiency is improved, but device complexity increases
Solution Approach 1:
The patent applies local quality by differentiating the monitoring behavior across different component carriers based on their individual states. Instead of uniformly monitoring all carriers, the user equipment monitors only the control channels of active component carriers while setting inactive ones to idle state, thereby reducing device complexity while maintaining aggregation efficiency where needed.
Data Source
AI summary
The present invention relates to a method and to an apparatus for supporting carrier aggregation. More particularly, the present invention relates to a method for enabling user equipment to receive a signal from a base station in a wireless communication system which supports carrier aggregation, wherein said the method comprises the steps of: setting a first component carrier to a paused state; receiving state change information for the first component carrier via the second component carrier during the paused state of the first component carrier; and monitoring a control channel via the first component carrier if the state change information indicates a predetermined value. The present invention also relates to an apparatus for the method.