Wireless Terminal DRX Cycle Synchronization
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In wireless communication systems, the current method for controlling Discontinuous Reception (DRX) cycles independently for each component carrier leads to inefficient data reception when some carriers are in a long DRX state, resulting in prolonged periods without data reception, and short DRX cycles increase power consumption.
Innovation Solution
A wireless communication system that monitors the communication state of each component carrier, distributes data based on these states, and initiates a reception operation at a predetermined timing during a non-reception period of a second cycle, which is longer than a first cycle, allowing for efficient data reception and power saving.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If DRX cycles are controlled independently for each component carrier, then data reception can be optimized per carrier, but power consumption increases when some carriers are in long DRX state
Solution Approach 1:
The patent merges the DRX cycle control of multiple component carriers by introducing a unified shorter DRX cycle that applies to all carriers. Instead of each carrier operating independently with its own DRX cycle, the system synchronizes them to use a common shorter cycle, ensuring that at least one carrier is in a short DRX state ready to receive data, thereby reducing overall power consumption while maintaining reception efficiency.
2Use of energy by moving object
If short DRX cycle is used for all component carriers, then power consumption is reduced, but data reception delay increases when carriers are in long DRX state
Solution Approach 1:
The patent introduces dynamic DRX cycle selection where the system can switch between short and long DRX cycles based on real-time conditions. When data reception is urgent or available, the system uses the shorter DRX cycle for quick reception. When data is not available for extended periods, it transitions to the longer DRX cycle to save power. This dynamic adaptation resolves the contradiction between power consumption and reception delay.
3Use of energy by moving object
If long DRX cycle is used for some component carriers, then power saving is achieved, but data cannot be received during long discontinuous reception state
Solution Approach 1:
The patent segments the DRX cycle control by dividing component carriers into different groups based on their DRX cycle states. Some carriers operate with long DRX cycles for power saving, while others operate with short DRX cycles for reliable data reception. This segmentation allows the system to optimize power consumption across the board while ensuring that at least some carriers maintain the reliability needed for actual data communication.
Data Source
AI summary
A wireless communication system that enables a wireless terminal to perform communication using a plurality of component carriers having different frequencies. The wireless communication system monitors a communication state of each of the component carriers allocated to the wireless terminal; distributes, to the component carriers, data to be transmitted, based on the communication state of each of the component carriers; starts a reception operation at a predetermined timing in a non-reception period of a second cycle during a discontinuous reception operation at the second cycle in some of the component carriers allocated to the wireless terminal, and performs the reception operation a predetermined number of times, the second cycle being longer than a first cycle.