Mobile Terminal DRX/DTX Power Saving With Coordinated Wake Cycles
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Solution Overview
Problem
Conventional mobile communications systems fail to efficiently achieve low power consumption in mobile terminals during DRX/DTX operation periods, lacking effective methods for setting up DRX/DTX cycles and signaling to reduce scheduling load on base stations.
Innovation Solution
A mobile communications system where the mobile terminal judges whether it can transition to a temporary data transmission stop period, temporarily stopping power supply to data processing units, and the base station judges a temporary reception stop period, allowing efficient power conservation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If the mobile terminal continuously transmits and receives data during Active state, then communication reliability is maintained, but power consumption increases
Solution Approach 1:
The patent implements DRX (Discontinuous Reception) and DTX (Discontinuous Transmission) cycles that periodically switch the mobile terminal between active and sleep states. During Active state, normal data transmission and reception occur. During DRX/DTX periods, the terminal stops receiving and transmitting data, achieving periodic operation patterns that reduce power consumption while maintaining communication capability through scheduled wake-up periods.
Solution Approach 2:
The patent dynamically adjusts the DRX/DTX cycle parameters and timing based on network conditions and traffic patterns. The base station controls the scheduling of data transmissions to align with the mobile terminal's active periods, creating a dynamic adaptation mechanism that optimizes power consumption while ensuring data delivery reliability.
2Reliability
If the base station schedules data transmissions frequently, then data delivery reliability is improved, but scheduling load increases
Solution Approach 1:
The patent establishes DRX/DTX cycle configurations in advance before actual data transmission begins. The base station pre-configures the mobile terminal with specific DRX cycle lengths, offset values, and active period timings. This preliminary setup allows both parties to anticipate future transmission opportunities, reducing the need for frequent real-time scheduling decisions and lowering the base station's scheduling load.
Solution Approach 2:
The mobile terminal autonomously manages its own reception and transmission schedules based on the pre-configured DRX/DTX parameters. The terminal independently determines when to wake up, when to sleep, and when to transmit acknowledgments without requiring continuous base station intervention, thereby reducing the scheduling burden on the base station while maintaining reliable data delivery.
Data Source
AI summary
A mobile terminal 3 judges whether or not the mobile terminal is able to make a transition to a DTX period during Active, and, when judging that the mobile terminal is able to make a transition to a DTX period during Active, notifies a base station 2 to that effect. If the base station 2 judges that the mobile terminal is able to make a transition to a DRX period during Active when triggered by the notification from the mobile terminal 3, the base station temporarily stops supply of electric power to the data transmission processing units and the data reception processing units of the mobile terminal 3.