User Terminal Power Saving via Dynamic Time Offset Sets
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In next-generation mobile communication systems, user terminals face challenges in power-saving due to the need to remain awake during reception and transmission of shared channels scheduled by downlink control information, leading to inefficiencies in power consumption.
Innovation Solution
A user terminal is designed with a receiving section to process information indicating sets of time offsets between receiving downlink control information and scheduled shared channels, allowing it to fall into a sleep state based on activated sets, thereby optimizing power-saving.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the user terminal remains awake to receive downlink shared channel and transmit uplink shared channel scheduled by downlink control information, then the communication reliability is improved, but the power consumption increases
Solution Approach 1:
The patent applies dynamics by making the terminal's operational state flexible and adaptive. The terminal dynamically adjusts between awake and sleep states based on the scheduled reception/transmission timing. By configuring multiple time offset sets and selectively activating appropriate sets, the terminal optimizes its wake-up schedule to match actual communication needs, thereby maintaining reliability while reducing unnecessary power consumption.
Solution Approach 2:
The patent utilizes parameter changes by configuring multiple sets of time offsets between downlink control information and scheduled shared channels. The network can activate different sets based on traffic patterns and channel conditions. This allows the terminal to adjust its operational timing parameters, entering sleep state for longer periods when appropriate, thus reducing power consumption while maintaining communication reliability.
2Use of energy by moving object
If the user terminal enters sleep state to save power, then the power consumption is reduced, but the response time for scheduled channel reception/transmission increases
Solution Approach 1:
The patent applies preliminary action by having the terminal receive and process downlink control information in advance while in sleep state. The terminal can prepare for upcoming scheduled receptions or transmissions by decoding DCI early, so that when the actual data transmission time arrives, the terminal is already prepared and can quickly transition to the appropriate state, minimizing response time delay.
Solution Approach 2:
The terminal dynamically adjusts its sleep and wake patterns based on the configured time offset sets. By having multiple sets of time offsets available and being able to switch between them, the terminal can optimize the balance between sleep duration and response time based on real-time communication requirements, ensuring minimal latency when needed while maximizing power savings when possible.
Data Source
AI summary
A user terminal according to an aspect of the present disclosure includes a receiving section that receives information indicating or activating one of a plurality of sets, each of the plurality of sets containing a plurality of time offsets between a time unit receiving downlink control information and a time unit receiving a downlink shared channel scheduled by way of the downlink control information or transmitting an uplink shared channel scheduled by way of the downlink control information, and a control section that controls falling into a sleep state based on the set indicated or activated by the information.