Wake-Up Receiver Switching for Low-Power Terminal Reception
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Solution Overview
Problem
The detailed operation procedure of a terminal equipped with a wake-up receiver (WUR) in wireless communication systems, particularly in reducing power consumption by controlling a simple receiver and a main receiver, has not been specified.
Innovation Solution
A terminal is equipped with a first reception unit for receiving signals using a main receiver and a second reception unit using a wake-up receiver, with a control unit to activate or deactivate these units accordingly, allowing transitions between different states to optimize power consumption based on communication situations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the main receiver is activated to receive signals, then the communication reliability is improved, but the power consumption increases
Solution Approach 1:
The receiver is segmented into two distinct functional units: a main receiver for full-featured signal reception and a wake-up receiver for simple signal detection. This segmentation allows the system to use only the necessary portion of the receiver at any given time, achieving power savings while maintaining communication reliability when needed.
Solution Approach 2:
The system dynamically switches between the main receiver and wake-up receiver based on communication conditions. The control unit activates or deactivates the main receiver according to whether data transmission is required, creating a dynamic power management system that adapts to changing operational needs.
2Use of energy by moving object
If the wake-up receiver is used to monitor data presence, then the power consumption is reduced, but the operational complexity increases
Solution Approach 1:
The control unit acts as an intermediary that manages the coordination between the wake-up receiver and main receiver. It receives indications from the base station and automatically switches between receivers, abstracting away the operational complexity from the user while enabling power savings.
Solution Approach 2:
The system performs self-service power management by automatically switching between receivers based on incoming indications from the base station. The control unit autonomously determines when to activate the main receiver without requiring manual intervention, reducing operational complexity for the user.
3Use of energy by moving object
If the main receiver is deactivated and wake-up receiver activated, then the power consumption is reduced, but the signal reception capability is limited
Solution Approach 1:
The receiver functionality is segmented into two distinct units with different capabilities. The wake-up receiver handles simple signal detection for power savings, while the main receiver provides full signal reception capability when needed. This segmentation allows the system to match reception capability with power consumption requirements.
Solution Approach 2:
The system dynamically adjusts its reception capability by switching between the wake-up receiver and main receiver based on the base station's indications. When data transmission is detected, the main receiver is activated to provide full capability; otherwise, the simpler wake-up receiver suffices, creating dynamic adaptability.
Data Source
AI summary
A terminal includes: a first reception unit configured to receive a first signal from a base station; a second reception unit configured to receive a second signal from the base station by using a power consumption smaller than that of the first reception unit; and a control unit configured to activate or deactivate each of the first reception unit and the second reception unit. In a case where the first reception unit is activated and the second reception unit is deactivated, the control unit deactivates the first reception unit after activating the second reception unit.