Wake-Up Receiver Timing for Lower-Power 5G UE Reception
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Solution Overview
Problem
The challenge of excessive power consumption in user equipment (UE) devices with wake-up receivers in wireless communication systems, particularly in 5G and beyond systems, is not adequately addressed by existing technologies.
Innovation Solution
A method involving a user equipment (UE) that receives configuration information for a wake-up signal (WUS), activates a wake-up receiver (WUR) for a specified time, and deactivates the main radio receiver during this period, allowing it to determine coverage and channel state, thereby optimizing power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the main radio receiver is continuously activated to ensure reliable communication and accurate channel state determination, then communication reliability is improved, but power consumption increases
Solution Approach 1:
The receiver is divided into two functional segments: a wake-up receiver (WUR) for detecting wake-up signals and a main radio receiver for full communication operations. The WUR operates continuously with low power consumption to monitor for wake-up signals, while the main radio receiver is activated only when needed, thus segmenting the reception functions to optimize both power consumption and reliability.
Solution Approach 2:
The wake-up receiver performs preliminary detection of wake-up signals before activating the main radio receiver. This preliminary action allows the system to determine whether full communication operations are necessary, avoiding unnecessary activation of the power-intensive main receiver and thereby reducing overall power consumption while maintaining reliability.
2Measurement precision
If the wake-up receiver operates for extended periods to accurately determine coverage and channel state, then channel state determination accuracy is improved, but power consumption increases
Solution Approach 1:
The wake-up receiver operates periodically rather than continuously, activating for specific durations to determine channel state and coverage, then entering sleep mode. This periodic operation allows the system to gather necessary channel state information at intervals, maintaining measurement accuracy while significantly reducing average power consumption compared to continuous operation.
Solution Approach 2:
The wake-up receiver performs preliminary channel state determination using low-power techniques before deciding whether full communication operations are needed. This preliminary measurement allows the system to assess channel conditions with minimal power expenditure, activating the main receiver only when channel conditions warrant full communication operations.
3Use of energy by moving object
If the main radio receiver is deactivated to reduce power consumption, then power consumption is reduced, but the ability to detect coverage changes and channel state deteriorates
Solution Approach 1:
The reception function is segmented between the wake-up receiver and main radio receiver, with the WUR handling coverage detection and wake-up signal monitoring while the main receiver handles full communication. This segmentation allows the system to maintain coverage detection capability through the WUR even when the main receiver is deactivated, reducing power consumption without sacrificing reliability.
Solution Approach 2:
The wake-up receiver acts as an intermediary between the external environment (wake-up signals, channel state) and the main radio receiver. It monitors coverage and channel conditions, and only activates the main receiver when necessary, thus maintaining system awareness of coverage changes while minimizing the operational time of the power-intensive main receiver.
Data Source
AI summary
The present disclosure relates to a 5G or 6G communication system for supporting higher data transmission rates. In addition, disclosed is a method performed by a user equipment in a wireless communication system, the method comprising the steps of: receiving configuration information about a wakeup signal (WUS) from a base station; determining, on the basis of the configuration about the WUS, a timer indicating a period during which the WUS is to be received using a wakeup receiver (WUR); enabling the WUR and disabling a main radio receiver during the period indicated by the timer; and determining at least one of the coverage or channel state of the user equipment during the period indicated by the timer.