Terminal Wake-Up Receiver Timing for Low-Power Wireless Links
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Solution Overview
Problem
Existing communication systems face challenges in optimizing power saving mechanisms for terminal devices, particularly in scenarios where the main receiver is turned off to conserve power, leading to potential communication interruptions and increased resource overheads due to wake-up delays when waking up the main receiver using a Wake Up Signal (WUS).
Innovation Solution
Implementing a timer-based mechanism for terminal devices to periodically turn on the main receiver, reducing resource overheads and wake-up delays by ensuring the main receiver is activated based on timers or uplink transmission requirements, rather than solely relying on WUS indications.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If the main receiver is turned off to save power, then power consumption is reduced, but wake-up delay and resource overhead increase
Solution Approach 1:
The terminal device performs preliminary actions by monitoring timer expiration and uplink transmission requirements before actually needing to communicate. When the timer expires or uplink transmission is required, the main receiver is proactively turned on, avoiding unnecessary wake-up delays and reducing the overhead of frequent wake-up signals from the network side.
Solution Approach 2:
The terminal device uses its own internal timer and processing capabilities to autonomously determine when to activate the main receiver, rather than relying solely on network-side wake-up signals. This self-service approach reduces dependency on network coordination and minimizes wake-up delay.
2Use of energy by moving object
If the main receiver is turned off to save power, then power consumption is reduced, but communication reliability decreases
Solution Approach 1:
The terminal device implements feedback mechanisms by monitoring timer expiration and uplink transmission requirements. This feedback loop ensures that the main receiver is activated at appropriate moments to maintain communication reliability while minimizing power consumption during idle periods.
Solution Approach 2:
The terminal device takes preliminary action by proactively activating the main receiver when the timer expires or uplink transmission is needed, ensuring communication reliability is maintained without relying on network-initiated wake-up signals.
3Use of energy by moving object
If wake-up signals are used to activate the main receiver, then power saving is achieved, but resource overhead increases
Solution Approach 1:
The terminal device uses its own timer and processing resources to manage receiver activation, reducing the burden on network-side wake-up signals. This self-service approach decreases the quantity of wake-up signals transmitted and reduces overall resource overhead.
Solution Approach 2:
The terminal device performs preliminary monitoring of timer expiration and transmission requirements, allowing it to activate the main receiver proactively without needing frequent network-initiated wake-up signals, thereby reducing resource overhead.
Data Source
AI summary
Provided are a wireless communication method, a terminal device, and a network device. The method includes: in a first communication state, receiving, by a terminal device, downlink information according to first information by using a main receiver of the terminal device. In the first communication state, a wake up receiver of the terminal device detects a wake up signal (WUS) used for waking up the main receiver of the terminal device, and the first information includes at least one of the following: a timer, an uplink transmission demand of the terminal device, and a downlink receiving demand of the terminal device.