Primary Receiver Power Mode Control via Secondary Signal Detection
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Solution Overview
Problem
In 5G systems, the paging procedure consumes significant energy in user equipment (UE), leading to increased latency due to the use of a low power secondary receiver that may miss wake-up signals, causing the primary receiver to remain in deep sleep mode and miss important communications.
Innovation Solution
A system with a primary receiver that can switch between high and low power modes, using a secondary receiver to trigger wake-ups and adjust power mode parameters based on signal reception data, allowing the primary receiver to stay in low power mode longer while ensuring timely wake-ups and reducing battery consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If the primary receiver stays in deep sleep mode to reduce power consumption, then battery life is improved, but the secondary receiver may miss wake-up signals causing increased latency
Solution Approach 1:
The system uses feedback from the secondary receiver's signal detection capability to dynamically adjust the primary receiver's wake-up timing. When the secondary receiver fails to detect wake-up signals, this information feeds back to trigger the primary receiver to wake up earlier in subsequent cycles, preventing missed communications while optimizing power consumption.
Solution Approach 2:
The primary receiver's operation mode is made dynamic rather than static. It can operate in deep sleep mode during periods when the secondary receiver successfully detects wake-up signals, and switch to active mode or wake up earlier when detection failures occur, adapting its behavior based on real-time conditions.
2Use of energy by moving object
If the DRX cycle is extended to allow longer sleep periods, then power consumption is reduced, but latency increases
Solution Approach 1:
The DRX cycle configuration is made dynamic. While a base extended DRX cycle is configured for power savings, the system can adjust the effective cycle length by triggering the primary receiver to wake up earlier than the scheduled deep sleep period when the secondary receiver misses wake-up signals, thus adapting the cycle length to actual needs.
Solution Approach 2:
The system performs preliminary wake-up of the primary receiver before the end of the extended DRX cycle when detection failures are detected. This preliminary action ensures that the primary receiver is awake and ready to receive communications before the extended cycle would have naturally ended, maintaining low latency while preserving most of the power savings.
3Use of energy by moving object
If the secondary receiver has reduced sensitivity to save power, then power consumption is reduced, but it misses wake-up signals increasing latency
Solution Approach 1:
The secondary receiver serves as an intermediary with reduced capabilities that triggers the primary receiver. When it fails to detect signals, the system uses this information to activate the primary receiver as a backup detection mechanism, ensuring reliable signal detection while maintaining the power benefits of having a low-power secondary receiver.
Solution Approach 2:
The system prepares for the secondary receiver's limited sensitivity by having the primary receiver ready to take over detection responsibilities when needed. This cushioning mechanism ensures that even though the secondary receiver has reduced sensitivity, the overall system maintains reliable detection by falling back to the more capable primary receiver.
Data Source
Figure 1A~1B
Figure 2
Figure 3
AI summary
Telecommunications system, user equipment, or method comprising a primary receiver configured to have a first power mode and a second power mode, wherein the primary receiver consumes more power in the first power mode than when in the second power mode, and wherein the primary receiver is configured to receive a first signal from a base station when in the first power mode, the first signal including information. A secondary receiver configured to receive a second signal from the base station. Means adapted to execute the steps of in response to the secondary receiver receiving the second signal, changing the primary receiver from the second power mode to the first power mode. Using the information included in the first signal to alter one or more parameters that control how the power mode of the primary receiver is changed.