Low-Power Wake-Up Receiver for Wireless Paging Optimization
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Wireless network devices consume significant power when receiving or waiting to receive packets, particularly in unpredictable traffic patterns, leading to inefficient power management and increased energy consumption.
Innovation Solution
Implementing a low-power wake-up receiver that triggers the main receiver to awaken only when necessary, using short paging messages (ULP messages) to conserve power and optimize operational states, allowing devices to transition between doze, ultra-low power, and awake states based on trigger events, thereby reducing overall power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the main receiver continuously monitors for packets, then packet reception reliability is improved, but power consumption increases
Solution Approach 1:
The receiver is segmented into two distinct components: a low-power wake-up receiver that continuously monitors for wake-up signals, and a main receiver that remains dormant until activated. This segmentation allows the system to maintain reliable packet reception through the wake-up receiver while dramatically reducing power consumption by keeping the main receiver off during idle periods.
Solution Approach 2:
The system implements periodic action by having the wake-up receiver operate continuously at low power to detect wake-up signals, while the main receiver activates only periodically when triggered. This periodic activation pattern ensures that the main receiver is available when needed but consumes minimal power during intervals between activations.
2Speed
If the receiver remains in awake state to handle unpredictable traffic, then response time is improved, but power consumption increases
Solution Approach 1:
The wake-up receiver serves as an intermediary component between the external environment and the main receiver. It continuously monitors for traffic indicators and acts as a mediator that triggers the main receiver only when actual traffic is detected, enabling fast response to unpredictable traffic while avoiding the continuous power consumption of keeping the main receiver awake.
Solution Approach 2:
The wake-up receiver performs preliminary monitoring action continuously at low power to detect the presence of traffic before activating the main receiver. This preliminary detection mechanism ensures that when traffic arrives, the system can respond quickly by already having the wake-up receiver active and ready to trigger the main receiver immediately.
3Reliability
If the main receiver is activated frequently to check for packets, then packet reception reliability is improved, but power consumption increases
Solution Approach 1:
The receiver system is divided into a permanently active wake-up receiver and a dormant main receiver. The wake-up receiver handles continuous monitoring duties at low power, while the main receiver remains off until absolutely necessary, eliminating the need for frequent high-power activations and thereby reducing energy loss.
Solution Approach 2:
The wake-up receiver provides self-service by independently monitoring for wake-up signals and autonomously triggering the main receiver when needed. This self-service capability eliminates the need for the main receiver to frequently self-activate, reducing the overall energy consumption of the system while maintaining reliable packet reception.
Data Source
AI summary
Systems, methods, and devices for communicating data in a wireless communications network are described herein. In some aspects, a station includes a first receiver and a low power circuit including a second receiver. The second receiver may be configured to consume less power than the first receiver. The second receiver receives short paging messages from another wireless device, such as an access point. The paging messages may trigger transitions of the first receiver from inactive doze or sleep states to active awake states based on Traffic Information Maps. Once in the awake state, the first receiver receives messages. This enables the first receiver to reduce the time spent awake, thereby reducing power consumption. A system and method for identifying and managing paging modes is described herein.