CSI Packet Wake Scheduling for Low-Power IoT Reception
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
IoT devices face challenges in conserving power while intermittently gathering channel state information (CSI) packets, as continuous operation to capture these packets leads to unnecessary power consumption.
Innovation Solution
IoT devices operate in a power-save mode and wake up at scheduled intervals or based on triggers to intercept CSI packets, adjust gain elements based on distance, and negotiate target wake times to optimize power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If IoT devices operate continuously to capture CSI packets, then the completeness of CSI data gathering is improved, but power consumption increases
Solution Approach 1:
The patent implements periodic wake-up intervals where the IoT device exits power-save mode at scheduled times to capture CSI packets. This periodic operation allows the device to gather necessary channel state information while spending most time in low-power mode, thus resolving the contradiction between data completeness and power consumption.
Solution Approach 2:
The device determines the transmit schedule of other wireless devices in advance and pre-plans its wake-up times accordingly. By knowing when CSI packets will be transmitted, the IoT device can exit power-save mode only at those specific moments, ensuring it captures all relevant CSI data without unnecessary wake-ups that would waste power.
2Loss of time
If IoT devices wake up frequently to intercept CSI packets, then the freshness of channel state information is improved, but battery life decreases
Solution Approach 1:
The system establishes periodic wake-up intervals synchronized with the transmit schedule of other devices. This ensures channel state information is refreshed at appropriate intervals while maintaining battery life, as the device wakes up only when necessary to capture new CSI packets.
Solution Approach 2:
The IoT device monitors and determines the transmit schedules of other wireless devices, using this information to dynamically adjust its wake-up timing. This feedback mechanism ensures the device wakes up at optimal moments to capture fresh CSI data while minimizing unnecessary wake-ups that would drain the battery.
3Use of energy by moving object
If IoT devices operate in power-save mode, then power consumption is reduced, but the ability to capture CSI packets is worsened
Solution Approach 1:
The device alternates between power-save mode and active mode in periodic intervals, exiting power-save mode precisely when CSI packets are expected to be transmitted. This periodic switching ensures the device captures all necessary CSI data while maximizing time spent in low-power mode.
Solution Approach 2:
The IoT device determines the transmit schedules of other wireless devices in advance, allowing it to plan its power-save mode operation accordingly. By knowing when to be awake and when to sleep, the device ensures it never misses a CSI packet transmission while maintaining power-efficient operation.
Data Source
AI summary
A wireless device includes a front end and a processor coupled to the front end. The processor determines that a second wireless device within operative communication range of the front end is to transmit channel state information (CSI) packets at a predetermined schedule. The processor causes the wireless device to enter a power-save mode. The processor causes the wireless device to exit the power-save mode at a frequency based on the predetermined schedule of the second wireless device transmitting the CSI packets and causes the front end to intercept the CSI packets.