Ambient Power Device Signaling for Selective System Parameter Updates
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Solution Overview
Problem
Zero-power devices in communication systems face challenges in frequently receiving public control information due to their limited battery levels, making it difficult to implement mechanisms like periodic reception of beacon frames in WiFi systems.
Innovation Solution
A network device transmits a first signal containing system parameter update information, allowing zero-power or ambient power-enabled devices to determine if an update occurs and where to find the updated parameters, reducing unnecessary power consumption by only receiving necessary updates.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If zero-power devices periodically receive public control information from the network device, then the devices can obtain necessary system information, but the power consumption of the zero-power devices increases
Solution Approach 1:
The patent extracts only the essential system parameter update information from the complete system information, transmitting it separately through indication information. This allows zero-power devices to obtain critical updates without receiving the entire system information set, thereby reducing power consumption while maintaining information availability.
Solution Approach 2:
Instead of requiring zero-power devices to receive all system information periodically, the patent implements partial action by only transmitting and requiring reception of parameter update indications. This partial approach reduces the energy burden on zero-power devices while still ensuring they receive necessary system updates.
2Reliability
If zero-power devices receive all system parameters periodically, then the devices can maintain up-to-date information, but the communication efficiency decreases due to unnecessary data transmission
Solution Approach 1:
The patent extracts and transmits only the update indication information for system parameters that have changed, rather than retransmitting complete system information. This extraction approach maintains information freshness for zero-power devices while significantly improving communication efficiency by reducing redundant data transmission.
Solution Approach 2:
The patent creates a simplified copy or indication of system parameter updates rather than transmitting the full system information. This indication copy contains sufficient information for zero-power devices to determine what updates are needed, maintaining reliability while enhancing communication efficiency.
3Loss of time
If zero-power devices frequently communicate with the network device, then the devices can receive control information timely, but the limited battery level is depleted quickly
Solution Approach 1:
The patent extracts critical timing-related parameter updates and transmits them as indication information, allowing zero-power devices to receive time-sensitive control information without requiring frequent full system information receptions. This reduces battery consumption while maintaining timely information delivery.
Solution Approach 2:
The patent implements optimized periodic action by having network devices transmit system parameter update indications at intervals rather than requiring continuous or frequent communications from zero-power devices. This periodic indication transmission reduces battery drain while ensuring timely delivery of time-sensitive information.
Data Source
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AI summary
A method for wireless communication, a network device, and an ambient power-enabled (AMP) device are provided. The method includes the following. A network device transmits a first signal to an AMP device, where the first signal contains system parameter update information.