Ambient IoT Channel and Signal Control for Low-Power Transmission
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing wireless communication technologies do not adequately consider the low-power and low-complexity requirements of ambient IoT devices, leading to inefficient, unreliable, and high-power consumption in data transmission.
Innovation Solution
Implementing channel and signal control mechanisms that include frame structures, control channel functions, wake-up signal transmissions, and multiple access schemes optimized for ambient IoT devices, utilizing energy-efficient protocols like Bluetooth Low Energy and Narrowband IoT, and incorporating energy harvesting technologies.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If existing wireless communication standards are used, then compatibility with standard protocols is maintained, but power consumption increases and device complexity increases
Solution Approach 1:
The communication protocol is segmented into distinct phases: idle phase (low-power monitoring), wake-up phase (signal reception), and data transmission phase (active communication). This segmentation allows the device to maintain minimal complexity by implementing only necessary functions for each phase, reducing overall power consumption while maintaining standard protocol compatibility.
Solution Approach 2:
The device dynamically adjusts its operational state based on incoming signals. Upon receiving a wake-up signal, the device transitions from low-power idle mode to active communication mode. This dynamic state change enables the device to maintain standard protocol compatibility when needed while minimizing power consumption during idle periods, resolving the contradiction between energy efficiency and device complexity.
2Length of stationary object
If transmission range is increased, then coverage area expands, but power consumption increases
Solution Approach 1:
The device employs periodic wake-up signals transmitted at predetermined intervals to maintain connection and enable communication over extended ranges. Instead of continuous high-power transmission, the system uses periodic low-power wake-up signals followed by brief active transmission windows, achieving long-range coverage while minimizing average power consumption.
Solution Approach 2:
The system changes transmission parameters dynamically - using lower power for wake-up signals and longer-range capability for data transmission only when necessary. This parameter adjustment allows the device to expand transmission range when needed while maintaining low power consumption during normal operation, resolving the contradiction between range and energy efficiency.
3Reliability
If data transmission reliability is improved, then error reduction increases, but power consumption increases
Solution Approach 1:
The protocol incorporates feedback mechanisms where the receiving device sends acknowledgment signals to the transmitting device. This feedback loop enables reliability improvement through retransmission only when necessary, rather than continuous high-power transmission. The system maintains low power consumption by keeping the device in idle state until feedback indicates a need for retransmission or additional communication.
Data Source
AI summary
A system, device, and a method are disclosed that may implement the control of aspects of the physical layer, including channels and/or signals, for ambient IoT devices in a manner that may ensure efficient, reliable, and low-power transmission of data. Methods may implement a frame structure and transmission, a control channel structure and function, a wake-up signal structure and transmission, and multiple access schemes for ambient IoT devices. For example, a method includes an ambient Internet of Things (IoT) device receiving an energizing signal, receiving a first signal including a preamble and a data field, that requests a response from the ambient IoT device based on the energizing signal, and in response to the first signal, transmitting a second signal including a preamble, a control channel field, and a data field.