Zero-Power Terminal Signaling With Time-Varied Energy Supply
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Solution Overview
Problem
Existing communication systems, particularly those involving zero-power terminals, face challenges in ensuring the security of data transmission due to the lack of interaction capabilities for generating secure keys or adjusting channels, making them vulnerable to eavesdropping in hybrid zero-power communication systems based on cellular and sidelink communication.
Innovation Solution
A communication method involving a first device sending M energy supply signals with varying parameters across multiple time periods, a second device receiving and processing signals from a third device to obtain reported data, and the third device transmitting data using energy supply signals with distinct parameters, ensuring secure communication without direct interaction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If zero-power terminals use traditional communication methods to report data, then data transmission can be achieved, but data security cannot be ensured due to lack of interaction capabilities for generating secure keys
Solution Approach 1:
The patent applies parameter changes by varying the parameters of energy supply signals across multiple time periods. Each energy supply signal is generated based on different parameters in different time periods, creating unique signal characteristics that prevent eavesdropping while maintaining zero-power operation. This resolves the contradiction by enhancing security through parameter variation without requiring complex interaction capabilities.
Solution Approach 2:
The patent employs periodic action by dividing the time domain range into multiple time periods and transmitting different energy supply signals in each period. This periodic transmission with varying parameters allows the zero-power terminal to communicate securely with the network device over time without requiring complex interaction mechanisms, thus improving data security while maintaining device simplicity.
2Reliability
If energy supply signals are varied across multiple time periods with different parameters, then security against eavesdropping is improved, but signal complexity increases
Solution Approach 1:
The patent applies segmentation by dividing the time domain range into multiple distinct time periods, with each period containing energy supply signals with specific parameter characteristics. This segmentation allows the system to achieve enhanced security through parameter variation while managing signal generation complexity by organizing signals into discrete, manageable time segments rather than continuous complex modulation.
3Reliability
If M energy supply signals with different parameters are transmitted in the same time domain range, then communication security is enhanced, but energy consumption increases
Solution Approach 1:
The patent applies self-service by designing the energy supply signal transmission system where the network device provides energy supply signals that simultaneously serve dual purposes: providing necessary energy to the zero-power terminal and embedding security information through parameter variations. This eliminates the need for separate energy supply and data transmission processes, reducing overall energy consumption while maintaining enhanced communication security through parameter-diversified signals.
Data Source
AI summary
A first device, a second device, and a third device are provided. The first device includes a transceiver, a processor coupled to the transceiver, and a memory storing a computer program which, when executed by the processor, causes the first device to send a first signal to a third device. The first signal includes M energy supply signals, the M energy supply signals occupy the same time domain range, and the time domain range contains multiple time periods. Each of the M energy supply signals is generated based on a different first parameter in each of different time periods among the multiple time periods, and different energy supply signals among the M energy supply signals are generated based on different first parameters in a same time period among the multiple time periods. M is an integer greater than or equal to 2.