FDD Wireless Communication Control Through Impedance-Switched Backscatter
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Solution Overview
Problem
Conventional wireless communication devices using FDD schemes are highly energy-consuming due to the continuous operation of energy-intensive electronic components, especially when operating at short ranges, leading to high operating costs and inefficient energy use.
Innovation Solution
Implement a controlling device that alternates the impedance of the processing chain between two distinct modes, enabling the device to backscatter ambient signals, thereby reducing the need for traditional communication modes and minimizing energy consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional FDD architecture with continuously powered electronic components is used, then communication reliability is maintained, but energy consumption increases significantly
Solution Approach 1:
The patent applies dynamics by making the electronic components switchable between powered and unpowered states. The switching means enable the system to dynamically adjust its operational state based on communication needs, transitioning from continuous operation to intermittent operation, thereby reducing energy consumption while maintaining communication reliability when needed.
Solution Approach 2:
The patent implements periodic action through the switching means that power electronic components only during necessary communication intervals rather than continuously. This periodic powering approach maintains communication reliability during active periods while significantly reducing overall energy consumption during idle periods.
2Use of energy by moving object
If switching means are added to power electronic components selectively, then energy consumption is reduced, but device complexity increases
Solution Approach 1:
The patent applies universality by designing the switching means to serve multiple functions: controlling power delivery to electronic components, managing impedance matching, and enabling different communication modes. This multi-functionality reduces the need for separate dedicated components, thereby limiting the increase in device complexity while achieving energy savings.
Solution Approach 2:
The patent utilizes parameter changes by modifying the impedance characteristics of the processing chain through the switching means. By changing impedance parameters rather than simply adding or removing components, the system achieves energy efficiency while maintaining relatively simple device architecture, as impedance control can be accomplished through existing circuit elements.
3Use of energy by moving object
If impedance alternation mode is implemented for backscatter communication, then energy consumption is minimized, but communication range may be affected
Solution Approach 1:
The patent applies dynamics by enabling the processing chain to switch between different impedance modes (first mode for conventional communication, second mode for backscatter communication). This dynamic switching allows the system to optimize its operation based on the communication scenario, maintaining communication range while minimizing energy consumption during backscatter operations.
Solution Approach 2:
The patent implements parameter changes by altering the impedance characteristics of the processing chain to enable backscatter communication mode. By changing the impedance parameter rather than fundamentally altering the communication physics, the system maintains compatibility with existing communication ranges while achieving energy efficiency through ambient signal utilization.
Data Source
AI summary
A control device for controlling the operation of a wireless communication device is described. The wireless communication device includes an antenna, a front-end module configured for transmitting and receiving signals according to a time-division multiplexing scheme, and switching means which can switch at least one transmission or reception chain of said front-end module between first and second modes in which the processing chain presents different impedances to the antenna. The control device can be integrated in the communication device and includes a control module to control the switching means so that the processing chain alternates between said first and second modes so that the communication device backscatters an ambient signal.