Sub 1 GHz Transceiver for Low-Power Indoor Localization
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Solution Overview
Problem
Existing mobile devices for wireless data communication face challenges in indoor localization due to interference from obstacles, leading to inaccurate location prediction and high energy consumption, especially when using Wi-Fi and Bluetooth, which limits their uptime and applicability in environments like nursery homes for dementia patients.
Innovation Solution
A mobile device utilizing a sub 1 GHz frequency band for both sending and receiving data, with a wireless transceiver configured to operate in frequency ranges such as 6.765 to 6.795 MHz, 26.957 to 27.283 MHz, 40.66 to 40.70 MHz, 433.05 to 434.79 MHz, 868 to 870 MHz, and 902 to 928 MHz, providing optimized energy characteristics and increased transmission range, and incorporating a sub 1 GHz transceiver like the CC1100 for low-power connectivity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If Wi-Fi and Bluetooth are used for wireless data communication, then data transmission capability is improved, but energy consumption increases and uptime decreases
Solution Approach 1:
The patent changes the frequency parameter from traditional Wi-Fi/Bluetooth bands (2.4 GHz, 5 GHz) to sub-1 GHz frequency band (e.g., 902-928 MHz). This parameter change reduces energy consumption while maintaining data transmission capability, directly resolving the contradiction between productivity and energy use.
2Productivity
If Wi-Fi and Bluetooth are used for indoor localization, then location tracking capability is improved, but location accuracy decreases due to interference from obstacles
Solution Approach 1:
The patent changes the frequency parameter to sub-1 GHz band, which has better penetration characteristics through obstacles like walls and furniture. This enables more accurate RSSI-based distance measurement and location tracking in indoor environments, resolving the contradiction between tracking capability and measurement precision.
3Use of energy by moving object
If sub 1 GHz frequency band is used for wireless communication, then energy consumption is reduced and uptime is extended, but transmission range may be limited
Solution Approach 1:
The patent employs dynamic frequency selection within the sub-1 GHz band, allowing the device to adaptively choose optimal frequencies based on environmental conditions and interference levels. This dynamic approach maximizes transmission range while maintaining low energy consumption characteristics of the sub-1 GHz band.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution extends the device's uptime by reducing energy consumption and improving location accuracy with reduced interference from obstacles, enabling continuous and efficient communication for proactive localization and tracking, suitable for applications in assisted living and beyond.
Implementation Method 1
a wireless transceiver configured for wireless data communication using the same frequency ranges of the sub 1 GHz frequency band for both sending and receiving data
Data Source
AI summary
The invention relates to a mobile device for wireless data communication, the device comprising the following functional units a central data processing unit, a memory unit, a display element, a user interface, a power supply unit, and a wireless transceiver configured for wireless data communication using the same frequency ranges of the sub 1 GHz frequency band for both sending and receiving data, each of the functional units being functionally connected to at least the central data processing unit. Furthermore, a method for communicating data by wireless data communication in a data communication network is disclosed.