Low-Energy Wireless Link with Higher Data Rate and Lower Airtime
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Solution Overview
Problem
Current Bluetooth specifications, such as BT 5.0, have limited data rates that are insufficient for high-bandwidth applications like 3D or multi-channel high-resolution audio, and can cause interference with other wireless protocols using the same frequency bands due to their low data rates and high airtime usage.
Innovation Solution
An enhanced data rate low-energy (ELE) wireless communication protocol is developed, supporting 4 MHz channel widths, symbol rates of up to 4 million symbols per second, and physical layer rates of 1, 2, 4, 8 Mbps or higher, using differential quadrature phase shift keying (DQPSK) and other encoding schemes, with features like low latency reconnect mechanisms and dynamic frequency selection to minimize interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If Bluetooth LE uses lower data rate protocols, then energy consumption is reduced, but airtime usage increases causing interference with other wireless protocols
Solution Approach 1:
The patent changes the data rate parameter from traditional Bluetooth LE rates (1 Mbps or 2 Mbps) to higher rates (4 Mbps, 8 Mbps, or higher) while maintaining low energy consumption through optimized transmission protocols. This allows the system to achieve higher throughput without proportionally increasing energy usage, thereby reducing airtime occupation and interference with co-channel protocols like WiFi and LTE.
2Productivity
If Bluetooth LE increases data rate to support high bandwidth applications, then airtime usage is reduced, but support for high data rate applications is insufficient
Solution Approach 1:
The patent implements dynamic data rate adaptation where the system can adjust transmission rates between 1 Mbps, 2 Mbps, 4 Mbps, 8 Mbps, and higher based on application requirements and channel conditions. This dynamic capability enables support for high bandwidth applications like multi-channel high resolution audio when needed, while allowing lower rates for simpler applications to conserve energy.
3Loss of time
If Bluetooth LE uses higher data rates, then airtime usage is reduced, but energy consumption may increase
Solution Approach 1:
The patent employs periodic transmission patterns and sleep/wake cycles where devices transmit data in concentrated bursts at higher rates when data needs to be sent, then return to low-power states. This periodic action reduces overall airtime usage compared to continuous low-rate transmission, while the high-rate bursts are energy-efficient because they complete data transfer faster, allowing longer periods in low-power mode.
Data Source
AI summary
In some aspects, the disclosure is directed to methods and systems for an enhanced data rate, low energy wireless communication. Devices may communicate over predetermined wireless bands such as the 2.4 GHz and 5 GHz ISM bands, using π/4-differential quadrature phase shift keying, with physical layer rates of 1, 2, 4, 8 Mbps or higher. Symbol timing may be at any frequency, and may be 256 ns in some implementations. In some implementations, to extend device battery life, devices may use a low latency reconnect mechanism allowing frequent hibernation or shutdown of transmitters and/or carriers.