Wireless Protocol Reducing Receiver On-Time for Low Power Devices
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Solution Overview
Problem
Existing wireless communication protocols for small and energy-limited devices, such as powered ophthalmic lenses, face challenges in minimizing receiver on-times, leading to high power consumption and increased component size and cost due to the need for long preambles and synchronization processes.
Innovation Solution
A wireless communication protocol that reduces receiver active time by using a message frame with a synchronization word, address word, and data word, where the receiver searches for the synchronization word for a duration equal to the frame length plus one symbol, and only decodes the frame if the synchronization word is found, allowing for intermittent transmission and reduced power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional wireless communication protocols are used with long preambles and synchronization processes, then communication reliability is improved, but receiver power consumption increases and component size increases
Solution Approach 1:
The patent extracts and eliminates the traditional long preamble and extended synchronization processes from the communication protocol. By removing these redundant components and implementing a streamlined synchronization mechanism, the protocol achieves reliable communication without requiring the receiver to remain active for extended periods, thereby significantly reducing power consumption in energy-constrained devices.
Solution Approach 2:
The patent implements preliminary synchronization actions where the receiver performs quick synchronization checks at predetermined intervals before fully activating for data reception. This preliminary action allows the receiver to determine whether a transmission is present without committing to a long active state, reducing overall power consumption while maintaining communication reliability.
2Measurement precision
If conventional wireless communication protocols with long preambles are used, then synchronization accuracy is improved, but receiver on-time increases leading to higher power consumption
Solution Approach 1:
The patent removes the traditional long preamble structure and replaces it with a compact synchronization mechanism. This extraction eliminates the time-consuming synchronization process while maintaining adequate synchronization accuracy through optimized synchronization word detection and predetermined interval checking.
Solution Approach 2:
The protocol performs preliminary synchronization validation at brief, predetermined intervals before committing the receiver to a full active state. This preliminary action enables quick determination of transmission presence, achieving sufficient synchronization accuracy without extending receiver on-time.
3Reliability
If traditional communication protocols are used, then data transmission completeness is improved, but component size and cost increase due to larger buffer and processing requirements
Solution Approach 1:
The patent extracts and eliminates the need for large buffers and complex processing mechanisms by implementing a streamlined protocol where synchronization words are detected at predetermined intervals. This extraction reduces the data processing burden and buffer requirements, enabling implementation in devices with limited memory and processing capability.
Solution Approach 2:
The protocol performs preliminary synchronization checks before full data reception, allowing the system to determine whether complete data transmission is needed. This preliminary action reduces the average data processing requirement and buffer size needed, decreasing component size and cost while maintaining data transmission completeness.
Data Source
AI summary
A wireless protocol for a communication system is set forth herein which may be utilized for communication between a transmitter and a receiver over any type of communication channel. The wireless communication protocol provides for the reduction of receiver active or on time which in turn lowers power consumption. The wireless communication protocol enables the complexity and receiver size to be reduced. The methodology employed in the protocol utilizes a unique message frame in conjunction with repeated transmission and periodic receiver searching.