Wireless Packet Transmission with Constant Data Intervals
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Solution Overview
Problem
Industrial automation systems face challenges with wired communication links, which are complex and costly to manage, and wireless solutions like Wi-Fi introduce unpredictable data exchange times, unsuitable for processes requiring tight timing requirements.
Innovation Solution
Implementing a method for wireless packet transmission and reception using Wi-Fi that involves a random or pseudorandom time period before transmission and positioning data portions within packets to ensure constant time intervals, reducing jitter and maintaining predictable data exchange times.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If wireless communication (Wi-Fi) is used to replace wired cables, then device complexity and installation cost are reduced, but data exchange time becomes unpredictable and timing precision deteriorates
Solution Approach 1:
The patent implements periodic transmission slots where devices are allocated specific time windows for communication. Each device transmits data at predetermined periodic intervals within its assigned slot, transforming the unpredictable wireless medium into a structured periodic communication pattern that ensures timing precision while maintaining wireless simplicity
Solution Approach 2:
The system performs preliminary allocation of time slots and frequencies before actual data transmission begins. By pre-configuring the communication schedule and reserving resources in advance, the system eliminates timing uncertainty during actual data exchange, ensuring predictable performance without complex real-time coordination
2Ease of operation
If random access protocol is used for wireless transmission, then ease of operation is improved, but data exchange time variability increases
Solution Approach 1:
The patent segments the wireless communication channel into distinct time slots and frequency bands, allocating specific segments to different devices or data types. This segmentation eliminates collisions and random access delays by providing dedicated transmission paths, ensuring consistent data exchange times while maintaining operational simplicity through automated slot-based access
3Manufacturing precision
If wired Ethernet cables are used for communication, then data exchange timing precision is maintained, but device complexity and installation cost increase
Solution Approach 1:
The patent replaces the physical mechanical connection of wired Ethernet cables with wireless electromagnetic communication. By using structured wireless protocols with predetermined time slots and frequency allocations, the system achieves timing precision comparable to wired connections while eliminating the physical infrastructure complexity of cables, connectors, and physical layout constraints
Data Source
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AI summary
In one example aspect, a method of transmitting packets wirelessly is provided. The method comprises, for each packet, requesting to transmit the packet, waiting for a respective random or pseudorandom time period before transmitting the packet, and transmitting the packet containing a respective data portion, wherein a position of the respective data portion in the packet is selected such that a time interval between transmission of respective data portions in adjacent packets is a constant time interval.