Bus Network Broadcast Data Transmission Protocol
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current data transmission methods in bus networks, particularly in safety technology, are inefficient due to the need to transmit redundant overhead data, leading to increased reaction times and reduced effectiveness, especially in point-to-point transmission systems like Interbus, where data is typically accessed only at the master or downstream locations.
Innovation Solution
Implementing a broadcast message within the point-to-point transmission protocol allows for the transmission of selected data in a broadcast mode, reducing overhead data and enabling flexible access to safety-relevant data at any location, thereby enhancing transmission efficiency and reducing reaction times.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If point-to-point transmission method is used, then data can be transmitted to individual subscribers, but overhead data must be transmitted individually for each subscriber reducing transmission effectiveness
Solution Approach 1:
The patent merges multiple individual data transmissions into a single broadcast transmission. Instead of sending separate data streams to each subscriber, the system transmits a single broadcast message that contains all necessary data, which is then distributed to all subscribers simultaneously. This eliminates redundant overhead data and significantly improves transmission effectiveness while maintaining data reliability through the broadcast protocol.
2Adaptability or versatility
If individual data transmission for each subscriber is implemented, then specific data can be delivered to targeted subscribers, but reaction time increases due to redundant overhead data
Solution Approach 1:
The system performs preliminary organization of data into a broadcast message structure that anticipates the needs of all subscribers. By pre-packaging all necessary data in a single transmission frame with proper addressing and formatting, the system eliminates the sequential transmission delays that would occur with individual data sends, thereby reducing reaction time while maintaining the ability to target specific subscribers.
3Device complexity
If data is accessed only at master or downstream locations, then system architecture remains simple, but access flexibility to data is limited
Solution Approach 1:
The broadcast transmission mechanism provides universal data access capability to all subscribers regardless of their position in the network. Each subscriber can receive and process broadcast messages containing data relevant to their function, enabling any subscriber to access any data transmitted on the bus. This multi-functional access capability is achieved through standard broadcast protocol features rather than complex routing logic, maintaining architectural simplicity while dramatically improving data access flexibility.
4Productivity
If broadcast transmission is implemented, then overhead data is reduced and transmission efficiency increases, but compatibility with existing point-to-point protocols must be maintained
Solution Approach 1:
The system changes the transmission mode parameter from individual point-to-point transmissions to a single broadcast transmission. By modifying the protocol parameters to support broadcast addressing and message formatting, the system achieves higher transmission efficiency. The broadcast messages are structured with specific address fields and data formats that allow existing point-to-point protocol hardware to process them, maintaining compatibility while enabling efficient broadcast operation.
Data Source
AI summary
There is provided a method for the transmission of data via a bus network to which a plurality of subscribers are connected. The method includes a first step of transmitting data from at least one subscriber, e.g., Master, to at least another subscriber, e.g., TNx or STNx, by employing a data transmission protocol designed for point-to-point transmission. The method includes a second step of defining a broadcast message, within which selected data can be transmitted in a broadcast transmission mode, within the point-to-point transmission protocol. In a supplementary or alternative embodiment, the method includes inserting a safety broadcast message in addition to a standard or general broadcast protocol. There is also provided an apparatus for transmission of data via a bus network.