Industrial Network Time-Slot Scheduling for Isochronous Transmission
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Solution Overview
Problem
Conventional industrial networks fail to enable reliable isochronous data transmission across large spatial areas, particularly in industrial environments, due to limitations in cellular infrastructure, congestion, and the inability to integrate wired and wireless infrastructure effectively, leading to operational delays and limitations in data transmission capacity.
Innovation Solution
A method and system for isochronous data transmission in industrial networks using pre-scheduled time slots, involving a network controller, wireless devices, and routing means to synchronize and allocate communication links, ensuring reliable and low-latency transmission of both structured and unstructured data across cellular and fixed networks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If cellular infrastructure is used for industrial network communication, then wireless connectivity and large spatial coverage are enabled, but reliable isochronous data transmission cannot be guaranteed due to random link allocation and congestion
Solution Approach 1:
The patent applies preliminary action by pre-scheduling uplink time slots for industrial devices before data transmission occurs. The network controller allocates specific time slots to devices in advance, ensuring that devices know when to transmit data, thereby eliminating random access conflicts and guaranteeing reliable isochronous transmission over the wireless cellular infrastructure.
Solution Approach 2:
The patent implements periodic action through structured time-division multiplexing where uplink and downlink transmissions occur in periodic time slots. This periodic structure organizes wireless communication into predictable cycles, ensuring that industrial devices receive regular, timed opportunities to transmit data, thus achieving isochronous communication over cellular networks.
2Quantity of substance
If more industrial devices are attached to the cellular infrastructure, then network capacity is increased, but communication links become congested and transmission reliability decreases
Solution Approach 1:
The patent applies segmentation by dividing the shared cellular communication channel into dedicated time slots for different industrial devices. Instead of allowing all devices to compete for the same communication resources simultaneously, the network controller segments the transmission medium temporally, allocating specific time windows to each device, thereby eliminating congestion while supporting multiple connected devices.
Solution Approach 2:
The patent implements dynamics through flexible time slot allocation that can adapt to varying network conditions and device requirements. The network controller dynamically manages the allocation of uplink time slots based on current network state, device priorities, and traffic demands, allowing the system to efficiently handle varying numbers of connected devices while maintaining transmission reliability.
3Adaptability or versatility
If wired infrastructure is integrated with wireless cellular infrastructure, then network versatility and coverage are improved, but system complexity increases
Solution Approach 1:
The patent applies universality by designing a unified network controller that manages both wired and wireless cellular infrastructure through a common control plane. This universal controller implements consistent time-division multiplexing and resource allocation algorithms for both connection types, allowing the system to handle diverse device connections through a single, multi-functional management architecture rather than separate specialized systems.
Data Source
AI summary
A method for isochronous data transmission in industrial network. The industrial network includes first sub-network including first industrial devices and first base station, second sub-network including second industrial devices and first routing means, first wireless device configured to provide a communication between the first industrial devices and the first base station, a network controller coupled to the first base station and to the first routing means, and a reference clock. The method including providing first timing information to the first sub-network and second timing information to the second sub-network, configuring the first wireless device to transfer data from the first industrial devices to the network controller based on the first timing information, receiving the data from the first sub-network and transferring the received data from the network controller to the second industrial devices of the second sub-network via routing means using the second timing information.