Routing Control Unit for Low Latency Frame Transfer
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Solution Overview
Problem
Existing network communication systems face latency issues when transferring data across multiple networks, as they often rely on inefficient data relay mechanisms that do not effectively manage frame transmission and retransmission.
Innovation Solution
A control apparatus is designed to connect multiple networks by using a routing control unit, transmission queues, and a signal handling unit to manage frame transfer and retransmission efficiently, with features like an MPFO buffer, retry counter, and protocol conversion to prioritize and handle frames and retransmissions effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If data is relayed across multiple networks using conventional methods, then network connectivity is achieved, but communication latency increases
Solution Approach 1:
The system performs preliminary actions by pre-managing buffer states and proactively notifying relay source networks before transmission. The buffer management unit monitors buffer fullness in advance and sends notifications to prevent data blocking, enabling the relay destination network to prepare for incoming data and reduce latency.
Solution Approach 2:
The relay destination network acts as an intermediary that receives data from multiple relay source networks, manages buffer storage, and coordinates transmission. This intermediary function enables efficient data routing and reduces communication latency by centralizing buffer management and proactive notification mechanisms.
2Reliability
If buffers are used to store frames for retransmission, then data loss is prevented, but device complexity increases
Solution Approach 1:
The buffer management function is segmented into distinct units: the buffer management unit that monitors buffer states, the notification unit that communicates with relay source networks, and the relay destination network that handles data storage and retrieval. This segmentation reduces complexity by distributing functions across separate modules.
Solution Approach 2:
The system implements feedback mechanisms where the buffer management unit continuously monitors buffer fullness and sends notifications to relay source networks. This feedback loop enables dynamic adjustment of data transmission, preventing buffer overflow while maintaining simple operational procedures through automated state monitoring and notification.
3Reliability
If multiple buffers are allocated for different networks, then data transmission reliability is improved, but memory usage increases
Solution Approach 1:
The buffer management unit serves multiple functions: monitoring buffer states, managing frame storage, sending notifications to relay source networks, and coordinating with the relay destination network. This multi-functional design reduces the need for separate dedicated buffers for each function, optimizing memory usage while maintaining transmission reliability across multiple networks.
Data Source
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AI summary
It is possible to perform transfer with low latency. The control apparatus includes a routing control unit, transmission queues, and a plurality of controllers. The routing control unit includes a buffer, a normal transmission unit configured to output, among inputted frames, a frame other than a frame to be retransmitted to the transmission queue of the controller corresponding to a network serving as a transfer destination, and, when the controller corresponding to the network serving as the transfer destination is in a full state in which no more frames cannot be stored in the transmission queue, specify the inputted frame as the frame to be retransmitted and store the inputted frame in the buffer, and a signal handling unit configured to, when a cancellation signal indicating that the full state has been canceled is received from any of the plurality of controllers, output, to the transmission queue of the controller that has transmitted the cancellation signal, the frame to be retransmitted that is to be transferred to the network corresponding to the controller that has transmitted the cancellation signal. When the full state is canceled, the controller transmits the cancellation signal to the signal handling unit.