Fractal Tree Network-on-Chip Data Transmission
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Solution Overview
Problem
Existing network-on-chip technologies face challenges in providing a synchronous, pipeline, and reliable approach for broadcast and multicast communication modes among multiple cores, leading to increased communication delay and potential data loss due to asynchronous communication protocols and lack of cooperation among nodes.
Innovation Solution
A fractal tree structure-based data transmit device and method, featuring a central node and leaf nodes connected through forwarder modules, utilizing a Handshake Protocol for data transmission and caching, ensuring data integrity and synchronization across the network-on-chip.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If pipeline data transmission is implemented without coordination protocols, then transmission speed is improved, but data reliability deteriorates due to data conflicts and loss
Solution Approach 1:
The patent implements a handshake protocol where the receiver sends an acknowledgment signal back to the transmitter to confirm data reception. This feedback mechanism ensures that data is successfully received before the transmitter proceeds to send the next data packet, eliminating data loss while maintaining pipeline transmission efficiency. The acknowledgment signal serves as feedback that coordinates the transmission pipeline without blocking the overall speed.
Solution Approach 2:
The patent introduces a buffer as an intermediary component between the transmitter and receiver. The buffer temporarily stores data packets, allowing the transmitter to continue sending data while the receiver processes previous packets at its own pace. This intermediary mechanism decouples the transmission speed from the reception speed, maintaining pipeline flow while preventing data conflicts.
2Adaptability or versatility
If broadcast transmission is implemented on network-on-chip, then communication coverage is improved, but transmission delay worsens due to asynchronous clocks and varying path lengths
Solution Approach 1:
The patent employs periodic clock synchronization signals that are distributed to all nodes in the network-on-chip. These periodic synchronization pulses ensure that all nodes operate on a common timing reference despite having asynchronous local clocks. This periodic action maintains broadcast coverage across the entire chip while minimizing delay variations by keeping all nodes synchronized to the same rhythm.
3Reliability
If data is transmitted through multiple buffering and synchronizing stages, then data integrity is improved, but transmission delay increases
Solution Approach 1:
The patent extracts the essential synchronization and acknowledgment functions from complex multi-stage buffering systems and implements them through a streamlined handshake protocol. Instead of multiple buffering stages, the system uses a single buffer with coordinated send/acknowledge signals that achieve the same data integrity guarantee with fewer delay-inducing stages. The handshake protocol extracts the critical reliability function while eliminating unnecessary delay.
Data Source
AI summary
The present invention provides a fractal tree structure-based data transmit device and method, a control device, and an intelligent chip. The device comprises: a central node that is as a communication data center of a network-on-chip and used for broadcasting or multicasting communication data to a plurality of leaf nodes; the plurality of leaf nodes that are as communication data nodes of the network-on-chip and for transmitting the communication data to a central leaf node; and forwarder modules for connecting the central node with the plurality of leaf nodes and forwarding the communication data; the central node, the forwarder modules and the plurality of leaf nodes are connected in the fractal tree network structure, and the central node is directly connected to M the forwarder modules and/or leaf nodes, any the forwarder module is directly connected to M the next level forwarder modules and/or leaf nodes.