Communication method and device for network-on-chip congestion

By introducing a multi-channel distributed bus into the on-chip network, collecting and transmitting blocking information, updating the global state table, and planning communication links, the lag problem of the dynamic avoidance algorithm in NOC is solved, and the communication efficiency and stability of the system are improved.

CN120973729AActive Publication Date: 2025-11-18INSPUR SUZHOU INTELLIGENT TECH CO LTD
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Patent Information

Application Number
CN202511500371.0
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-10-20
Publication Date
2025-11-18
Estimated Expiration
2045-10-20

AI Technical Summary

Technical Problem

The dynamic avoidance algorithm in NOC only changes the route after the data packet arrives in the blocking neighborhood. It lacks global traffic prediction, which causes the avoidance operation to lag behind the speed of blocking spread and places a heavy burden on the global acquisition controller.

Method used

A multi-channel distributed bus is set up in the on-chip network to connect the central controller and multiple routing nodes. The multi-channel distributed bus collects and transmits blocking information, updates the global information status table, plans communication links, and reduces the dependence on the central controller.

Benefits of technology

By collecting and transmitting data via a multi-channel distributed bus, refined proactive uploading and targeted broadcasting of global traffic are achieved, reducing cabling costs and redundant information propagation, and improving the efficiency of communication routing planning and the overall system operating efficiency.

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Abstract

The invention discloses a communication method and device for network-on-chip congestion, and relates to the technical field of computers, a chip where a network-on-chip is located is provided with a multi-channel distributed bus which is the same as a target routing direction of the network-on-chip, and the multi-channel distributed bus is used for being connected with a centralized controller and a plurality of routing nodes on the chip, the method comprises the following steps: detecting blocking information of a plurality of input directions corresponding to a plurality of routing nodes, so as to send the blocking information to a physical bus related to the blocking information; and updating the global information state table according to the blocking information to query the blocking information of the task routing node related to the communication task so as to plan a communication link of the communication task, and executing the communication task according to the communication link. The problems that the avoidance operation of NOC often lags behind the blocking diffusion speed and the communication burden of the global acquisition controller is large are solved, and the technical effects of finely and actively uploading and directionally broadcasting information, reducing the burden of the centralized controller, avoiding blocking in advance and solving the communication route planning problem are achieved.
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