Intellectual Property India Publishes Patent Application for Low-Latency Distributed Wireless Buzzer System With Deterministic Arbitration And Adaptive Multi-Node Coordination

MUMBAI, India, Sept. 7 -- Intellectual Property India has published a patent application (202641104399 A) filed by Srm Trp Engineering College on August 31, 2026, for Low-Latency Distributed Wireless Buzzer System With Deterministic Arbitration And Adaptive Multi-Node Coordination.

Inventors include Akash C; Arivenkkataram Asj; Sivasubramaniyam S; Aathimuthalvan M; Mr. G. Parameswaran; and Mr. E. Raja.

The application for the patent was published on September 04, 2026, under issue no. 36/2026.

Abstract: The present invention discloses a low-latency distributed wireless buzzer system employing ESP32 microcontrollers and the ESP-NOW peer-to-peer wireless protocol for infrastructure-independent, sub-2-millisecond event detection across multiple participant nodes. The system introduces a dual-core master node architecture in which Core 0 exclusively handles interrupt-driven wireless packet reception and insertion into an RTOS FreeRTOS FIFO queue, while Core 1 executes a Deterministic Arbitration Algorithm (DAA) consuming packets from the queue to select the chronologically first valid winner. Two novel mechanisms are introduced: (1) the Broadcast Guard Window (BGW), a configurable temporal suppression window that prevents re-arbitration from in-flight packets arriving after winner declaration while producing a ranked secondary responder list; and (2) the Heartbeat Protocol enabling dynamic peer registration and real-time node dropout detection without system restart. Arbitration results are transmitted via UART in JSON format to an external Node-RED and Node.js WebSocket pipeline, enabling live web dashboard visualization with total end-to-end latency under 25 milliseconds.

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