MUMBAI, India, April 17 -- Intellectual Property India has published a patent application (202641043333 A) filed by Bapatla Surendra Babu; and Irukumalli Priyanka, Tenali, Andhra Pradesh, on April 4, for 'reciprocal-channel dispersion-fingerprint asymmetry-immune synchronizing protocol apparatus exploiting one-way group delay extraction.'
Inventor(s) include Bapatla Surendra Babu; and Irukumalli Priyanka.
The application for the patent was published on April 17, under issue no. 16/2026.
According to the abstract released by the Intellectual Property India: "An apparatus executes sub-nanosecond network synchronization by utilizing channel dispersion as a symmetric timing reference. A first network node (110) and a second network node (120) communicate via a bidirectional communication link (130). A probing signal generator (140) transmits a predefined probing signal (150). A channel impulse response estimator (230) performs correlation processing to extract a channel dispersion fingerprint (220), deriving a group delay (310) independently of round-trip measurements. Based on measured reciprocal characteristics (210), the group delay is mathematically identical in both directions, establishing a true one-way delay (340). This actively provides asymmetry error compensation (330) against errors inherent in a conventional PTP system (320). A synchronization processor (410) compensates for deterministic non-reciprocal elements (420). The apparatus achieves sub-nanosecond synchronization accuracy (430) and GPS-independent synchronization (440) utilizing dedicated hardware on existing networks."
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