Clock Device PTP Packet Domain Number Verification
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Solution Overview
Problem
Current solutions lack the ability to determine and process Precision Time Protocol (PTP) packets that are not intended for a specific device, leading to potential discarding of packets that are necessary for end-to-end synchronization in IP transformation of radio access networks, affecting network evolution and performance.
Innovation Solution
A method and clock device that receive PTP packets, determine whether the domain number matches the configured domain number, and forward or process the packets accordingly, ensuring that non-device PTP packets are not discarded, thereby enabling end-to-end synchronization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the clock device processes only PTP packets intended for itself based on prior art, then the device complexity is reduced, but the reliability of end-to-end synchronization is compromised because non-device PTP packets are incorrectly discarded
Solution Approach 1:
The patent introduces a domain number as an intermediary identifier in PTP packets to distinguish between device-specific packets and transit packets. The clock device compares the domain number in received packets with its configured domain number to determine whether to process or forward the packet, enabling reliable end-to-end synchronization without incorrect discarding of transit packets
2Productivity
If the clock device forwards all received PTP packets without domain number verification, then the productivity of packet processing is improved, but the measurement precision of packet routing is worsened because the device cannot distinguish between packets intended for itself and packets for other devices
Solution Approach 1:
The patent applies preliminary action by pre-configuring the domain number in the clock device before operation. When a PTP packet is received, the device immediately compares the packet's domain number with the pre-configured domain number to quickly determine the appropriate action (process or forward), enabling high-speed packet processing with accurate destination identification without complex real-time analysis
Data Source
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AI summary
The present invention discloses a method for processing a Precision Time Protocol packet and a clock device. The method includes: receiving, by a clock device, a Precision Time Protocol packet, where the Precision Time Protocol packet carries end-to-end parameter information; determining, by the clock device according to the end-to-end parameter information, whether the received Precision Time Protocol packet is not a Precision Time Protocol packet of the device; and forwarding, by the clock device, the Precision Time Protocol packet that is not a Precision Time Protocol packet of the device when the received Precision Time Protocol packet is not a Precision Time Protocol packet of the device. In the embodiments of the present invention, determining and processing of the Precision Time Protocol packet that is not a Precision Time Protocol packet of the device may be implemented and implementation of end-to-end synchronization is ensured.