Cell exchange method and system based on flexe service

Abstract

The invention discloses a method for exchanging cells based on FlexE services, which relates to the communication field and includes the steps of: sequentially dividing a FLEX data code stream into a plurality of slice packets at a sending end, and inserting a packet overhead with a time mark into the slice packets; The receiving end caches the received slice packet, parses the packet overhead before or after caching the slice packet, obtains the time stamp of the slice packet, and obtains the path of the slice packet according to the time stamp of the slice packet and the time when the receive end receives the slice packet Delay, to determine whether the path delay of the slice packet exceeds the preset maximum line delay, if not, read the slice packet, and reassemble the slice packet payload after stripping the packet overhead of the slice packet, if it exceeds , an alarm signal is issued. The method for realizing ultra-low delay cell exchange based on the FlexE service provided by the present invention caches and forwards slice packets after slice processing, so that the transmission efficiency is high and the reliability is good.

Description

technical field [0001] The invention relates to the communication field, in particular to a method and system for exchanging cells based on FlexE services. Background technique [0002] FlexE (Flex Ethernet) technology is a new flexible Ethernet technology emerging recently. It not only realizes the decoupling of MAC rate and physical interface rate, but also greatly enhances the application flexibility of Ethernet interface. It can also expand FlexE shim switching and OAM expansion. , ultra-fast protection switching technology, clock synchronization and other technologies are important solutions for mobile backhaul networks in the 5G era. [0003] Specifically, Flex Ethernet is an intermediary layer established between the MAC and the physical layer (PHY) or the physical coding sublayer (PCS), which is used to adjust the elastic mechanism for matching the MAC rate and the PCS rate, and obtain relevant packets and Data rate information and instructs the PCS to re-encode as ...

AI Technical Summary

Problems solved by technology

[0005] In the prior art, in order to realize cell exchange, the FLEX Client 66B data code stream that has not been sliced ​​is usually cached and forwarded directly to a complete packet. It takes a long time to cache and forward a complete packet, the cache time is long, and no added The data packet field cannot monitor the delay time and link status. When an error occurs in data transmission, it cannot quickly locate the erroneous data and cannot recover in time, resulting in low transmission efficiency and poor reliability of the FLEX data stream.

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