Cell switching method and system based on FlexE (Flex Ethernet) business

Abstract

The invention discloses a cell switching method and system based on FlexE (Flex Ethernet) business and relates to the field of communication. The method comprises the steps of segmenting a FlexE datacode stream into a plurality of slice packets in sequence at a transmitting end, and inserting packet cost with time stamps in the slice packets; and caching the received slice packets by a receivingend, analyzing the packet cost before or after the slice packets are cached, thereby obtaining the time stamps of the slice packets, obtaining path delay of the slice packets according to the time stamps of the slice packets and the time of receiving the slice packets by the receiving end, judging whether the path delay of the slice packets exceeds the preset maximum line delay or not, reading theslice packets, stripping the packet cost of the slice packets and then recombining slice packet payloads if the path delay of the slice packets does not exceed the preset maximum line delay, and sending out an alarm signal if the path delay of the slice packets exceeds the preset maximum line delay. According to the ultralow delay cell switching method and system based on the FlexE business provided by the invention, after the slicing processing is carried out, the slice packets are cached and forwarded, so 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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