Telefonaktiebolaget Lm Ericsson (publ)

István Moldován

János Farkas

Balázs Varga

Stefano Ruffini

András Kern

Csaba Simon

Systems and methods for packet or frame replication and elimination in a Time Sensitive Networking (TSN) network or Deterministic Networking (DetNet) network are disclosed. In some embodiments, a method of operation of a node in a TSN network or DetNet network comprises determining whether to reset a sequence recovery function used for frame or packet elimination for a particular stream of packets based on either or both of an explicit indication or an implicit indication and resetting the sequence recovery function used for frame or packet elimination for the particular stream of packets upon determining to reset the sequence recovery function. In this manner, packet or frame elimination is improved by avoiding scenarios that result in discarding valid packets or frames due to an out of sync condition between the sequence generation function at the replicator and the sequence recovery function at the eliminator.

Packet or frame replication and elimination with explict or implict notification to reset sequence number recovery

A system comprising one or more network elements and configured to process at least first and second packet flows. The system comprises a first packet gate selectively switchable between an open state for packet transmission and a closed state and an associated first packet queue. The first packet gate and the first packet queue are configured to handle first packet flow packets. The system further comprises a second packet queue configured to handle second packet flow packets. Moreover, the system comprises at least one processor configured to control switching of the first packet gate between the open state and the closed state based on the occurrence of a first event associated with the second packet queue to trigger transmission of the first packet flow packets in a relative transmission order among the first packet flow packets and the second packet flow packets.

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Budapest, Hungary

István Moldován