US 11,818,053 B2
Extending acceptable sequence range
Bernard Francois St-Denis, Ottawa (CA)
Assigned to NXP B.V., Eindhoven (NL)
Filed by NXP B.V., Eindhoven (NL)
Filed on May 18, 2022, as Appl. No. 17/663,867.
Claims priority of application No. 21177260 (EP), filed on Jun. 1, 2021.
Prior Publication US 2022/0385588 A1, Dec. 1, 2022
Int. Cl. H04L 47/34 (2022.01); H04L 47/32 (2022.01)
CPC H04L 47/34 (2013.01) [H04L 47/32 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A sequence recovery method executed by a node in a time-sensitive network and configured to transmit and receive packets, the method comprising:
receiving a packet having a first sequence number;
determining whether the first sequence number is within a predetermined range of a reference sequence number, wherein the reference sequence number is a current latest sequence number accepted by the node and wherein the predetermined range comprises a history range and a future range, wherein the history range has a length equal to a history length and includes the reference sequence number and a predetermined number of consecutive sequence numbers that are immediately earlier than the reference sequence number, and the future range has a length equal to a future length and defines a predetermined number of consecutive sequence numbers that are immediately later than the reference sequence number, wherein the future length is greater than the history length;
in response to the first sequence number being outside of the predetermined range, discarding the packet; and
in response to the first sequence number being within the predetermined range, accepting the packet.