公开(公告)号：US09906434B2

公开(公告)日：2018-02-27

申请号：US14784012

申请日：2014-04-11

Applicant: SELEX ES S.p.A.

Inventor： Francesco Gei ,  Niccolo Privitera ,  Gabriele Tamea

IPC: H04L12/761 ,  H04L12/733 ,  H04L12/18 ,  H04W40/24 ,  H04W40/26 ,  H04L12/721 ,  H04W84/18

CPC classification number: H04L45/16 ,  H04L12/185 ,  H04L45/20 ,  H04L45/26 ,  H04W40/246 ,  H04W40/26 ,  H04W84/18

Abstract: A communication method of the SMF type for a network of nodes including a multicast group. The method includes the steps, performed by a first node, of: determining a set of respective multipoint relays; determining the nodes for which the first node is a multipoint relay; determining a routing table including identifiers of destination nodes and corresponding identifiers of next-hop nodes; receiving a multicast packet sent from a sending node, where the first node is a multipoint relay; checking if, for each node identifier of the multicast group, the entry in the routing table that includes a destination node identifier corresponding to the node identifier of the multicast group contains a next-hop node identifier that corresponds to the sending node, and if the counter contained in the multicast packet respects a relation with a limit; and determining whether to retransmit the multicast packet, on the basis of the outcome of the checking step.