公开(公告)号：US20160072699A1

公开(公告)日：2016-03-10

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 ,  H04L12/18 ,  H04W40/24 ,  H04L12/733

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.

Abstract translation: 用于包括多播组的节点网络的SMF类型的通信方法。 该方法包括由第一节点执行的步骤：确定一组相应的多点中继; 确定第一节点是多点中继的节点; 确定包括目的地节点的标识符和下一跳节点的相应标识符的路由表; 接收从发送节点发送的组播分组，其中所述第一节点是多点中继; 检查对于组播组的每个节点标识符，包括与组播组的节点标识符相对应的目的地节点标识符的路由表中的条目包含与发送节点相对应的下一跳节点标识符，并且如果 组播数据包中包含的计数器与限制有关的关系; 以及基于所述检查步骤的结果来确定是否重传所述多播分组。