SMF communication method for a MANET network type, network node and mobile network that implement this method of communication

摘要

A communication method of forwarding type Multicast Simple, SMF, for a network (1) including a plurality of nodes (2), forming at least one multicast group, said method comprising the steps, performed by a first node, of: - determining (7a) between the neighboring nodes, a respective set of multipoint relays; - determining (7b) between the neighboring nodes, the nodes to which the first node is a relay respective multipoint; - determining (8) a table of respective routing, which is formed by a plurality of entries, each entry comprising an identifier of a node corresponding target and an identifier of a node next hop being, said hop node next neighbor the first node and a relay multipoint being the first node and the destination node being connected to the first node via the next hop node; further said method comprising the steps, performed by the first node, of: - determining (9) a set of identifiers of nodes belonging to the multicast group; and - receiving (10) a multicast packet that is sent by a neighbor node sending the first node, and containing an accountant; further said method comprising, if the first node is a multipoint relay the sending node, performing, by the first node, a step of checking (22, 30, 42): - if at least one node identifier belonging to the group multicast for which the input routing table of the first node including a node identifier destination corresponding with said at least one identifier contains a node identifier of the next hop corresponding to the identifier of a different node sending node; and - if the counter is contained in the multicast packet received respects a predetermined mathematical relationship with a threshold value; further said method comprising, if the first node is a multipoint relay the sending node, determining (30; 42), by the first node, whether to perform a step of retransmitting (44) the multicast packet, based on the result of said checking step; said method characterized in that it further comprises the step of retransmitting (44) the multicast packet, if the execution of step retransmission is determined, said step of retransmission retransmit the multicast packet by the first node such being so that the counter value is contained in the retransmitted multicast packet is different from the counter value that is contained in the multicast packet received.