公开(公告)号：EP1388236B1

公开(公告)日：2010-09-22

申请号：EP02733184.2

申请日：2002-05-03

申请人： Ericsson AB

发明人： CAVIGLIA, Diego ,  FIASCHI, Giovanni ,  LAZZERI, Francesco

IPC分类号： H04L12/56

CPC分类号： H04L12/185 ,  H04L45/10 ,  H04L45/12 ,  H04L45/16 ,  H04L45/26

摘要： A method for multicast routing for a telecommunications network comprising a plurality of communication nodes interconnected by multiple paths, for the establishment of a multicasting connection between a source node and a plurality of destination nodes, in which the destination nodes are informed that a multicast connection request is arriving from a particular source. Each destination node then sends a connection request to the source, and these requests are processed and relayed by each node within the network. The requests are propagated from node to node until they reach the source node, carrying the information on the cost accumulated along the path. Finally, the source node, having received the information on the costs of the possible paths, selects the path which has a satisfactory cost.

公开(公告)号：EP1665826B1

公开(公告)日：2007-01-17

申请号：EP04766713.4

申请日：2004-09-06

申请人： Ericsson AB

发明人： SESSAREGO, Piergiorgio ,  FIASCHI, Giovanni ,  LANTERI, Nadia ,  DAMELE, Agostino

IPC分类号： H04Q3/66 ,  H04Q3/00

CPC分类号： H04Q3/66

摘要： A method for activation of circuits in telecommunications networks comprises a first step in which circuits are preplanned in the network and local definition data are distributed to network members (NE) for connection of sections of the preplanned circuits. In a second step, when it is desired to activate a preplanned circuit, activation messages for the connection of sections making up the preplanned circuit to be activated and which are defined by the data previously distributed to the network members are propagated in the network in cascade among the network members affected by the preplanned circuit by means of overhead bytes of the frames circulating in the network. The data are made up of indexed tables defining pairs formed from "next point (TP) to be connected" and "index" to be propagated for the following cross-connection. A network functioning in accordance with the method is also proposed.

公开(公告)号：EP1563649B1

公开(公告)日：2006-12-20

申请号：EP03808844.9

申请日：2003-10-14

申请人： Ericsson AB

发明人： CAVIGLIA, Diego ,  FIASCHI, Giovanni ,  LAZZERI, Francesco ,  MOLINARI, Mario

IPC分类号： H04L12/56

CPC分类号： H04L41/0668 ,  H04J2203/006 ,  H04L41/0677 ,  H04L45/00 ,  H04L45/22 ,  H04L45/28 ,  H04L69/40

摘要： A data communications system with a plurality of nodes connected by a plurality of links; in which a subset of the links and nodes form a worker path for carrying worker data through the communication system and a further subset of links and nodes provides a protection path for carrying other data in the absence of a fault, in the worker path and for providing an alternative path for the worker data in the event of a fault in the worker path; in which the alternative path is predetermined by protection means prior to the detection of a fault in the worker path.