Abstract: The present invention relates to a method, routing device, and access device for forwarding a data packet with multicast purpose to a connection-oriented network, wherein a predetermined broadcast address is added to the data packet if the address of the data packet to be sent is a network-layer multicast address. Based on the broadcast address, the data packet is forwarded to a plurality of access devices (31-3n) of the connection-oriented network, arranged to check whether the destination address of the data packet is supported. Then, the data packet is forwarded from a supporting access device (32) to the destination address. Thereby, the data packet does not have to be sent to every possible destination address one by one, and link capacity can be saved.

Abstract: The present invention relates to a method and network system for changing a routing path between a first data network and a mobile station attached to a second data network. The said first data network comprises at least one first network node. The second data network comprises at least a second network node and a third network node. The routing path comprises before said change said first network node, said second network node and said third network node, and after said change said first network node, and said third network node. According to the method of the invention the method comprises a step of transferring an information element from said second network node to said third network node, wherein said information element comprises an identification element of said first network node.

Abstract: The present invention relates to a method, routing device, and access device for forwarding a data packet with multicast purpose to a connection-oriented network, wherein a predetermined broadcast address is added to the data packet if the address of the data packet to be sent is a network-layer multicast address. Based on the broadcast address address, the data packet is forwarded to a plurality of access devices (31-3n) of the connection-oriented network, arranged to check whether the destination address of the data packet is supported. Then, the data packet is forwarded from a supporting access device (32) to the destination address. Thereby, the data packet does not have to be sent to every possible destination address one by one, and link capacity can be saved.

Abstract: The present invention describes a method and system for reserving transport resources in a communication network, wherein transport resources have to be reserved for data transmissions. The present invention can be used in any mobile or wireline network if there exists some resources that should be reserved and the reservation takes time. The solution for reserving resources described in the present invention can be used to trigger resource reservation and/or a setup of a resource, if the transport protocol session setup messages can be distinguished from other messages. In the preferred embodiment of the present invention, the need of resources is predicted by monitoring the TCP packets. The session level setup messages indicate the forthcoming arrival of data and trigger the resource allocation.

Abstract: A method for ensuring continuity of a communication session when a user equipment hands over from a first communication network to a second cellular communication network is provided. The method, in one embodiment, includes the steps of performing an authentication procedure for a packet data session with the second network while still being attached to the first network and simultaneously performing a packet data session establishment procedure with the second network while still being attached to the first network.

Abstract: The invention relates to a method and system for managing data flow between Mobile Nodes (MNs), Access Routers (AR) and peer nodes (HA, CNs), wherein, when a Mobile Node makes handover from one Access Router (AR) to new Access Router (AR2, AR3, . . . ARn), a decision is made whether to command the first Access Router (AR1) to act as an Anchor Access Router and forward data from the peer nodes (HA, CNs) to the Mobile Node via the new Access Router (AR2, AR3, . . . ARn), or to send an update of the new position of the mobile node to a peer node (HA, CN). The decision is made based on at least one of the following criterias: -the number of peer nodes (HA,CN1, CN2, . . . CNn) to which it has ongoing sessions, -the time elapsed from a previous update sent to the peer nodes (HA, CNs), -the traffic activity between the peer node(s) (HA, CN1, CN2, . . .

Abstract: The present invention describes a method, system, IP base station and radio network access server for identifying and selecting network nodes in a telecommunication system comprising a core network comprising a plurality of core network nodes, a plurality of radio network access servers belonging to one or more pool-areas and one or more IP base stations each of which being connected to one or more radio network access servers and a plurality of mobile terminals connected to one or more IP base stations. In the method, a core network node and a radio network access server in the pool-area is selected in connection with the core network node at the time of setting up a signaling connection to the core network and address information of the selected core network node to be used in the signaling connection set-up is sent to the selected radio network access server.