Abstract: A method and apparatus for providing uplink macro-diversity in packet-switched networks that allows packets and/or portions of packets, e.g., frames, to be selectively sent from an end node, e.g., wireless communication device or mobile terminal, over a set of multiple communication connections, e.g., physical-layer or link-layer connections, to one or more access nodes, e.g., base stations. Uplink macro-diversity is achieved in part through intelligent selective forwarding over multiple communication connections, where the forwarding decision is controlled by the end node based on a variety of factors, e.g., physical-layer channel conditions and/or higher layer policy. The forwarding decision is executed on a rapid timescale, e.g., on a per packet basis, to adapt to the dynamically varying conditions of the set of communication connections.

Abstract: Routing of packets is controlled in a connectionless routing protocol network including an infrastructure of packet switching nodes interconnected by packet transport links, and a plurality of access nodes to which a routing path, defined by data held in packet switching nodes located along said routing path, may be directed in the infrastructure for a given network address.

Abstract: In a packet switched network, first said network address are allocated to a first mobile node being served via a communications link by a first access node, at least a first routing path in related infrastructure being directed to the first access node for the first network address. Routing in said infrastructure is altered when the first mobile node receives service from a second access node, such that at least a second routing path in the infrastructure is directed to the second access node for the first network address, the second routing path being defined at least in part by one or more host-specific routing entries. During a period of subsequent inactivity, the one or more host-specific routing entries are removed from the infrastructure such that the mobile node has no current routing path.

Abstract: Routing of packets is controlled in a communications network including an infrastructure of packet switching nodes interconnected by packet transport links, and a plurality of access nodes to which a routing path, defined by data held in packet switching nodes located along the routing path, may be directed in the infrastructure for a given network address.

Abstract: Packets are routed in a communications network including an infrastructure of packet switching nodes interconnected by packet transport links, and a plurality of access nodes to which a routing path, defined by data held in packet switching nodes located along the routing path, may be directed in the infrastructure for a given network address. Different types of routing updates are used in a single routing domain.

Abstract: Packets in a packet switching network are routed along a routing path defined by data held in packet switching nodes. One or more network addresses are assigned to a first access node as home addresses. A first home address is allocated to a first mobile node with at least one routing path being directed to a first access node for that first home address. Routing in the packet switched infrastructure is altered when the first mobile node receives service from a second access node by transmitting routing update messages to a limited subset of localized packet switching nodes such that at least one routing path in the infrastructure is directed to the second access node for the first home address. Routing in the infrastructure is subsequently altered such that at least one routing path is directed to the first access node for the first home address, and the first home address is allocated to a second mobile node served by the first access node.

Abstract: Routing of packets to a mobile node in a packet switching network is controlled. Routing the packets comprises generating first routing protocol data for a network address used by a mobile node of the network, the first routing protocol data specifying a characteristic of a first route passing through a first access node of the network, the first access node serving the mobile node via a communications link, and in response to the mobile node receiving service from a second access node, generating second routing protocol data for the network address, by a routing defining process involving transmitting directed routing update messages to a limited number of the packet switching nodes. The second routing protocol data specifies a characteristic of a second route passing through the second access node such that the first and second routing protocol data are held in different sets of packet switching nodes.

Abstract: In a mobile packet network, data is transmitted concurrently from two base stations to a mobile node, for example during handover.

Abstract: The present invention provides a method of, computer programs for and apparatus adapted to operate a communications network to determine membership of a group of access nodes of the communications network with which there is a relatively high probability that a mobile node will be associated after the mobile node has been associated with a first access node, access nodes being linked to other access nodes via data communications links, the method comprising:

Abstract: The present invention provides a method of, computer programs for and apparatus adapted to operate a communications network to generate data defining a forwarding tree for the transmission of messages in said network, said method comprising:

Abstract: A method of controlling routing of packets in a packet switched network including an infrastructure of packet switching nodes interconnected by packet transport links, and a plurality of access nodes to which a routing path, defined by routing entries held in packet switching nodes located along said routing path, may be directed in said infrastructure for a given network address, said method comprising:

Abstract: A method of controlling routing of packets in a communications network including an infrastructure of packet switching nodes interconnected by packet transport links, and a plurality of access nodes to which a routing path, defined by data held in packet switching nodes located along said routing path, may be directed in said infrastructure for a given network address, said method comprising:

Abstract: A method of controlling routing of packets in a communications network including an infrastructure of packet switching nodes interconnected by packet transport links, and a plurality of access nodes to which a routing path, defined by data held in packet switching nodes located along said routing path, may be directed in said infrastructure for a given network address, said method comprising: