Telefonaktiebolaget Lm Ericsson (publ)

Desire Oulai

Suresh Krishnan

Yves Lemieux

Method and nodes for selecting a network prefix to be advertised in an IP network comprising an access router and a mobile node (MN). From the access router, a first validity period is used to advertise at least a first and a second network prefixes towards the MN. The access router receives a message from the MN indicating an intended address thereof that it intends to use. In the access router, based on the message, only one of the first or second network prefix that the MN needs to use is then determined. The access router afterwards advertises towards the MN the only one network prefix with a second validity period longer than the first validity period. The access router may further acquire a current address and a current network prefix used by the MN and it may use these in the determination of the only one network prefix.

Method and network node for selecting a network prefix to be advertised in a communication network

Methods and nodes are provided for efficiently establishing a route between a mobile node and a correspondent node in a Proxy Mobile Internet Protocol network. A return routability procedure is used between a local mobility anchor and a media access gateway on one hand, and the correspondent node on the other hand. The procedure is made without involvement from the mobile node. The procedure is such that the correspondent node handles return routability as per standard mobile IP mechanisms. Following this return routability procedure, a binding of an address of the mobile node with an address of the media access gateway is stored in the correspondent node. This binding allows data traffic to flow between the mobile node and the correspondent node without passing through the local mobility anchor.

Efficient routing between a mobile node and a correspondent node in a proxy mobile IP network

A network, computer readable medium, and method for ranking a plurality of available access networks by a provider, the provider serving a user equipment and the user equipment being configured to connect to at least one of the plurality of available access networks. The method includes receiving a selection request at a selection entity of the provider, where the selection request includes a vector parameter P that includes required characteristics of a data flow for the user equipment, sending from the selection entity a capability request, including the vector parameter P, to the plurality of available access networks, receiving at the selection entity a capability response from the plurality of available access networks, wherein each capability response includes a normalized value expressing a capability of a corresponding available access network to provide the required characteristics of the data flow, and generating a ranking list of the available access networks based on the received normalized values.

Access network selection

Methods and nodes are provided for supporting session continuity for terminals capable of having simultaneous accesses while served by a plurality of gateways. Distinct binding cache entries (BCE) are stored for a terminal, each BCE being related to one of the gateways serving the terminal. The BCEs identify the terminal, provide an address allocated thereto for getting access at a gateway, and identify the gateway providing the access. When detection is made that two of more BCEs relate to the same terminal for distinct gateways, address information is sent to each other gateway.

Growing community of inventors

Longueuil, Canada

Desire Oulai