Patent application number | Description | Published |
20090253411 | Authentication In A Communication Network - A mobile wireless terminal, the terminal comprising a generator configured to generate and store a first numerical chain comprising a series of n values using a one-way coding function such that a given value within the chain is easily obtainable from a subsequent value, but the subsequent value is not easily obtainable from that given value, and an authentication requester configured to disclose a value from the numerical chain to an access node, in order to allow the access node to authenticate the mobile wireless terminal, wherein the disclosed value succeeds any values in the chain already disclosed by the mobile wireless terminal. | 10-08-2009 |
20090285181 | IP Mobility - A method of forwarding IP packets, sent to an old care-of-address of a mobile node, to the mobile node following a handover of the mobile node from a first old access router to a second new access router. The method comprises, prior to completion of said handover, providing said first router or another proxy node with information necessary to determine the new IP care-of address to be used by the mobile node when the mobile node is transferred to the second access router. At said first router or said proxy node, the new care-of-address for the mobile node is determined using said information and ownership of the new care-of-address by the mobile node confirmed, and subsequently packets received at said first access network and destined for said old care-of-address are forwarded to the predicted care-of-address address. | 11-19-2009 |
20100106972 | SIGNALLING DELEGATION IN A MOVING NETWORK - In order to delegate location update signaling responsibility from a Mobile Node to a Mobile Router, the Mobile Router is provided with a second symmetric key generated by a Mobile Node using a first symmetric key shared between the Mobile Node and a Peer Node. The Mobile Router is additionally provided with a “certificate” authenticating the second symmetric key using the first symmetric key. In this way, the mobile router can sign location update related messages sent to the Peer Node with the second symmetric key, and can provide the Peer Node with the certificate in order to allow the Peer Node to authenticate the right of the Mobile Router to act on behalf of the Mobile Node. | 04-29-2010 |
20100177698 | Network Based Local Mobility Management - A network comprises a NetLMM domain having at least one Host Identity Protocol proxy coupled to one or more Access Points for communicating with a Mobile Node and acting, in use, as an Access Router for the NetLMM domain. Use of an HIP proxy as an Access Router allows the Access Router itself to be mobile. Furthermore, the Access Router can reside in IPv4 networks, and can even be behind NAT boxes located between the Access Router and a Local Mobility Anchor to which the Access Router is registered. The invention may be applied using a hierarchical architecture in which each domain comprises a respective Local Mobility Anchor coupled to each HIP proxy acting as an Access Router in the domain. The Local Mobility Anchor of a domain may itself be an HIP Local Mobility Anchor. Alternatively, the HIP proxies in a domain may be arranged in a distributed manner. | 07-15-2010 |
20100183018 | Routing In A Network - A network comprises a plurality of Access Routers arranged in one or more NetLMM domains. A domain comprises distributed routing information in the form of one or more Bloom filters or Bloom filter equivalents. In one embodiment, each Access Router may have an associated Local Bloom filter or Bloom filter equivalent that provides information as to which mobile nodes are currently behind the respective Access Router. Each Access Router sends its associated Local Bloom filter or Bloom filter equivalent to every other Access Router of the domain. An Access Router uses the Bloom filters or Bloom filter equivalents received from every other Access Router of the domain to determine to which Access Router to send a packet destined to a specified Mobile Node. Another embodiment uses partly-distributed routing information. | 07-22-2010 |
20100312898 | PUBLISH/SUBSCRIBE NETWORKS - A method of making data, published on a first publication/subscribe (pubsub) network, available to hosts within a second publication/subscribe network where the networks are interconnected via the Internet. The method comprises registering a publication identity of said data within a rendezvous system located within the Internet, forwarding Subscribe requests associated with said publication identity from said second network to said rendezvous system and, at the rendezvous system, identifying a location of said data within said first network. The Subscribe request can then be forwarded to said first network, and said data delivered from said first network to said second network via the Internet. | 12-09-2010 |
20110004766 | IP ADDRESS DELEGATION - A method of verifying a request made in respect of an IPv6 address comprising a network routing prefix and a cryptographically generated Interface Identifier. The request includes a delegation certificate containing a public key of the host, one or more further parameters or a formula or formulae for generating one or more further parameters, a specification of a range or set of IPv6 network routing prefixes, an identity of a delegated host, and a digital signature taken over at least the identity and the specification of a range or set of IPv6 network routing prefixes using a private key associated with the public key. The method verifies that the network routing prefix of said IPv6 address is contained within the specification, verifying that the public key and the further parameter(s) can be used to generate the cryptographically generated Interface Identifier, and verifying said signature using the public key. | 01-06-2011 |
20110149973 | Packet Forwarding In A Network - A method of providing packet routing information comprises: encoding routing information from a source node to one or more destination nodes into a compact representation of set membership; and putting the compact representation of sets into a header of a packet that is to be sent from the source node to the destination node(s). The compact representation may be obtained by: generating d representations of a set of identifiers; generating d candidate compact representations of set membership from the d representations of the identifiers; and selecting one of the candidate compact representation of set membership. The selection may be made on the basis of which of the candidate compact representations has the lowest rate of returning false positives. | 06-23-2011 |
20110202761 | Mobility Handling For Multicast Services - A method of handling mobility of a sender in a multicast packet sending scenario. The method comprises firstly establishing a multicast tree across a packet data network and transmitting multicast packets from the sender to a plurality of receivers via said multicast tree. Prior to a mobility event in respect of said sender, a suitable transfer anchor node is identified within said network, and the tree re-rooted to that transfer anchor node. Subsequently, multicast packets are transmitted from said sender to said transfer anchor node and injected into the multicast tree at said transfer anchor node. Following said mobility event, said sender continues to send multicast packets to said transfer anchor node for injection into the multicast tree. | 08-18-2011 |
20110264913 | METHOD AND APPARATUS FOR INTERWORKING WITH SINGLE SIGN-ON AUTHENTICATION ARCHITECTURE - A method is provided for use in interworking a single sign-on authentication architecture and a further authentication architecture in a split terminal scenario. The split terminal scenario is one in which authentication under the single sign-on authentication architecture is required of a browsing agent ( | 10-27-2011 |
20110274091 | IP Mobility - A method of forwarding IP packets, sent to an old care-of-address of a mobile node, to the mobile node following a handover of the mobile node from a first old access router to a second new access router. The method comprises, prior to completion of said handover, providing said first router or another proxy node with information necessary to determine the new IP care-of address to be used by the mobile node when the mobile node is transferred to the second access router. At said first router or said proxy node, the new care-of-address for the mobile node is determined using said information and ownership of the new care-of-address by the mobile node confirmed, and subsequently packets received at said first access network and destined for said old care-of-address are forwarded to the predicted care-of-address address. | 11-10-2011 |
20110299477 | IP Mobility Within a Communication System - A method of routing IP traffic to and from a mobile terminal able to connect to the Internet via two or more gateway nodes. The method comprises implementing a multi-addressing multi-homing protocol at each gateway node on behalf of the mobile terminal, and sharing protocol state information between gateway nodes to allow gateway nodes to update state information at the corresponding node when the mobile terminal changes gateway node. | 12-08-2011 |
20120082163 | Packet Routing In A Network - Packet routing information is encoded into a non-static compact representation of set membership, the compact representation of set membership being for inclusion into a header of a packet. The compact representation of set membership is computed using input parameters that include at least one packet-specific, flow-specific or processing-context-specific parameter. By making the compact representation of set membership packet-dependent, flow-dependent or processing-context-dependent it becomes harder for, for example, a potential attacker to obtain information needed to mount a DDoS attack. In a variant of the invention, the packet routing information is represented as a plurality of non-static identifiers for inclusion into a header of a packet. | 04-05-2012 |
20130124757 | Methods and Apparatus for Secure Routing of Data Packets - Methods and arrangements for supporting a forwarding process in routers when routing data packets through a packet-switched network, by employing hierarchical parameters in which the hops of a predetermined transmission path between a sender and a receiver are encoded. A name server generates and distributes router-associated keys to routers in the network which keys are used for computing the hierarchical parameters. | 05-16-2013 |