Telefonaktiebolaget Lm Ericsson (publ)

Gonzalo Camarillo

Elena Fersman

Ioannis Fikouras

Roman Levenshteyn

Salvatore Loreto

Michael Jansson

Goran Anders Petter Eriksson

Pekka Nikander

Keijo Tapio Laiho

Miguel-Angel Garcia-Martin

Sébastien Pierrel

Michael Åström

Janne K Suotula

Göran Anders Petter Eriksson

Nils Karlsson

Goran Anders Eriksson

A system and method for correlating communication sessions. A globally unique correlation identifier is created and exchanged between the parties during Session Initiation Protocol (SIP) session setup to allow for association and correlation of additional SIP sessions between the same parties or with additional parties. The correlation information may then be used by network and session entities to perform different services.

System and method for communication session correlation

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.

IP address delegation

An arrangement and method in a communication system such as an Orthogonal Frequency Division Multiplexing (OFDM) radio receiver for reducing the impact of interference from an intermittent interfering signal transmitted by an interfering system which may be co-located with the OFDM system or may be remotely located. Each OFDM symbol in a received OFDM signal includes a guard interval (GI), a middle portion, and a last portion identical to the GI. The arrangement determines which portion of each OFDM symbol is contemporaneous with the interfering signal and time-shifts a fast Fourier transform (FFT) window in the OFDM receiver to minimize or eliminate FFT processing of samples of the OFDM symbol that are contemporaneous with the interfering signal, thereby minimizing the impact of the interfering signal.

Methods of establishing an IP link between first and second applications running at respective first and second nodes are provided. The first and second applications are arranged to initiate link establishment over a transport layer by issuing a call to their respective operating system socket Application Programming Interfaces. The methods include at said first node, intercepting a socket call generated by said first application and redirecting the socket call to a SIP-based application resident at said first node; and initiating an IP session with said second node using the SIP protocol.

IP link establishment across a data network

A system and method for correlating communication sessions. A globally unique correlation identifier is created and exchanged between the parties during SIP session setup to allow for association and correlation of additional SIP sessions. The correlation information may then be used by network and session entities to perform different services.

A method of setting up a call between first and second nodes of a communication system when the call extends across a circuit switched access network and a packet switched backbone network interconnected by a Media Gateway. A control node obtains from a Home Subscriber Server, the identity of a Media Gateway Control Function controlling that Media Gateway which will terminate the call within the circuit switched access network. The first node calls an access number notified to it by the Media Gateway Control Function, and as part of the call setup procedure, the identity of the Media Gateway selected to terminate the call is communicated to the second node.

Growing community of inventors

Helsinki, Finland

Gonzalo Camarillo