Nokia Corporation

Core Wireless Licensing S.a.r.l.

Conversant Wireless Licensing S.a R.l.

Atte Länsisalmi

Khiem Le

Juha Kalliokulju

Yousuf Saifullah

Gabor Bajko

Valtteri Niemi

Markus Isomäki

Shavantha Kularatna

Jose Costa-Requena

Aki Niemi

Tao Haukka

András Kovács

Gabriel Ramos

Pekka Korja

Sanna Mäenpää

Raquel Sanchez

Syed Hossain

Tommi Viitanen

A method of relocating the header compression context in a packet network which transmits packets having compressed headers. A connection is established between a mobile terminal and a first network entity and context information used with compression and decompression of the headers of the packets is stored at the mobile terminal and the first network entity. The context information updating is stopped in the mobile terminal and in the first network entity and after that, a snapshot of the compression and decompression context information is taken and stored in the first network entity. The connection between the first network entity and the mobile terminal is changed to a connection between the mobile terminal and a second network entity. The context information snapshot stored by the first network entity is transferred to the second network entity to be stored therein as the context information of the second network entity. The stored context information at the mobile terminal and the second network entity is then used for compression and decompression of the headers of the packets.

Relocating context information in header compression

The present invention relates to a relocation method, system and network element for changing a serving radio resource control entity After an initial operating state in which a user equipment () has radio links with a serving network element () and a drift network element () supporting said serving network element () with a wireless connection, the serving network element () transmits a relocation-specific information to a target network element (). Based on the relocation-specific information, the target network element () establishes a link to the drift network element (), such that the drift network element () can receive user traffic from both the serving network element () and the target network element (). Then, the radio resource control is relocated to the target network element (). The relocation-specific information may comprise an identifier or a list of identifiers of drift network elements. Thus, existing soft handover techniques can be enhanced by allowing a user plane connection to be maintained with drift network elements. Thereby, any amount of drift network elements can be kept, with improved radio performance as a consequence.

Relocation method, system and network element

The present invention is a system and method which provides authentication for data services for at least one UE () using common authentication information based upon information stored in a HSS () of a home network () of the at least one UE for multiple protocols. At least one proxy server () stores authentication information for each of the protocols which may be used to provide data services to the at least one UE. Authentication of the protocols available to the least one UE uses the authentication information stored at the at least one proxy server obtained from the protocol used in the home network of the at least one UE.

Authentication and protection for IP application protocols based on 3GPP IMS procedures

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Espoo, Finland

Atte Länsisalmi