Nokia Corporation

Magdolna Gerendai

Mihaly Toth

Tamas Szabo

Szabolcs Payrits

Tam&aacute;s Szab&oacute;

Mih&aacute;ly T&oacute;th

A method and system for large data transfer between a sender and a receiver. The sender transmits to the receiver a plurality of data packets in sequence. The time elapsed for each of the plurality of data packets after transmission of said each of the plurality of data packets is determined. The receiver transmits a message from the receiver to the sender notifying the sender that an identified one of the plurality of the data packets is missing. The sender retransmits to the receiver the identified one of the plurality of data packets only when the elapsed time determined for the identified one of the plurality of the data packets is greater than a predetermined time interval.

Data transmission

The invention relates to a method of carrying out a transaction involving transmission of data over a link between and a mobile terminal and a gateway. The data is in the form of a plurality of data messages wherein each message comprises at least one data packet. The number of messages is not predetermined. The method comprising the steps of: the mobile terminal acknowledging receipt of data packets so as to provide a reliable connection; the gateway notifying the receiver of the last data packet in each data message; and the sender notifying the receiver of the last data message. The invention is particularly applicable to transactions carried out according to the Wireless Transaction Protocol.

A method for communicating a message directed to or concerning a user (in which case the message may be a core service request), from a source entity () in a source system to a target entity () in a target system, the user having a first user identifier known to the source entity (), and a second user identifier used by the target entity () to identify the user in the target system, with the second user identifier not known to the source entity (), the method including: a step () in which the source entity () encapsulates the message in a first message envelope containing an element () including the first user identifier and an element () containing a user identifier placeholder, and also a link (L) relating the first user identifier and the user identifier placeholder.

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Budapest, Hungary

Magdolna Gerendai