DATA COMMUNICATION METHOD BETWEEN A ROAMING RADIO EQUIPMENT ITEM AND A NETWORK ACCESS GATEWAY

摘要

A data communication method between a mobile radio communications equipment and a gateway connected to a network, the data being organized in the form of packets comprising at least one first internal header and a second external header, comprises: an initial information exchange phase comprising: transmission by the radio communications equipment to the gateway of at least one predictable field out of the fields of the external and internal headers, reception by the radio communications equipment from the gateway of at least one predictable field of the external header, a phase of transmission of at least one data packet comprising: the deletion of the external and internal headers of at least one data packet, the generation, in at least one data packet, of a header of level lower than a network layer comprising at least one non-predictable field of the internal header, the transmission of at least one data packet.

主权项

1. A data communication method between a radio communications equipment item intended to be embedded in a roaming carrier, and a gateway connected to a network, the data being organized in the form of packets comprising at least one first network header, called internal header, corresponding to a network link between a local communications equipment item belonging to a local area network embedded onboard said carrier and a remote communications equipment item connected to said network and a second network header, called external header, corresponding to a network link between said radio communications equipment item and a home agent connected to the gateway, said method comprising at least:
an initial information exchange phase comprising:
the transmission by the radio communications equipment item to the gateway or the reception by the gateway from the radio communications equipment item of at least one predictable field out of the fields of the external header and of the internal header,the reception by the radio communications equipment item from the gateway or the transmission by the gateway to the radio communications equipment item of at least one predictable field of the external header, a phase of transmission of at least one data packet comprising:
the deletion of the external header and of the internal header of said at least one data packet,the generation, in said at least one data packet, of a header of level lower than a network layer comprising at least one non-predictable field out of the fields of the internal header,the transmission of said at least one data packet.