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Abstract

The present invention provides a method and system in which the lower address bits of an IP address are used as a mobile station's short identifier. According to exemplary embodiments of the present invention, the operator of a MSC/PMSC node is normally assigned, from an ISP, several class C-networks to provide to its packet mobile subscribers. When these networks are chosen with the same high order bits, as is most often the case, it is possible to directly map the lower bits of the IP-address to a unique key value that could be used within the node. For a PPDC-node, this key value can be used as a short mobile station identifier in the LAPDm protocol. For other data-link protocols on other platforms, it is also possible to use the new key value as a short identifier for the mobile station. Therefore, the translation process turns simply into a matter of adding or removing the high order bits in order to convert the IP address into the mobile station identifier.

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First Claim