Telefonaktiebolaget Lm Ericsson (publ)

Staffan Winell

Niklas Lundin

Staffan Bonnier

Anders Ahlen

A method in a server for controlling the distribution of messages from a plurality of clients among a plurality of processing means, including the steps of: establishing whether a message received on an interface board of the server is addressed using a normal identity specific for the client that sent the message and, if yes, then: using a first algorithm to map the normal identity to a load index in a first mapping means; and, mapping the load index to one of the plurality of processing means using a mapping table provided in the interface board. If the message is addressed using an internal identity generated in the server, rather than the normal identity specific for the client that sent the message, then: using a second algorithm to map the internal identity to a load index in a second mapping means; and, mapping the load index to one of the plurality of processing means using the mapping table provided in the interface board.

Arrangement and method relating to load distribution

The present invention relates to an arrangement comprising a functional server node forming part of a conglomerate, or pool, of functional server nodes in common controlling a number of radio network control means, each functional server node being able to control any, or a number of, radio network control means, to which mobile stations are connected. The functional server nodes support transfer/redistribution of mobile stations between each other without interrupting the connection of the mobile stations, a target functional server node, to which it has been decided that a mobile station is to be transferred from a current functional server node, generates an area update or transfer acceptance message comprising an identification of the current functional server node, an identification of the target functional server node and a transfer indications. The invention also relates to a method of redistributing or transferring mobile station contexts.

Arrangement and a method in communication networks

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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Askim, Sweden

Staffan Winell