Patent ID: 7746880

Claim:
An arrangement for handling control signal messaging in a distributed system having a number of sending nodes and a number of receiving nodes for implementing a control signalling communication protocol, wherein at least a number of said sending and/or receiving nodes comprise: a message compression selection means for, based on one or more criteria, determining or selecting which messages are to be compressed; a message compression means for compressing selected messages, said message compression means being adapted to use the syntax of the control signalling for compression; a unique identity assigning means for at least assigning messages which are to be compressed with a unique identity; a message information storing means, in which at least some messages are sorted depending on type, under the assigned unique identity; message recognition means for recognizing previous messages of the same type; and a message distinguishing means for establishing the difference portion(s) between one or more previous message and a current message of the same type, and in that the sending and/or the receiving node is adapted to send and/or receive the current message as a compressed message comprising only the difference portion between a selected or preferred previous message and the current message and the unique identity of said selected or preferred previous message.