Patent ID: 7656835

Claim:
A method for informing changed communications properties in a communications system, the method comprising: detecting a need to change link layer communication to use a second link layer configuration for a handover of a mobile node from a first link layer configuration to the second link layer configuration, the mobile node communicating by IP (Internet Protocol) with a correspondent node and utilizing the first link layer configuration, the correspondent node serving as an adaptor of layer settings, defining property information indicating at least one link layer property applied or to be applied in communication utilizing the second link layer configuration, transmitting the property information to the correspondent node to enable transference of the link layer property information directly after the detection or later after the communication is changed to the second link layer configuration, wherein the property information is transmitted to the correspondent node in a binding update message or in a Care of Test Init message, receiving the property information by the correspondent node, and adapting, in the correspondent node, at least one setting for communication between the correspondent node and the mobile node on the basis of the received property information, wherein the property definition and the transmission of the property information to the correspondent node are arranged before the change to the second link layer configuration.