Patent ID: 7672317
Filing Date: 2010-03-02
Classification: H04L

Abstract:
1. A method, comprising: requesting, at least one service requiring access to an IP network, at an IP packet gateway communicating with the IP network via a policy control interface; analyzing, at the IP packet gateway, a message, which is received from a user equipment, in terms of requested services; checking, at the IP packet gateway, whether the requested service is authorized, said checking comprising determining, whether the requested services are to be authorized in accordance with information from said IP network; sending an error message from the IP packet gateway to the user equipment, when the requested service is not authorized, wherein at least one of the request or the error message includes at least one of policy control information and roaming information, wherein the error message contains at least one identifier of the unauthorized services, a respective set of binding information defining attributes being associated with the requested service, and a respective error code; and generating an update message, when said user equipment received an error message from the IP packet gateway, to request authorization for previously unauthorized services, wherein said update message contains an identifier of previously unauthorized services and a set of binding information defining new attributes associated with the respective requested services, wherein generating an update message further comprises checking the received error message in terms of error code and identifying a new set of binding information for previously unauthorized services based on the received error code.