Being aware of a loss of signalling bearer transport through an IP Connectivity Access
Network is an important issue. Therefore, the present invention relies on amending the …

Being aware of a loss of signalling bearer transport through an IP Connectivity Access
Network is an important issue. Therefore, the present invention relies on amending the …

Method to protect against manipulated charging signaling data in IMS networks In the prior
art CDR tickets are exchanged between devices/functionalities of an IMS system. This can …

the PCC architecture includes, amongst other entities, a Policy and Charging Control Rules
Function (hereinafter PCRF) in charge of policy control decision and flow based charging …

Primary Examiner–Thai D Hoang (74) Attorney, Agent, or Firm—Perkins Coie LLP (57)
ABSTRACT Managing Security Parameter Information (SPIs) to prevent race condition …

The present invention discloses a method for selecting a policy and charging rules function
server in a non-roaming scenario to achieve that the PCC policies for each IP-CAN session …

BACKGROUND 0002 This section introduces aspects that may be helpful in facilitating a
better understanding of the inventions. Accordingly, the statements of this section are to be …

0002. In current and future communication networks and systems, policy control is an
essential feature. In general, policy control is a known process in communication networks …

According to the present invention there is provided a method of ensuring that all AF
sessions for an IP-CAN session reach the same PCRF when more than one PCRF is …

(57) ABSTRACT A method is described that involves sending a positive imposter response
as a consequence of a status request message having been received. The status request …