METHOD AND SYSTEM FOR CONTROLLING TRAFFIC LOAD BETWEEN MEDIA GATEWAY CONTROLLERS AND PROXIES

摘要

The invention refers a method of regelating the traffic that may be used between a SIP User Agent (SIP-UA) and a SIP Proxy in high traffic load situations, like in a telephony-SIP inter-working scenario where the MGC in the inter-working gateway is acting as a SIP-UA. Thus, a method to fit the traffic between these two nodes into some margins which suit both node capabilities. The method comprises two procedures. The first procedure proposes a mechanism for any of both nodes, so called requesting node, to indicate the opposite node to act upon its traffic towards the requesting node. The reference for such decision is the current traffic being received at the requesting node at that very same moment. Any further traffic regulation indication will be related to the corresponding traffic level at the moment every new indication is issued, not necessarily being related to the traffic level being handled as previous indications were sent. This first procedure is the basic flow control protection between both nodes. The second procedure adds some fine controls to the first procedure. It allows both nodes to explicitly exchange capability values that will be used from that point on as a reference for any indication to act upon the traffic among both nodes. So, this second procedure provides a more permanent reference for any successive traffic regulation indication. The first procedure allows both nodes to control the traffic between them without knowing anything about each other's capabilities.