NETWORK SUPPORT FOR NON-COMPLIANT MOBILE TERMINALS AND CORE NETWORK NODES

摘要

A system, node, and method in a radio telecommunication network for efficiently serving non-compliant mobile terminals, UE/MSs, and core network (CN) nodes without negatively affecting features available to compliant UE/MSs and nodes. A network service node such as an SGSN (41) sends a standardized message (44, 53) to a UE/MS (42) or CN node (51) a reduced number of times while awaiting a response. If a proper response is not received, the SGSN removes "known problem" optional and/or conditional information elements (55) from the message and sends an altered message (46, 56) to the UE/MS or CN node one or more times while awaiting a response. If the UE/MS or CN node responds to the altered message, it receives service with a reduced feature set. The SGSN (41 ) may store an ID of the UE/MS or CN node in a list (47) of non-compliant UE/MSs or CN nodes. In future sessions, the SGSN may send only the altered message to the UE/MS or CN node.