Patent ID: 8483179
Filing Date: 2013-07-09
Classification: G08C,H04L,H04M,H04W,Y02D

Abstract:
1. A method, comprising: receiving, in a WiMAX Signaling forwarding function (SFF) node, a preregistration request for a mobile station; in response to the preregistration request, generating a flag to indicate whether the request is being processed by the WiMAX Signaling forwarding function node; and forwarding a preattachment request from the WiMAX Signaling forwarding function node to an access gateway, wherein the preattachment request comprises the flag, wherein: the access gateway comprises a WiMAX access service network gateway (ASN-GW); and the access gateway ASN-GW receives an IM_Exit_State_Change_Rsp with R6_Attachment_Type from a preregistered ASN-GW over an R4 interface and, in response thereto, includes additional logic to invoke a Mobile IP (MIP4) or Proxy Mobile IP (PMIP6) procedures.