发明名称 |
Integrated services user part (ISUP)/ session initiation protocol (SIP) gateway for unlicensed mobile access (UMA) emergency services call flow |
摘要 |
An ISUP/SIP gateway is implemented to encapsulate SS7 location requests from a switched telephone network into an Internet protocol SIP message including one or more location objects. The ISUP/SIP gateway is implemented between a mobile switching center (MSC) and a VoIP positioning center (VPC) to provide support of unlicensed mobile access (UMA) voice over Internet Protocol (VoIP) call routing, e.g., for E9-1-1, 4-1-1, 2-1-1, etc. The disclosed location objects that are encapsulated into a SIP message includes calling party number, called party number, CGI, International Mobile Subscriber Identity (IMSI), mobility indicator, and/or access point MAC address. At the SIP/ISUP gateway, SS7 integrated services user part (ISUP) location request messages are encapsulated within SIP. The SIP encapsulated location request message is then routed over the Internet to a destination VoIP positioning center (VPC). |
申请公布号 |
US8954029(B2) |
申请公布日期 |
2015.02.10 |
申请号 |
US201313942029 |
申请日期 |
2013.07.15 |
申请人 |
TeleCommunication Systems, Inc. |
发明人 |
Mitchell Don |
分类号 |
H04M11/04;H04W4/02;G01S5/00;H04L29/06;H04M3/42;H04M7/12;H04W4/22;H04W64/00;H04W76/00;H04W80/02;H04W88/16 |
主分类号 |
H04M11/04 |
代理机构 |
|
代理人 |
Bollman William H. |
主权项 |
1. A SIP gateway, comprising:
a receiver to receive a location-based request message including a calling party ID, said location request message having been initiated via a non-SIP network element; a SIP encapsulation module to encapsulate said location-based request message within a SIP message; a transmitter to transmit said SIP message including said calling party ID to a positioning center; a SIP message receiver module to receive another SIP message including location-based information, back from said positioning center; and an initial message transmitter module to transmit an initial message including said location-based information back to said non-SIP network element. |
地址 |
Annapolis MD US |