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1. 发明申请

WO2017210093A1 EMERGENCY CALL HANDLING WITHIN IP MULTIMEDIA SYSTEM (IMS) NETWORKS 审中-公开
标题翻译： IP多媒体系统（IMS）网络中的紧急呼叫处理
公开(公告)号：WO2017210093A1
公开(公告)日：2017-12-07
申请号：PCT/US2017/034578
申请日：2017-05-25
申请人： T-MOBILE USA, INC.
发明人： KAUL, Mayank , MUFTI, Shujaur, Rehman
IPC分类号： H04W76/00 , H04W4/22 , H04L29/06
摘要： Systems and methods are described herein for handling E911 communications within IMS networks, such as Voice over LTE (VoLTE) networks. In some embodiments, the systems and methods, via various communication nodes, handle or otherwise govern emergency calls within the VoLTE network, by sending an INVITE message from a sender node of the VoLTE network to a recipient node of the VoLTE network, and starting a retry timer at the sender node that is specific to handling E911 calls by the VoLTE network.
摘要翻译：这里描述了用于处理诸如LTE上的语音（VoLTE）网络等IMS网络内的E911通信的系统和方法。在一些实施例中，系统和方法经由各种通信节点处理或以其他方式管理VoLTE网络内的紧急呼叫，通过从VoLTE网络的发送方节点向VoLTE网络的接收方节点发送INVITE消息，重发定时器在发件人节点，专门用于处理VoLTE网络的E911呼叫。

2. 发明申请

WO2014134220A1 SYSTEMS AND METHODS FOR EMERGENCY CALL ROUTE FAILOVER 审中-公开
标题翻译：紧急呼叫路由失败的系统和方法
公开(公告)号：WO2014134220A1
公开(公告)日：2014-09-04
申请号：PCT/US2014/018797
申请日：2014-02-26
申请人： T-MOBILE USA, INC.
发明人： MUFTI, Shujaur, Rehman , HOOKER, William, Michael
IPC分类号： H04L12/24 , H04L29/06
CPC分类号： H04W24/04 , H04L65/1016 , H04L65/1046 , H04L65/1069 , H04W4/90 , H04W76/10 , H04W76/50 , H04W80/04 , H04W88/16
摘要： A system and method for performing an emergency call route failover between an Emergency Call Session Control Function (E-CSCF) and multi-homed remote end-point functions such as Border Gateway Control Function(BGCF)/Media Gateway Control Function (MGCF) or Interconnection Border Control Function (IBCF) in an Internet Protocol Multimedia Subsystem (IMS) uses Session Initiation Protocol (SIP) and/or Domain Name System (DNS) methods. The E-CSCF and/or a DNS server monitors the availability of the remote end-points to create a peer list of route options. The E-CSCF or the DNS server selects a route option from the peer list to route an emergency call to an appropriate Public Safety Answering Point (PSAP). In the event that the route option fails, the E-CSCF fails over to the next available route option to route the emergency call.
摘要翻译：一种用于在紧急呼叫会话控制功能（E-CSCF）和诸如边界网关控制功能（BGCF）/媒体网关控制功能（MGCF）等多宿主远程端点功能之间执行紧急呼叫路由故障切换的系统和方法，互联网协议多媒体子系统（IMS）中的互连边界控制功能（IBCF）使用会话发起协议（SIP）和/或域名系统（DNS）方法。 E-CSCF和/或DNS服务器监视远程端点的可用性，以创建路由选项的对等列表。 E-CSCF或DNS服务器从对等体列表中选择路由选项，将紧急呼叫路由到适当的公共安全应答点（PSAP）。如果路由选项失败，则E-CSCF故障转移到下一个可用路由选项以路由紧急呼叫。

3. 发明公开

EP2962425A1 SYSTEMS AND METHODS FOR EMERGENCY CALL ROUTE FAILOVER 有权
标题翻译：系统和方法的紧急通道回弹
公开(公告)号：EP2962425A1
公开(公告)日：2016-01-06
申请号：EP14757623.5
申请日：2014-02-26
申请人： T-Mobile USA, Inc.
发明人： MUFTI, Shujaur, Rehman , HOOKER, William, Michael
IPC分类号： H04L12/24 , H04L29/06
CPC分类号： H04W24/04 , H04L65/1016 , H04L65/1046 , H04L65/1069 , H04W4/90 , H04W76/10 , H04W76/50 , H04W80/04 , H04W88/16
摘要： A system and method for performing an emergency call route failover between an Emergency Call Session Control Function (E-CSCF) and multi-homed remote end-point functions such as Border Gateway Control Function(BGCF)/Media Gateway Control Function (MGCF) or Interconnection Border Control Function (IBCF) in an Internet Protocol Multimedia Subsystem (IMS) uses Session Initiation Protocol (SIP) and/or Domain Name System (DNS) methods. The E-CSCF and/or a DNS server monitors the availability of the remote end-points to create a peer list of route options. The E-CSCF or the DNS server selects a route option from the peer list to route an emergency call to an appropriate Public Safety Answering Point (PSAP). In the event that the route option fails, the E-CSCF fails over to the next available route option to route the emergency call.

4. 发明授权

EP2962425B1 SYSTEM AND METHOD FOR EMERGENCY CALL ROUTE FAILOVER 有权
公开(公告)号：EP2962425B1
公开(公告)日：2019-05-08
申请号：EP14757623.5
申请日：2014-02-26
申请人： T-Mobile USA, Inc.
发明人： MUFTI, Shujaur, Rehman , HOOKER, William, Michael
IPC分类号： H04L12/24 , H04L29/06 , H04W24/04 , H04W76/50 , H04W80/04 , H04W88/16 , H04W76/10 , H04W4/90

5. 发明公开

EP3466183A1 EMERGENCY CALL HANDLING WITHIN IP MULTIMEDIA SYSTEM (IMS) NETWORKS 审中-公开
公开(公告)号：EP3466183A1
公开(公告)日：2019-04-10
申请号：EP17807275.7
申请日：2017-05-25
申请人： T-Mobile USA, Inc.
发明人： KAUL, Mayank , MUFTI, Shujaur, Rehman
IPC分类号： H04W76/00 , H04W4/22 , H04L29/06

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