发明授权
- 专利标题: Geographically redundant and multiple EATF nodes
- 专利标题(中): 地理上冗余和多个EATF节点
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申请号: US14357198申请日: 2011-11-23
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公开(公告)号: US09338625B2公开(公告)日: 2016-05-10
- 发明人: Afshin Abtin , Fredrik Lindholm
- 申请人: Afshin Abtin , Fredrik Lindholm
- 申请人地址: SE Stockholm
- 专利权人: TELEFONAKTIEBOLAGET L M ERICSSON (PUBL)
- 当前专利权人: TELEFONAKTIEBOLAGET L M ERICSSON (PUBL)
- 当前专利权人地址: SE Stockholm
- 代理机构: Nicholson De Vos Webster & Elliott LLP
- 国际申请: PCT/EP2011/070874 WO 20111123
- 国际公布: WO2013/075746 WO 20130530
- 主分类号: H04M11/04
- IPC分类号: H04M11/04 ; H04W4/22 ; H04W76/00 ; H04L29/06 ; H04W24/04 ; H04W36/00 ; H04W64/00 ; H04W88/10
摘要:
An emergency access transfer function (EATF) node is described for use when hand over of a user equipment (UE) from a first to a second access network is performed during an emergency call session (ECS). The EATF node receives a request for transferring the ECS from the first access network to the second access network. The EATF node transfers the ECS of the UE from the first to the second access network when the ECS is known to the EATF node. The EATF node selects a second EATF node from a set of one or more EATF nodes when the ECS is unknown, and forwards the request for transferring the ECS to the second EATF node. The EATF node may be in a first network region and the second EATF node may be in the first or a second network region.
公开/授权文献
- US20140370842A1 GEOGRAPHICALLY REDUNDANT AND MULTIPLE EATF NODES 公开/授权日:2014-12-18
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