GEOGRAPHICALLY REDUNDANT AND MULTIPLE EATF NODES,申请号EP20110790595-传众专利搜索

GEOGRAPHICALLY REDUNDANT AND MULTIPLE EATF NODES

申请公布号：EP2783494(A1)

申请号：EP20110790595

申请日期：2011.11.23

申请公布日期：2014.10.01

申请人：

TELEFONAKTIEBOLAGET L M ERICSSON (PUBL)

发明人：ABTIN, AFSHIN;LINDHOLM, FREDRIK

分类号：H04L29/06;H04W4/22

主分类号：H04L29/06

摘要：<p>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.</p>