METHODS AND SYSTEMS FOR HANDOVER OF AN EMERGENCY CALL BETWEEN DIFFERENT WIRELESS NETWORKS
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United States of America Patent
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app pub date -
Jun 13, 2017
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Jun 15, 2016
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Abstract
A method is provided to enable handoff of an emergency services call between different network operators. A UE may establish a first call with a first network for a first network operator based on a first wireless access type, where the first call is an emergency services call to a PSAP. The UE may then determine impaired wireless coverage for the first wireless access type and unimpaired wireless coverage for a second wireless access type for a second network, where the second network is for a second network operator different to the first network operator. The UE may then establish a second call with the second network based on the second wireless access type, where the second call is a continuation of the first call to the PSAP. In embodiments, the first wireless access type is WiFi and the second wireless access type is cellular.
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