Method and nodes for handling a failure in a communications network
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United States of America Patent
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Jan 9, 2018
Grant Date -
Feb 25, 2016
app pub date -
Apr 15, 2014
filing date -
Apr 16, 2013
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Abstract
The embodiments herein relate to a method in a second CN node (205,407) for handling a failure in a communications network (200). The failure has caused communication between the second CN node (205, 407) and an old first CN node (203a) to become unavailable. The communication is associated with a session. When the failure has been detected, the second CN node transmits a session start request message to a new first CN node (203b, 405b, 410b). The session start request is a request to restore the session. The session start request message comprises a restoration flag indicating restoration of the session for a same service established before the failure and allowing a RAN node (201, 403) in the communications network (200) to accept the session start request message.
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