System for ensuring encrypted communication after handover
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United States of America Patent
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-
Jul 22, 2008
Grant Date -
May 30, 2002
app pub date -
Nov 6, 2001
filing date -
Nov 28, 2000
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
During connection setup with a first radio access network, a multimode mobile station sends an unprotected initial signaling message that includes information about those encryption algorithms that the multimode mobile station supports when it communicates in a second radio access network. The first radio access network saves some or all the information. Then it composes and sends an integrity-protected message that includes information about the encryption algorithms supported by the multimode mobile station in the second radio access network.
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