发明授权
US08224290B2 Apparatus and method of ciphering in wireless communications user equipment operative with a plurality of radio access networks
有权
在与多个无线电接入网络一起操作的无线通信用户设备中加密的装置和方法
- 专利标题： Apparatus and method of ciphering in wireless communications user equipment operative with a plurality of radio access networks
- 专利标题（中）： 在与多个无线电接入网络一起操作的无线通信用户设备中加密的装置和方法
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申请号： US12179728申请日： 2008-07-25
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公开(公告)号： US08224290B2公开(公告)日： 2012-07-17
- 发明人: Giri Narayana Reddy , Andrew Farnsworth
- 申请人： Giri Narayana Reddy , Andrew Farnsworth
- 申请人地址： CA Waterloo
- 专利权人： Research In Motion Limited
- 当前专利权人： Research In Motion Limited
- 当前专利权人地址： CA Waterloo
- 代理机构： Novak Druce + Quigg LLP
- 主分类号： H04M1/66
- IPC分类号： H04M1/66 ; H04M1/68
摘要：
A method in a wireless telecommunications device operative with a plurality of radio access networks, the method comprising: when operating with a first radio access network reading at least one ciphering variable applicable in the second radio access network (e.g. in UMTS reading the value of a variable START from the USIM of the device). When at least one ciphering variable applicable in the second radio access network renders ciphering in the second radio access network infeasible without further authentication (e.g. in UMTS when the value of START in USIM is equal to a value THRESHOLD), using a substitute value for the ciphering parameter (e.g. START) when establishing a connection with the second radio access network.
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