发明名称 |
Subscriber identity module verification during power management |
摘要 |
Power management techniques for a Subscriber Identity Module (SIM) of a wireless communication device (WCD) are described tat make use of a unique identifier for the SIM. In particu1ar a processor within the WCD reads a first unique identifier from the SIM when power is initially supplied to the WCD, and stores the first unique identifier within a computer-readable medium within the WCD. During a power management cycle, where power is terminated and then re-supplied to the SIM, the processor again receives a unique identifier from the SIM and compares the second unique identifier with the stored unique identifier. These tecbniques are useful in detecting whether the attached SIM has been exchanged for a different SIM while powered down during a power management cycle.
|
申请公布号 |
US7137003(B2) |
申请公布日期 |
2006.11.14 |
申请号 |
US20010881868 |
申请日期 |
2001.06.15 |
申请人 |
QUALCOMM INCORPORATED |
发明人 |
KRISHNAN CHIDAMBARAM;HUTCHISON, IV JAMES A.;SUMMERS TOM |
分类号 |
H04L9/00;G06F1/26;G06F1/32;G06F7/04;H04M1/66;H04W88/02 |
主分类号 |
H04L9/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|