Revision a0354de4
Added by osmith about 4 years ago
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[[sms-structure]] |
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==== Next Pseudonymous IMSI SMS Structure |
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// FIXME |
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IMPORTANT: This is a draft. The structure is likely to change after the |
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reference implementation phase. |
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.Next pseudonymous IMSI SMS structure |
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[packetdiag] |
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---- |
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} |
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---- |
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// FIXME |
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IMPORTANT: This is a draft. The structure is likely to change after the |
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reference implementation phase. |
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IMSI_PSEUDO_I: 32 bits:: |
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See <<hlr-imsi-pseudo-i>>. |
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=== User-configurable Minimum Duration Between IMSI Changes |
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It may be desirable to let subscribers configure their minimum duration between |
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IMSI changes. This allows subscribers with a high privacy requirement to switch |
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their pseudonymous IMSI more often, and it allows the pseudonymous IMSI change |
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to happen less frequently if it is distracting to the subscriber. |
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How distracting the pseudonymous IMSI change is, depends on the ME. The |
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following examples were observed: |
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// FIXME: might need an update after SYS#4481 |
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* A Samsung GT-I9100 Galaxy SII smartphone with Android 4.0.3 displays a |
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message at the bottom of the screen for about 5 seconds, but the user |
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interface remains usable. |
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* A Samsung GT-E1200 feature phone displays a waiting screen for 16 to 17 |
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seconds and is unusable during that time. |
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<<< |
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include::./common/chapters/gfdl.adoc[] |
Also available in: Unified diff
spec: User-configurable Minimum Duration Between IMSI Changes