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imsi-pseudo
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spec: mention that this works for SIM and USIM

This commit is contained in:
Oliver Smith 2020-04-15 11:14:11 +02:00
parent 7bcddc91b6
commit 763232b34c
1 changed files with 3 additions and 2 deletions
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docs/imsi-pseudo-spec.adoc
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@ -31,8 +31,8 @@ the ME to a new pseudonymous IMSI allocated by the Home Location Register (HLR)
or Home Subscriber Service (HSS). The next pseudonymous IMSI is sent to the SIM
via Short Message Service (SMS), then a SIM applet overwrites the IMSI of the
SIM with the new value. The only component that needs to be changed in the
network besides the SIM is the HLR/HSS, therefore it should be possible even
for a Mobile Virtual Network Operator (MVNO) to deploy this privacy
network besides the SIM/USIM is the HLR/HSS, therefore it should be possible
even for a Mobile Virtual Network Operator (MVNO) to deploy this privacy
enhancement.
=== Summary of Existing Location Updating Procedures in RAN and CN
@ -170,6 +170,7 @@ pseudonymous IMSI.
=== SIM Provisioning
IMSI pseudonymization as specified by this document works with SIM and USIM.
The HLR is allocating a pseudonymous IMSI for the subscriber. This pseudonymous
IMSI is stored as IMSI on the subscriber's SIM instead of the real IMSI.