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spec: use 2g example throughout the document

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Oliver Smith 2020-04-06 14:29:34 +02:00
parent 2c8a19c1ed
commit 6f9f2186c1
1 changed files with 13 additions and 9 deletions
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docs/imsi-pseudo-spec.adoc
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@ -26,14 +26,14 @@ enhancement.
== Summary of Existing Location Updating Procedures in RAN and CN
The SIM is provisioned with the IMSI (3GPP TS 23.008 section 2.1.9) and
cryptographic keys, that it uses to authenticate with the network. In the
Remote Access Network (RAN), the IMSI is sent over the air interface and then
transmitted to the Core Network (CN), where it is validated by the HLR/HSS.
The involved components vary by the generation of the network and whether the
SIM is attempting a Circuit Switched (CS) or Packet Switched (PS) connection.
But the principle is the same and looks like <<figure-imsi-regular>> for 2G CS
Location Updating with IMSI.
The subscriber's SIM is provisioned with the IMSI and cryptographic keys of a
subscriber, after the subscriber was added with the same data to the HLR/HSS.
In the Remote Access Network (RAN), the IMSI is sent over the air interface and
then transmitted to the Core Network (CN), where it is validated by the
HLR/HSS. The involved components vary by the generation of the network and
whether the SIM is attempting a Circuit Switched (CS) or Packet Switched (PS)
connection, but the principle is the same. This document uses 2G CS Location
Updating for reference, as in <<figure-imsi-regular>>.
The IMSI is transmitted in the Location Updating Request from ME. The VLR
needs an authentication challenge specific to the secret keys on the SIM to
@ -108,9 +108,13 @@ msc {
}
----
== Required Changes
=== SIM Provisioning
=== Successful Location Update With Pseudonymous IMSI
=== Next Pseudonymous IMSI Arrives Via SMS