dgsm Proxy Cache design WIP
Change-Id: Ifa322e84fadd3b04943c8c7024c0e2de4935bed0
diff --git a/doc/manuals/chapters/proxy_cache_periodic_lu.msc b/doc/manuals/chapters/proxy_cache_periodic_lu.msc
new file mode 100644
index 0000000..b18a43a
--- /dev/null
+++ b/doc/manuals/chapters/proxy_cache_periodic_lu.msc
@@ -0,0 +1,43 @@
+msc {
+ hscale="2";
+ ms[label="MS,BSS"],__msc[label="MSC"],hlr[label="HLR proxy"],home[label="Home HLR"];
+
+ ms => __msc [label="Location Updating Request (Periodic)"];
+ ms rbox __msc [label="Authentication,\nusing the next of 5 auth tuples the MSC has stored"];
+ __msc => hlr [label="Update Location Request"];
+ hlr rbox hlr [label="Use already set up proxy path"];
+ hlr abox hlr [label="(8) proxy cache already has all information to answer"];
+ __msc <= hlr [label="Insert Subscriber Data Request"];
+ __msc => hlr [label="Insert Subscriber Data Result"];
+ __msc <= hlr [label="Update Location Result"];
+ ms <= __msc [label="Location Updating Accept"];
+ hlr rbox hlr [label="(9) Verify Update Location with home HLR"];
+ |||;
+ --- [label="if the home HLR has no changes and accepts"];
+ hlr => home [label="Update Location Request"];
+ hlr <= home [label="Insert Subscriber Data Request"];
+ hlr => home [label="Insert Subscriber Data Result"];
+ hlr abox hlr [label="Notice identical MSISDN"];
+ hlr <= home [label="Update Location Result"];
+ |||;
+ --- [label="if the home HLR is unreachable"];
+ hlr => home [label="Update Location Request"];
+ hlr abox hlr [label="no link\nor\nresponse timeout"];
+ hlr rbox hlr [label="Don't care, carry on"];
+ |||;
+ --- [label="if the home HLR has a modified MSISDN, and accepts"];
+ hlr => home [label="Update Location Request"];
+ hlr <= home [label="Insert Subscriber Data Request"];
+ hlr => home [label="Insert Subscriber Data Result"];
+ hlr abox hlr [label="Notice changed MSISDN"];
+ __msc <= hlr [label="Insert Subscriber Data Request"];
+ __msc => hlr [label="Insert Subscriber Data Result"];
+ hlr <= home [label="Update Location Result"];
+ |||;
+ --- [label="if the home HLR rejects"];
+ hlr => home [label="Update Location Request"];
+ hlr <= home [label="Update Location Error"];
+ __msc <= hlr [label="Cancel Location Request"];
+ __msc => hlr [label="Cancel Location Result"];
+ hlr rbox hlr [label="Clear subscriber cache"];
+}