OsmoCBC » History » Revision 4
Revision 3 (laforge, 09/13/2019 08:44 PM) → Revision 4/13 (laforge, 09/13/2019 08:44 PM)
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h1. OsmoCBC
This is the upcoming Osmocom Cell Broadcast Centre. Work has just started, stay tuned.
h2. Introduction
You can find more information about Cell Broadcast in general at [[cellular-infrastructure:Cell_Broadcast]] and [[cellular-infrastructure:Service_Area_Broadcast]], as well as [[cellular-infrastructure:Emergency_Warning]] and [[cellular-infrastructure:Public_Warning_System]]. The pages include pointers to the relevant specifications.
h2. Position in the network
The below graph shows the CBC in the network.
{{graphviz_link()
digraph G {
rankdir = RL;
CBC [color=red];
CBE -> CBC [label="REST/JSON"];
CBC -> BSC [label="CBSP"];
CBC -> RNC [label="SABP"];
CBC -> MME [label="SBc-AP"];
BSC -> BTS [label="A-bis RSL"];
RNC -> NodeB [label="Iub"];
MME -> eNodeB [label="S1-AP"];
BTS -> UE [label="CBCH"];
NodeB -> UE [label="BMC/CTCH"];
eNodeB -> UE [label="SIB10/11/12"];
}
}}
As can be seen, the CBC receives messages from third-party applications (called CBEs). It then routes/distributes/forwards those messages over the respective radio access technology specific method.