The cell broadcast center testbed is a complete network bundle that allows testing the transmission of messages to mobile phones using a real LTE network.
It includes the LTE LabKit (eNodeB0 and the MiniCore (Core Network). It is fully configured and intended for use as a CBC testbed and learning environment according to ETSI Rel. 15.
Companies and governments that use Cell Broadcasting can easily mass-deliver text or binary messages to citizens or a targeted group of people that is location-based.
Although this is a flexible way to send out emergency alerts, it does come with its challenges.
If the proper test is not done, CBC companies might miss a special mission in which the Cell broadcast does not work. This can be catastrophic as lives could be lost, properties could be lost, reputations of institutions could be at stake, institutions could enter into jeopardy, and there could be serious human and political implications.
There is no better benefit than the ability to test emergency broadcast without delivering an actual emergency broadcast to the general public. CBC companies can run a small and limited test in a laboratory of emergency broadcast and have the full functionality of a real core network equipment without facing the danger of accidental release of a broadcast message to a region or the general public.
CBC testbed is built following the procedures described in 3GPP TS29.168 (SBc-AP standard) version 15.5.0, section 22.214.171.124 Warning Message Delivery Procedure in E-UTRAN.
The Cell broadcast center testbed MME can be connected to multiple CBCs. The CBC establishes the SCTP association.
If neither the List of TAIs IE, nor the Global eNB ID IE (if this is supported) are present in WRITE-REPLACE WARNING REQUEST message, the MME is forwarding the message towards all connected eNBs.