top button
Flag Notify
    Connect to us
      Facebook Login
      Site Registration Why to Join

Facebook Login
Site Registration

LTE: What is the main difference between ETWS and CMAS public warning system ?

0 votes
721 views

I was going through 36.331 specification, SIB10, SIB11 are used for ETWS and SIB12 is used for CMAS i.e Commercial Mobile Alert System. As per my understanding, both comes under the public warning system. Can anyone please explain the major differences between these two ?

posted Oct 25, 2016 by Neelam

Share this question
Facebook Share Button Twitter Share Button LinkedIn Share Button

1 Answer

0 votes

ETWS - Earth Quake and Tsunami Waring System.

CMAS - Commercial Mobile Alert System.

ETWS is broadcasted to all the devices by network provider to alert about natural Disasters. ETWS in SIB10 and SIB11 are for primary and secondary level of notifications about disasters.

CMAS is for commercial Advertising purpose. Its completely different from ETWS.

answer Oct 25, 2016 by Suchakravarthi Sripathi
The standard allows for sending two alerts. ETWS for sending fast, simple alerts and CMAS for slower more content-rich followup information. CMAS, known as Wireless Emergency Alerts (WEA) in the U.S., is used by FEMA's IPAWS system to send AMBER and other alerts. ETWS has not yet been implemented in the U.S. but is used in Japan and Europe.
Similar Questions
+1 vote

I know one MCCH channel is associated to one MBSFNArea Configuration and MBSFNAreaConfiguration carries the configuration associated to a particular MBSFNArea. I have no idea of use of SC-MCCH logical channel. Can a cell support both logical channels simultaneously ? If both can exist together in a cell then UE will choose which channel ? Can someone please share his/her thoughts over these queries ? Thanks in advance.

Contact Us
+91 9880187415
sales@queryhome.net
support@queryhome.net
#280, 3rd floor, 5th Main
6th Sector, HSR Layout
Bangalore-560102
Karnataka INDIA.
QUERY HOME
...