What is CMAS LTE?
CMAS stands for Commercial Mobile Alert System. It is equivalent to CBS(Cell Broadcasting Service) in 2G and 3G. At high level view, CMAS, ETWS, CBS belongs to a system called PWS (Public Warning System). In LTE, there are three main components getting involved in sending CMAS as follows.
How do I get a tsunami warning on my phone?
CWarn. CWarn.org is a global tsunami warning and alert system. Registration and membership is totally FREE. CWarn monitors global earthquake activity and alerts registered members, via an SMS text message on their mobile phones, should a tsunami threaten their particular location.
Is there an earthquake warning system like a tsunami warning system?
Two separate phone apps — Myshake, from the University of California, Berkeley, and QuakeAlertUSA — also warn users of tremors. In 2019, shortly after California tested the first statewide quake warning system, a magnitude 4.5 quake and a 4.7 quake hit the San Francisco Bay Area and central California.
What is Etws in Mobile?
ETWS stands for “Earthquake and Tsunami Warning System”. The warning notification usually comes from local governments to mobile operators, and this messenger is called as CME (Cell Broadcast Entity).
What is LTE SIB?
As the functionalities of LTE evolves and start interplay with other radio technologies (e.g, wlan, V2X, NR etc), the list of SIB is getting longer and longer.
What is paging in LTE?
Paging in LTE network is used to inform and notify UE about various events. The propose of paging procedure is: To inform UEs in RRC_IDLE and UEs in RRC_CONNECTED state about a system information change. To inform UE about ETWS primary notification and ETWS secondary notification.
Is there a tsunami app?
Tsunami Alert is an Android application that will alert you when a potentially dangerous tsunami has occurred. With real-time data from NOAA’s Tsunami Warning Centers, get alerts for the United States, Canada, and all countries along the Pacific Ocean, Indian Ocean, and Caribbean Sea.
Who is under a tsunami warning?
The USA (PTWC, US NTWC), Japan, and China are the Tsunami Service Providers. PTWC issues warnings for the US state of Hawaii, territories of American Samoa and Guam, commonwealth of the Northern Mariana Islands, the territory of the US Virgin Islands, the commonwealth of Puerto Rico, and the British Virgin Islands.
Is there an earthquake warning system?
ShakeAlert is a new ANSS tool in the USGS risk reduction toolbox. The ShakeAlert earthquake early warning system can save lives and reduce injuries by giving people time to take protective actions like drop, cover and hold on before potentially dangerous earthquake shaking arrives at their location.
What is the tsunami warning system called?
These instruments are called DART buoys, which stands for “Deep-ocean Assessment and Reporting of Tsunamis.” The deep-sea gauges send information from a surface buoy through satellites to the warning centers.
What is CBE in 5G?
CBE (Cell Broadcast Entity) – this is where the Cell Broadcast message originates, dictating the message text, its destination, and the message scheduling. The RAN controller distributes the cell broadcast message to the target cells. BSC, RNC, MME and AMF are the RAN Controllers for 2G, 3G, 4G and 5G, respectively.
What is Etws in 5G?
Earthquake and Tsunami Warning System (ETWS) is a public warning system developed to meet the regulatory requirements for warning notifications related to earthquake and/or tsunami events.
What do you mean by earthquake and tsunami warning system?
ETWS (Earthquake and Tsunami Warning System) ETWS is a kind of public warning system (PWS) to notify all the UEs in a specific area of emergency situation like Earthquake or Tsunami. The concept is very similar to Cell Broadcasting in WCDMA and GSM network.
Which is message flow for LTE etws from NTT DoCoMo?
Overall message flow for LTE ETWS from NTT DoCoMo Technology Report is as follows. Following is Paging, SIB10, SIB11 showing the field (IEs) related to ETWS. (For the details of ETWS, refer to 3GPP TS23.828 and TS22.268 and TS 36.523 section14 ETWS)
Which is the common traffic channel in LTE?
In WCDMA, we used a special channel called CTCH (Common Traffic Channel) for this purpose, but in LTE we use a couple of SIB messages to periodically broadcast the warning information to all the UEs in a certain area simultaneouly. (I personally prefer this method than using CTCH).