Design Con 2015
Breaking News
Blog

No Kidding, 2G for E-Call

NO RATINGS
Page 1 / 2 Next >
View Comments: Oldest First | Newest First | Threaded View
<<   <   Page 4 / 4
mhrackin
User Rank
CEO
Re: 2G, 3G, LTE in-car cellular module outlook
mhrackin   7/25/2013 4:46:59 PM
NO RATINGS
"Right now any mobile phone in the US -- even without a service account -- can be used to call 911 for emergencies. Seems like automotive systems should work the same way.  Right?"

In brief, the answer is NO. There are way too many areas where the nearest cell tower isn't in the right jurisdiction, so the call will have to be transferred (maybe several times) to get to the right call center.  The delays involved are significant and unacceptable. That is why GPS location is used; the system can use that to determine EXACTLY which 911 center should get the call (it takes only milliseconds). 911 centers get that location (and all the other data from the vehicle) simultaneously with the voice call transferred to them.  It takes a "middle man" to do this.  The vehicle device is programmed to route crash calls to the middle man.

Tom Murphy
User Rank
Blogger
Re: 2G, 3G, LTE in-car cellular module outlook
Tom Murphy   7/25/2013 5:14:19 PM
NO RATINGS
Mhrackin:  Isn't that issue of the exact location a problem for wireless phones as well?   And besides, I was talking about the cost.  That shouldn't cost a nickel if the motorist isn't even subscribing to the service.

mhrackin
User Rank
CEO
Re: 2G, 3G, LTE in-car cellular module outlook
mhrackin   7/25/2013 5:33:36 PM
NO RATINGS
Re cost: it's up to the car manufacturer to determine whether or not subscription status is required.  Many provide an initial "free" trial subscription, and som extend that to unlimited only for crash calls.  Regardless, there is NO CHARGE for the cellular messages, calls, etc. The cellular account belongs to the service provider, not the car owner.


Don't forget, ALL cellphones also have to have GPS location sharing enabled for a 911 call to send that information!  It is NOT automatically enabled.  Privacy laws!  BTW, these are generally much stronger in EU than US. However, I don't think the network will use the GPS location data for voice call routing; if it does, then the celphone owner would have to have enabled sharing.

Tom Murphy
User Rank
Blogger
Re: 2G, 3G, LTE in-car cellular module outlook
Tom Murphy   7/25/2013 6:56:58 PM
NO RATINGS
Mhrackin: Right, so it shouldn't cost the car owner anything, right?

<<   <   Page 4 / 4
Flash Poll
Like Us on Facebook

Datasheets.com Parts Search

185 million searchable parts
(please enter a part number or hit search to begin)
EE Times on Twitter
EE Times Twitter Feed
Top Comments of the Week