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Huge map file.....
- Thread starter brkwtz
- Start date
analRaviOli
Member
Interesting as i have not seen this for my car. Can you tell us what model you're driving? I will check and see if i have gotten any downloads from my home router logs.
It completed overnight and now my mapfile is NA-2019.20-10487. For reference i have a refreshed 2016 with AP 1.
analRaviOli
Member
Thanks! I will check when i leave the office and compare mine with yours. I am Pre AP so i am on 28.2. Not sure if that is dependent on SW release.
Tesla appears to be using an obsolete model for keeping the onboard map file up-to-date.
Vehicle navigation systems that are not connected to the internet are typically updated annually with new maps - transferring the updated maps from optical disk, external drive or another computer - updating the entire database for large regions (such as all of North America). Even though Tesla vehicles are continuously connected via the internet, Tesla still uses the same model - periodically updating the entire map data base.
For 99.9999% of all vehicles, only an extremely small portion of that map database will ever be used - the area with a 200-250 mile radius of where they live, and the area along routes for any road trips they take. Almost all of the map data will never be used.
Tesla could do this much more efficiently - and keep the onboard map databases up-to-date by sending much more frequent updates to all vehicles, based on their current location - such as sending map updates for areas within a 200-250 radius of the current location, and updating only those map segments that have changed. And then when the vehicle started moving or routing outside of this area, Tesla could send updates for the new area (which would be a relatively small amount of data - likely less than several screens of satellite images).
Frequent incremental updating of the map data base would allow Tesla to reduce the bandwidth needed for map updates, and keep all vehicles up-to-date within days of any changes made to map data (vs. the 1-2 year delay we have been seeing).
Vehicle navigation systems that are not connected to the internet are typically updated annually with new maps - transferring the updated maps from optical disk, external drive or another computer - updating the entire database for large regions (such as all of North America). Even though Tesla vehicles are continuously connected via the internet, Tesla still uses the same model - periodically updating the entire map data base.
For 99.9999% of all vehicles, only an extremely small portion of that map database will ever be used - the area with a 200-250 mile radius of where they live, and the area along routes for any road trips they take. Almost all of the map data will never be used.
Tesla could do this much more efficiently - and keep the onboard map databases up-to-date by sending much more frequent updates to all vehicles, based on their current location - such as sending map updates for areas within a 200-250 radius of the current location, and updating only those map segments that have changed. And then when the vehicle started moving or routing outside of this area, Tesla could send updates for the new area (which would be a relatively small amount of data - likely less than several screens of satellite images).
Frequent incremental updating of the map data base would allow Tesla to reduce the bandwidth needed for map updates, and keep all vehicles up-to-date within days of any changes made to map data (vs. the 1-2 year delay we have been seeing).
analRaviOli
Member
But that would require the use of their LTE data, and they have set things up so maps only download over WiFi to save them money.
The huge size of the current map file is because it is downloading ALL of the road data for a huge area (like all of North America).
If this was split into much smaller pieces (100-200 miles across), that data would be pretty small - probably on the order of several screenfuls of satellite imagery that is displayed on the center console.
Sending a new map segment would only be needed during the day when the vehicle is making a long distance drive, moving outside of the current map segment - otherwise the incremental map updates would normally be done over WiFi, and because the map segment sizes are so small, Tesla could update all vehicles to current maps in the nearby area - every night...
In other areas Tesla has abandoned the current practices by other manufacturers - this is one of the few areas where they haven't embraced change - and with the rapidly growing fleet of S/3/X and soon Y vehicles, the amount of data transmitted to update all vehicles with new maps covering huge regions will become an increasingly difficult task for Tesla (sending GB of data per vehicle).
If this was split into much smaller pieces (100-200 miles across), that data would be pretty small - probably on the order of several screenfuls of satellite imagery that is displayed on the center console.
Sending a new map segment would only be needed during the day when the vehicle is making a long distance drive, moving outside of the current map segment - otherwise the incremental map updates would normally be done over WiFi, and because the map segment sizes are so small, Tesla could update all vehicles to current maps in the nearby area - every night...
In other areas Tesla has abandoned the current practices by other manufacturers - this is one of the few areas where they haven't embraced change - and with the rapidly growing fleet of S/3/X and soon Y vehicles, the amount of data transmitted to update all vehicles with new maps covering huge regions will become an increasingly difficult task for Tesla (sending GB of data per vehicle).
And what happens when someone in CA puts in a destination in NY? Does the trip planner say sorry, you have to get on WiFi and wait a couple hours to download all of the necessary maps before it can plan your trip?
What happens when you drive outside a tile of maps you have but you don't have an LTE connection?
