Change URL without transition

Change URL without transition

I have a question concerning the Ember routing system. Hope somebody can
help.
In my Ember-App, I have a simple leaflet fullscreen map. The center and
zoom level of this map are coming from the URL query parameters. Now it
would be nice to have a simple way to keep this query parameters in sync
with the map position. So when somebody moves the map, I would like to
change the url query parameters to the new values.
When I use a simple transitionTo, I start a loop of changing the map and
updating the query parameters changing the map again and so forth.
So my first idea was to get the location implementation from the router
and changing the url manually. But I do not know how to do that. And it
also feals wrong using Ember this way.
Hope it's getting clear.
Thanks in advanced!