Disclosed are systems, apparatus, devices, methods, media, products, and other implementations, including a method that includes receiving, at a server, beacon data indicative of a location of an asset tag device, the beacon data determined based on one or more beacon signals received at the asset tag device from one or more transmitters that is each associated with a respective one of group values identifying a corresponding one of a plurality of assigned transmitter groups comprising the respective each of the one or more transmitters. The method also includes determining, at the server, the location of the asset tag device based on the beacon data received at the server from the asset tag device and on the group values respectively associated with the one or more transmitters from which the one or more beacon signals received at the asset tag device were transmitted.