1. A method of determining a location of a mobile device, comprising: determining an approximate location of the mobile device; grouping the mobile device with a wireless transceiver in proximity to the mobile device to form a communication group; sending the determined approximate location of the mobile device to the wireless transceiver; receiving on the mobile device location information from the wireless transceiver; and determining a more precise location of the mobile device based on the location information received from the wireless transceiver.