Patent ID: 9641990
Date: 2017-05-02
CPC Classifications: H04W

Claim:
1. A system to transfer calls without interruption between a cellular network and a WiFi network, comprising: a wireless cellular network for carrying cellular communication packets between at least two devices, at least one of which is a mobile device; a WiFi network that is separate from the cellular network and that carries communications between at least two devices, at least one of which is a mobile device; a server connected to the WiFi network for controlling communication traffic on the WiFi network; a mobile device having a network detector, the mobile device being configured to connect to the cellular network and wirelessly connect to the WiFi network simultaneously, wherein upon the network detector detecting a WiFi signal within a set of boundaries and of a preset strength threshold defined by an equation s=a÷sin 60° where “s” is signal strength and “a” is an internal area within the set of boundaries, the mobile device routes communications over the WiFi network; wherein, upon the network detector detecting the WiFi signal of the preset strength threshold, the mobile device routes communications over the cellular network; and wherein the mobile device switches automatically between the cellular network and the WiFi network depending on detection of a WiFi signal of the preset strength threshold.