Apparatus and Methods for Transmission of Emergency Call Data Over Wireless Networks
AssigneeApple Inc.
InventorMartin HANS
Life of this patent
Estimating the term…
Abstract
Methods and apparatus for providing useful data in association with a high-priority call such as an emergency call. In one embodiment, the data comprises a data (e.g., an MSD or FSD) embedded within one or more real-time protocol packets such as RTP Control Protocol (RTCP) packets, that are interspersed within the voice or user data stream (carried in e.g., RTP packets) of an emergency call. Apparatus and methods are described for transmitting the data portion reliably from the initiating terminal (e.g., an in-vehicle system) to a Public Safety Answering Point (PSAP), by using the same transport connection as the user data.
Claims21
1-39. (canceled)
A method of routing an emergency call from a source to a destination, the method including:
- determining if both circuit-switched and packet-switched network routes are available to route a call;
- if both the routes are available:
- (i) evaluating at least one of the routes against at least one selection criterion;
- (ii) selecting one of the routes based at least in part on the evaluating;
- and
- (iii) routing the call over the selected route;
- and
- if only the packet-switched route is available, routing the call over the packet-switched route.
A device, including:
- a transceiver configured to exchange data with a further device;
- and
- a processor,
- wherein the transceiver and the processor are configured to route an emergency call to the further device by:
- determining if both circuit-switched and packet-switched network routes are available to route a call;
- if both the routes are available:
- (i) evaluating at least one of the routes against at least one selection criterion;
- (ii) selecting one of the routes based at least in part on the evaluating;
- and
- (iii) routing the call over the selected route;
- and
- if only the packet-switched route is available, routing the call over the packet-switched route.
A device, including:
- a transceiving means for exchanging data with a further device;
- and
- a processing means for determining a manner of routing an emergency call to the further device by:
- determining if both circuit-switched and packet-switched network routes are available to route a call;
- if both the routes are available:
- (i) evaluating at least one of the routes against at least one selection criterion;
- (ii) selecting one of the routes based at least in part on the evaluating;
- and
- (iii) routing the call over the selected route;
- and
- if only the packet-switched route is available, routing the call over the packet-switched route.
Dependencies are inferred from the claim text.