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.
Claims20
A method of initiating an emergency call from a source to a destination via a cellular network, comprising:
- prior to an indication associated with the emergency call reaching the destination, determining if both a circuit-switched cellular network route and a packet-switched cellular network route are available to initiate the emergency call from the source to the destination;
- when both routes are available, evaluating the packet-switched cellular network route against at least one selection criteria;
- when the at least one selection criteria is satisfied, initiating the emergency call over the packet-switched cellular network route;
- and
- when the at least one selection criteria is not satisfied, initiating the emergency call over the circuit-switched cellular network route.
A device, comprising:
- a processor;
- a transceiver configured to initiate a voice call with a further device;
- and
- a non-transitory computer readable storage medium that stores a set of instructions executable by the processor, wherein the set of instructions causes the processor to:
- determine if both a circuit-switched cellular network route and a packet-switched cellular network route are available to initiate the voice call from the device to the further device prior to an indication associated with the voice call reaching the further device;
- evaluate the packet-switched cellular network route against at least one selection criteria when both routes are available;
- initiate the voice call over the packet-switched cellular network route when the at least one selection criteria is satisfied;
- and
- initiate the voice call over the circuit-switched cellular network route when the at least one selection criteria is not satisfied.
An integrated circuit, comprising:
- circuitry to determine if both a circuit-switched cellular network route and a packet-switched network cellular route are available to initiate a voice call from a source to a destination, prior to an indication associated with the voice call reaching the destination;
- circuitry to evaluate the packet-switched cellular network route against at least one selection criteria when both routes are available;
- circuitry to initiate the voice call over the packet-switched cellular network route when the at least one selection criteria is satisfied;
- and
- circuitry to initiate the voice call over the circuit-switched cellular network route when the at least one selection criteria is not satisfied.
Dependencies are inferred from the claim text.