APPARATUS AND METHODS FOR TRANSMISSION OF EMERGENCY CALL DATA OVER WIRELESS NETWORKS
First Claim
1. A method of providing an emergency call within a network adapted for substantially real-time packet-switched operation, the emergency call comprising a composite stream having a first stream and one or more second streams, the method comprising:
- providing the first stream in a substantially continuous manner;
providing the one or more second streams;
forming the composite stream using at least the first stream and the one or more second streams;
establishing a session, wherein the session is additionally adapted to route the composite stream; and
transmitting the composite stream via the session.
1 Assignment
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Accused Products
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 CPSAP), by using the same transport connection as the user data.
167 Citations
40 Claims
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1. A method of providing an emergency call within a network adapted for substantially real-time packet-switched operation, the emergency call comprising a composite stream having a first stream and one or more second streams, the method comprising:
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providing the first stream in a substantially continuous manner; providing the one or more second streams; forming the composite stream using at least the first stream and the one or more second streams; establishing a session, wherein the session is additionally adapted to route the composite stream; and transmitting the composite stream via the session. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. An apparatus for making an emergency call within a network capable of packet-switched operation, the apparatus comprising:
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a microphone, adapted to continuously capture and digitally analyze voice into a plurality of first packets; one or more sensors, the sensors being adapted to encode one or more parameters associated with the apparatus or a platform on which the apparatus is carried into one or more second packets; a radio transmitter, wherein the transmitter is adapted to transmit a plurality of packets across a wireless network; a processor in data communication with the transmitter; and a computer-readable apparatus comprising media adapted to contain a computer program having a plurality of instructions, the plurality of instructions which, when executed by the processor; generate the plurality of packets for transmission at least in part from an interspersing of the plurality of first packets with the one or more second packets; establish a session, wherein the session is adapted to route the interspersed plurality of first packets and one or more second packets; and transmit the interspersed plurality of packets via the radio transmitter. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
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21. Network apparatus configured to receive an emergency call within a packet switched network, the apparatus comprising:
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a network interface adapted to receive first and second pluralities of packets via an internet protocol (IP) network in data communication with the apparatus; a processor in data communication with the interface; and a computer readable apparatus comprising media adapted to contain a computer program having a plurality of instructions, the plurality of instructions that when executed by the processor; receive a request for a communication session, the session being adapted facilitate to transfer the first and second pluralities of packets; establish the session; receive the first and second pluralities of packets via the session; extract substantially real-time user data from the first plurality of packets; and extract emergency-related data from the second plurality of packets. - View Dependent Claims (22, 23, 24, 25, 26, 27)
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28. A method of placing a high-priority call within a network capable of packet-switched operation, the method comprising:
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providing a substantially continuous user data stream; providing a plurality of data related to a high-priority event; disposing at least portions of the user data stream within a first packetized protocol structure; disposing at least portions of the data related to the high-priority event within a second packetized protocol structure; interspersing the first and second protocol structures; and transmitting the composite stream over the network via a communications session. - View Dependent Claims (29, 30, 31, 32, 33, 34, 35, 36)
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37. A telecommunications apparatus adapted for the conveyance of emergency calls using a reliable packetized protocol transport to an entity adapted to receive packetized data from a network and process the data, the apparatus comprising:
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a radio transmitter; and apparatus in communication with the transmitter and adapted to cause transmission of packetized data over the network, the packetized data comprising first packets carrying substantially real-time user data, and second packets interspersed with the first packets and carrying emergency-related data; wherein the first and second packets are formatted according to different protocols; and wherein each of the different protocols support quality-of-service requirements adapted to provide the reliability. - View Dependent Claims (38, 39)
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40. A method of routing an emergency call from a source to a destination, the method comprising:
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determining if both circuit-switched and packet-switched network routes are available to route the 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.
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Specification