Wireless in-band signaling with in-vehicle systems
First Claim
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1. A method comprising the steps of:
- providing an In-Vehicle System (IVS) including an in-band signaling modem in a vehicle for mobile, wireless voice and data communication, both the voice and data communications to occur over a single voice call via a voice channel of a digital wireless communication network;
the vehicle further including an in-vehicle audio system for entertainment and communication uses;
the in-vehicle audio system including a speaker and microphone;
deploying a customer application in the IVS, the customer application coupled to the in-band signaling modem for sending data via the in-band signaling modem during a voice call;
in the IVS, initiating the voice call via the digital wireless communication network to a remote call taker location;
at the call taker location, receiving the voice call initiated from the IVS;
sending a predetermined signaling tone from the call taker location, via the voice call, to the IVS preparatory to an in-band data session; and
in the IVS, responsive to receiving the predetermined signaling tone, muting the audio system speaker so that occupants of the vehicle will not hear the sounds of data transferring in the form of audio frequency tones between the customer application and the call taker location.
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Abstract
This invention pertains to methods and apparatus for data communications from vehicles, to obtain emergency, concierge and other services, using a voice channel of a digital wireless telecommunications network. Signaling is described for commencing data sessions after establishing a voice channel call. The call may be initiated from the vehicle automatically, and the call taker location may be unattended. Signaling methods are selected for traversing both newer and legacy vocoders for ubiquitous operation.
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Citations
20 Claims
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1. A method comprising the steps of:
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providing an In-Vehicle System (IVS) including an in-band signaling modem in a vehicle for mobile, wireless voice and data communication, both the voice and data communications to occur over a single voice call via a voice channel of a digital wireless communication network; the vehicle further including an in-vehicle audio system for entertainment and communication uses; the in-vehicle audio system including a speaker and microphone; deploying a customer application in the IVS, the customer application coupled to the in-band signaling modem for sending data via the in-band signaling modem during a voice call; in the IVS, initiating the voice call via the digital wireless communication network to a remote call taker location; at the call taker location, receiving the voice call initiated from the IVS; sending a predetermined signaling tone from the call taker location, via the voice call, to the IVS preparatory to an in-band data session; and in the IVS, responsive to receiving the predetermined signaling tone, muting the audio system speaker so that occupants of the vehicle will not hear the sounds of data transferring in the form of audio frequency tones between the customer application and the call taker location. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. An In-Vehicle System (IVS) comprising:
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machine-readable memory for storing telematics software; a processor for reading the machine-readable memory and executing the telematics software stored therein; the telematics software configured for execution on the processor for sending and receiving data via a voice channel of a digital wireless communication network; the telematics software including a customer application and an in-band signaling modem for encoding and decoding data sent from and to the customer application; an in-vehicle audio system, the audio system including a speaker and a microphone; an embedded phone module, the phone module configured for at least voice-channel communications via the digital wireless communication network; a switch for controllably coupling the in-vehicle audio system to the embedded phone module for voice communications, or alternatively coupling the in-band signaling modem to the embedded phone module for data communication, all during a single voice channel wireless call; and the switch arranged to interrupt a voice conversation, by coupling the in-band signaling modem to the embedded phone module to begin an in-band data session, and muting the speaker of the in-vehicle audio system, in response to detecting a predetermined signal tone received via the embedded phone module during a voice-channel call; wherein the predetermined signal tone has approximately a predetermined audio frequency. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification