Wireless in-band signaling with in-vehicle systems
First Claim
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1. A method, comprising:
- 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 communication and the data communication occur over a single voice call via a voice channel of a digital wireless communication network;
the IVS further including a customer application coupled to the in-band signaling modem for sending data via the in-band signaling modem during a voice call;
the vehicle further including an in-vehicle audio system for entertainment and communication uses;
the in-vehicle audio system including a speaker and microphone;
in the IVS, initiating the voice call via the digital wireless communication network to a remote call taker location;
after initiating the voice call, receiving at the IVS, via the voice call, a predetermined signaling tone originating from the call taker location 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
13 Claims
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1. A method, comprising:
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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 communication and the data communication occur over a single voice call via a voice channel of a digital wireless communication network; the IVS further including a customer application coupled to the in-band signaling modem for sending data via the in-band signaling modem during a voice call; the vehicle further including an in-vehicle audio system for entertainment and communication uses; the in-vehicle audio system including a speaker and microphone;
in the IVS, initiating the voice call via the digital wireless communication network to a remote call taker location;after initiating the voice call, receiving at the IVS, via the voice call, a predetermined signaling tone originating from the call taker location 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)
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8. A system, 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 an in-band signaling modem for encoding and decoding voice-channel communications sent to and from an embedded phone module of an In-Vehicle System (IVS) via the voice channel of the digital wireless communication network; and the telematics software configured to transmit over the voice channel a predetermined signal tone having approximately a predetermined audio frequency, the transmission of the predetermined signal tone having approximately the predetermined audio frequency to control a switch of the IVS and accordingly cause an in-vehicle audio system of the IVS to couple to the embedded phone module and unmute a speaker of the in-vehicle audio system or cause an in-band signaling modem of the IVS to couple to the embedded phone module for data communication and mute the speaker of the in-vehicle audio system. - View Dependent Claims (9, 10, 11, 12, 13)
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Specification