Relay of delayed transmitter identity across an audio patch
AssigneeMotorola Solutions, Inc.
InventorsJames C. Duran, John W. Maher
Life of this patent
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Abstract
A communication system, console, and method of patching a PTT call are provided. An audio stream and control messages are provided to the console, which patches the either or both to target devices. The identity of the audio stream source is embedded only in the audio stream. Initially, when the audio stream is first patched, the identity is not provided. While the audio stream is being patched, the identity is extracted and the control messages updated so that the identity is immediately relayed through the console without having to wait for the next periodic transmission of a control message from the console.
Claims10
A method of patching a push-to-talk (PTT) call from a first mobile radio to a plurality of mobile radio, the method comprising:
- receiving by a server, a non-trunked digital audio stream from the first mobile radio;
- providing to the multiple mobile radios, by the server, the digital audio stream through an audio patch without providing an identity or alias of the first mobile radio to the multiple mobile radios;
- extracting, by the server, at least one of the identity or alias of the first mobile radio;
- providing to the multiple mobile radios, by the server after the step of extracting, the audio stream through an audio patch along with the identity or alias of the first mobile radio;
- providing control plane information of the call to non-listeners without providing the non-listeners with the audio stream, the control plane information having periodically-scheduled updates to maintain the call, initial control plane information provided to the non-listeners lacking both the identity and alias of the transmitter;
- updating the control plane information to contain the extracted at least one of the identity or alias of the first mobile radio;
- and
- providing the updated control plane information to the non-listeners prior to the next periodically-scheduled update.
A server comprising:
- receiver circuitry configured to receive from a first mobile radio, a push-to-talk (PTT) non-trunked digital call containing an audio stream;
- and
- a processor configured to extract at least one of an identity or alias of the first mobile radio using control information of the call;
- transmitter circuitry configured to provide the audio stream to multiple mobile radios through an audio patch without providing an identity of the first mobile radio prior to the identity being extracted and to provide the audio stream to multiple mobile radios through an audio patch containing the identity of the first mobile radio after being extracted;
- the receiver circuitry is further configured to receive:
- an initial control message associated with the audio stream and that does not contain the at least one of the identity or alias, the initial control message initiating the audio patch, and
- an updated control message associated with the audio stream and that contains the extracted at least one of the identity or alias, the updated control message updating the initial control message;
- and
- the transmitter circuitry is further configured to:
- periodically retransmit control messages to maintain the call, and transmit an updated console control message containing the extracted at least one of the identity or alias prior to the next periodic retransmission of the initial control message.
Dependencies are inferred from the claim text.