Tandem-free vocoder operations between non-compatible communication systems
First Claim
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1. A method of determining tandem-free operation (TFO) contents in a TFO frame comprising:
- receiving a TFO frame comprising a punctured PCM stream, wherein TFO contents is punctured into the PCM stream;
extracting a source type parameter from a predetermined location in the TFO frame to determine a TFO source type;
extracting intra-system parameters from the TFO frame to determine the TFO contents if the TFO source type is intra-system; and
extracting intersystem parameters from the TFO frame to determine the TFO contents if the TFO source type is intersystem.
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Abstract
Tandem-free vocoder operations (TFO) between non-compatible communication systems may be enabled through hardware modifications at communication elements within each system. In one aspect, each infrastructure entity in System 1 comprises an intra-system TFO Frame Generator G1, an intra-system TFO Frame Extractor E1, and a TFO Frame Extractor E2 of System 2, which is non-compatible to System 1. Each infrastructure entity in System 2 comprises an intra-system TFO Frame Generator G2, an intra-system TFO Frame Extractor E2, and a TFO Frame Extractor E1 of System 1.
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Citations
16 Claims
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1. A method of determining tandem-free operation (TFO) contents in a TFO frame comprising:
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receiving a TFO frame comprising a punctured PCM stream, wherein TFO contents is punctured into the PCM stream; extracting a source type parameter from a predetermined location in the TFO frame to determine a TFO source type; extracting intra-system parameters from the TFO frame to determine the TFO contents if the TFO source type is intra-system; and extracting intersystem parameters from the TFO frame to determine the TFO contents if the TFO source type is intersystem. - View Dependent Claims (2, 3, 4, 5)
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6. An apparatus for determining tandem-free operation (TFO) contents in a TFO frame comprising:
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a processor; memory in electronic communication with the processor; and instructions stored in the memory, the instructions being capable of executing the steps of; receiving a TFO frame comprising a punctured PCM stream, wherein TFO contents is punctured into the PCM stream; extracting a source type parameter from a predetermined location in the TFO frame to determine a TFO source type; extracting intra-system parameters from the TFO frame to determine the TFO contents if the TFO source type is intra-system; and extracting intersystem parameters from the TFO frame to determine the TFO contents if the TFO source type is intersystem. - View Dependent Claims (7, 8, 9, 10)
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11. An apparatus for determining tandem-free operation (TFO) contents in a TFO frame comprising:
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means for receiving a TFO frame comprising a punctured PCM stream, wherein TFO contents is punctured into the PCM stream; means for extracting a source type parameter from a predetermined location in the TFO frame to determine a TFO source type; means for extracting intra-system parameters from the TFO frame to determine the TFO contents if the TFO source type is intra-system; and means for extracting intersystem parameters from the TFO frame to determine the TFO contents if the TFO source type is intersystem. - View Dependent Claims (12, 13, 14, 15)
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16. A memory storing a computer program that, when executed, causes a computer to perform the acts of:
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receiving a TFO frame comprising a punctured PCM stream, wherein TFO contents is punctured into the PCM stream; extracting a source type parameter from a predetermined location in the TFO frame to determine a TFO source type; extracting intra-system parameters from the TFO frame to determine the TFO contents if the TFO source type is intra-system; and extracting intersystem parameters from the TFO frame to determine the TFO contents if the TFO source type is intersystem.
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Specification