Method and apparatus for speech transmission in mobile communication system

Method and apparatus for speech transmission in mobile communication system

CN
  • CN 1,130,449 A
  • Filed: 07/05/1995
  • Published: 09/04/1996
  • Est. Priority Date: 07/11/1994
  • Status: Abandoned Application
First Claim
Patent Images

1. voice transmission method that is used in the telecommunication system, said method comprises:

  • Can with Speech Signal Compression the voice coding method of a spot of speech coding position,The chnnel coding of speech coding position,In the voice transfer process, adopt the different voice coding method of N kind, and all methods has different transmission rate S respectively 1, S 2..., and S NKilobits/second, wherein N 〉

    =2 and S 1

    =S 2

    =S 3S NIt is characterized in that;

    adopt every kind of voice coding method, first channel coding method can both be corresponding with the voice coding method that adopts respectively, above-mentioned first channel coding method comprises that the first chnnel coding position with EDC error detection and correction is added on the speech bits, and produce a constant constant transmission speed that is independent of the voice coding method that is adopted, so that depend on the voice coding method that is adopted, be respectively 0, S in the transmission rate that is added to the first chnnel coding position on the speech coding position during first chnnel coding 1-S 2..., S 1-S NKilobits/second. After first chnnel coding, finish the second channel coding, in this process, the second channel bits of coded of EDC error detection and correction is added on the signal of first chnnel coding generation, and the transmission rate of above-mentioned second channel bits of coded is the C kilobits/second.After the second channel coding, no matter select which kind of voice coding method, overall transmission rate all is constant S 1+ C kilobits/second.

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