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Method of transmitting user information and overhead data in a communication device having multiple transmission modes

  • US 5,721,732 A
  • Filed: 10/31/1995
  • Issued: 02/24/1998
  • Est. Priority Date: 10/31/1995
  • Status: Expired due to Term
First Claim
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1. A method comprising the steps of:

  • providing user information and intermittent overhead data;

    selecting from a first transmission technique and a second transmission technique;

    when the first transmission technique has been selected;

    encoding a first representation of the user information using a first encoding technique;

    when the intermittent overhead data exists to be transmitted, replacing a first predetermined amount of the first representation with the intermittent overhead data to form a data unit;

    when the second transmission technique has been selected;

    encoding a second representation of the user information using a second encoding technique;

    when the intermittent overhead data exists to be transmitted, replacing a second predetermined amount of the second representation with the intermittent overhead data to form the data unit, which second predetermined amount is less per data unit than the first predetermined amount; and

    transmitting the data unit;

    such that when using the second transmission technique, an increased number of bits are available over time to represent the user information as compared to the first transmission technique, while a substantially equal number of bits are available over time to represent the intermittent overhead data.

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