• A Logical Channel is defined by the type of information it carries.
    Logical channels are classified into control and traffic channels.
  • Answer to the question: what is it being transported?
  • A Transport Channel is defined by how and with what characteristics the information is transmitted.
  • Answer to the question: how is it being transported?
  • A Physical Channel is defined by the physical resources used to transmit the data. At the physical level, a distinction can be made between:
  • The physical channel on which are mapped transport channels.
  • The physical signal, which does not carry information but is used for
    synchronization or measurement.