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Mobile terminal apparatus including net radio service in a mobile satellite service communication system

  • US 5,930,295 A
  • Filed: 02/23/1996
  • Issued: 07/27/1999
  • Est. Priority Date: 02/23/1996
  • Status: Expired due to Fees
First Claim
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1. A mobile terminal apparatus having a transceiver with a user interface, and an antenna for both radiating and collecting RF signals to and from a satellite, the transceiver comprising:

  • an RF section coupled to the antenna and a processor board coupled to the RF section and the user interface;

    said processor board including,digital signal processor means for implementing a demodulator function, a modulator function, a receive framing function coupled to the demodulator, a transmit framing function coupled to the modulator, and a coding function and decoding function coupled to the transmit and receive framing functions, respectively;

    digital control processor means coupled to the signal processor means for controlling the functions implemented thereby;

    wherein said digital signal processor means includes means for operating in a voice mode, facsimile and data modes, signaling and packet switch modes, and a net radio mode including a normal mode, a private mode and a priority 1 mode; and

    wherein the priority 1 mode includes a sequential search of a net radio database for an available net channel of a plurality of net channels designated for net radio services, thereby increasing the probability of a successful priority 1 call request.

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