×

Method and system for providing communication between standard terminal equipment using a remote communication unit

  • US 5,479,475 A
  • Filed: 11/15/1993
  • Issued: 12/26/1995
  • Est. Priority Date: 11/15/1993
  • Status: Expired due to Term
First Claim
Patent Images

1. A method of communicating between a first terminal equipment unit and a second terminal equipment unit using a mobile unit and a base station each capable of digital communications, said first terminal equipment unit producing digital data including time sensitive messages intended for said second terminal equipment unit, comprising the steps of:

  • receiving at said mobile unit said digital data comprising a first time sensitive message from said first terminal equipment unit;

    recognizing said first time sensitive message, converting said first time sensitive message into a time insensitive message, and substituting said time insensitive message for said first time sensitive message within said digital data to produce modified digital data;

    packetizing at said mobile unit said modified digital data;

    modulating at said mobile unit said packetized modified digital data;

    transmitting from said mobile unit said modulated packetized modified digital data on a wireless link;

    receiving at said base station said transmitted modulated packetized modified digital data;

    demodulating at said base station said received modulated packetized modified digital data to produce a copy of said packetized modified digital data;

    monitoring at said base station said copy of said packetized modified digital data for packets containing errors;

    requesting by said base station repetition of an erroneously received packet;

    retransmitting from said mobile unit an original packet corresponding to said erroneously received packet;

    receiving at said base station said retransmitted original packet corresponding to said erroneously received packet;

    demodulating at said base station said original packet corresponding to said erroneously received packet to produce a copy of said original packet;

    inserting at said base station in place of said erroneously received packet said copy of said original packet to produce a copy of said modified digital data; and

    recognizing within said copy of said modified digital data said time insensitive message, converting said time insensitive message into said first time sensitive message, and substituting said first time sensitive message for said time insensitive message within said cow of said modified digital data to produce a copy of said digital data.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×