×

Method and an apparatus for establishing the functional capabilities for wireless communications between a base unit and a remote unit

  • US 5,267,244 A
  • Filed: 11/08/1991
  • Issued: 11/30/1993
  • Est. Priority Date: 11/08/1991
  • Status: Expired due to Term
First Claim
Patent Images

1. A method of establishing a full duplex wireless communication link over a common selected frequency channel between a base unit having a first set of functional capabilities and a remote unit having a second set of functional capabilities wherein said base unit is without a priori knowledge of the functional capabilities of the remote unit, said method comprising:

  • transmitting periodically a sync signal in a first selected time period, in the common selected frequency channel, by the base unit;

    scanning by said remote unit to detect said sync signal;

    transmitting a first response signal in the common selected frequency channel by said remote unit, in response to the detection of said sync signal, in a second selected time period, different from the first selected time period;

    transmitting a first control signal encoded by a first code by the remote unit in the common selected frequency channel, in a third selected time period, different from the first and second selected time periods, said first control signal containing the second set of functional capabilities;

    receiving the first control signal by the base unit;

    decoding the first control signal by the base unit to derive the second set of functional capabilities;

    comparing the second set to the first set by the base unit and determining a common set of functional capabilities thereof;

    transmitting a second control signal encoded by the first code by the base unit in the common selected frequency channel, in a fourth selected time period, different from the first, second and third selected time periods, said second control signal containing the common set of functional capabilities; and

    communicating between the base unit an the remote unit based upon a functional capability from the common set.

View all claims
  • 4 Assignments
Timeline View
Assignment View
    ×
    ×