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Method and apparatus for transmitting and receiving signals using two classes of channels

  • US 5,615,409 A
  • Filed: 09/25/1995
  • Issued: 03/25/1997
  • Est. Priority Date: 09/27/1993
  • Status: Expired due to Term
First Claim
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1. A method for transmitting and receiving signals at a base station with an antenna array in a cellular communication system, comprising the steps of:

  • dividing available communication channels into a plurality of classes;

    transmitting signals to a plurality of mobile stations in a first class of channels with a wide antenna lobe created by said antenna array, wherein said first class of channels is used to transmit broadcast information to an entire cell and to receive initial access signals from mobile stations, said first class of channels is also used for enabling mobile stations to measure the downlink signal strength transmitted from adjacent base stations and is used for handover access during handovers between base stations;

    determining position of a first mobile station from signals received from said first mobile station;

    transmitting signals to said first mobile station in a second class of channels with a narrow antenna lobe created by said antenna array when the position of said mobile is determined; and

    receiving signals from said first mobile station with adjustable lobe widths on both channel classes.

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