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Portable radio telephone equipment used for CMTS/MCS in common

  • US 5,842,129 A
  • Filed: 02/16/1995
  • Issued: 11/24/1998
  • Est. Priority Date: 10/11/1991
  • Status: Expired due to Term
First Claim
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1. A method for automatically selecting the operating mode of a radio telephone capable of operating on a cellular mobile telephone system (CMTS) and on a microcellular system (MCS) which utilizes the same channels as said CMTS, comprising the steps of:

  • said radio telephone retrieving information stored in a memory is said radio telephone identifying at least one CMTS or MCS control channel previously accessed by said radio telephone;

    said radio telephone assessing the received power to determine availability of said at least one CMTS or MCS control channel; and

    said radio telephone setting itself to operate on either the CMTS or MCS in accordance with said availability,wherein, if the received power of said at least one CMTS or MCS control channel is not adequate, said radio telephone automatically selects either a CMTS operating mode or MCS operating mode in accordance with the steps of;

    scanning the CMTS channels to determine the availability of at least one CMTS or MCS control channel at the location of said radio telephone;

    storing information obtained as a result of said scanning in said memory; and

    selecting either a CMTS operating mode or a MCS operating mode in accordance with said information stored in said memory.

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