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Communication terminal out of range determination method, wireless communication system switching method and communication terminal

  • US 7,801,516 B2
  • Filed: 05/14/2004
  • Issued: 09/21/2010
  • Est. Priority Date: 05/29/2003
  • Status: Expired due to Fees
First Claim
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1. A mobile communication terminal out of range determination method comprising:

  • transmitting at a transmission level which exceeds a predetermined threshold;

    receiving an instruction to raise the transmission level of the mobile communication terminal from a base station while the mobile communication terminal is transmitting at the transmission level which exceeds the predetermined threshold; and

    determining that the mobile communication terminal is out of range based on the instruction, wherein the out of range determination is made by the mobile communication terminal.

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