×

Wireless telephone system having a free period allocated to switching between two frequencies

  • US 6,115,612 A
  • Filed: 06/20/1997
  • Issued: 09/05/2000
  • Est. Priority Date: 06/25/1996
  • Status: Expired due to Fees
First Claim
Patent Images

1. A method of operating a wireless telephone system of the time division multiple access scheme having base stations connected to a public telephone network and plural mobile wireless terminals for communicating with the base stations, comprising the steps of:

  • communicating a state data among said mobile wireless terminals,performing a bi-directional communication between a first mobile wireless terminal and a second mobile wireless terminal out of said plural mobile wireless terminals,causing said first mobile wireless terminal to transmit first data to said base station using a first frequency;

    causing said base station to relay said first data transmitted from said first mobile wireless terminal and to transmit said first data to said second mobile wireless terminal using said first frequency; and

    causing said second mobile wireless terminal to transmit second data directly to said first mobile wireless terminal,wherein the base station transmits and receives control data to other mobile wireless terminals which are in a reception waiting state using a second frequency, even during the bi-directional communication between said first and second mobile wireless terminals,and wherein a free period is allocated to switching between the first and second frequencies.

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