×

Hand Over Method For Dual Band/Dual Mode Mobile Communication Terminal

  • US 20080254796A1
  • Filed: 04/19/2005
  • Published: 10/16/2008
  • Est. Priority Date: 04/19/2005
  • Status: Active Grant
First Claim
Patent Images

1. A handover method for a dual band/dual mode mobile communication terminal, the mobile communication terminal including an antenna for transmitting and receiving radio waves to/from an asynchronous mobile communication network and a synchronous mobile communication network, an asynchronous RF device for performing asynchronous communication with the asynchronous mobile communication network via the antenna, a synchronous RF device for performing synchronous communication with the synchronous mobile communication network via the antenna, a main processor for controlling wireless communication with the synchronous and asynchronous mobile communication networks via the synchronous and asynchronous Radio Frequency (RF) devices, and a common module for providing common resources, and being capable of performing wireless communication with the asynchronous mobile communication network and the synchronous mobile communication network, the method comprising:

  • the first step of the main processor setting an initial mobile communication network connection to the asynchronous mobile communication network and connecting to the asynchronous mobile communication network when power is applied;

    the second step of activating the synchronous RF device and setting up a connection to the synchronous mobile communication network when the intensity of a signal from the asynchronous mobile communication network is equal to or lower than a first predetermined reference value;

    the third step of determining whether the intensity of a signal from the asynchronous mobile communication network is equal to or lower than a second predetermined reference value previously set for the handover;

    the fourth step of activating the connection to the synchronous mobile communication network set up at the second step if the intensity of the signal from the asynchronous mobile communication network is determined to be equal to or lower than the second predetermined reference value at the third step; and

    the fifth step of releasing the connection to the asynchronous mobile communication network.

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