Method of mobile terminal for handover/switch among different wireless communication networks in a heterogeneous network environment

A mobile terminal for switching among different wireless communication networks, comprising:

• a velocity detector detecting a moving velocity of the mobile terminal;
• a signal detector for detecting signals of a specific wireless communication network;
• a communication interface having a plurality of interfaces corresponding to the wireless communication networks;
• and
• a processor for turning on the signal detector for detecting a preferred wireless communication network when the moving velocity of the mobile terminal is smaller than the upper velocity limitation of the preferred wireless communication work, receiving the signals of the preferred wireless communication network if the signals are detected after turning on the signal detector, and switching into the preferred wireless communication network after receiving the signals.

A record medium comprising instructions that cause a mobile terminal having at least a signal detector for detecting a wireless communication network to executing steps of:

• detecting a moving velocity of the mobile terminal;
• turning on the signal detector for detecting the preferred wireless communication network when the moving velocity of the mobile terminal is smaller than the upper velocity limitation of the preferred wireless communication work;
• receiving the signals of the preferred wireless communication network if the signals are detected after turning on the signal detector;
• and
• switching into the preferred wireless communication network after receiving the signals

A method for handover among different wireless communication networks for a mobile terminal having at least a signal detector for detecting a preferred wireless communication work, comprising:

• detecting a moving velocity of the mobile terminal;
• turning on the signal detector for detecting the preferred wireless communication network when the moving velocity of the mobile terminal is zero;
• checking whether the preferred network belongs to a short-range wireless network or not when the moving velocity of the mobile terminal is not zero and is smaller than the upper velocity limitation of the preferred wireless communication work;
• turning on the signal detector for detecting the preferred wireless communication network when the preferred network does not belong to short-range wireless network;
• receiving the signals of the preferred wireless communication network if the signals of the preferred wireless communication network are detected after turning on the signal detector;
• and
• handovering to the preferred wireless communication network after receiving the signals.

A mobile terminal for handover among different wireless communication networks, comprising:

• a velocity detector detecting a moving velocity of the mobile terminal;
• a signal detector for detecting signals of a specific wireless communication network;
• a communication interface having a plurality of interfaces corresponding to the wireless communication networks;
• and
• a processor for turning on the signal detector for detecting a preferred wireless communication network when the moving velocity of the mobile terminal is zero, checking whether the preferred network belongs to a short-range wireless network or not when the moving velocity of the mobile terminal is not zero and is smaller than the upper velocity limitation of the preferred wireless communication work, turning on the signal detector for detecting the preferred wireless communication network when the preferred network does not belong to short-range wireless network, receiving the signals of the preferred wireless communication network if the signals of the preferred wireless communication network are detected after turning on the signal detector, and handovering to the preferred wireless communication network after receiving the signals.

A record medium comprising instructions that cause a mobile terminal having at least a signal detector for detecting a preferred wireless communication network to executing steps of:

• detecting a moving velocity of the mobile terminal;
• turning on the signal detector for detecting the preferred wireless communication network when the moving velocity of the mobile terminal is zero;
• checking whether the preferred network belongs to a short-range wireless network or not when the moving velocity of the mobile terminal is not zero and is smaller than the upper velocity limitation of the preferred wireless communication work;
• turning on the signal detector for detecting the preferred wireless communication network when the preferred network does not belong to short-range wireless network;
• receiving the signals of the preferred wireless communication network if the signals of the preferred wireless communication network are detected after turning on the signal detector;
• and
• handovering to the preferred wireless communication network after receiving the signals.