초록 ▼

A mobile communication terminal is provided with a GPS receiver and detects a movement velocity of the mobile communication terminal based on GPS data. The period of time in which the channel condition of a radio channel is monitored is changed according to the movement velocity. The lower the movem

A mobile communication terminal is provided with a GPS receiver and detects a movement velocity of the mobile communication terminal based on GPS data. The period of time in which the channel condition of a radio channel is monitored is changed according to the movement velocity. The lower the movement velocity of the mobile communication terminal, the longer the period of time in which the radio channel is intermittently monitored. The radio channel is periodically monitored in a period of time changed according to the movement velocity of the mobile communication terminal. Channel switching is performed from a radio channel being used to a neighboring radio channel when the channel condition of the neighboring radio channel is better than that of the radio channel being used.

대표청구항 ▼

[What is claimed is:] [1.]a) receiving GPS (Global Positioning System) data from at least three GPS satellites;b) detecting a movement velocity of the mobile terminal based on the GPS data;c) changing an intermittent period according to the movement velocity of the mobile terminal; andd) monitoring

[What is claimed is:] [1.]a) receiving GPS (Global Positioning System) data from at least three GPS satellites;b) detecting a movement velocity of the mobile terminal based on the GPS data;c) changing an intermittent period according to the movement velocity of the mobile terminal; andd) monitoring the channel condition during the intermittent period with a duration interval for monitoring the channel condition for each intermittent period, wherein the intermittent period is measured from a beginning of the duration interval for monitoring a channel condition to a next beginning of the duration interval for monitoring a channel condition,wherein the step c) comprises changing a whole monitoring time period in addition to the intermittent time period according to the movement velocity of the mobile terminal; andthe step d) comprises monitoring the channel condition during the intermittent period for the whole time period which have been changed according to the movement velocity of the mobile terminal.