초록 ▼

A transmission power control method in a cellular radiotelephone system that includes, within at least one cell site, first and second stations, each having a transmitter and a receiver for a predetermined radio channel, and dynamically adjusts transmission power levels, comprising the steps of form

A transmission power control method in a cellular radiotelephone system that includes, within at least one cell site, first and second stations, each having a transmitter and a receiver for a predetermined radio channel, and dynamically adjusts transmission power levels, comprising the steps of forming location groups by dividing radio channels within the cell site around the first station into a plurality of groups which are from lowest group to highest group, measuring, in the first station, levels of signals received from the second station, allotting the second station to a location group corresponding to the measured signal level, assigning an idle traffic channel to the second station by checking traffic channels according to a location group of the second station, determining a normal operation state in case of being within a level range, a power decrease requiring state in case of being over a maximum value of level range, and a power increase requiring state in case of being below a minimum value of level range, by comparing a signal level received from the first station and measured in the second station with the level range received and determined in the first station, decreasing a transmission power of the second station by the determination of the power decrease requiring state to allot the second station to a lower location group and checking traffic channels according to the location group to decrease a transmission power of the first station when there is no idle channel, and increasing a transmission power of the second station by the determination of the power increase requiring state to allot the second station to a higher location group and checking traffic channels according to the location group to increase a transmission power of the first station when there is no idle channel.

대표청구항 ▼

A transmission power control method in a cellular radiotelephone system comprising, within at least one cell site, first and second stations, each having a transmitter and a receiver for a predetermined radio channel, and dynamically adjusting transmission power levels, comprising the steps of: form

A transmission power control method in a cellular radiotelephone system comprising, within at least one cell site, first and second stations, each having a transmitter and a receiver for a predetermined radio channel, and dynamically adjusting transmission power levels, comprising the steps of: forming location groups by dividing radio channels within the cell site around said first station into a plurality of groups arranged from a lowest group to a highest group; measuring, in said first station, a signal level of a signal received from said second station; allotting said second station to one of said location groups corresponding to said measured signal level; assigning an idle traffic channel to said second station by checking traffic channels according to an allotted location group of said second station; determining an operational state of the second station, a normal operation state being determined as said operational state in a case of the received signal level being within a level range, a power decrease requiring state being determined as said operational state in a case of the received signal level being over a maximum value of the level range, and a power increase requiting state being determined as said operational state in a case of the received signal level being below a minimum value of the level range, by comparing the received signal level of the signal received from said first station and measured in said second station with the level range, the level range being received and determined in said first station; decreasing a transmission power of said second station in response to the determination of said power decrease requiring state to allot said second station to a lower location group and checking traffic channels according to the lower location group to decrease a transmission power of said second station when there is no idle channel; and increasing a transmission power of said second station in response to the determination of said power increase requiring state to allot said second station to a higher location group and checking traffic channels according to the higher location group to increase a transmission power of said second station when there is no idle channel.