Method for compensating for transmission power deviations of channels in a mobile phone

A method for compensating transmission power deviations of channels in a mobile phone using adjustment channels selected from channels for mobile phone services while including a reference one of available channels allocated to the mobile phone from the channels for mobile phone services, the number of the adjustment channels being less than the number of the allocated available channels, the mobile phone including a non-volatile memory stored with respective transmission automatic gain control (AGC) level values for the adjustment channels, said transmission AGC level values derived at an optimum level for each of the adjustment channels, the method comprising:

• an offset value processing procedure for reading out the transmission AGC level values from the non-volatile memory when the mobile phone turns on, and deriving offset values corresponding to respective differences between the transmission AGC level value of the reference channel and respective transmission AGC level values of the remaining adjustment channels;
• a compensation value processing procedure for deriving, at intervals of a predetermined time, a compensation value for a currently available one of the allocated available channels, based on offset values of upper and lower limit adjustment channels, above and below the currently available channel, respectively, a channel span between the currently available channel and the upper and lower limit adjustment channel, and a channel span between the upper and lower adjustment channels, while using the following expression:
• ch_pwr ⁢ _offset = ( max_ch ⁢ _offset - min_ch ⁢ _offset ) span × ( ch - min_ch ) + min_ch ⁢ _offset
• where, “ch_pwr_offset” represents the compensation value, “max_ch_offset” and “min_ch_offset” represent the offset values of the upper and lower limit adjustment channels, respectively, “span” represents the channel span between the upper and lower limit adjustment channels, “ch” represents the channel number of the currently available channel, and “min_ch” represents the channel number of the lower limit adjustment channel.

A method for compensating for transmission power deviations of channels in a mobile phone having allocated available channels selected from channels for mobile phone services, comprising the steps of:

• selecting adjustment channels from the channels for mobile phone services;
• selecting at least one reference channel from the allocated available channels;
• deriving transmission automatic gain control (AGC) level values for the adjustment channels and the at least one reference channel;
• and
• deriving an offset value for each adjustment channel consisting of a difference between the transmission AGC level value of said adjustment channel and the transmission AGC level value of the at least one reference channel.