| 主权项 |
1. A method for controlling handover message transmission power of a mobile station in a mobile communication system, the method comprising the steps of:
acquiring uplink information on a handover target base station; determining a maximum transmission power of a handover ranging message using the uplink information; and transmitting the handover target base station a handover ranging message having a power level below the determined maximum transmission power, wherein the uplink information on the handover target base station is generated based on information on a power for handover ranging message that the handover target base station receives from at least one of mobile stations, andwherein the maximum transmission power of the handover ranging message is determined based on any one of Equation 4 and Equation 5 below:
PTX_HR_MAX=EIRxPHR,max,min,average−MS_EIRP−RSSBS (4) wherein the ‘PTX_HR_MAX’ represents the maximum transmission power of the handover ranging message, the ‘EIRxPHR,max,min,average’ represents an average value, maximum value, or minimum value of equivalent isotropic received power for the handover ranging message, the ‘MS_EIRP’ represents equivalent isotropic radiated power of mobile station, and the ‘RSSBS’ represents a Received Signal Strength Indicator (RSSI) measured in the target base station, and
PTX_HR_MAX=EIRxPHR,max,min,average−MS_EIRP−10 log(RSSBS/10−Pinterference−Pnoise) (5) wherein the ‘PTX_HR_MAX’ represents the maximum transmission power of the handover ranging message, the ‘EIRxPHR,max,min,average’ represents an average value, maximum value, or minimum value of equivalent isotropic received power for the handover ranging message, the ‘MS_EIRP’ represents equivalent isotropic radiated power of a mobile station, the ‘RSSBS’ represents a Received Signal Strength Indicator (RSSI) measured in the target base station, and the ‘Pinterference’ and the ‘Pnoise’ represent interference power of a linear unit for uplink measured in the target base station and noise power. |
