Method of performing cell selection and re-selection using PMAX parameters and system adapted thereto

A method performed by a base station in a wireless communication system, the method comprising:

• generating first maximum power information and at least one second maximum power information;
• and
• transmitting, to a terminal, a system information block (SIB) including the first maximum power information and the at least one second maximum power information,
• wherein a first maximum transmission power level for a cell is obtained based on the first maximum power information, and a second maximum transmission power level for the cell is obtained based on one from the at least one second maximum power information,
• wherein a compensation parameter (Pcompensation) associated with a cell selection reception level value (Srxlev) is identified based on the first maximum transmission power level and the second maximum transmission power level,
• wherein the Srxlev for the cell is identified based on the Pcompensation,
• wherein a cell selection for the cell is performed based on the identified Srxlev, and
• wherein the by:
• Pcompensation is identified by:
• Pcompensation=max(PEMAX1−PPowerClass,0)−(min(PEMAX2,PPowerClass)−min(PEMAX1,PPowerClass)),
• where the PEMAX1 is the first maximum transmission power level, PEMAX2 is the second maximum transmission power level, and the PPowerclass is a maximum radio frequency output power of the terminal.

A terminal in a wireless communication system, the terminal comprising:

• a transceiver configured to transmit and receive a signal;
• and
• a controller configured to:
• receive, from a base station, a system information block (SIB) including first maximum power information and at least one second maximum power information,
• obtain a first maximum transmission power level for a cell based on the first maximum power information and a second maximum transmission power level for the cell based on one from the at least one second maximum power information,
• identify a compensation parameter (Pcompensation) associated with a cell selection reception level value (Srxlev) based on the first maximum transmission power level and the second maxim um transmission power level,
• identify the Srxlev for the cell based on the Pcompensation, and
• perform a cell selection for the cell, based on the identified Srxlev,
• wherein the by:
• Pcompensation is identified by:
• Pcompensation=max(PEMAX1−PPowerClass,0)−(min(PEMAX2,PPowerClass)−min(PEMAX1,PPowerClass)),
• where the PEMAX1 is the first maximum transmission power level, PEMAX2 is the second maximum transmission power level, and the PPowerclass is a maximum radio frequency output power of the terminal.

A base station in a wireless communication system, the base station comprising:

• a transceiver configured to transmit and receive a signal;
• and
• a controller configured to:
• generate first maximum power information and at least one second maximum power information, and
• transmit, to a terminal, a system information block (SIB) including the first maximum power information and the at least one second maximum power information,
• wherein a first maximum transmission power level for a cell is obtained based on the first maximum power information, and a second maximum transmission power level for the cell is obtained based on one from the at least one second maximum power information,
• wherein a compensation parameter (Pcompensation) associated with a cell selection reception level value (Srxlev) is identified based on the first maximum transmission power level and the second maximum transmission power level,
• wherein the Srxlev for the cell is identified based on the Pcompensation,
• wherein a cell selection for the cell is performed based on the identified Srxlev, and
• wherein the Pcompensation is identified by:
• Pcompensation=max(PEMAX1−PPowerClass,0)−(min(PEMAX2,PPowerClass)−min(PEMAX1,PPowerClass)),
• where the PEMAX1 is the first maximum transmission power level, PEMAX2 is the second maximum transmission power level, and the PPowerclass is a maximum radio frequency output power of the terminal.