US 8,559,360 B2 · Method and apparatus for controlling power for uplink

Abstract

A method and apparatus for controlling power for uplink are provided. When a base station is moving or unable to communicate with others, at least one interference amount is estimated for a neighboring base station based on a path gain between a terminal and the neighboring base station and a transmission power of each encoding packet size and transmission format included in a candidate group related to scheduling transmission power parameters. A target interference amount is determined based on an interference amount control value and an initial target interference amount according to a processing load of a serving base station, and one interference amount is selected from estimated interference amounts based on the target interference amount. The terminal determines the transmission power based on an encoding packet size and a transmission format corresponding to the selected interference amount.

Claims19

Dependent claims

A method for controlling an uplink power of a terminal at a base station, the method comprising:

at the base station, obtaining a candidate group including schedulable encoding packet sizes and transmission formats each comprising a different transmission power per tone;
at the base station, calculating a path gain between the terminal and a neighboring base station;
estimating at least one interference amount for the neighboring base station based on the calculated path gain and the transmission power per tone of each encoding packet size and transmission format included in the candidate group;
at the base station, determining a target interference amount based on an interference control amount value;
selecting one from the at least one estimated interference amount based on the target interference amount;
and
controlling a transmission power of the terminal based on the encoding packet size and transmission format corresponding to the selected estimated interference amount.

4 more elements

An apparatus for controlling an uplink power of a terminal at a base station, the apparatus comprising:

a candidate group obtaining unit for obtaining a candidate group comprising schedulable encoding packet sizes and transmission formats each comprising a different transmission power per tone;
a path gain calculation unit for calculating a path gain between the terminal and a neighboring base station;
an interference amount estimation unit for estimating at least one interference amount for the neighboring base station based on the calculated path gain and the transmission power per tone of each encoding packet size and transmission format included in the candidate group;
a target interference amount setup unit for setting up a target interference amount based on an initial target interference amount according to a processing load of the base station and an interference amount control value;
and
a transmission power parameter determining unit for selecting one based on the target interference amount from the estimated interference amounts, obtaining an encoding packet size and a transmission format corresponding to the selected interference amount, and providing the obtained encoding packet size and transmission format to the terminal.

3 more elements

Dependencies are inferred from the claim text.

Method and apparatus for controlling power for uplink

Life of this patent

Method and apparatus for controlling power for uplink

Life of this patent

Abstract

Claims19