Patent ID: 8818443
Filing Date: 2014-08-26
Classification: H04W

Abstract:
1. A base station for a cellular wireless communication system comprising a plurality of base stations and a plurality of terminals to control a transmit power based on specified transmit power control parameters and a path loss during communication with the base station; wherein the base station: receives from each terminal, received power quality information of a downlink reference signal from the base station measured by the plural terminals, and received power quality information of a downlink reference signal from a neighboring cell base station adjacent to the base station; selects a cell-center terminal and a cell-edge terminal from the plural terminals based on the received power quality information and a power report frequency over time; selects the cell-center terminal based on a power report value with a largest power report frequency; selects the cell-center terminal and the cell-edge terminal by excluding power report values that are lower than a specified value; finds a first transmit power of the cell-center terminal based on an allowed interference power quantity preset in the neighboring cell base station, and a first path loss between the applicable neighboring cell base station and the cell-center terminal; finds a second transmit power of the cell-edge terminal based on the allowed interference power quantity preset in the neighboring cell base station; and a second path loss between the applicable neighboring cell base station and the cell-edge terminal; specifies the relation between path loss and transmit power by interpolating the first path loss and the first transmit power of the cell-center terminal, and the second path loss and the second transmit power of the cell-edge terminal, and also finds the transmit power control parameters utilized in controlling the transmit power in the cell-center and cell-edge terminals belonging to the base station; and notifies the terminals belonging to the base station of the transmit power control parameters that were found.