Patent ID: 7995550
Filing Date: 2011-08-09
Classification: G08C,H04B,H04J,H04L,H04W

Abstract:
1. A spread spectrum communication method applied to a mobile station in a code division multiple access system continuously transmitting uncompressed frames in a normal mode, and intermittently transmitting compressed frames in a compressed mode, the method comprising: receiving a compressed downlink frame in the compressed mode and transmission power control information transmitted from a base station, the compressed downlink frame being provided, at a base station, with an idle period formed by compressing an interleaved downlink frame interleaved in bit units, by dividing the compressed downlink frame into a front portion and a rear portion, and by arranging the front portion and the rear portion such that the front portion includes a front edge of a frame window and that the rear portion includes a rear edge of the frame window, and the transmission power control information indicating an increase or a decrease in uplink transmission power; monitoring a frequency component of another frequency carrier during the idle period of the compressed downlink frame received; generating a compressed uplink frame by compressing an uplink frame in the compressed mode; and adjusting uplink transmission power on the uncompressed uplink frames in normal mode and compressed uplink frames in compressed mode in accordance with the transmission power control information, by increasing or decreasing current uplink transmission power with variable power control step size for the normal mode and with variable power control step size for the compressed mode.