Patent ID: 7391747
Filing Date: 2008-06-24
Classification: H04W

Abstract:
1. An access method for variable power adjustment in a code division multiple access mobile communication system, the method being based on a base station and user equipment, comprising: obtaining acquisition information by the base station through receiving via an up link a prefix of a physical random access channel, and an access prefix and a conflict detection prefix of a physical common packet channel and evaluating quality, respectively, the acquisition information being represented by a matrix containing at least two numbers; performing precise control of transmission power of a message section of the physical random access channel, and the conflict detection prefix, a power control prefix, and a message section of the physical common packet channel being obtained based on quality evaluation values obtained from evaluating the quality; transmitting a control indication of the precise control via an acquisition indication channel, an access prefix acquisition indication channel, and a conflict detection/channel assignment indication channel of a down link; and after the control indication being received by the user equipment, transmitting the message section of the physical random access channel, and the conflict detection prefix, the power control prefix, and the message section of the physical common packet channel by using a value among a plurality of power bias values.