Patent ID: 7844299
Filing Date: 2010-11-30
Classification: H04B,H04L

Abstract:
1. A base station configured to communicate with a mobile station, the base station comprising: a controlling-information transmitting unit configured to transmit to the mobile station as a set of controlling information, an information set indicating an environment of a cell which is resided by the mobile station, or an information set indicating power of interference from surrounding cells, or an information set indicating a condition of propagation channel; a receiving unit configured to receive a signal transmitted from the mobile station, based on said set of controlling information, via a variably-controlling process of a spreading factor and a number of chip repetitions; a received timing measuring unit configured to measure timings of receiving from respective mobile stations signals which are transmitted from the respective mobile stations; a transmitting timing determining unit configured to determine from the timings of receiving from the respective mobile stations timings to be transmitted by the respective mobile stations; and a reporting unit configured to report to the respective mobile stations an information set on the timings to be transmitted which are determined by said transmitting timing determining unit.