Mobile station and control information decoding method

摘要

A mobile station capable of efficiently detecting control information addressed thereto, by prioritizing CRC decoding to control channel element at a candidate position, is disclosed. A mobile station (1) according to the present invention, in order to detect the control information addressed from a base station to the mobile station itself included in a downlink control channel having a plurality of control channel elements, for decoding a signal of a control channel element at a candidate position to be assigned with the control information, includes a generating unit (10) configured to generate a reception level of each of the control channel elements at the candidate position and a control unit (20) configured to prioritize the control channel elements based on the reception level and to control decoding of the signal of each of the control channel elements in order of priority.

主权项

1. A mobile station, in order to detect control information addressed from a base station to the mobile station itself included in a downlink control channel having a plurality of control channel elements, for decoding a signal of a control channel element at a candidate position to be assigned with the control information, comprising:
a generating unit configured to generate a reception level of each of the control channel elements at the candidate position; and a control unit configured to prioritize the control channel elements based on the reception level and to control decoding of the signal of each of the control channel elements in order of priority, wherein the generating unit generates an average soft value of the signal included in each of the control channel elements as the reception level, the soft value being neither 1 nor 0 but a value that is likely 1 or likely 0, and the control unit prioritizes the control channel elements based on the average soft value of the signal, and the control unit, to detect control information included in N-number (N>1) of consecutive control channel elements, determines whether a change in the reception level of the N-number of consecutive control channel elements at the candidate position potentially assigned the control information is equal to or over a threshold and, when the change in the reception level is equal to or over the threshold, the control unit gives the N-number of consecutive control channel elements low priorities.