WIRELESS COMMUNICATION BASE STATION DEVICE, WIRELESS COMMUNICATION MOBILE STATION DEVICE, AND METHOD FOR SCRAMBLING RESPONSE SIGNAL IN ARQ

摘要

A wireless communication base station device which does not fail in ARQ control even when a mobile station fails to receive allocation information and collision of the uplink data transmitted from mobile stations occurs. In the device, a CRC unit (123) detects an error, if any, in the decoded uplink data by using a CRC and generates a response signal, a modulation unit (105) modulates the response signal, a repetition unit (106) duplicates the modulated response signal and obtains the same response signals, a scrambling code selection unit (107) receives a method of scheduling the uplink data channel from an allocation information generation unit (101) and selects a scrambling code of a PSA mobile station or a DSA mobile station, and a scrambling unit (108) scrambles the response signal with the scrambling code selected by the scrambling code selection unit (107).