| 摘要 |
<p>PROBLEM TO BE SOLVED: To efficiently transfer non-name data by returning a received data cell to a base station as it is when an error occurs during data transmission, comparing it with a transmission data cell which is previously accumulated, detecting the occurred part of the error, informing a mobile station of error information indicating the occurred part of the error and correcting previously received error data. SOLUTION: In a base station being a transmission side, a CRC inspection bit is added to an inputted information data cell and it is transmitted by using down Uch 102. It is received by the reception part 104 of the mobile station and the cell is CRC-inspected. When the error does not exist, it is transferred to a data transfer part. When the error exists, the cell is returned to the base station as it is by using a Uch error cell 106. In the base station, the data cell with the error, which is returned from the mobile station, is received by a reception part 108, and it is compared with transmission data which is originally accumulated. The occurred part of the error is detected. When the CRC error exists in reception data, a transmission part 101 requests retransmission to the mobile station.</p> |
