| 摘要 |
A carrier changing apparatus in a mobile telecommunication system for generating a dummy frequency assignment signal for repeating a frequency conversion or providing a hard hand off based on a traffic signal is provided. In the carrier changing apparatus, a transmitting carrier changer transmits an input forward traffic signal having traffic and overhead information and generates a forward dummy frequency assignment signal based on the forward traffic signal. A receiving carrier changer receives and outputs a reverse traffic signal having traffic and overhead information from a mobile station and generates a delayed reverse traffic signal based on a reverse dummy frequency assignment signal from the mobile station. Since the carrier changing apparatus generates a dummy frequency assignment signal for repeating a frequency conversion or providing a hard hand off by using a traffic signal, it can repeat a frequency conversion and provide a hard hand off without using an additional dummy frequency assignment signal device. Therefore, efficiency of the carrier changing apparatus can lower the cost of equipment. |
