| 摘要 |
PURPOSE: A system for informing a 1xEV-DO system of a conversion when converting into a 1X system from the 1xEV-DO system and a system therefor are provided to enable an HAT(Hybrid Access Terminal) to generate a conversion informing signal to load the signal into a predetermined channel, and to transmit the signal to a 1xEV-DO system, thereby immediately knowing a cause of call connection cancellation. CONSTITUTION: An HAT(110) operates in a 1xEV-DO system for receiving a high-speed data transmission service by interworking with a 1xEV-DO system, updates overhead messages by periodically converting into a 1X system in a traffic state with the 1xEV-DO system, and transmits a predetermined signal that informs the 1xEV-DO system of a conversion into the 1X system. A base station transmitter(120) consists of a 1xEV-DO transmitter(124) for transceiving packet data, and a 1X transmitter(122) for transceiving a voice or data. A base station controller(130) consists of a 1xEV-DO controller(134) for controlling a transmission service of the packet data, and a 1X controller(132) for controlling a transmission service of the 1X transmitter(122). A PDSN(Packet Data Serving Node)(150) transceives the packet data with the 1xEV-DO system. |
