| 摘要 |
A wireless communications system includes a mobile station and a wireless network, where the system enables the transmission of emergency position information from the mobile station to the wireless network. The mobile station includes circuitry, such as a suitably programmed data processor and a transmitter, for initiating the origination of an emergency call and for determining position information that is descriptive of a current position of the mobile station. The mobile station further includes circuitry for transmitting, as a part of the emergency call procedure, the determined position information to the wireless network using any available type of channel. The wireless network includes circuitry, such as a suitably programmed data processor and a receiver, for recognizing a receipt of the determined position information from different types of channels. The determined position information can be transmitted using a Digital Control Channel or an Analog Control or Voice Channel. The determined position information may instead be transmitted using a Digital Traffic Channel, and in this case the mobile station is responsive to an indication that the position information was not received by the wireless network for re-transmitting the position information using a Digital Control Channel. The position information may be transmitted prior to the start of the emergency call on an assigned control channel. The position information can include latitude and longitude, or it may include GPS measurement data. A method for operating the wireless communication system is also disclosed. |
