| 摘要 |
A network server operable to communicate information over a half-duplex push-to-talk over cellular wireless communication system includes a location manager operable to determine geographic location of a plurality of recipients, an alert notification manager for preparing alert messages based information regarding events and respective geographic locations of the events, and a message delivery notification manager operable to deliver alert messages to the recipients over the half-duplex push-to-talk over cellular wireless communication system based upon the geographic location of each recipient relative to the geographic locations of the events, with the alert messages being delivered to the recipients without completion of calling procedures and incoming call acceptance by the recipients that are required by conventional full-duplex cellular communication systems. |
