Alert notification network

Wireless network server adapted to collect, aggregate, and communicate vehicle related information to a plurality of vehicular telematics units, comprising:

• a vehicle location manager operable to identify a geographic location and direction of travel of each vehicular telematics unit;
• an alert notification manager for receiving information related to events and preparing alert messages based upon respective geographic locations of the events;
• and,
• a message delivery notification manager operable to deliver alert messages to each of the plurality of telematics units over a half-duplex push-to-talk over cellular wireless communication system based upon the geographic location and direction of travel of each of the vehicular telematics units relative to the geographic locations of the events, where the alert messages are delivered to the vehicular telematics units without completion of incoming call acceptance by the vehicular telematics units that are required by conventional full-duplex cellular communication systems;
• wherein the wireless network server is operable to:
• identify available services compatible with network latencies due to delay times of the push-to-talk over cellular wireless communication system;
• and
• collect appropriate alert messages consistent with the identified services.

Method for communicating information through a half-duplex push-to-talk over cellular wireless communications system, comprising:

• interfacing a network server with a wireless carrier core IP network, the network server operable to:
• locate and determine direction of travel of push-to-talk telematics units within a geographic area;
• receive alert messages related to events and respective geographic locations of the events;
• aggregate the alert messages;
• prepare the alert messages for delivery, where the prepared alert messages include the respective geographic locations of the events;
• schedule and format the alert messages for delivery to the push-to-talk telematics units over the half-duplex push-to-talk over cellular wireless communication system, based upon the geographic location and direction of travel of each push-to-talk telematics units relative to the geographic locations of the events, where the alert messages are delivered to the push-to-talk telematics units without completion of incoming call acceptance by the push-to-talk telematics units that are required by conventional full-duplex cellular communication systems;
• identify available services compatible with network latencies due to delay times of the push-to-talk over cellular wireless communication system;
• and
• collect appropriate alert messages consistent with the identified services.