| 摘要 |
A system for communicating between a base station and a plurality of vehicles over a two-way communication system allows the mobile vehicles to request air time to send a message. Within the request to send signal is an identifier providing the base station with an identification of the priority level for the particular message. As an example, if the mobile vehicles are public safety vehicles, a message having some urgency would have a high priority, while a more routine report might have a lower priority. The base station will receive the request to send signals and schedule transmission of the longer message from the vehicle based initially upon the priority level. Thus, an emergency signal from the vehicle to the base would be scheduled before a more routine signal based upon the priority information provided in the request to send signal. The base then schedules the transmission of the longer message from each of the mobile vehicles based upon the priority identifier. In this fashion, the information being transmitted to and from the mobile vehicles is handled more in line with the immediate needs of the particular mobile vehicle.
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