Short Burst Data
Iridium Short Burst Data (SBD) je nová dátová služba, ktorá umožňuje novú dátovú komunikáciu s pridanou hodnotou pre zasielanie a príjem dát efektnejšie a rýchlejšie prostredníctvom Iridium siete. Službu je možné aktivovať len na mesačný program - paušál.
The Iridium Satellite network enables SBD to be offered on a global basis through a single network point of presence. However, this is subject to appropriate licensing and regulatory conditions. The basic architecture is illustrated in the diagram.
SBD provides a new capability for vertical market applications in the Oil, Gas, Rail, Maritime, Aeronautical, and Utility industries as well as applications in the Government and Military sectors. The SBD service is available to certified Value Added Resellers who include it as part of a complete end-to-end solution for specific wireless communications needs. Iridium looks to selectively partner with skilled Value Added Resellers (VARs) to integrate the required hardware, software, and SBD service that ultimately forms the complete packaged solution for the end customer.
Remote Applications send Mobile Originated SBD (MO-SBD) data messages via an Iridium 9522 L-Band Transceiver (“LBT”). The application microcontroller or microprocessor communicates with the LBT using AT commands over an RS232 serial port. The application loads the data message into the LBT and instructs it to send the data message. The data message is transmitted across the Iridium satellite network utilizing inter-satellite links to reach the Iridium Gateway. From there the data message is transferred via e-mail to the VARs host computer system. Here the message is stored in a database for further data processing.
Mobile Terminated SBD (MT-SBD) messages are sent to the Iridium Gateway via e-mail from the VARs host computer system. MT-SBD data messages are delivered to the LBT following a MO-SBD or “mail-box check” initiated by the remote application.
The maximum length of a MO-SBD message is 1960 bytes. The maximum length of a MT-SBD message is 1890 bytes. Global network transmit latency for delivery of messages ranges from approximately 5 seconds for short messages to approximately 20 seconds for maximum length messages.