Apparatus And Method For Transmission/Receiving Large Volumes Of Message In Satellite Mobile Data ServiceSMDS System

摘要

PURPOSE: A large capacity message transceiving apparatus and method of a satellite movement data service system are provided to simply transmit and receive a large capacity message by dividing a large capacity message to a predetermined size, additionally inserting a message inherent number and a serial number, transmitting them, managing the divided large capacity message as received on a memory, and integrally storing as one message. CONSTITUTION: A communication module(31) receives a constructed message frame from a message transmission processor(32), transmits it to a satellite earth station(11), and receives a transmission response message from the satellite earth station and informs the message transmission processor(32) of the message transmission result. The message transmission processor(32) requests a divided transmission message to be transmitted from a message dividing processor(36), receives one divided transmission message storage house which the message dividing processor stores as a pointer variable, constructs a message frame, transmits it to the communication module(31), and is informed of the message transmission result through the communication module. A message file caller(33) reads a transmission message file(34), generates a transmission message storage house(35) and transmits it to the message dividing processor(36). The transmission message file(34) is a file storing a message to be transmitted, which is a binary file or a text file. The transmission message storage house(35) keeps the content of the transmission message file on a memory and stores a message inherent number, a message type, a transmission number, a receiver number, a size of a message to be transmitted or a message content. The message dividing processor(36) divides the message content of the transmission message storage house(35) received from the message file caller(33) to a size suitable to the message frame, generates the divided transmission message storage houses(37) as many as the divided number, and forms a connection pointer list according to the order of the message. The divided transmission message storage house(37) stores the content as much as the size of the message to be contained in the message frame.