COMMUNICATION SYSTEM, TRANSMISSION TERMINAL USED FOR COMMUNICATION SYSTEM, RELAY TERMINAL USED FOR COMMUNICATION SYSTEM, COMMUNICATION METHOD IN COMMUNICATION SYSTEM AND COMPUTER PROGRAM USED FOR COMMUNICATION SYSTEM

摘要

PROBLEM TO BE SOLVED: To enable a publication-side terminal to transmit information while designating a desired subscription-side terminal in a system for performing data distribution services (DDS)-based communications.;SOLUTION: Each of relay terminals 2-4 includes a table 15 for storing therein one of a plurality of priorities ranked among the relay terminals 2-4 and a means for transmitting and receiving control information required for performance of communication procedures determined by DDS between a transmitting terminal 5 and a receiving terminal 1. The transmitting terminal includes a means for transmitting and receiving the control information to/from each of the relay terminals 2-4, a storage section 17 for storing address information of the relay terminals 2-4, respectively, and a table 18 for storing therein priorities of the relay terminals 2-4 read from the respective tables 15 of the relay terminals 2-4 by the transmitting and receiving means. The transmitting terminal 5 selects any one relay terminal 2 based on the priorities in the table 18 and transmits information to the relay terminal 2, and the relay terminal 2 transmits the information to the receiving terminal 1.;COPYRIGHT: (C)2009,JPO&INPIT