COMMUNICATION SYSTEM, COMMUNICATION EQUIPMENT AND COMMUNICATION METHOD FOR THEM

摘要

PROBLEM TO BE SOLVED: To provide a sufficient opportunity of network access to each equipment by eliminating limitations of transmission access and transmission and to deliver transmission data to a destination without any hindrance. SOLUTION: The equipment having a transmission medium between communication means in common by allocating a transmission permission for the medium to each communication means is provided with a memory storing a table 64 in which priority levels 435, 438, 441, 444 are designated for medium access and representing communication means having a medium in common and a means updating the access priority level according to a transmission request evaluated in the medium by a concerned communication means.