OPTICAL WIRELESS TERMINAL FOR HALF-DUPLEX OPTICAL WIRELESS COMMUNICATION SYSTEM

摘要

PROBLEM TO BE SOLVED: To provide an optical wireless terminal that prevents mislearning of a HUB with a switch function, when the HUB is connected to a trunk line side of the optical wireless terminal.;SOLUTION: The counter of a terminal A starts counting, at the end of packet transmission as shown in Figure (2); the terminal A transmits no packet to a trunk line 1A as a loopback packet, when the count is a prescribed count or below when receiving a packet from a concentrator C as shown in Figure (4) or transmits a packet to the trunk line side of the terminal A, when the cunt is not the prescribed value or more by regarding the absence of a loopback packet; and the terminal A resets the counter at this time.;COPYRIGHT: (C)2003,JPO