CABLE MODEM CONTROL METHOD CONSIDERING CHANNEL CONDITIONS FOR IMPROVING THE ACCURACY OF THE UL DATA TRANSMISSION OF A CABLE MODEM

摘要

PURPOSE: A cable modem control method considering channel conditions is provided to prevent the error of transmission data in a poor channel state or during ranging. ;CONSTITUTION: A CMTS(Cable Modem Termination System) confirms received UL(UpLink) parameters. The CMTS distinguish the state of an UL channel and the permission of UL data transmission of a cable modem(S403). In case the state of the UL channel is not good, the CMTS stops the UL data transmission of the cable modem(S404~S406). The CMTS reserves band allocation to the channel of the cable modem during ranging(S407). The CMTS allocates band to the other available UL channel(S408).;COPYRIGHT KIPO 2011