METHOD FOR PROVIDING INFORMATION ON FREQUENCY BAND, NETWORK TERMINAL DEVICE AND TERMINAL FOR REALIZING THE METHOD, AND COMMUNICATION ACCESS NETWORK INCLUDING THE HEAD END, NETWORK TERMINAL DEVICE AND TERMINAL

摘要

PROBLEM TO BE SOLVED: To provide a method for providing information on a filter frequency band by a communication access network including plural terminals (T11, T12, T13,..., T31,...) and a head end(HE). ;SOLUTION: Pilot tone signals (P1i, P1j, P1k) are inserted in a specified pilot tone frequency band (CHp1i) of a downstream modulation signal. The pilot tone signals (P1i, P1j, P1k) include information regarding the first frequency band, a terminal fetches the pilot tone signals (P1i, P1j, P1k) from the downstream modulation signal by using frequency bands (CHd1i, CHd1j, CHd1k) obtained from specified pilot tone frequency bands (CHp1i, CHp1j, CHp1k).;COPYRIGHT: (C)1999,JPO