Patent ID: 6850711
Filing Date: 2005-02-01
Classification: H04B,H04L,H04Q

Abstract:
1. A method of using an unused band in a passive optical network (PON) in which an optical line termination (OLT) and a plurality of optical network units (ONUS) are connected, comprising the steps of: (a) determining existence of an unused band in an upstream path in said optical line termination; (b) transmitting a use right data from said optical line termination to a specific one of said plurality of optical network units on a downstream path; (c) determining whether said specific optical network unit uses said unused band, in response to said use right data; (d) transmitting a reply indicative of use of said unused band from said specific optical network unit to said optical line termination on an upstream path, when it is determined that said specific optical network unit uses said unused band; (e) setting the use of said unused band in response to said reply indicative of the use of said unused band; (f) transmitting said setting of the use of said unused band from said optical line termination to said specific optical network unit on said downstream path such that said specific optical network unit can use said unused band.