RANGING METHOD FOR PASSIVE OPTICAL NETWORK, SYSTEM, AND DEVICE

摘要

Embodiments of the present invention provide a ranging method for a passive optical network, including: allocating ranging bandwidth to at least two optical network terminals ONTs and providing ranging bandwidth information for the at least two ONTs by using a same downlink frame; opening a quiet window for suspending uplink sending of other ONTs in a ranging process of the at least two ONTs; and receiving ranging responses of the at least two ONTs in the quiet window and calculating ranging results of the at least two ONTs according to the ranging responses of the at least two ONTs. The embodiments of the present invention further provide a ranging apparatus for a passive optical network and a passive optical network system.