Bandwidth allocation method, optical communication system, device, and storage medium

A bandwidth allocation method, applied to a second optical network unit, comprising:

• obtaining a fixed bandwidth allocated by a first optical network unit, wherein the second optical network unit is already attached to the first optical network unit at a first moment;
• sending first bandwidth allocation basis information to the first optical network unit;
• and
• obtaining a dynamic bandwidth allocated by the first optical network unit, wherein the dynamic bandwidth is allocated by the first optical network unit according to the first bandwidth allocation basis information.

An optical communication system, comprising a first optical network unit and at least one second optical network unit;

• wherein
• the first optical network unit is configured to be attached by one or more second optical network units;
• and
• the first optical network unit is further configured to allocate a fixed bandwidth to each second optical network unit according to a fixed value, obtain first bandwidth allocation basis information, and allocate a matching dynamic bandwidth to each second optical network unit according to the first bandwidth allocation basis information.