Optical distribution network system with large usable bandwidth for DBA
First Claim
1. An optical distribution network system comprising:
- an OLT (optical line termination);
a plurality of ONUs (optical network units);
a first optical network and a second optical network, one of which connects said OLT with said plurality of ONUs; and
bandwidth control means for apportioning said plurality of ONUs between said first optical network and said second optical network, for assigning a predetermined transmission bandwidth to each of said plurality of ONUs, and for accepting a bandwidth change of the transmission bandwidth.
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Accused Products
Abstract
An optical distribution network system includes an OLT; a plurality of ONUs; a first optical network and a second optical network, one of which connects the OLT with the plurality of ONUs; and a bandwidth controller. The bandwidth controller apportions the plurality of ONUs between the first optical network and the second optical network, assigns a predetermined transmission bandwidth to each of the plurality of ONUs, and accepts a bandwidth change of the transmission bandwidth. It solves a problem of a conventional optical distribution network system in that the maximum bandwidth available by DBA (dynamic bandwidth assignment) is equal to the total transmission bandwidth of working side minus the sum total of the minimum cell rates of the ONUs, and hence it cannot secure a large usable bandwidth for DBA, when congestion of bandwidth increase takes place among the plurality of ONUs.
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Citations
18 Claims
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1. An optical distribution network system comprising:
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an OLT (optical line termination);
a plurality of ONUs (optical network units);
a first optical network and a second optical network, one of which connects said OLT with said plurality of ONUs; and
bandwidth control means for apportioning said plurality of ONUs between said first optical network and said second optical network, for assigning a predetermined transmission bandwidth to each of said plurality of ONUs, and for accepting a bandwidth change of the transmission bandwidth. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An optical distribution network system comprising:
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an OLT;
a plurality of ONUs;
a first optical network and a second optical network, one of which connects said OLT with said plurality of ONUs; and
bandwidth control means for apportioning a plurality of paths contained in said plurality of ONUs between said first optical network and said second optical network, for assigning a predetermined transmission bandwidth to each of said path, and for accepting a bandwidth change of the transmission bandwidth. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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Specification